vehicle parking assist system, vehicle parking assist method, and vehicle

专利摘要:
invention patent: "vehicle parking assist system, vehicle including the same and vehicle parking assist process". the present invention relates to an auxiliary vehicle parking system that includes: a camera (120); a first vehicle guidance section that recognizes the position of a force transmitter (220) external to a vehicle based on the image obtained via the camera (120) to guide the vehicle (100) to the force transmitter (220); a power receiver (110) that receives electrical power from the power transmitter (220) in a non-contact manner; and a second vehicle guidance section that guides the vehicle (100) based on the electrical force received by the force receiver (110). the control section performs a process of stopping the vehicle (100) when the electrical force received by the force receiver (110) from the force transmitter (220) does not satisfy a first condition, even after the control section has taken the control section driving the vehicle to move the vehicle beyond a predetermined distance after the first vehicle guidance section becomes unable to detect the position of the force transmitter (220) based on the image.
公开号:BR112012016729B1
申请号:R112012016729
申请日:2011-03-09
公开日:2020-04-07
发明作者:Ichikawa Shinji；Nakamura Toru
申请人:Toyota Motor Co Ltd；
IPC主号:

专利说明:

Descriptive Report of the Invention Patent for SYSTEM TO ASSIST VEHICLE PARKING, METHOD OF ASSISTING VEHICLE PARKING, AND VEHICLE. BACKGROUND OF THE INVENTION TECHNICAL FIELD OF THE INVENTION [001] The invention relates to an auxiliary vehicle parking system, a vehicle including the auxiliary vehicle parking system, and an auxiliary vehicle parking method and in particular, to a system and auxiliary vehicle parking process that performs an auxiliary parking operation using an electrical energy receiving section that receives electricity in a non-contact manner, and to a vehicle including the vehicle's auxiliary parking system.
DESCRIPTION OF THE RELATED TECHNIQUE [002] Vehicles, such as pure electric vehicles and plug-in hybrid vehicles, that are configured to be able to charge an electricity storage device in the vehicle from an external power source are currently in use . Technologies to automatically load and technologies to guide the vehicle for this purpose are being studied.
[003] Publication of Japanese Patent Application No.
2007/97345 (JP-A-2007-97345) describes a technology to perform auxiliary alignment control, in which, when an indicator of an electric power transmission unit exists near the target parking position in the image captured by a camera rear monitor that captures the image of an area close to the vehicle, the position of the indicator is recognized.
[004] However, the technologies described in JP-A-2007-97345 do not take into account the fact that the electricity transmission unit indicator is positioned in the hidden location of the camera.
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2/42 mere rear monitor. In particular, unless overtaking the vehicle is prevented when the vehicle is approaching the electrical power transmission unit, a situation may occur, in which the vehicle is brought involuntarily into contact with the electrical power transmission unit, etc. On the other hand, when the vehicle is brought to a stop just before the electric power transmission unit to avoid overtaking, a situation may occur, in which the vehicle position is not suitable for charging. Thus, there is room for improvement in order to precisely guide the vehicle even after the indicator is positioned in the hidden location of the camera.
SUMMARY OF THE INVENTION [005] The invention provides a system and auxiliary vehicle parking process, with which it is possible to minimize the positional deviation from the parking position in which the vehicle must be stopped, and provides a vehicle including the auxiliary system vehicle parking space.
[006] A first aspect of the invention is an auxiliary vehicle parking system including: a camera that captures an image of an area close to a vehicle; a first vehicle guide section that recognizes a position of an electric power transmission unit external to the vehicle based on the image obtained via the camera to guide the vehicle to the electric power transmission unit; an electrical energy receiving section that receives electrical energy from the electrical transmission unit in a non-contact manner; a second vehicle guide section that guides the vehicle based on the electrical energy received by the electrical energy receiving section; and a control section that causes the vehicle to move by controlling a vehicle drive section, which drives the vehicle, based on the exits of the pri
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3/42 track and second vehicle guide sections. The control section performs a process of stopping the vehicle when the electrical energy received by the electrical energy receiving section of the electrical transmission unit does not satisfy a first condition that the electrical energy is equal to or higher than a first value limit, even after the control section has led the vehicle drive section to move the vehicle beyond a predetermined distance after the first vehicle steering section becomes unable to detect the position of the power transmission unit based on Image.
[007] The first limit value can be determined by measuring the relationship between a distance between the power transmission unit and the power receiving section and a voltage in progress [008] The control section can stop receiving the electrical energy via the electrical energy receiving section and discontinue a guide made by the second vehicle guide section when the electrical energy received by the electrical energy receiving section of the electrical transmission unit does not satisfy the first condition even after the control section having driven the vehicle drive section to move the vehicle beyond the predetermined distance after the first vehicle guide section becomes unable to detect the position of the power transmission unit based on the image.
[009] The control section can terminate the guide performed by the second vehicle guidance section and begin preparation for charging an electricity storage device to the vehicle via the electrical power transmission unit when the electrical energy received by the receiving section of electrical power from the electric power transmission unit meets the first condition before the
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4/42 vehicle has been moved a predetermined distance after the first vehicle guidance section becomes unable to detect the position of the power transmission unit based on the image.
[0010] A configuration can be used, in which, after the control section automatically stops the vehicle and discontinues the guide made by the second vehicle guidance section, the control section restarts the transmission or reception of electrical energy via the receiver section of electrical power in response to an operator's instruction and the control section initiates charging of the electricity storage device to the vehicle via the electrical power transmission unit when electrical power is received by the electrical power receiving section of the power transmission unit electrical satisfies a second condition that the electrical energy is equal to or higher than a second limit value, and on the other hand, the control section alerts the operator when the electrical energy received by the electrical energy receiving section of the transmission unit of electricity does not satisfy the second condition.
[0011] The second limit value can be less than the first limit value.
[0012] The second limit value can be determined based on an escaping electromagnetic field strength which is an escaping electromagnetic field strength when the transmission and reception of energy at a maximum energy output is performed.
[0013] The instruction can be provided by the operator bringing the vehicle drive section into a parking state.
[0014] The electrical energy receiving section may include an electrical energy receiving coil that receives electrical energy in a non-contact manner via resonance from the electromagnetic field
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5/42 from an electric power transmission coil in the electric power transmission unit.
[0015] A second aspect of the invention is a vehicle including the vehicle auxiliary parking system above.
[0016] A third aspect of the invention is an auxiliary vehicle parking process including: based on an image obtained via a camera that captures an image of an area close to a vehicle, recognizing a position of an electric power transmission unit external to the vehicle; guide the vehicle to an electric power transmission unit based on the image; receiving electrical energy from the electrical transmission unit via an electrical energy receiving section that receives electrical energy in a non-contact manner; guide the vehicle based on the electrical energy received by the electrical energy receiving section; take the vehicle to move by carrying out the control when driving the vehicle, according to the guidance based on the image and guidance based on electrical energy; and stop the vehicle when the electrical energy received by the electrical energy receiving section of the electrical power transmission unit does not satisfy a first condition that the electrical energy is equal to or higher than a first limit value, even after the vehicle has moved beyond a predetermined distance after it becomes impossible to detect the position of the power transmission unit based on the image.
[0017] The first limit value can be determined by measuring a relationship between a distance between the power transmission unit and the electrical energy receiving section and a voltage in progress.
[0018] The process of assisting the parking of the vehicle may also include stopping the receipt of electrical energy via the electrical energy receiving section and discontinuity of guidance with ba
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6/42 if on electrical energy when the electrical energy received by the electrical energy receiving section of the electrical power transmission unit does not satisfy the first condition even after the vehicle has been moved beyond the predetermined distance after it becomes impossible to detect the position of the power transmission unit based on the image.
