• 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 relates to an electric drive device I for driving a motor vehicle (1) comprising an electric motor (20), a drive shaft (26) driven by the electric motor (20), a housing (30) in which the electric motor (20) is housed, which housing (30) has a circumferential surface (31) and a substantially annular cross-section, said horizontal direction of said housing circumferential surface (31) and said drive shaft (26) being arranged to run substantially transverse to the longitudinal direction of (70) pre-suspension of the electrical the drive device I, wherein the pendulum suspension said vehicle (1), comprising a pendulum suspension (70) comprises a mounting configuration (72) fixedly connected to the vehicle and at least one and relatively fixedly connected to the housing surface (31) and said mounting mounting configuration (72) by a bearing configuration (80, 82). ) rotatably mounted pendulum mount (74, 76). The invention also relates to a motor vehicle. (Fig. 4)
    公开号:SE1350658A1
    申请号:SE1350658
    申请日:2013-05-30
    公开日:2014-12-01
    发明作者:Daniel Engblom
    申请人:BAE Systems Hägglunds Aktiebolag；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The invention relates to an electric drive device according to the preamble of claim 1. The invention also relates to a motor vehicle.
    BACKGROUND The automotive industry is undergoing a phase of change where vehicles are electrified to a large extent, where a trend is hybridization of varying degrees. High demands are placed on compactness and large power and torque outputs.
    In the case of work vehicles and military vehicles, for example, the passability of the vehicle is also important.
    WO2012066035 discloses an electric shaft for a motor vehicle comprising an electric motor for propelling the vehicle arranged coaxially on said shaft and consequently arranged transversely to the longitudinal extension of the vehicle. The electric shaft has transmission configurations on each side of the electric motor. Such an electric shaft enables a compact and volume-efficient construction.
    OBJECT OF THE INVENTION An object of the present invention is to provide an electric drive device for driving a motor vehicle with a compact and volume-efficient construction which enables improved passability of the motor vehicle. SUMMARY OF THE INVENTION These and other objects, which appear from the following description, are achieved by means of an electric drive device and a motor vehicle of the kind initially indicated and which further have the features set forth in the characterizing part of the appended independent claims 1 and 16.
    Preferred embodiments of the electric drive device are defined in appended dependent claims 2-15.
    According to the invention, the objects are achieved with an electric drive device for driving a motor vehicle comprising an electric motor, a drive shaft driven by the electric motor, a housing in which the electric motor is housed, which housing has a mantle surface and a substantially annular cross-section. drive shafts are arranged to run substantially transversely to the longitudinal direction of said vehicle, characterized by a pendulum suspension for suspending the electric drive device, the pendulum suspension comprising a fixed configuration connected to the vehicle and at least one fixed configuration fixed to the housing surface and fixed configuration of the housing. rotatably mounted pendulum mounting. This makes it possible, with a cone compact and volume-efficient construction of the electric drive device, to improve the passability of the vehicle.
    According to an embodiment of the electric drive device, the electric motor has a stator and a rotor arranged to rotate the drive shaft.
    According to an embodiment of the electric drive device, said drive shaft is arranged for driving two output shafts for driving ground contacting means, represented by various transmission configurations and said output shafts are arranged to run substantially transversely to the longitudinal direction of said vehicle. According to an embodiment of the electric drive device, said fixed configuration is arranged for suspending a front and a rear pendulum mounting. As a result, a stable suspension of the electric drive shaft device is obtained.
    According to an embodiment of the electric drive device, said bearing configuration comprises plain bearings. The advantage of using plain bearings is that it saves space for the pendulum-suspended drive shaft.
    According to an embodiment of the electric drive device, said plain bearing comprises an outer bearing part 10 fixedly connected to said fixed configuration and an inner bearing part fixedly connected to said pendulum fastening and internally and relative to said outer bearing part. This results in a cone-compact and efficient pendulum suspension for the electric drive device.
