• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention concerns a drive system and a method of driving a vehicle (1). The drive system comprises a combustion engine with output shaft (2a) which is connected to a first component (10) of a planetary gear, a gear box with an input shaft (3a) which is connected to a second component ( 12) of the planetary gear and an electric machine (9) which is connected to a third component (11) of the planetary gear. The drive system comprises a low voltage battery (21 ) with a rated voltage of at most 60 volt and an electric switch (23) with which the low voltage battery (21) is connectable to the electric machine (9) during at least a starting process of the vehicle (1)·
    公开号:SE1250701A1
    申请号:SE1250701
    申请日:2012-06-27
    公开日:2013-12-28
    发明作者:Nils-Gunnar Vaagstedt；Niklas Pettersson
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    connected to an output shaft of the internal combustion engine, a second component of the planetary gearbox is connected to an input shaft of the gearbox and a third component of the planetary gearbox is connected to a rotor of an electric machine. The electric machine is connected to an energy storage so that it can work alternately as a motor and generator. The speed of electrical machines can be regulated steplessly.
    By regulating the speed of the electric machine, the input shaft of the gearbox can be given a desired speed. With a hybrid system according to SE 1051384-4, no coupling mechanism needs to be used in the vehicle's driveline.
    With a hybrid system according to SE 1051384-4, no clutch mechanism needs to be used in the vehicle's driveline. However, the hybrid drive system depends on the hybrid battery functioning to enable the vehicle to start.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a drive system for a vehicle of the type mentioned in the introduction where it is substantially always possible to start the vehicle.
    This object is achieved with the drive system of the kind mentioned in the introduction, which is characterized by the features stated in the characterizing part of claim 1. When the internal combustion engine starts, a first of the planetary gear components rotates with the internal combustion engine idle speed. The other component of the planetary gear unit that is connected to the gearbox is stationary as long as the vehicle is stationary. The third of the planetary gear components connected to the rotor of the electric machine rotates backwards at a negative speed. In order for a driving torque to be transmitted to the gearbox, the rotor of the electrical machine must be braked. By connecting the low voltage battery to the electric machine, a braking torque can be created which counteracts the negative rotation of the rotor. As a result, a driving torque can be transferred to the gearbox so that the vehicle starts. A relatively small power is required to brake the rotor of the electric machine when starting the vehicle.
    A low voltage battery can usually add this power and perform this task. During the start-up process, the electric machine generates electrical energy that is led to the low-voltage battery. There is thus no risk of the low-voltage battery being discharged at the start of the vehicle. According to one embodiment of the present invention, the drive system comprises a DC-DC transformer adapted to convert electrical energy conducted from the electrical machine to the low voltage battery. An electric machine in a hybrid vehicle is fed with and normally generates a relatively high voltage. To enable the transfer of electrical energy from the electrical machine to the low voltage battery during the start-up process, it is advisable to use a DC-DC transformer.
    According to an embodiment of the present invention, the DC-DC transformer is bidirectional so that it can also conduct and convert electrical energy conducted from the low voltage battery to the electrical machine. Under certain operating conditions, electrical energy may need to be supplied from the low-voltage battery to the electrical machine.
    To also enable the transmission of electrical energy in this direction, it is convenient to use a bidirectional DC-DC transformer. Alternatively, two separate DC-DC transformers can be used where one DC-DC transformer conducts electrical energy in one of said directions and the other DC-DC transformer conducts electrical energy in the opposite direction.
    According to another preferred embodiment of the invention, the low-voltage battery is an existing 24-volt battery in the vehicle, which i.a. used to start the internal combustion engine.
    Heavier vehicles are usually equipped with a starter battery that has a high capacity. With the help of such a battery it is possible to brake the rotor of the electric machine and start the vehicle. Conventional 24-volt batteries in vehicles are relatively inexpensive. If the battery unexpectedly does not withstand the stresses to which it is subjected when the vehicle starts, it can be easily replaced and replaced by a new one.