[0019] The auxiliary vehicle parking process may also include the completion of guidance based on electrical energy and the initiation of preparation to charge an electricity storage device in the vehicle via the energy transmission unit when the electrical energy received by the section Electricity receiver of the electric power transmission unit meets the first condition before the vehicle has been moved by a predetermined distance after it becomes impossible to detect the position of the electric power transmission unit based on the image.
[0020] The auxiliary vehicle parking process may also include: after the vehicle is automatically stopped and guidance based on electrical energy is discontinued, restarting the transmission or receipt of electrical energy via the electrical energy receiving section in response to a instruction from an operator; start charging the electricity storage device in the vehicle via the electrical power transmission unit when the electrical energy received by the electrical energy receiving section of the electrical power transmission unit satisfies a second condition that the electrical energy is equal to or more higher than a second limit value; and alerting the operator when the electrical energy received by the electrical energy receiving section of the electrical power transmission unit does not satisfy the second condition.
[0021] According to the invention, during an auxiliary vehicle parking operation, even after the vehicle gets close
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7/42 to the parking position, the vehicle is precisely guided and overtaking is monitored and prevented, so that it is possible to minimize the positional deviation from the parking position, in which the vehicle must be stopped.
BRIEF DESCRIPTION OF THE DRAWINGS [0022] The previous and following objectives, characteristics and advantages of the invention will become evident from the following description of an example embodiment with reference to the accompanying drawings, in which the numbers are used to represent similar elements and where:
[0023] figure 1 is a diagram of the total configuration of a vehicle power supply system according to an embodiment of the invention;
[0024] figure 2 is a diagram to explain the principles of energy transmission using the resonance process;
[0025] figure 3 is a diagram showing relationships between the distance from the electric current source (magnetic current source) and the electromagnetic field strength;
[0026] figure 4 is a diagram to explain the problem that can arise when a vehicle is guided with the use of camera 120 shown in figure 1;
[0027] figure 5 is a diagram showing a schematic configuration relating to the transmission of energy and reception between the vehicle and a power supply apparatus shown in this embodiment;
[0028] figure 6 is a configuration diagram showing details of vehicle 100 shown in figures 1 and 5;
[0029] figure 7 is a circuit diagram to explain an electrical power receiving unit 110 on the vehicle side and an electrical power transmission unit 220 on the side of the vehicle
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8/42 power supply in greater detail;
[0030] figure 8 is a functional block diagram of a controller (180) shown in figure 6;
[0031] figure 9 is a flow chart (the first half) to explain the control performed in a step of adjusting a vehicle position when the non-contact power supply is performed;
[0032] figures 10A and 10B show a flowchart (the second half) to explain the control performed in the step of adjusting the position of the vehicle when the power supply is made without contact;
[0033] figure 11 is a diagram showing a relationship between the distance of the vehicle's path and the voltage of the received energy;
[0034] figure 12 is a flow chart to explain the detection of the distance of the vehicle path performed in step S10 of figure 10A;
[0035] figure 13 is a wavy diagram of the operation showing an example of the operation, in which the vehicle speed regulation is set to zero according to the flow chart shown in figure 12, and;
[0036] figure 14 is a flow chart to explain a process of operation mode 2 performed in step S20 of figures 10A and 10B.
DETAILED DESCRIPTION OF THE EMBODIMENTS [0037] An embodiment of the invention will be described in detail below with reference to the drawings. Note that the same or the corresponding portions in the drawings are indicated by the same reference number and their description is not repeated.
[0038] Figure 1 is a diagram of the total configuration of a vehicle power supply system according to the embodiment of the invention. Referring to Figure 1, the vehicle power supply system 10 includes a vehicle 100 and a power supply apparatus 200. Vehicle 100 includes a receiving unit
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9/42 power log 110, a camera 120 and a communication unit 130.
[0039] The electrical energy receiving unit 110 is installed at the bottom of a vehicle body and is configured to receive, in a non-contact way, the electrical energy sent from an electrical energy transmission unit 220 of the power supply device 200. More specifically, the electrical energy receiving unit 110 includes a self-resonating coil to be described below, and receives, in a non-contact manner, the electrical energy from the electrical power transmission unit 220 by resonance with a self-resonating coil included in the unit. 220 electric power transmission via electromagnetic field. The camera 120 is provided to detect the positional relationship between the electric power receiving unit 110 and the electric power transmission unit 220 and is installed in the vehicle body in order to be able to capture an image from a rear view of the vehicle, for example. example. The communication unit 130 is a communication interface for communication between the vehicle 100 and the power supply apparatus 200.
[0040] The power supply device 200 includes a high frequency power supply device 210, the power transmission unit 220, a light portion 230, and a communication unit 240. The power supply device of high frequency 210 converts commercial alternating current (AC) energy fed from the power supply system into high frequency electrical energy and emits high frequency electrical energy to the 220 power transmission unit. High frequency AC generated by the 210 high frequency power supply device is, for example, one megahertz to several dozen megahertz.
[0041] Electricity transmission unit 220 is fixed
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10/42 on a floor of a parking area or car park and is configured to transmit the high frequency AC power supplied by the power supply device to the vehicle's electrical receiving unit 110 in a non-contact manner. of high frequency energy 210. More specifically, the electrical power transmission unit 220 includes a self-resonating coil and transmits, in a non-contact manner, electrical energy to the electrical power receiving unit 110 by resonating with the self-resonant resonating coils included in the electric power receiving unit 110 via electromagnetic field. A plurality of light portions 230 are provided in the electrical power transmission unit 220 in order to indicate the position of the electrical power transmission unit 220. Examples of the light portion 230 include light-emitting diodes. The communication unit 240 is a communication interface for communication between the power supply device 200 and the vehicle 100.
[0042] In this vehicle 10 power supply system, high frequency AC power is transmitted from the power supply unit 220 of the power supply unit 200, and the self-resonating coil included in the power supply unit 110 of vehicle 100 and the self-resonant coil included in the electrical power transmission unit 220 resonate with each other via electromagnetic field, thereby supplying the electrical energy from the power supply apparatus 200 to vehicle 100.
[0043] When the electric power is fed from the power supply device 200 to the vehicle 100, it is necessary to align the electric power receiving unit 110 of the vehicle 100 and the electric power transmission unit 220 of the power supply device 200 guiding the vehicle 100 to the power supply device 200.
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11/42 [0044] The alignment is conducted as follows. In the first step, the positional relationship between the electric power receiving unit 110 of the vehicle 100 and the electric power transmission unit 220 of the power supply device 200 is detected based on the image captured by the camera 120 and the vehicle is controlled, based on the detection result, so that the vehicle is guided to the electric power transmission unit 220. More specifically, the plurality of light portions 230 provided in the electric power transmission unit 220 is captured by the camera 120 and the positions and the orientations of the plurality of luminous portions 230 are recognized by the recognition of the images. Then, based on the result of the image recognition, the relative position and orientation between the power transmission unit 220 and the vehicle are recognized and the vehicle is guided to the power transmission unit 220 based on the recognition result .
[0045] Since the area in which the electric power receiving unit 110 and the electric power transmission unit 220 face each other is smaller than the bottom surface area of the vehicle body, the transmission unit Electric power 220 cannot be captured by camera 120 when electric power transmission unit 220 is positioned under the vehicle body. When this occurs, the alignment control is switched from the first stage to the second stage. In the second step, electrical power is supplied from the electrical transmission unit 220 to the electrical receiving unit 210 and the distance between the electrical transmission unit 220, and the electrical receiving unit 110 is detected based in the state of power supply. Based on this distance information, the vehicle is controlled so that the power transmission unit 220
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12/42 and the power receiving unit 110 are aligned with each other.
[0046] The magnitude of the electrical power transmitted as a test signal from the electrical power transmission unit 220 in the second stage is set less than the charging of electrical power that is powered by the electrical power transmission unit 220 to the receiving unit after the alignment of the electric power transmission unit 220 with the electric power receiving unit 110. The reason why electric power is transmitted from the electric power transmission unit 220 in the second step is to detect the distance between the electric power transmission unit 220 and the electric power receiving unit 110 and for this purpose, the high electric power to be used when the main power supply operation is performed is not necessary.