    According to an embodiment of the electric drive device, said pendulum fixture is connected to a connection unit for media supply of the electric motor arranged at the outer surface of said housing, said media supply being intended to take place via an opening in said outer surface of said housing. By thus arranging the connection unit in connection with the pendulum attachment, the relative movement of the connection unit relative to the vehicle body during oscillation of the electric drive device and where connected cables and wires are relatively small, which facilitates clamping wiring and wiring at the vehicle body as in vehicle frame / vehicle chassis. This consequently makes it possible to minimize the movement of the connection unit during rotation of the pendulum mounting relative to the fixed configuration, whereby, for example, cabling connected to the connection unit and clamped at a fixed part of the vehicle is not affected / twisted to a large extent during said rotation. This further enables, by means of the connection unit in the form of power supply from power electronics media supplying the electric motor, providing an axially compact electric drive device where the electric drive device 4 includes transmission configuration arranged on each side of the electric motor as no cable / cable is required. of the sides of the electric motor said that space is freed up at the spirits for more compact connection of transmission configuration. The transmission configuration can be 5 planetary gear / reduction gear. Furthermore, by supplying the electric motor via the connection unit in the form of coolant and lubricant, and so on, transmission configurations in the form of planetary shafts / reduction shafts, simple and efficient cooling and lubrication of the electric drive device and consequently efficient operation. By being able to connect both wiring for electrical energy, wires for lubricants and coolants and wires for signal connection in the same place, the wiring of wiring / wiring and clamping of the same is facilitated.
    According to an embodiment of the electric drive device, said connection unit is connected below said pendulum mounting within the inner bearing part of said sliding bearing. As a result, the movement of the connection unit during rotation of the pendulum attachment is minimized relative to the fixed configuration in which, for example, the wiper plate connected to the connection unit and clamped at a fixed part of the vehicle is not affected / rotated to a greater extent during said rotation.
    According to an embodiment of the electric drive device, said pendulum fastening is arranged between the upper and lower part of said housing of the mantle surface. As a result, the ground clearance of the vehicle or the height of the vehicle is not affected by the pendulum attachment, whereby such an embodiment of the electric drive device illuminates choices for, for example, mining vehicles which move in limited spaces.
    According to an embodiment of the electric drive device, said pendulum mounting in axial direction is arranged substantially adjacent to a central portion of said housing surface. This results in a stable pendulum suspension. By having the connecting unit connected to said pendulum mounting within said inner bearing part of said plain bearing, replacement of conventional mechanical driveline with electric drive device according to the present invention is facilitated where space centrally in the vehicle is freed up in conventional driveline centrally arranged propeller shaft. in the longitudinal extension of the vehicle for connection with generator.
    According to an embodiment of the electric drive device, said pendulum mounting in the circumferential direction of the nanant surface of the housing is placed adjacent to a horizontal central plane of the mantle surface of the housing. This results in a stable pendulum suspension.
    According to an embodiment of the electric drive device, said media supply includes energy supply by means of power electronics and / or refrigerant and solar fuel pollution.
    According to an embodiment of the electric drive device, an oil sump is arranged at the bottom of the housing in a desired space for said cooling and lubricant supply formed between the electric motor and said housing under the lower part of the electric motor mantle surface. This enables efficient lubrication of gears / gears and the uptake of oil cooling medium for cooling the electric motor.
    According to an embodiment of the electric drive device, the electric motor is arranged eccentrically in the housing in such a way that the center of rotation of the drive shaft of the electric motor runs substantially parallel to and at a distance than a tank center axis of the housing to form said desired space. This enables a compact, volume-efficient and stable device at the same time as space is freed up for, for example, oil sump and / or differential / differential shaft in the housing. Furthermore, it is facilitated to collect connections for media supply, including coolant and lubricant to the oil sump via the connection unit, and to facilitate the removal of cabling via the connection unit out of the house.