    According to an embodiment of the present invention, the drive system comprises a control unit which is adapted to control the amount of electrical energy conducted from the electrical machine to the low voltage battery by means of control equipment so that the vehicle obtains a desired speed increase during the starting process. Advantageously, the vehicle can obtain a substantially constant increase in speed during the starting process.
    The starting process of the vehicle may refer to the time it takes for the vehicle to accelerate from a standstill to a speed at which a starting gear can be disengaged and replaced by a higher gear in the gearbox. The starting process may alternatively refer to a time period of the order of 1 to 3 seconds or another suitable length.
    According to an embodiment of the invention, the drive system comprises an energy storage and that the low-voltage battery is connected to the electrical machine when the energy storage is judged to have an undesirable function. In this case, the vehicle is a hybrid vehicle driven by a primary engine in the form of an internal combustion engine and a secondary engine in the form of said electric machine. In addition to the energy storage, the vehicle includes control equipment to regulate the flow of electrical energy between the energy storage and the electrical machine. The electric machine thus has, in addition to the function of enabling control of the speed of the input shaft of the gearbox, also the ability to work alternately as engine and generator depending on the operating condition of the vehicle. With the help of the low-voltage battery and an electrical switch, it is possible to at least temporarily replace the energy storage as it has an undesirable function. After starting with the low-voltage battery, the vehicle can be driven to a service point or similar where the energy storage can be repaired or replaced by a new one. The energy storage may include a battery and / or a capacitor.
    According to another preferred embodiment of the invention, the drive system comprises a control unit which is adapted to control the electric machine by means of the low voltage battery at operating times when the vehicle is being switched. If the low voltage battery has a sufficient capacity, it is possible to also use the low voltage battery to at least help to create a torque-free condition in the gearbox when an existing gear is to be taken out of the gearbox and a new gear is to be put in. This control can be combined with a motor control filter. controls the speed of the internal combustion engine when loading and unloading gears in the gearbox. The same control unit or two separate control units can be used in the different cases.
    According to another preferred embodiment of the invention, the drive system comprises a control unit which is adapted to receive information regarding a parameter for determining whether the energy storage has an undesired function. The control unit may, for example, receive information from an electrical measuring instrument which measures a parameter related to the electrical energy conducted between the ordinary energy storage and the electrical machine. The electrical measuring instrument can measure a pair of parameters relating to the current and / or voltage of the electrical energy. If the energy store does not substantially deliver or receive any electrical energy during operation, it should have an unwanted function.
    According to another preferred embodiment of the invention, the drive system comprises an indicating means which indicates when the energy storage has an undesired function.
    The indicating means may be a warning lamp or an audible alarm which is activated if the energy storage does not function as required. With the aid of such an indicating means, the driver is immediately informed when the energy storage does not function in a desired manner. The fact that the hybrid bearing has an undesirable function may mean that the energy bearing does not supply electrical energy in a desired manner or does not generate electrical energy in a desired manner, cannot maintain a required charge level, etc. A control unit can be adapted to automatically set the electrical switch to a position so that the low voltage battery is connected to the electric machine at times when the energy storage is judged to have an undesirable function. Alternatively, the driver can manually reset the electrical switch with a button or the like when the indicator means indicates that the energy storage is out of order.
    According to another torque extender of the invention, the output shaft of the internal combustion engine is connected to the sun gear of the planetary gear, the input shaft of the gearbox is connected to the planetary gear holder of the planetary gear and the rotor of the electric machine is connected to the ring gear of the planetary gear. With such a design, the constituent components can be given a compact construction. The sun gear and the planet gear holder can be connected to the output shaft of the internal combustion engine and the input shaft of the gearbox, respectively, by means of spline dryers or the like. This ensures that the sun gear rotates at the same speed as the output shaft of the internal combustion engine and that the planetary gear holder rotates at the same speed as the input shaft of the gearbox. The rotor of the electric machine may be fixedly mounted on an outer peripheral surface of the ring gear. The inner peripheral surface of the ring wheel is usually provided with teeth.