[0047] Next, a non-contact power supply process used in the vehicle 10 power supply system according to this embodiment will be described. In the power supply system to the vehicle 10 according to this embodiment, electrical energy is fed from the power supply apparatus 200 to the vehicle 100 by the resonance process.
[0048] Figure 2 is a diagram to explain the principles of energy transmission using the resonance process. With reference to figure 2, in the resonance process, as in the case of the resonance of two adjustment forks, the electrical energy is transmitted from one coil to the other coil via an electromagnetic field due to the resonance of two resonant LC coils having the same frequency in the electromagnetic field (neighboring field).
[0049] Specifically, a primary coil 320 is connected to a high frequency alternating current power source 310 and the
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13/42 high frequency AC power from one megahertz to several dozen megahertz is fed, via electromagnetic induction, to the primary self-resonating coil 330 which is magnetically coupled to primary coil 320. The primary self-resonating coil 330 is an LC resonator that uses the induction of the coil itself and the parasitic capacity and the primary self-resonant coil 330 resonates with the secondary self-resonant coil 340 having the resonance frequency the same as that of the primary self-resonant coil 330 via electromagnetic field (neighboring field). As a result, the energy (electrical energy) is transferred from the primary self-resonating coil 330 to the secondary self-resonating coil 340 via an electromagnetic field. The energy (electrical energy) transferred to the secondary self-resonating coil 340 is received, via electromagnetic induction, by the secondary coil 350, which is magnetically coupled to the secondary self-resonating coil 340 and is then fed to the 360 load. when the Q factor indicating the resonance intensity of the primary self-resonating coil 330 and the secondary self-resonating coil 340 is greater than 100, for example.
[0050] Regarding the correspondences between figure 1 and figure
2, the electrical energy receiving unit 110 in figure 1 corresponds to the secondary self-resonating coil 340 and the secondary coil 350, and the electrical power transmission unit 220 in figure 1 corresponding to the primary coil 320 and the primary self-resonating coil 330.
[0051] Figure 3 is a diagram showing relationships between the distance from the electric current source (magnetic current source) and the intensity of the electromagnetic field. With reference to figure 3, the electromagnetic field includes three components. The k1 curve represents a component that is inversely proportional to the distance from the source
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14/42 electromagnetic wave and is called a radiation field. The k2 curve represents a component that is inversely proportional to the square of the distance from the electromagnetic wave source and is called the induction field. The k3 curve represents a component that is inversely proportional to the distance cube from the electromagnetic wave source and is called a static field.
[0052] These components have the region, in which the intensity of the electromagnetic wave decreases sharply with the distance from the source of the electromagnetic wave, and this neighboring field (evanescent field) is used to transmit energy (electrical energy) in the resonance process . Specifically, with the use of the neighboring field, by carrying a pair of resonators (a pair of LC resonant coils, for example) having the same frequency to resonate with each other, the energy (electrical energy) is transmitted from the resonator (coil primary resonator) to the other resonator (secondary self-resonant coil). Since the neighboring field does not transmit energy (electrical energy) far, the resonance process can transmit energy with lower energy loss compared to the case where electromagnetic waves are used that transmit energy (electrical energy) with the use of radiation field that transmits energy away.
[0053] Figure 4 is a diagram to explain the problem that can arise when the vehicle is guided using the camera 120 shown in figure 1.
[0054] With reference to figure 4, when the power transmission unit 220 is in a position 220A, the power transmission unit 220 is in the visual field of the camera 120 and the auxiliary parking operation can be performed using the camera 120. However, when the power receiving unit 110 is installed on or on the bottom surface of the vehicle, it is ne
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It is necessary to move the vehicle 100 so that the electric power transmission unit 220 reaches a position 220B. The neighbor of position 220B is in the hidden focus of camera 120 and, therefore, auxiliary parking operation using the image captured by camera 120 cannot be performed.
[0055] It is conceivable that the auxiliary parking operation using camera 120 is performed to some extent and the position is then estimated. However, this can cause misalignment and there is a fear that the transmission and reception of electrical energy cannot be performed either. In addition, there is a possibility that a front wheel will turn on the electric power transmission unit 220 or the vehicle contacts another obstacle when the vehicle moves excessively backwards.
[0056] For this reason, in this embodiment, after the electric power transmission unit 220 is positioned in the hidden focus of the camera 120, the transmission and reception of weak electric power is carried out between the electric power transmission unit 220 and the unit receiver of electrical energy 110 and based on the transmission and reception of weak electrical energy, the auxiliary parking operation is performed. This makes it possible to accurately indicate the parking position even after the electrical power transmission unit 220 is positioned under the vehicle as shown by position 220B.
[0057] In order to prevent vehicle 100 from moving excessively to cause a front wheel to rotate in the electric power transmission unit 220 or to cause vehicle 100 to contact another obstacle, control is performed to stop vehicle 100 when electric power is not well received by the electric power receiving unit 110 even after the vehicle 100 is moved so that the electric power transmission unit 220 is positioned beyond the range
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16/42 admitted as shown by position 220C. For example, the driver is alerted to stop vehicle 100 or the vehicle is automatically stopped when the position is not found, in which the electrical power receiving unit 110 can receive electrical energy in good condition, even after the vehicle 100 is moved for a distance L1 (1.5 m, for example) after the part of the power transmission unit 220 is positioned in the hidden focus of the camera 120. The distance L1 is determined depending on the precision margin of the alignment conducted using the receiving unit of electric power 110.
[0058] Figure 5 is a diagram showing a schematic configuration related to the transmission and reception of energy between the vehicle and the power supply apparatus shown in this embodiment.
[0059] With reference to figure 5, the power supply device 200 includes the power transmission unit 220, the high frequency power supply device 210 and the communication unit 240. Vehicle 100 includes the power supply unit communication 130, the power receiving unit 110, a rectifier 140, a relay 146, a resistance load 144, a voltage measurement portion of the received energy (voltage sensor) 190, and a charging device (DC converter / CC 142) to charge an electricity storage device (not shown).
[0060] Communication unit 240 and communication unit 130 communicate wirelessly with each other to exchange information used for alignment of the electrical power receiving unit 110 and the electrical power transmitting unit 220. For temporarily connecting the resistance load 144 at the output of the electrical energy receiving unit 110 via relay 146, the measurement portion of the received energy voltage 190 is made possible to obtain the information
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17/42 tion of the voltage that is used to determine whether the conditions for receiving electrical energy are met. The request to transmit weak electrical energy to obtain voltage information is transmitted from the vehicle 100 to the power supply apparatus 200 via communication units 130 and 240.
[0061] Figure 6 is a configuration diagram showing details of vehicle 100 shown in figures 1 and 5. With reference to figure 6, vehicle 100 includes the electricity storage device 150, a main relay of the SMR1 system, elevator converter 162, inverters 164 and 166, motor generators 172 and 174, an engine 176, a power distribution mechanism 177 and a drive wheel 178.
[0062] Vehicle 100 also includes a self-resonating coil 112, a secondary coil 114, rectifier 140, DC / DC converter 142, a main relay of the SMR2 system and voltage sensor 190.
[0063] Vehicle 100 still includes a 180 controller, the camera
120, the communication unit 130 and a power supply button 122.
[0064] Vehicle 100 is equipped with engine 176 and engine generator 173 as a source of motive power. Engine 176 and engine generators 172 and 174 are connected to power distribution mechanism 177. Vehicle 100 is driven by the driving force generated by at least one of engine 176 and engine generator 174. The driving power generated by motor 176 is distributed in two paths by the power distribution mechanism 177. Specifically, one path is the path of the power transmission to the drive wheel 178 and the other path is the path of the energy transmission to the engine generator 172.
[0065] The engine generator 172 is a rotating electrical machine of
AC and its examples include a three-phase synchronous AC motor, in
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18/42 that permanent magnets are embedded in the rotor. Motor generator 172 generates electrical energy using kinetic energy supplied from motor 176 which is distributed by power distribution mechanism 177. When the charge state (SOC) of the electricity storage device 150 falls below a predetermined value , energy 176 begins operation and engine generator 172 generates electricity, thereby charging the electricity storage device 150.
[0066] Motor generator 174 is also a rotating electric AC machine and, as in the case of motor generator 172, its examples include a three-phase AC synchronous motor, in which permanent magnets are embedded in the rotor. The engine generator 174 generates the driving force using at least one of the electrical energy stored in the electricity storage device 150 and the electrical energy generated by the motor generator 172. The driving force generated by the motor generator 174 is transmitted to the drive wheel 178.