    According to one embodiment, the electric drive device comprises a differential device with a shaft configuration arranged in the housing in the desired space between electric motor and housing. A compact solution is obtained with a differential device for differential function, which differential device is connected to planetary shafts, whereby efficient operation is possible. DESCRIPTION OF THE DRAWINGS The present invention will be better understood by reference to the following detailed description of the drawings taken in conjunction with the accompanying drawings, in which like reference numerals appear in like manner throughout the many views, and in which: Fig. 1 schematically illustrates a motor vehicle with an electric drive. I according to an embodiment of the present invention; Fig. 2 schematically illustrates a plan view of a motor vehicle with the electric drive device I in Fig. 1 according to an embodiment of the present invention; Fig. 3 schematically illustrates a front view of an electric drive device I according to an embodiment of the present invention; Fig. 4 schematically shows a radial cross-sectional view of the electric drive device I in Fig. 3; Fig. 5 schematically illustrates a plan view seen from above of the electric drive device I in Fig. 3; Fig. 6a schematically illustrates a system for disturbance via a supply unit of a drive unit of the electric drive device I according to an embodiment of the present invention; and Fig. 6b shows a part of the system according to an alternative variant; Fig. 7a schematically shows an axial cross-sectional view of the electric drive device I in Fig. 3; and Fig. 7b schematically shows a view seen from above of a differential device of the electric drive device I in Fig. 7a. DESCRIPTION OF EMBODIMENTS Fig. 1 schematically illustrates a motor vehicle 1 according to an embodiment of the present invention. The exemplary vehicle 1 consists of a heavy vehicle in the form of a work vehicle such as a mining work vehicle. The vehicle is made according to an alternative variant of a military vehicle. The motor vehicle is made according to a variant of a articulated vehicle. The motor vehicle 1 comprises an electric drive device I according to any one of the embodiments of the present invention. The motor vehicle 1 is intended to be propelled by means of the drive device.
    The motor vehicle 1 comprises a vehicle body 2 comprising a vehicle frame.
    The electric drive device I is arranged to drive output shafts 5. At the duct of the respective output shaft 5, hub means 6a, 6b are arranged. The hub members 6a, 6b are formed according to a variant of hub reductions 6a, 6b. The hub means are constituted according to an alternative variant of drive wheels for tracked vehicles, which according to a variant comprise hub reduction shafts. At the respective hub reduction 6a, 6b, ground contacting means 7a, 7b are arranged for propelling the vehicle 1. Ground contacting means 7a, 7b are formed according to a variant of wheels. According to an alternative variant, the ground contacting members 7a, 7b consist of bands. Said output shafts 5 are arranged to run substantially transversely to the longitudinal direction when the vehicle 1 is intended to be propelled by means of the electric drive device I.
    As can be seen from Fig. 4 and Fig. 7a, the electric drive device comprises in a housing 30 and an electric motor 20 housed in the housing 30 arranged to drive a drive shaft 26. Said output shafts 5 are according to an embodiment arranged substantially coaxially with said electric motor 20, i.e. aligned with the drive shaft 26 of the electric motor. This provides efficient operation of the vehicle 1. According to an alternative embodiment, said drive shaft element 5 is arranged radially offset relative to said electric motor 20, where according to a variant said output 8 shafts 5 are radially offset relative to the electric motor 20. ground contacting means 7a, 7b are displaced from the front in the longitudinal extension of the vehicle so that, among other things, obstruction is improved.
    The electric drive device I further comprises a pendulum suspension 70 for suspending the electric drive device I.
    The pendulum suspension 70 comprises a fixed configuration fixedly connected to the vehicle 1 and a fixed configuration 72 fixedly connected to the shell surface of the housing 30 and relatively named fixed configuration 72 by means of a bearing configuration 82. The electric drive device 1 is consequently rotatable relative to the body 2 of the vehicle.
    According to a variant, the electric drive device I is intended to drive heavy vehicles such as work vehicles.
    Fig. 2 schematically illustrates a plan view of a motor vehicle with the electric drive device I in Fig. 1 according to an embodiment of the present invention. The electric drive shaft device, which forms the rear driving shaft, is pendulum-suspended while the front axle is rigidly fixed in the frame of the vehicle. This will improve the accessibility of the vehicle.
    Fig. 3 schematically illustrates a front view of an electric drive device I according to an embodiment of the present invention, for example an electric drive device I according to Figs. 1 and 2, Fig. 4 a radial cross-sectional view of the electric drive device I in Fig. 3 and Fig. 5. a plan view seen from above of the electric drive device I in Fig. 3.
    The electric drive device I for driving a motor vehicle 1 comprises an electric motor 20 and a drive shaft 26 driven by the electric motor. The electric motor 20 has a substantially circular-cylindrical shape. The electric motor 20 has a jacket surface 21. The electric drive device I further comprises a housing 30 in which the electric motor is housed. The housing has a mantle surface 31 and a substantially annular cross-section. The horizontal direction 31 of the said housing 30 is 31 and the said drive shaft 26 is arranged to run substantially transversely to the longitudinal direction of the said vehicle, which follows from Fig. 1 and Fig. 2. The said housing 30 is in the axial direction, i.e. transverse to the longitudinal direction has the vehicle, arranged substantially centrally relative to the vehicle and said outgoing axles 5.