    The outer peripheral surface of the ring wheel is usually smooth and pairs very well to support the rotor of the electric machine. The ring gear and rotor of the electric machine thus form a rotatable unit. Alternatively, the rotor of the electric machine may be connected to the ring gear via a transmission. However, it is possible to connect the output shaft of the internal combustion engine, the input shaft of the gearbox and the rotor of the electric machine to any of the other components of the planetary gearbox. The object stated initially is also achieved by the method according to claims 1-1.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, exemplary embodiments of the invention are described by way of example with reference to the accompanying drawings, in which: Fig. 1 shows a driveline of a vehicle with a propulsion system according to the present invention; Fig. 2 shows the propulsion system in more detail, Fig. 3 shows how the speed of the different components of the planetary gear can vary during a starting process of the vehicle, Fig. 4 shows how the torque of the different components of the planetary gear can vary during a starting process of the vehicle and Fig. 5 shows an alternative embodiment of the drive system.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Fig. 1 shows a driveline for a heavy vehicle 1. The driveline comprises an earring motor 2, a gearbox 3, a number of drive shafts 4 and drive wheels 5. .
    Fig. 2 shows the components of the intermediate portion 6 in more detail.
    The internal combustion engine 2 is provided with an output shaft 2a and the gearbox 3 with an input shaft 3a in the intermediate portion 6. The output shaft 2a of the internal combustion engine is arranged coaxially with respect to the input shaft Ba of the gearbox.
    The output shaft Za of the internal combustion engine and the input shaft 3a of the gearbox are rotatably arranged about a common axis of rotation 7. The intermediate portion 6 comprises a housing 8 enclosing an electric machine 9 and a planetary gear. The electric machine 9 usually comprises a stator 9a and a rotor 9b. The stator 9a comprises a stator core which is suitably attached to the inside of the housing 8. The stator core includes the windings of the stator. The electric machine 9 is adapted to use stored electrical energy during certain operating conditions to supply driving force to the input shaft 3a of the gearbox and during other operating uses the kinetic energy of the input shaft 3 of the gearbox to utilize and store electrical energy.
    The planetary gear is arranged substantially radially inside the stator 9a and rotor 9b of the electric machine. The planetary gear usually comprises a sun gear 10, a ring gear 11 and a planet gear holder 12. The planet gear holder 12 carries a number of gears 13 which are rotatably arranged in a radial space between the teeth of the sun wheel 10 and the ring wheel 11. The sun gear 10 is attached to a peripheral surface of the output shaft 2a of the internal combustion engine. The sun gear 10 and the output shaft 2a of the internal combustion engine rotate as a unit with a first speed nl. The planetary gear holder 12 comprises a mounting portion 12a which is attached to a peripheral surface of the input shaft 3a of the gearbox by means of a spline joint 14. By means of this joint the planetary gear holder 12 and the gearbox input shaft 3a can rotate as a unit with a second speed ng . The ring wheel 11 comprises an outer peripheral surface on which the rotor 9b is fixedly mounted. The rotor 9b and the Iinghjiilet 11 form a rotatable unit which rotates at a third speed m3.
    The vehicle comprises a locking mechanism which is rotatable between a first open position in which planetary gear rice three components 10-12 are allowed to rotate at different speeds and a second locked position in which it locks together two of the planetary gear components 10, 12 so that the planetary gear three components 10 ~ 12 rotate with the same speed. In this form of release, the locking mechanism comprises a displaceable coupling member 15.
    The coupling member 15 is fixed to the output shaft 2a of the dry combustion engine by means of a splines joint 16. The coupling member 15 is in this case rotatably arranged on the output shaft 2a of the internal combustion engine and slidably arranged in an axial direction on the output shaft 2a of the internal combustion engine. The coupling means 15 comprises a coupling portion 15a which is connectable to a coupling portion 12b of the planet gear holder 12. The locking mechanism comprises a schematically shown displacement means 17 adapted to displace the coupling means 15 between the first free position 11 when the coupling portions 15a, 12b are not in engagement with each other and the second locked position 12 when the coupling portions 15a, 12b are in engagement with each other. In the first open position, the output shaft 2 of the internal combustion engine and the input shaft 3 of the gearbox can rotate at different speeds. When the coupling portions 15a, 12b are in engagement with each other, the output shaft 2 of the internal combustion engine and the input shaft 3 of the gearbox will rotate at the same speed.