[0067] When the vehicle is braked or its acceleration down a slope, the mechanical energy stored in the vehicle in the form of the kinetic energy and potential energy, is used to rotate the engine generator 174 via the drive wheel 178 and the engine generator 174 works like an electric generator. In this way, engine generator 174 functions as a regenerative brake that generates a braking force converting mechanical energy to electrical energy. The electrical energy generated by the engine generator 174 is stored in the electricity storage device 150.
[0068] As a power distribution mechanism 177, a planetary gear including a solar gear, pinions, a carrier, and an annular gear can be used. The pinions engage with the sun gear and ring gear. The carrier
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19/42 swivelly supports the pinions and is connected to the crankshaft of the engine 176. The solar gear is connected to the rotating shaft of the motor generator 172. The annular gear is connected to the rotating shaft of the motor generator 174 on the drive wheel 178 .
[0069] The electricity storage device 150 is a rechargeable direct current (DC) power source and its examples include secondary batteries such as lithium ion batteries and nickel hydrogen batteries. The electricity storage device 150 stores the electrical energy supplied from the DC / DC converter 142 and stores the electrical energy that is generated by the motor generators 172 and 174. The electricity storage device 150 supplies the stored electrical energy to the elevator converter 162. A large capacity capacitor can be used as an electricity storage device 150. The electricity storage device 150 is not limited as long as it functions as a temporary electrical energy storage area that can temporarily store the electrical energy supplied from the device power supply 200 (figure 1) and the electrical energy generated by the motor generators 172 and 174, and supplies the electrical power to the elevator converter 162.
[0070] The main relay of the SMR1 system is placed between the electricity storage device 150 and the elevator converter 162. When an SE1 signal from controller 180 is activated, the main relay of the SMR1 system electrically connects the electricity storage device 150 to the elevator converter 162, and when the signal SE1 is deactivated, the main relay of the SMR1 system disconnects the electric line between the electricity storage device 150 and the elevator converter 162. The elevator converter 162 raises the voltage of the PL2 positive line to a voltage equal to or higher than the voltage emitted from the electrical storage device
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20/42 dity 150, based on a PWC signal from controller 180. Examples of elevator converter 162 include a DC cutter circuit.
[0071] Inverters 164 and 166 are provided for motor generators 172 and 174, respectively. Drive 164 drives motor generator 172 according to a PWI1 signal from controller 180, and drive 166 drives motor generator 174 according to a PWI2 signal from controller 180. Examples of drives 164 and 166 include bridge circuits three-phase.
[0072] Both ends of the secondary self-resonant coil 112 are connected to a capacitor 111 with a switch (relay 113) placed between them, and when the switch (relay 113) is brought into conduction, the secondary self-resonant coil 112 resonates with the primary self-resonant coil of the power supply device 200 via electromagnetic field. Electricity is received from the power supply device 200 due to resonance. Although an example is shown in figure 6, where the capacitor
111 is provided, the adjustment in relation to the primary self-resonating coil can be carried out so that resonance occurs due to the rotating ability of the coil instead of the capacitor.
[0073] The number of turns of the secondary self-resonant coil
112 is appropriately adjusted based on the distance between the secondary self-resonant coils 112 and the primary self-resonant coil of the power supply device 200, the resonance frequency of the primary self-resonant coil and the secondary self-resonant coil 112, etc., so that the Q factor (Q> 100, for example) which indicates the resonance intensity of the primary self-resonant coil and secondary self-resonant coil 112, cover that indicates the degree of coupling between them, etc. it becomes great.
[0074] The secondary coil 114 is arranged coaxially with the
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21/42 secondary self-resonant coil 112 and can be magnetically coupled to the secondary self-resonant coil 112 via electromagnetic induction. The secondary coil 114 receives, via electromagnetic induction, the electrical energy received by the secondary self-resonant coil 112 to emit electrical energy to the rectifier 140. The secondary self-resonant coil 112 and the secondary coil 114 form the energy receiving unit 110 shown in figure 1.
[0075] Rectifier 140 rectifies the AC power received by secondary coil 114. Based on a PWD signal from controller 180, the DC / DC converter 142 converts the electrical energy rectified by rectifier 140 to a voltage level of the device electricity storage 150 and emits electricity to the electricity storage device 150.
[0076] The main relay of the SMR2 system is placed between the DC / DC converter 142 and the electricity storage device 150. When an SE2 signal from controller 180 is activated, the main relay of the SMR 2 system electrically connects the device electricity storage 150 to the DC / DC converter 142, and when the SE2 signal is deactivated, the main relay of the SMR2 system disconnects the power line between the electricity storage device 150 and the DC / DC converter 142. The sensor voltage sensor 190 detects the VR voltage between the rectifier 140 and the DC / DC converter 142 and outputs the detected value to the controller 180.
[0077] Resistor 144 and relay 146 connected in series are placed between rectifier 140 and DC / DC converter 142. Relay 146 is controlled to be driven by controller 180 when the vehicle position is adjusted to perform vehicle 100 non-contact power supply.
[0078] Controller 180 generates the PWC, PWI1, and PWI2 signals to drive the elevator converter 162, and the motor generators 172 and 174,
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22/42 respectively, based on the amount of accelerator operation, vehicle speed and signals from other various sensors. Controller 180 sends the generated signals PWC, PWI1 and PWI2 to elevator converter 162 and inverters 164 and 166, respectively. When the vehicle is traveling, controller 180 activates signal SE1 to switch on the main relay of the SMR1 system, and disables signal SE2 to switch off the main relay of the SMR2 system.
[0079] When the electric power is fed from the power supply device 200 (figure 1) to vehicle 100, controller 180 receives the image captured by camera 120 from camera 120. In addition, controller 180 receives, from power supply of energy 200, information about the electrical energy (voltage and current) emitted from the power supply device 200 via communication unit 130 and receives, from voltage sensor 190, the detected value of the voltage that is detected by the voltage sensor 190. Controller 180 performs vehicle parking control by the process to be described below, so that the vehicle is guided to the power transmission unit 220 (figure 1) of the power supply device 200, based on these Dice.
[0080] When the parking control to guide to the power transmission unit 220 is completed, the controller 180 sends, to the power supply device 200, an instruction to power the power via communication unit 130 and activates the SE2 signal to connect the main relay of the SMR2 system. Controller 180 then generates the PWD signal to drive the DC / DC converter 142 and outputs the generated PWD signal to the DC / DC converter 142.
[0081] Figure 7 is a circuit diagram to explain the electric power receiving unit 110 on the vehicle side and the electric power transmission unit 220 on the power supply side Petition 870190077666, of 8/12/2019, pg. 26/55
23/42 energy in more detail.
[0082] With reference to figure 7, the high frequency power supply device 210 is represented by a high frequency AC power supply 213 and a resistor 211 representing the impedance of the power supply.
[0083] The electrical power transmission unit 220 includes a primary coil 232 connected to the high frequency power supply device 210, a primary self-resonant coil 234 that is magnetically coupled to primary coil 232 via electromagnetic induction and a capacitor 242 connected via of the primary self-resonant coil 234.
[0084] An electrical energy receiving unit 110 includes the secondary self-resonant coil 112 that resonates with the primary self-resonant coil 234 via electromagnetic field, and capacitor 111 and relay 113 that are connected in series through the secondary self-resonant coil 112. The relay 113 is controlled to be driving when electricity is received.
[0085] Electricity receiver unit 110 further includes secondary coil 114 which is magnetically coupled to secondary self-resonant coil 112. AC power received by secondary coil 114 is rectified by rectifier 140. Capacitor C1 and connected to the rectifier output 140 and relay 146 and resistor 144 that are used when the relative position between the vehicle and the power supply installation is adjusted are connected between the terminals of capacitor C1. A charger device (DC / DC converter 142) is further connected to the output side of rectifier 140 to convert the voltage to an appropriate charging voltage and the converted charging voltage is supplied to the battery (electricity storage device 150).
[0086] Resistor 144 is adjusted to have an impedance of 50
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24/42 ohms, for example, and this value is adjusted to be associated with the impedance represented by resistor 211 of the high frequency power supply device 210.
[0087] When the vehicle stop position is adjusted to perform the vehicle's non-contact power supply, voltage sensor 19 detects the voltage through resistor 144 and sends the detected value VR to controller 180.
[0088] On the other hand, when the vehicle position adjustment is completed and the vehicle is being charged from an external power source by the non-contact power supply, voltage sensor 190 detects, as the detected value VR, the input voltage to the DC / DC converter 142.
[0089] Figure 8 is a functional block diagram of the controller
180 shown in figure 6. With reference to figure 8, controller 180 includes a control unit (IPA) -electronics (ECU) 410, an electric power direction (EPS) 420, an engine generator (MG) -ECU 430 , an electronically controlled brake (ECB) 440, an electric parking brake (EPB) 450, a resonance ECU 460, and a hybrid vehicle (HV) -ECU 470.