    The electric motor 20 has a stator 22 and a rotor 24 arranged to rotate the drive shaft 26. Said drive shaft is arranged to drive said two output shafts 5 for driving the ground contacting means, preferably via suitable transmission configurations 50, 60. Said output shafts 5 are arranged to run substantially transverse to the longitudinal direction of said vehicle.
    According to the embodiment illustrated in Fig. 3, the electric drive device I comprises transmission configurations 50, 60 arranged on each side of the electric motor 20.
    The electric drive device I further comprises, as shown in Figs. 3 and 4, a differential device 40 superimposed and connected to said transmission configurations 50, 60 for achieving differential function.
    The electric drive device I further comprises a pendulum suspension 70 for suspending the electric drive device I.
    The pendulum suspension 70 comprises a fixed configuration 72 fixedly connected to the vehicle 20 and a fixed configuration 72 fixedly connected to the housing surface of the housing and relatively named fixed configuration by means of a bearing configuration 80 including a front pendulum mounting 74 and a rear pendulum mounting device 76. rotatable relative to the body 2 of the vehicle. Said fixed configuration 72 is arranged for suspension of said front and rear pendulum mounting 74, 76.
    Said bearing configuration 80, 82 comprises sliding bearings 80, 82. Said sliding bearing comprises an outer bearing part 80a, 80b fixedly connected to said fixed configuration 72 and a slidable inner part 808, 80b slidably connected to said pendulum fastening 74, 76 and internally and relatively said outer bearing part 80a, 80b. , 82b. Said outer and inner bearing part 80a, 80b, 80b, 82b constitute bearing paths for said pendulum suspension 70. One of said front and rear pendulum fasteners 74, 76, having the front pendulum fastener 74, is connected to a housing 30 attached to the outer surface 31 of said housing 30. connection unit 100 for media supply of the electric motor 20 and transmission configuration 50, 60. Said media supply is intended to take place via an opening in the housing surface 31 of said housing.
    Said connection unit 100 is connected to said pendulum mounting 70 inside the inner bearing part 80b of said sliding bearing 80. The aforementioned media supply includes energy supply by means of power electronics as well as refrigerant and lubricant supply. Said connection unit 100 includes connection interfaces 100a for connecting wiring for said power electronics and lines for said refrigerant and lubricant supply. An embodiment of said connection interface is described in more detail with reference to Figs. 6a and 6b.
    The housing surface 31 of said housing 30 has an upper portion 30a and a lower portion 30b. Said pendulum attachment 74 is arranged between said housing 30, the upper and lower part 30a, 30b of the shell surface 31. Said pendulum bracket 74 is arranged in the axial direction substantially adjacent to a central portion of said housing 30 mantle surface 31. Said pendulum bracket is circumferentially of the housing surface 31 of the housing 30 located adjacent to a horizontal rivet plane of the housing surface 31 of the housing 30.
    In this case, the front pendulum fixture 74 is arranged on the front side of said housing 30 mantle surface 31 between said housing 30 mantle surface 31 mantle surface 31, axially arranged substantially adjacent to a central portion of said housing 30 mantle surface 31 and circumferentially of 11 The mantle surface 31 of the housing 30 is located adjacent to a horizontal center plane of the mantle surface 31 of the housing 30. Correspondingly, the rear pendulum fixture 76 is arranged on the rear side of said housing 30 mantle surface 31 between said upper surface 30 of said housing 30 mantle surface 31a, 30b arranged substantially adjacent to a central portion of said housing 30 mantle surface 31 and circumferentially of the housing 30 mantle surface 31 located adjacent to a horizontal center plane of the housing 30 mantle surface 31. The rear pendulum fixture 76 is accordingly arranged at the housing 30 mantle surface 31 10 substantially opposite and aligned with the front pendulum mount 74 so that a tank shaft Y between it the front pendulum mounting and the rear pendulum mounting, ie. the shaft Y around which the pendulum-suspended electric drive device I is pivotable relative to the vehicle's trough / chassis, essentially runs in the longitudinal extension of the vehicle. In this case, said connecting unit 100 is arranged on the front side of said housing 30 mantle surface 31 between said housing 30 mantle surface 31 upper surface and lower portion 30a, 30b, in axial direction arranged substantially adjacent to a central portion of said housing 30 mantle surface 31 and in circumferential direction of the mantle surface 31 of the housing 30 located adjacent to a horizontal center plane of the mantle surface 31 of the housing 30.