    An electric control unit 18 is adapted to control the displacement means 17. The control unit 18 is also adapted to determine at which times the electric machine 9 should operate as a motor and at which occasions it should operate as a generator. To determine this, the Control Unit 18 can receive current information from suitable operating parameters. The control unit 18 also controls a schematically shown control equipment 19 which regulates the flow of electrical energy between an energy storage 20 and the stator 9a of the electrical machine. The control unit 18 may be a computer with suitable software for this purpose. The control unit 18 can of course consist of one or two separate control units. At times when the electric machine 9 operates as a motor, stored electrical energy is supplied from the energy store 20 to the stator 9a. At times when the electric machine operates as a generator, electrical energy is supplied from the stator 9a to the energy store 20. The energy store 20 supplies and stores electrical energy with a voltage is of the order of 200-800 Volts. When the intermediate portion 6 between the internal combustion engine 2 and the gearbox 3 in a vehicle is limited, it is required that the electric machine 9 and the planetary gearbox constitute a compact unit. The components of the planetary gear 10-12 are arranged here substantially radially inside the stator 9a of the electric machine. The rotor 9b of the electric machine, the ring gear 11 of the planetary gear, the output shaft 2a of the internal combustion engine and the input shaft 3a of the gearbox are here rotatably arranged around a common axis of rotation 5. With such an embodiment the electric machine 9 and the planetary gear occupy a relatively small space.
    The vehicle comprises a 24 volt battery 21 for starting the internal combustion engine 2 and operating other equipment in the vehicle 1. In heavy vehicles 1, 24 volt batteries 21 with a relatively high capacity are used. The 24 volt battery 21 is, via an electrical line and an electrical switch 23, connectable to the stator 9a of the electrical machine. The electrical line includes a DC-DC transformer 22 between the 24 volt battery 21 and the electrical switch 23. The DC-DC transformer 22 has the capacity to convert electrical energy conducted from the stator 9a of the electrical machine, which supplies electrical energy at the same voltage level as the energy storage. 20, to the voltage level prevailing in the 24 volt battery 21. The DC-DC transformer 22 may advantageously be bidirectional. It can thus also, if necessary, conduct electrical energy from the 24 volt battery 20 to the stator 7 of the electrical machine. When electrical energy is conducted in this direction, the DC-DC transformer 22 converts electrical energy with the voltage level 24 volts to the higher voltage level of the hybrid battery. In this case, alternatively two separate DC-DC transformers can be used which conduct electrical energy in each of said directions.
    During operation of the electrical machine 9, the control unit 18 receives information from an electrical meter 24 which shields a parameter related to the electrical energy transported to and from the energy storage 20. The electrical meter can measure current and voltage. If the measured electrical energy falls below an expected value, the energy storage 20 should not function as intended. If substantially no electrical energy is transported to and from the energy storage 20 during operation of the vehicle, it is not considered to have a desired function. If the control unit 18 judges that the energy storage 20 does not have a desired function, it activates an indicating means 25 in the driver's cab. The indicating means may be a flashing light or an audible alarm or the like. the function of the hydrating means is to draw the driver's attention to the fact that the energy storage 20 is out of order.
    The control unit 18 can now automatically switch the electrical switch 23 and connect the 24-volt battery 20 to the electrical machine 9 in the manner shown in Fig. 2.
    Alternatively, the operator can manually activate the connection between the 24-volt battery 20 and the electrical machine with a button or the like. The vehicle 1 is equipped with an engine control function 26 with which the speed of the dry combustion engine n; can be regulated.
    The control unit 18 thus has the possibility of activating the engine control lever 25 when loading and unloading gears in the gearbox 3 in order to create a torque-free state in the gearbox 3.