[0090] The IPA-ECU 410 performs the guidance control to guide the vehicle to the power transmission unit 220 (figure 1) of the power supply device 200 based on the image information received from the camera 120 when the mode vehicle operating mode is the loading mode (first guidance control). [0091] Specifically, the IPA-ECU 410 recognizes the power transmission unit 220 based on the image information received from the camera 120. The power transmission unit 220 is provided with a plurality of light portions 230 that show the position and orientation of the 220 power transmission unit. The IPA-ECU 410 recognizes the positional relationship between the
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25/42 vehicle and electric power transmission unit 220 (roughly estimated distance and orientation) based on the image of the plurality of luminous portions 230 captured by camera 120. Based on the recognition result, the IPA-ECU 410 issues an instruction EPS 420 in order to guide the vehicle to the electric power transmission unit 220 in an appropriate direction.
[0092] IPA-ECU 410 provides, for HV-ECU 470, notification of the completion of the guidance control (first guidance control) based on the image information received from camera 120 when the vehicle approaches the transmission unit power 220 so that the power transmission unit 220 is positioned under the vehicle body and it becomes impossible for the camera 120 to capture the power transmission unit 220. The EPS 420 performs automatic control of the direction of according to the instructions sent from IPA-ECU 410 during the first guidance control.
[0093] The MG-ECU 430 controls the engine generators 172 and 174 and the elevator converter 162 according to the instructions sent from the HV-ECU 470. Specifically, the MG-ECU 430 generates signals to drive the engine generators 172 and 174 and elevator converter 162 and outputs signals to inverters 164 and 166 and elevator converter 162. [0094] The ECB 440 controls the vehicle's braking according to the instructions sent from HV-ECU 470. Specifically, the ECB 440 controls the hydraulic brake according to the instructions sent from HV-ECU 470 and performs cooperative control of the hydraulic brake and regenerative brake using engine generator 174. The EPB 450 controls the electric parking brake according to the instructions sent from HV- ECU 470.
[0095] The resonance ECU 460 receives information on the electrical energy emitted from the power supply device 200.
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26/42 power supply device 200 (figure 1) via communication unit 130. The resonance ECU 460 receives, from voltage sensor 190 (figures 6 and 7), the detected value of voltage VR indicating the voltage of the electrical energy received by the vehicle. The resonance ECU 460 detects the distance between the power transmission unit 220 of the power supply device 200 and the power receiver unit 110 of the vehicle, for example, by comparing the voltage VR and the voltage transmitted from the power supply device power 200. Resonance ECU 460 then performs the second vehicle guidance process to guide vehicle 100 based on the detected distance.
[0096] The HV-ECU 470 moves the vehicle 100 by controlling the MG-ECU
430 for driving the vehicle based on the result of one of the first vehicle guidance process and the second vehicle guidance process. The HV-ECU 470 performs a process of stopping the vehicle 100 when the electrical energy received by the electrical energy receiving unit 110 of the electrical transmission unit 220 does not satisfy a predetermined electrical energy receiving condition, on the basis of which it is determined whether it is possible to start receiving electricity, even after the vehicle has been moved by the MG-ECU 430 beyond a predetermined distance after the IPA-ECU 410 becomes unable to detect the position of the 220 power transmission unit with based on the image. This process can be a process of automatically applying a brake or it can be a process of instructing the driver to press a brake pedal. [0097] The HV-ECU 470 for the reception of the electric power via the electric power receiving unit 110 and discontinues the guide made by the resonance ECU 460 when the electric power received by the electric power receiving unit 110 from the transmission unit of electricity 220 does not satisfy a predetermined
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27/42 electrical energy reception condition, on the basis of which it is determined whether it is possible to start receiving electrical energy, even after the vehicle has been moved by the MG-ECU 430 beyond the predetermined distance after the IPA-ECU 410 has become if unable to detect the position of the electric power transmission unit 220 based on the image.
[0098] The HV-ECU 470 ends the guide carried out by the resonance ECU 460 and begins the preparation to load the electricity storage device 150 in the vehicle via the electricity transmission unit 220, when the electrical energy received by the receiving unit power unit 110 of the power transmission unit 220 satisfies the electrical power receiving condition before the vehicle has been moved a predetermined distance after the IPA-ECU 410 becomes unable to detect the position of the power transmission unit 220 based on the image.
[0099] It is more preferable that after automatically stopping the vehicle 100 and discontinuing the guide made by the resonance ECU 460, the HV-ECU 470 restart the transmission or reception of the electrical energy via the electrical energy receiving unit 110 in response to the instruction (operation to adjust the shift lever for the parking lane) from the driver after the driver changes the position of the vehicle. Then, the HV-ECU 470 starts charging the electricity storage device 150 in the vehicle via the power transmission unit 220 when the power received by the power receiving unit 110 from the power transmission unit 220 satisfies the condition of receiving electrical energy and, on the other hand, HV-ECU 470 alerts the driver when the electrical energy received by the electrical energy receiving unit 110 from the electrical transmission unit 220 does not satisfy the receiving condition of electricity.
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28/42 [00100] Figure 9 is a flowchart (the first half) to explain the control performed in the step of adjusting the vehicle's position when the supply of energies in contact is performed.
[00101] Figures 10A and 10B show a flow chart (the second half) to explain the control performed in the step of adjusting the vehicle's position when the non-contact power supply is performed.
[00102] On the left side of each of figures 9, 10A and 10B, the control performed on the side of the vehicle is shown and in its part on the right side, the control performed on the side of the power supply device is shown.
[00103] With reference to figures 1 and 9, a vehicle stopping process is carried out in step S1 on the side of the vehicle and subsequently, in step S2, it is detected if the power supply button 122 is brought into an ON state. When the power supply button is not brought to the ON state, controller 180 waits until the power supply button is brought to the ON state. When it is detected that the power supply button 122 is brought to the ON state in step S2, the process proceeds to step 3. In step S3, controller 180 initiates communication with the power supply device 200 using of communication unit 130.
[00104] On the power supply side, once the process starts at step S51, the process waits at step S52 until there is a request for communication from the vehicle side and when there is a request to start communication, communication starts at step S53.
[00105] On the vehicle side, the control to bring the relay 113 to an ON state is carried out in step S4 subsequent to the process of starting communication in step S3. Then, in step S5, parking control is started. In the first stage of
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29/42 parking, an intelligent parking assist system (IPA) using a camera is used.
[00106] When the vehicle approaches the power supply position to a certain extent, a distance detection request is set to an ON state on controller 180 (YES in step S6).
[00107] Referring to figures 1 and 10A and 10B, on the side of the power supply device, subsequent to step 53, the process waits until the test signal transmission request is set to an ON state in step S54.
[00108] On the other hand, on the vehicle side, the process moves from step S6 to step S7 and controller 180 brings relay 146 to the ON state. In step S8, the notification that the test signal transmission request is brought to the ON state is transmitted to the side of the power supply device. The power supply device then detects that the test signal transmission request is brought to the ON state in step S54 and advances the process to step S55 to send a test signal to the vehicle. Although the test signal may have the same electrical energy as that sent after charging starts, it is preferable that the test signal is set to be a weak signal (weak electrical power) that is weaker than the signal sent when the Main power supply operation is performed.
[00109] The arrival of a vehicle in the area, in which electrical energy can be supplied, is detected based on the fact that the voltage across resistor 144 caused by the test signal reaches a certain voltage.
[00110] While the voltage on the primary side (voltage emitted from the power supply device 200) is constant, the voltage on the secondary side (voltage received by the vehicle 100) varies depending on the distance L between the power transmission unit
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30/42
220 of the power supply device 200 and the electric power receiving unit 110 of the vehicle 100. Thus, it is possible to prepare a map or similar by measuring the relationships between the voltage on the primary side and the voltage on the secondary side in progress, for example , to detect the distance between the electric power transmission unit 220 and the electric power receiver unit 110 based on the detected value of the VR voltage indicating the secondary side voltage.
[00111] Note that the current on the primary side (electrical current emitted from the power supply device 200) also varies depending on the distance L between the electric power transmission unit 220 and the electric power receiver unit 110 and therefore , the distance between the electric power transmission unit 220 and the electric power receiver unit 110 can be detected based on the detected value of the electric current output from the power supply apparatus 200 using this relationship.