    Figs. 3 and 4 show an example of how the speed n and the torque T can vary with the time t for the output shaft 2a of the dry combustion engine, the rotor 9b of the electric machine and the input shaft 3a of the gearbox during a starting process of the vehicle 1 when the energy storage 20 is out of order. Speed n; and step T; of the output shaft 2a of the internal combustion engine is shown in broken lines, speed n; and step T; of the input shaft 3 of the gearbox is shown in solid lines and speed n; and torque Tg. of the electrical machine 9 is shown in dotted lines. The ratio of the number of teeth of the sun gear 9 z; and the gear number 22 of the ring gear is in this example 21 / z2 = 0.7.
    If the energy storage 20 is judged to be out of order, the control unit 18 sets the electrical switch 23 in a position so that the 24 volt battery 21 is connected to the electric machine 9. The internal combustion engine 2 starts at t * 0. The internal combustion engine 2 initially idles at n1 = 500 rpm and torque T1 = 200 Nm.
    The input shaft 3a of the gearbox is stationary and thus initially has a speed nf 0 rpm. Since all the components in the planetary gear are connected to each other with a certain gear ratio, the ring gear ll receives an initial speed ng which is determined by the other two speeds m, ng. With the above-mentioned gear ratio 21 / z2 = 0.7, the ring gear has a speed n3 = -350 rpm. The ring wheel 11 will here rotate in an opposite direction relative to the sun wheel 10.
    The control unit 18 then controls the control mechanism 19 so that the electric machine 9 provides a torque Tg which in this case is 300 Nm. Since the ring wheel 11 rotates in the opposite direction relative to the sun wheel 10, the ring wheel is braked by the torque T3.
    Thus, electrical energy is generated which is conducted from the electric machine to the low-voltage battery 21 via the DC ~ DC transformer 22. The input shaft 3a of the gearbox here obtains the torque T2 = 500 Nm which is the sum of the internal combustion torque T1 and the braking torque T2 of the electric machine. Moment T; starts the input shaft 3a of the gearbox so that it starts to rotate, ie. n; becomes greater than zero.
    This starts the vehicle 1.
    At time A, the speed n of the internal combustion engine is increased; this ensures that the ring gear 11 can rotate at an opposite speed n; of a suitable size so that it can continue to have the ring wheel 11 and ensure that the input shaft 3a of the gearbox obtains an increasing speed n; and the vehicle at a successively increasing speed during the starting process. Moments TL Tz, T; exhibits constant values up to a time B.
    At time B, the start process is over. At time B, the internal combustion engine 2 is braked with an exhaust brake, a steerable turbo or retarded in an armored manner so that the speed decreases. The speed n1 of the internal combustion engine 2 decreases at the same time as the input shaft 3a of the gearbox maintains a constant speed ng. Vehicle 1 is now driven at a constant speed. When the speed nl of the internal combustion engine 2 decreases at the same time as the speed n of the gearbox; constant speed increases the speed of the electric machine 9 ng.
    Rotor speed n; changes from being a negative speed to a positive one. At time C, all components of the planetary gear rotate at the same speed. The control unit 18 activates the displacement means 17 which displaces the coupling body 15 so that the coupling portions 15a, 12b engage with each other. The output shaft 2 of the internal combustion engine and the input shaft 3 of the gearbox are now locked in relation to each other and will thus rotate at the same speed. After reading the components of the planetary gear unit, only the internal combustion engine 2 is responsible for the operation of the vehicle 1. The torque T of the electric machine; drops here to 0. The electric machine 9 rotates at the same speed n; as the output shaft 2 of the internal combustion engine and the input shaft 3 of the gearbox.
    When continuing to travel, a higher gear needs to be inserted in the gearbox 3. The control unit 18 activates the displacement means 17 which displaces the coupling means 15 to a disengaged position. The connection between the output shaft 2 of the combustion engine and the input shaft 3 of the gearbox ceases. The control unit 18 calculates the speed nl at which the input shaft 2a of the internal combustion engine needs to be driven in order to achieve a torque-free state in the gearbox 3. The control unit 18 activates the engine control function 26 which gives the internal combustion engine 2 the calculated speed n; after which the gear is disengaged. After the existing gear has been disengaged, a new gear 11 must be engaged. The control unit 18 here calculates the speed n; which the output shaft 2 of the internal combustion engine needs to be driven with in order for it to rotate at the same speed as the input shaft 3a of the gearbox. The control unit 18 activates the engine control function 26 which gives the internal combustion engine 2 the calculated speed n; after which the new gear is engaged.
    The control unit 18 then reactivates the motor control function 26 to control the speed n1 so that all components in the planetary gear receive the same speed m, ng, ng. When all components of the planetary gear rotate at the same speed, the control unit 18 activates the displacement means 17 which displaces the coupling means 15 so that the coupling portions 15a, 12b engage with each other. After reading the planetary gear, only the internal combustion engine 2 is responsible for the operation of the vehicle.
    In this case, the 24 volt starter battery 21 is used instead of the energy storage 20 during a starting process by the vehicle 1. Thus, the vehicle 1 can be started and driven to a service point or the like where the energy storage 20 can be replaced or repaired. During a starting process, the 24 volt battery 21 receives electrical energy from the electric machine 9. However, it is not excluded to also use the 24 volt battery 2.1 and the electric machine 9 to control the speed ng of the ring gear 11 to obtain the above-mentioned state in the gearbox 3 at laying and loading of gears. In this case, the 24 volt battery 21 must be able to both receive and supply electrical energy to the electrical machine 9.
    Fig. 5 shows a simplified embodiment of the drive system. In this case, the vehicle does not include a hybrid battery. Otherwise, the drive system includes the same components as in the embodiments in Fig. 2. The planetary gear, the electric machine 9 and the 24 volt battery 21 here replace a conventional coupling mechanism. In this case, the vehicle 1 is always started by means of the 24-volt battery 21, after which the motor control function 26 is used when the vehicle is switched.
    The invention is in no way limited to the embodiments described in the drawings but can be varied freely within the scope of the claims. For example, a transmission with a gear ratio can be arranged between the rotor 9 and the ring wheel 11. The rotor 9 and the ring wheel 11 thus do not have to rotate at the same speed.
    权利要求:
    Claims (23)
    [1]
    A drive system for a vehicle (1), the drive system comprising an internal combustion engine (2) with an output shaft (2a), a gearbox (3) with an input shaft (3a), an electric machine (9) comprising a stator (9a) and a rotor (9b), and a planetary gear comprising a solar wheel shaft (10), a ring gear (11) and a planetary gear holder (12), the output shaft (2a) of the internal combustion engine being connected to a first of said components. of the planetary gear so that a rotation of this shaft (2a) leads to a rotation of this component, the input shaft (3a) of the gearbox being connected to a second of said components of the planetary gear so that a rotation of this shaft leads to a rotation of this component and the rotor (9b) of the electric machine are connected to a third of said components of the planetary gear so that a rotation of the rotor (9b) leads to a rotation of this component, characterized in that the drive system comprises a low voltage battery (21) with a rated voltage of maximum 60 v and an electrical switch (23) with which the low voltage battery (21) is connectable to the electrical machine (9) during at least one starting process of
    [2]
    Drive system according to claim 1, characterized in that the drive system comprises a DC-DC transformer (22) which is adapted to convert electrical energy conducted from the electrical machine (9) to the low-voltage battery (21).
    [3]
    Drive system according to claim 2, characterized in that the DC-DC transformer (22) is bidirectional so that it can also conduct and convert electrical energy conducted from the low voltage battery (21) to the electrical machine (9).
    [4]
    Drive system according to claim 2 or 3, characterized in that the low-voltage battery (21) is an existing 24 volt battery in the vehicle (1), which i.a. used to start the internal combustion engine (1).
    [5]
    Drive system according to one of the preceding claims, characterized in that the drive system comprises a control unit (18) which is adapted to control the amount of electrical energy conducted from the electrical machine (9) to the low-voltage battery (21) by means of control equipment (19) so that the vehicle (1) obtains a desired speed increase during the starting process. 10 15 20 25 30 35 13
    [6]
    Drive system according to one of the preceding claims, characterized in that the drive system comprises a control unit (18) which is adapted to control the electric machine (9) by means of the low-voltage battery (21) in the case of operation when the vehicle (1) is switched.