[00112] When the resonance ECU 460 detects the distance between the power transmission unit 220 and the power receiving unit 110, the resonance ECU 460 outputs the distance information to the HV-ECU 470. When the ECU resonance 460 receive the instruction to start charging from the HV-ECU 470, the resonance ECU 460 turns on the main relay of the SMR2 system by activating the SE2 signal that is output to the main relay of the SMR2 system. The resonance ECU 460 then generates the signal to drive the DC / DC converter 142 and output the generated signal to the DC / DC converter 142.
[00113] The HV-ECU 470 issues the control instructions for the MGECU 430 and ECB 440 according to the operating status of the accelerator pedal and / or brake pedal, the state of vehicle activation, etc. when the vehicle's operating model is the mode of
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31/42 activation. When the driver provides the instruction to activate the parking brake, for example, by operating a parking brake switch, the HV-ECU 470 issues an instruction to operate the EPB 450.
[00114] On the other hand, when the vehicle's operating mode is the charging mode, the HV-ECU 470 establishes a communication with the power supply device 200 (figure 1) via the communication unit 130 and issues an instruction switch to activate the power supply device 200 to the power supply device 200 via communication unit 130. When the power supply device 200 is activated, the HV-ECU 470 issues an instruction to switch on the light portions 230 provided in the power transmission unit 220 of the power supply device 200 to the power supply device 200 via communication unit 130. When the light portions 230 are switched on, the HV-ECU 470 emits to the power supply device power 200 via the communication unit 130, a guide control indication signal indicating the guidance control to guide the vehicle 100 to the unit power transmission 220 is being carried out and in addition, the HV-ECU 470 issues, for the IPAECU 410, an instruction to perform a guidance control (first guidance control) using the image information provided by the camera 120.
[00115] In addition, when the HV-ECU 470 receives news of the completion of the first guidance control of the IPA-ECU 410, the HVECU 470 performs a guidance control (second guidance control) using information on the distance between the electric power transmission unit 220 and electric power receiving unit 110. Specifically, the HV-ECU 470 receives information about the distance between the electric power transmission unit 220
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32/42 of the power supply device 200 and the electric power receiving unit 110 of the vehicle from the resonance ECU 460, and based on distance information, the HV-ECU 470 issues instructions for MG-ECU 430 and ECB 440 which controls the drive and braking, respectively, of the vehicle, so that the distance between the electric power transmission unit 220 and the electric power receiver unit 110 is minimized.
[00116] In steps S10 and S11 in figure 10A, it is determined whether the parking operation is completed. Specifically in step S10, it is determined whether the vehicle's travel distance is within an anticipated range. The travel distance of the vehicle here is calculated from the product of the vehicle speed and the elapsed time.
[00117] When it is determined in step S10 that the distance of the vehicle's path is beyond the anticipated range, the process advances to step S20 (operation mode 2). The anticipated range can be 1.5m, for example, after the power transmission unit 220 is positioned in the hidden focus of camera 120 as described using figure 4. Since the accuracy of the vehicle's speed sensor is not high at low vehicle speeds, it is necessary to select a limit value that determines the anticipated range, considering the detection error of the vehicle speed sensor.
[00118] When it is determined in step S10 that the distance of the vehicle's path is not beyond the anticipated range, the process advances to step S11 and it is determined whether the voltage detected by voltage sensor 190 is equal to or higher than the limit value Vt1. [00119] Figure 11 is a diagram showing a relationship between the distance of the vehicle's path and the voltage of the received energy. As shown in figure 11, the voltage of the received energy V increases as the distance of the vehicle's path approaches the point,
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33/42 where the positional deviation is zero. When the position, at which the positional deviation is zero, is passed, the voltage of the received energy V begins to decrease. The limit value Vt1 is a determination limit value, based on which the stop instruction is issued to the vehicle, and the limit value Vt1 is determined by measuring the relationship between the distance between the power transmission unit 220 and the electrical power receiving unit 110 and voltage in progress. [00120] On the other hand, the limit value Vt2 shown in figure 11 is a limit value determined based on the allowable electromagnetic field escape intensity which is an electromagnetic field strength that escapes when the transmission and reception of energy at the maximum output of the energy are realized and the limit value Vt2 is less than the limit value Vt1.
[00121] With reference again to figure 10A, when the voltage of the received energy is not equal to or higher than the limit value Vt1 in step S11, the process returns to step S10. Controller 180 repeatedly determines whether the electrical energy receiving coil (secondary self-resonant coil 112) is positioned relative to the electrical power transmission coil (primary self-resonating coil 234) so as to be able to receive the electrical energy from the transmission coil of electricity and during which controller 180 determines the direction of travel of the vehicle so that the electrical energy receiving coil is positioned relative to the electrical energy transmission coil, in order to be able to receive the electrical energy from the electrical coil. electric power transmission. [00122] The calculation of the distance of the vehicle path performed in step S10 will be described in detail below. Figure 12 is a flow chart to explain the detection of the distance of the vehicle path performed in step S10 of figure 10 A.
[00123] With reference to figure 12, when the guide using the loop
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34/42 VR coil gem is started in step S101, the adjustment is made so that the distance increase is calculated using the product of the vehicle speed and the cycle time (8,192m, for example) regardless of position detection using the VR coil voltage, as shown by step S102. Vehicle speed is detected by the vehicle speed sensor.
[00124] The distances are integrated in step S103 and determined in step S104 if the integrated value of the distances is equal to or greater than a limit value (150cm, for example). When the integrated value has not reached the limit value in step 104, the_process returns to step 103 and the integration of the distances is continued. In this case, the parking operation with the auxiliary parking operation are continued.
[00125] When the integrated distance value is equal to or greater than 150 cm in step S104, the vehicle speed regulation is adjusted to 0 km / h in order to prevent excessive advance as described with reference to figure 4.
[00126] Figure 13 is a waveform diagram of the operation showing an example of the operation, in which the vehicle speed regulation is set to zero according to the flowchart shown in figure 12.
[00127] With reference to figure 13, at time t1, the IPA flag is set to ON and the vehicle speed regulation is set to 1.8 km / h. The IPA flag is brought to an ON state when the driver selects an intelligent way to assist parking. From t1 to t2, the IPA mode (parking assist mode) is the guidance mode, where the guide is performed using the camera 120. When the power transmission unit 220 is positioned in the hidden focus of the camera 120 at time t2, the IPA mode is changed to the guide mode, where the guide is performed
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35/42 using the coil voltage, at time t2. When the distance reaches the limit value, that is, 1.5m, in steps S103 and S104 of figure 12, the F flag is changed from OFF to ON in time t3, so that the vehicle speed regulation is set to 0km / h and the vehicle is stopped.
[00128] With reference again to figures 10A and 10B, when the voltage of the received energy is equal to, or higher than, the limit value Vt1 in step S11, controller 180 issues the instruction to stop the vehicle in step 12. The instruction to stop the vehicle can be an instruction to cause the driver to stop the vehicle by compressing the brake pedal or it can be an instruction to perform a process of automatically applying the brake. However, there is a possibility that the vehicle will move after the instruction to stop the vehicle is issued as shown by the arrow D1 in figure 11 and therefore, when, after the vehicle is stopped, the received power voltage is equal to or higher than the limit value Vt2 in step 13, the vehicle's travel distance is within the anticipated range, the elapsed time does not exceed the time limit and the temperature is appropriate to carry out the loading, the process proceeds to step S14. When one of the conditions is not met in step S13, the process moves to step S20 (mode 2).
[00129] In step S14, it is determined whether the change position is brought to the P range. In step S14, when the change position ao is in the P range, the process of step S13 is repeated until the change position is brought into lane P, and monitoring of vehicle misalignment is continued.
[00130] In step S14, when the change position is brought to the P range, the process advances to step S15. In this case, it is determined that the position where the vehicle is stopped, is fixed and that the parking operation is completed, and the controller 180
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36/42 of the vehicle sets the test signal transmission request to an OFF state. Specifically, changing the shift position to the P range triggers the transmission stop of weak electrical energy (test signal).
[00131] When the power supply device is notified of the regulation via communication, it is detected in step S56 that the test signal transmission request is switched to the OFF state and the test signal transmission is interrupted in step S57.
[00132] In the power supply device, subsequently, it is detected in step S58 if the power supply request is brought in an ON state.
[00133] On the vehicle side, the process moves to S16 after the signal transmission request is set to the OFF state in step S15.
[00134] In step S16, relay 146 is controlled to switch from the ON state to the OFF state. Then, the HV-ECU 470 issues, to the power supply device 200 via communication unit 130, the instruction to start the power supply from the power supply device 200 and the HV-ECU 470 issues the instruction to start charging to the resonance ECU 460. In step S17, the HV-ECU 470 notifies the power supply device of the fact that the power supply request is brought into an ON state, via communication.
[00135] On the side of the power supply device, it is detected that the power supply order is brought in the ON state in step S 58 and high power supply is started in step S 59. Thus, on the vehicle side, the reception of electrical energy is initiated in step S18.
[00136] Figure 14 is a flow chart to explain the process of operation mode 2, performed in step S20 of figures 10A and 10B.
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Operating mode 2 is a mode that is selected when detecting the distance to be performed using the coil on a weak electrical energy is not performed and the driver attempts the parking operation again.
[00137] With reference to figure 14, when the process of operation mode 2 is started in step S20, it is asked to stop the test signal (weak electrical power) in step S21. In step S22, the driver is provided with, via indication on a display, the blinking of a lamp, etc., with the notification of the occurrence of the abnormality that does not allow the reception of electrical energy even after the anticipated lane is passed. In response to this, the driver conducts a manual adjustment of the vehicle position.
[00138] In step S23, it is determined whether the vehicle is stopped. If it is not confirmed that the vehicle is at a standstill, the abnormality notification provision is made in step S22. When it is confirmed that the vehicle is stopped at step S23, the process moves to step S24 and it is determined whether the shift position is in the P range. [00139] Until it is confirmed in step S24 that the shift position has been brought to range P, the process is stopped. When it is confirmed in step S24 that the shift position has been brought to the P range, the vehicle is considered not to move and therefore is required to transmit weak electrical energy for a short period of time (about 1 second ) in step S25. In step S26, it is determined whether the received power voltage is equal to or higher than the limit value Vt2. In step S26, it is determined whether or not it is possible to receive electrical energy as a result of the driver manually adjusting the vehicle position. It should be noted that the limit value Vt2 is set to a value lower than the limit value Vt1 as described above with reference to figure 11.
[00140] When the received power voltage is equal to or more
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38/42 higher than the limit value Vt2 in step S26, the process moves to step S28 and the electric energy transmission is started. On the other hand, when the received power voltage is not equal to or higher than the limit value Vt2 in step S26, the process proceeds to step S 27 and the driver is notified of the occurrence of the abnormality that the charging cannot be started.
[00141] As described above, in this embodiment, after the electric power transmission unit 220 is positioned in the hidden focus of the camera 120, the transmission and reception of weak electric power is carried out between the electric power transmission unit 220 and the unit receiver of electrical energy 110 and based on the transmission and reception of weak electrical energy, the auxiliary parking operation is performed. This makes it possible to accurately indicate the parking position even after the electric power transmission unit 220 is positioned under the vehicle.
[00142] In addition, control is performed to stop vehicle 100 when electrical energy is not well received by electrical energy receiving unit 110 even after vehicle 100 is moved so that the electrical transmission unit is positioned beyond the assumed range. Thus, it is possible to prevent the situation from occurring, in which the vehicle 100 is excessively moved and as a result, a front wheel of the vehicle rotates in the electric power transmission unit 220 or the vehicle 100 contacts another obstacle, for example.
[00143] In addition, even when automatic parking is not performed successfully, electrical energy is received after confirming whether it is possible to receive electrical energy when the driver manually adjusts the position, in which the vehicle is stopped, so that the opportunity to load is increased without increasing the need to perform laborious operations.
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39/42 [00144] Finally, the realization is summarized again with reference to the drawings. With reference to figures 1, 6 and 8, the vehicle auxiliary parking system shown in this embodiment includes: camera 120 that captures an image of an area close to vehicle 100; the first vehicle guidance section (IPA-ECU 410) that recognizes the position of the power transmission unit 220 external to the vehicle based on the image obtained via camera 120 to guide the vehicle 100 to the power transmission unit 220 ; the electrical energy receiving unit 110 which receives electrical energy from the electrical energy transmission unit 220 in a non-contact manner; a second vehicle guidance section (resonance ECU 460) that detects the distance between the power transmission unit 220 and the vehicle 100 based on the detected distance; and a control section (HV-ECU 470) that causes the vehicle 100 to move by controlling a vehicle drive section (MG-ECU 430) that drives the vehicle, based on the outputs of the first and second vehicle guidance sections. vehicle. The control section (HV-ECU 470) performs a process of stopping the vehicle 100 when the electrical energy received by the electrical energy receiving unit 110 of the electrical energy transmission unit 220 does not satisfy a first condition that the electrical energy is equal to or higher than a first limit value, even after the control section (HV-ECU 470) led the vehicle drive section (MG-ECU 430) to move the vehicle beyond a predetermined distance after the first section of vehicle guidance (IPA-ECU 410) become unable to detect the position of the power transmission unit 220 based on the image. It is preferable that the first limit value is determined by measuring the relationship between the distance between the electric power transmission unit 220 and the electric power receiver unit 110 and the voltage in progress.
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40/42 [00145] It is preferable that the control section (HV-ECU 470) stops the reception of electrical energy via the electrical energy receiving unit 110 and discontinues a guide made by the second vehicle guidance section (resonance ECU 460 ) when the electric power received by the electric power receiving unit 110 of the electric power transmission unit 220 does not satisfy the first condition even after the control section (HV-ECU 470) has taken the vehicle drive section (MG-ECU 430) to move the vehicle beyond the predetermined distance, after the first vehicle guidance section (IPA-ECU 410) is unable to detect the position of the electric power transmission unit 220 based on the image.
[00146] It is more preferable that the control section (HV-ECU 470) finishes the guide performed by the second vehicle guidance section (resonance ECU 460) and begins the preparation to load an electricity storage device 150 in the vehicle via the electric power transmission unit 220, when the electric power received by the electric power receiving unit 110 of the electric power transmission unit 220 meets the first condition before the vehicle has been moved along the predetermined distance, after the first section of vehicle guidance (IPA-ECU 410) become unable to detect the position of the power transmission unit 220 based on the image.
[00147] It is preferable that, after the control section (HV-ECU 470) automatically stops the vehicle 100 and discontinues the guide made by the second vehicle guidance section (resonance ECU 460), the control section (HV-ECU 470) restarts the transmission or reception of electrical energy via the electrical energy receiving unit 110 in response to an instruction from a conductor, and the control section (HV-ECU 470) initiates charging of the electricity storage device 150 in the vehicle via the drive
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41/42 electric power transmission 220 when the electric power received by the electric power receiving unit 110 of the electric power transmission unit 220 satisfies a second condition that the electric power is equal to or higher than a second limit value, and on the other hand, the control section (HV-ECU 470) alerts the driver when the electrical energy received by the electrical energy receiving unit 110 of the electrical energy transmission unit 220 does not satisfy the second condition. It is preferable that the second limit value is less than the first limit value. In this case, as shown in figure 11, the limit value Vt1 and the limit value Vt2 are adjusted in order to satisfy the relationship: limit value Vt1> limit value Vt2. It is more preferable that the second limit value is determined based on a permissible escaping electromagnetic field strength which is an escaping electromagnetic field strength when the transmission and reception of energy is carried out at a maximum energy output.
[00148] It is more preferable for the driver to provide the instruction by performing an operation to bring the vehicle drive section (MG-ECU 430) into a parking state, such as an operation to bring the shift lever to the parking position or an operation of pushing a parking button.
[00149] It is preferable that, as shown in figure 7, the electrical energy receiving unit 110 includes the secondary self-resonant coil 112, which is an electrical energy receiving coil that receives electrical energy in a non-contact manner via electromagnetic field resonance coming from the primary self-resonant coil 234, which is an electrical energy transmission coil of the electrical energy transmission unit 220.
[00150] The embodiments described here are merely examples
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42/42 and should not be considered as restrictive. The scope of the invention is not determined by the above description, however, by the claims, and it is intended to include all modifications within the scope of the claims and their equivalents.