    [7]
    Drive system according to one of the preceding claims, characterized in that the drive system comprises a hybrid energy storage (20) and that a low voltage battery (21) is connected to the electric machine (9) during a starting process of the vehicle and when the hybrid energy storage (20) is judged to have an undesirable function.
    [8]
    Drive system according to one of the preceding claims, characterized in that the drive system comprises a control unit (18) which is adapted to receive information regarding a parameter in order to assess whether the hybrid energy storage (20) has an undesired function.
    [9]
    Drive system according to one of the preceding claims, characterized in that the drive system comprises an indicating means (25) which indicates when the hybrid energy storage (20) is judged to be out of order.
    [10]
    Drive system according to one of the preceding claims, characterized in that the output shaft (2a) of the internal combustion engine is connected to the sun gear (10) of the planetary gear, that the input shaft (3a) of the gearbox is connected to the planetary gear holder (12) of the planetary gear (9b) are connected to the ring gear (11) of the planetary gear.
    [11]
    A method of operating a vehicle (1), wherein the vehicle (1) comprises an internal combustion engine (2) with an output shaft (2a), a gearbox (3) with an input shaft (3a), an electric machine (9) comprising a stator (9a) and a rotor (9b), and a planetary gear comprising a sun gear (10), a ring gear (11) and a planet gear holder (12), the output shaft (2a) of the internal combustion engine being connected to a first of components of the planetary gear so that a rotation of this shaft (2a) leads to a rotation of this component, the input shaft (3a) of the gearbox being connected to a second of said components of the planetary gear so that a rotation of this shaft leads to a rotation of this component and the rotor (9b) of the electric machine are connected to a third of said components of the planetary gear so that a rotation of the rotor leads to a rotation of this component, characterized by the step of connecting the electric machine (9) to a low-voltage battery (21) which has a rated trace of not more than 60 volts during at least one starting process of the vehicle (1). 10 15 20 25 30 35 14
    [12]
    A method according to claim 11, characterized by the step of using a DC-DC transformer (22) to convert electrical energy conducted from the electrical machine (9) to the low voltage battery (21).
    [13]
    A method according to claim 12, characterized in that the step of using a DC-DC transformer atom (22) which is bidirectional so that it can also conduct and convert electrical energy conducted from the low voltage battery (21) to the electrical machine (9).
    [14]
    Method according to claim 12 or 13, characterized in that the step of using a low voltage battery in the form of an existing 24 volt battery (21) in the vehicle (1).
    [15]
    A method according to any one of the preceding claims 11-1 4, a nuclear element of the step of controlling the amount of electrical energy conducted from the electrical machine (9) to the low voltage battery (21) by means of control equipment (19) so that the vehicle obtains a desired speed oiling during the statrt process.
    [16]
    Method according to one of the preceding claims 11 to 15, characterized by the step of controlling the electric machine (9) by means of the low-voltage battery (21) in the operating cases when the vehicle (1) is switched.
    [17]
    A method according to any one of the preceding claims 11-16, characterized by the step of connecting the low voltage battery (21) to the electric machine (9) during a starting process of the vehicle and when a hybrid energy storage (20) in the vehicle is judged to have an undesirable function.
    [18]
    A method according to any one of the preceding claims 11-17, characterized by the steps of receiving information regarding a pair of antennas to determine if the hybrid energy storage (19) has an undesirable function.
    [19]
    Method according to one of the preceding claims 11 to 18, characterized by the step of indicating to a driver of the vehicle when the hybrid energy storage (19) is judged to be out of order.
    [20]
    Method according to any one of the preceding claims 11-19, characterized by the steps of connecting the output shaft (2) of the internal combustion engine to the sun gear (9) of the planetary gear, connecting the input shaft (3) of the gearbox to the planetary gear holder (11) of the planetary gear and connect the rotor (8) of the electric machine to the ring gear (10) of the planetary gear.