权利要求:
Claims (11)
[1]
1. Vehicle parking assist system (100) comprising:
a camera (120) that captures an image of an area close to a vehicle (100);
a first vehicle guidance section (410) that recognizes a position of an electric power transmission unit (220) external to the vehicle (100) based on the image obtained via the camera (120) to guide the vehicle (100) to the electric power transmission unit (220);
characterized by an electrical energy receiving section (110) that receives electrical energy from the electrical power transmission unit (220) in a non-contact manner;
a second vehicle guidance section (460) (100) that guides the vehicle (100) based on an electrical energy received by the electrical energy receiving section (110); and a control section (470) that drives the vehicle (100) to move by controlling a vehicle drive section (430) that drives the vehicle (100) based on the outputs of the first (410) and second (460) sections guidance section, in which the control section (470) performs a process of stopping the vehicle when the electrical energy received by the electrical energy receiving section (110) of the electrical transmission unit (220) does not satisfy a first condition that a electrical energy is equal to, or higher than, a first limit value (Vt1), even after the control section (470) has led the vehicle drive section (430) to move the vehicle (100) in addition to a predetermined distance after the first vehicle guidance section (410) becomes unable to detect the position of the
Petition 870200001151, of 03/01/2020, p. 4/13
[2]
2/5 electrical power (220) based on the image.
2. Method of assisting vehicle parking (100) comprising:
based on an image obtained via a camera (120) that captures an image of an area close to a vehicle (100), recognizing a position of an electric power transmission unit (220) external to the vehicle (100);
guide the vehicle (100) to the electric power transmission unit (220) based on the image;
characterized by receiving electrical energy from the electrical power transmission unit (220) via an electrical energy receiving section (110) which receives electrical energy in a non-contact manner;
guide the vehicle (100) based on the electrical energy received by the electrical energy receiving section (110);
make the vehicle (100) move by performing the control to activate the vehicle (100), according to the guidance based on the image and guidance based on the electrical energy; and stop the vehicle (100) when the electrical energy received by the electrical energy receiving section (110) of the electrical power transmission unit (220) does not satisfy a first condition that the electrical energy is equal to, or higher than, a first limit value (Vt1), even after the vehicle (100) has moved beyond a predetermined distance after it becomes impossible to detect the position of the electric power transmission unit (220) based on the image.
[3]
3. Vehicle (100) comprising:
an electrical energy receiving section (110) which receives electrical energy from an electrical power transmission unit (220) in a non-contact manner; and a controller (180) including a guide section
Petition 870200001151, of 03/01/2020, p. 5/13
3/5 that guides a vehicle based on the electrical energy received by the electrical energy receiving section, characterized by the fact that the controller is configured to perform at least one of the requests for the electrical energy transmission unit (220) to stop the transmission of electrical energy, interrupt the movement of the vehicle (100) providing notification to the operator when the electrical energy received does not satisfy the predetermined condition, even after the vehicle (100) has moved beyond a predetermined distance after the guidance section starts the guidance of the vehicle (100), and provide notification to the operator when the electrical energy received that varies as the vehicle (100) moves does not satisfy a predetermined condition while electrical energy is transmitted from the electrical power transmission unit (220 ).
[4]
4. Vehicle (100) according to claim 3, characterized by the fact that the controller is configured to perform at least one of the requests for the electric power transmission unit (220) to stop the electric power transmission, interrupting the movement vehicle (100), and providing notification to the operator when the electrical energy received does not meet the predetermined condition even after the vehicle (100) has moved a predetermined distance while the electrical energy is transmitted from the electrical power transmission unit ( 220).
[5]
5. Vehicle (100) according to claim 3, characterized by the fact that the controller includes:
a vehicle drive section (430) that drives the vehicle (100), based on an exit from the guidance section; and a control section (470) that causes the vehicle (100) to move by controlling the vehicle drive section (430).
[6]
6. Vehicle (100) according to claim 3, charac-
Petition 870200001151, of 03/01/2020, p. 6/13
4/5 due to the fact that the predetermined condition is that the electrical energy received is equal to, or higher than, a first limit value.
[7]
Vehicle (100) according to claim 3, characterized in that it further comprises:
a detection section (190) that detects the electrical energy received by the electrical energy receiving section (110).
[8]
8. Vehicle (100) according to claim 3, characterized by the fact that:
the controller is configured to request the electrical transmission unit (220) to initiate electrical transmission when a shift position is changed to a parking lane after the electrical transmission unit (220) is requested to stop the transmission of electrical energy since the electrical energy received that varies as the vehicle (100) moves does not satisfy the predetermined condition, while electrical energy is transmitted from the electrical energy transmission unit (220).
[9]
9. Vehicle (100) according to claim 3, characterized by the fact that the controller is configured to, after the received electrical energy that varies as the vehicle (100) moves, satisfies the predetermined condition while the electrical energy is transmitted from electric power transmission unit, request the electric power transmission unit (220) to transmit greater electric energy than the electric power that was transmitted from the electric power transmission unit (220) before the electric power satisfies the predetermined condition.
[10]
10. Vehicle (100) according to claim 3, characterized by the fact that:
Petition 870200001151, of 03/01/2020, p. 7/13
5/5 the controller is configured to, after the received electrical energy, which varies as the vehicle (100) moves, satisfy the predetermined condition while the electrical energy is transmitted from the electrical transmission unit and a change position is changed for a parking lane, request the electrical power transmission unit (220) to transmit electrical energy greater than the electrical energy that was transmitted from the electrical power transmission unit (220) before the received electrical power met the predetermined condition.
[11]
11. Vehicle parking assist system comprising:
an electrical energy receiving section (110) which receives electrical energy from an electrical power transmission unit (220) in a non-contact manner;
a guidance section (460) that guides a vehicle based on the electrical energy received by the electrical energy receiving section (110); and a control section (470) that drives the vehicle (100) to move by controlling a vehicle drive section (430) that drives the vehicle (100), based on an exit from the guidance section, characterized by fact that the control section (470) is configured to perform at least one of stopping the movement of the vehicle (100), providing notification to an operator, and requiring the electric power transmission unit (220) to stop the power transmission electrical when the electrical energy received by the electrical energy receiving section (110) of the electrical power transmission unit does not satisfy a predetermined condition even after the control section (470) has taken, through the vehicle drive section (430) , the vehicle (100) to move beyond a predetermined distance after the guidance section starts, causing the vehicle (100) to move.

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同族专利:

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公开号 | 公开日

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JP2011188679A|2011-09-22|

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BR112012016729B8|2021-03-09|

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CN102791517B|2015-03-25|

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KR101373682B1|2014-03-13|

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US8423223B2|2013-04-16|

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KR20120067366A|2012-06-25|

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US20120323423A1|2012-12-20|

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EP2544917A1|2013-01-16|

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JP4905571B2|2012-03-28|

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ES2475151T3|2014-07-10|

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EP2544917B1|2014-04-23|

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JP2012080770A|2012-04-19|

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RU2012138467A|2014-04-20|

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RU2557647C2|2015-07-27|

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BR112012016729A2|2018-06-05|

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WO2011110924A1|2011-09-15|

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JP5418583B2|2014-02-19|

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CN102791517A|2012-11-21|

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法律状态:
2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-06-11| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|

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2019-10-08| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|

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2020-02-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-04-07| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 09/03/2011, OBSERVADAS AS CONDICOES LEGAIS. |

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2021-03-09| B16C| Correction of notification of the grant|Free format text: REF. RPI 2570 DE 07/04/2020 QUANTO AO ENDERECO. |

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