    [21]
    A computer program comprising computer program code for causing a computer to implement a method according to any one of claims 11-20 when the computer program code is executed in the computer.
    [22]
    A computer program product comprising a computer storage medium readable by a computer, the computer program code of a computer program according to claim 21 being stored on the data storage medium.
    [23]
    Vehicle comprising a drive system according to any one of claims 1-10.
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    SE536663C2|2014-05-06|Procedure for braking a vehicle
    SE1350394A1|2014-09-28|Gearbox, vehicles with such gearbox, method for controlling such gearbox, computer program for controlling such gearbox, and a computer software product comprising program code
    SE538472C2|2016-07-12|Control of locking means in planetary gear by means of an electric machine
    SE1250701A1|2013-12-28|Drive system and procedure for operating a vehicle
    SE539660C2|2017-10-24|Method of starting an internal combustion engine in a hybrid drive line, vehicles with such a hybrid drive line, computer programs for starting an internal combustion engine, and a computer program product including program code
    SE1350768A1|2013-12-28|Procedure for driving a vehicle
    SE1250704A1|2013-12-28|Drive system and procedure for operating a vehicle
    SE539661C2|2017-10-24|Method for starting an internal combustion engine of a hybrid drive line, vehicles with such an internal combustion engine, computer programs for starting such an internal combustion engine, and a computer program product comprising program code
    BR112014032314B1|2021-12-07|DRIVE SYSTEM FOR A VEHICLE, DRIVE METHOD OF A VEHICLE AND VEHICLE
    SE539232C2|2017-05-23|A method for controlling a hybrid driver, vehicles with such a hybrid driver, computer programs for controlling such a hybrid driver, and a computer software product comprising program code
    SE1250715A1|2013-12-28|Procedure for driving a vehicle
    同族专利:
    公开号 | 公开日
    SE536518C2|2014-01-28|
    BR112014032314A2|2017-06-27|
    EP2867050A1|2015-05-06|
    WO2014003669A1|2014-01-03|
    EP2867050B1|2020-08-05|
    EP2867050A4|2016-05-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE10015912A1|2000-03-30|2001-10-31|Mannesmann Sachs Ag|Electrically-operated clutch for automobile drive train provided by electrical machine with rotor component and winding component|
    US6428438B1|2000-07-26|2002-08-06|New Venture Gear, Inc.|Hybrid automated manual transmission|
    DE50103908D1|2001-12-12|2004-11-04|Siemens Ag|Drive device for a motor vehicle with an internal combustion engine, a starter generator and a manual transmission|
    JP4274268B2|2007-06-19|2009-06-03|トヨタ自動車株式会社|Power transmission device|
    EP2387658A4|2009-01-15|2017-07-26|Volvo Technology Corporation|Electromagnetic, continuously variable transmission power split turbo compound and engine and vehicle comprising such a turbo compound|
    JP5427110B2|2010-05-25|2014-02-26|川崎重工業株式会社|Construction machine and control method thereof|CN107567554B|2015-05-04|2020-03-31|沃尔沃卡车集团|Method for disengaging an inactive gear of a dual clutch transmission and corresponding transmission|
    CN111890950B|2020-08-04|2021-04-06|洪智|Tractor driving device and tractor driving method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1250701A|SE536518C2|2012-06-27|2012-06-27|Drive system and procedure for operating a vehicle|SE1250701A| SE536518C2|2012-06-27|2012-06-27|Drive system and procedure for operating a vehicle|
    EP13809930.4A| EP2867050B1|2012-06-27|2013-06-26|Drive system and method of driving a vehicle|
    PCT/SE2013/050788| WO2014003669A1|2012-06-27|2013-06-26|Drive system and method of driving a vehicle|
    BR112014032314-3A| BR112014032314B1|2012-06-27|2013-06-26|DRIVE SYSTEM FOR A VEHICLE, DRIVE METHOD OF A VEHICLE AND VEHICLE|
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