    By arranging the connection unit 100 between the upper and lower part 30a, 30b of the jacket surface 31, ground clearance of the vehicle is not affected by the connection unit 100 nor the height of the vehicle. Furthermore, the connecting unit 100 according to a variant is arranged in connection with the housing surface 31 of the housing so that stench in the form of, for example, stone, gravel, clay and / or water torn from other drive shafts connected to ground contacting means such as wheels is avoided on the connecting unit 100.
    Said bearing configuration 80, 82 comprises a front sliding bearing 80 with an outer bearing part 80a fixedly connected to said fixed configuration 72 and a 12 and slidably connected inner bearing part 80b slidably connected to said front pendulum mounting 74 and internally and relative to said outer bearing part 80a.
    Said bearing configuration 80, 82 comprises a rear sliding bearing 82 with an outer bearing part 82a fixedly connected to said fixed configuration 72 and a slidable inner bearing part 82b fixedly connected to said rear pendulum fastening 76 and internally and relative to said outer bearing part 82a.
    The fixed configuration 72 includes a front fixed portion 72a and a rear fixed portion 72b.
    The front fixed portion 72a is arranged in front of the housing 30 and the rear fixed portion 72b is arranged behind the housing 30. The front fixed portion 72a is fixedly connected to the body of the vehicle 2 / chassis 2 / frame 2 at one end and fixedly connected to the outer at an opposite end. the bearing part 80a, of the front sliding bearing 80.
    The rear fixed portion 72b is fixedly connected at one end to the body 2 of the vehicle 2 / chassis 2 / frame 2 and at an opposite end fixedly connected to the outer bearing part 82a of the rear sliding bearing 82.
    As shown as an example in Fig. 3, said media supply includes electrical energy supply as well as coolant and lubricant supply. The connection unit 100 is configured to connect wiring 105 for electrical power supply and lines 101, 102a, 102b, 104a, 104b for coolant and lubricant. Said media supply is consequently arranged to take place via the connection unit 100 which is arranged in connection with the mantle surface of the housing inside the inner bearing part of the bearing configuration.
    The connection unit 100 includes the connection interface for cabling for the said electrical power supply.
    The connection unit 100 includes connection interfaces for connecting a line configuration for pumping coolant and means of refrigeration and means of supply of the transmission and configuration of transmissions configuration 13 50, 60 and electric motor by means of a pump unit not shown. The line configuration includes a take-up line 101 for receiving oil from oil sump for punching via heat exchangers back via the connection unit 100 for supplying electric motor 20 and transmission configurations 50, 60.
    The connection unit 100 includes connection interfaces for said cooling and lubrication lines 101, 102a, 102b, 104a, 104b intended for transporting cooling and lubrication parts for cooling and cordage of electric motor 20 and transmission configurations 50, 60. Said cooling and lubrication lines are arranged to be transmitted via configurations. 50, 60 for lubricating gears of the transmission configuration by means of lubricant, and around the jacket 21 of the electric motor 20 for cooling the electric motor 20 by means of coolant, where lubricant and coolant according to an embodiment are composed of oil from the same cold in the form of oil sump 0.
    An axially running space 36 below the mantle surface of the electric motor 20 is used as oil sump 0. According to this embodiment, the volume becomes accessible by the electric motor 20 being eccentrically arranged relative to the housing 30. The space 36 provides space for shaft configuration 42a, 42b of differential device described with reference to Figs. 7a and 7b, as well as in the requirement of a differential brake / torque vectoring (not shown). Fig. 6a schematically illustrates a system S for supplying supply means via a connection unit of the electric drive device I according to an embodiment of the present invention.
    The system comprises said connection unit 100. The system further comprises a pump unit P arranged in a line configuration to pump coolant and lubricant, according to a variant oil, to a space on the bottom of housing of electric drive device I according to the present invention, through a receiving line 101 via said connection unit 100. The system S further comprises a filter means F arranged downstream of the pump unit P and configured to filter from the space pumped coolant and lubricant. The system 14 S further comprises a heat exchanger HX arranged downstream of the pump unit P and configured to cool heated coolant and lubricant.
    The line configuration includes an inlet line 103 arranged downstream of the heat exchanger HX which is connected to the connection unit 100 for supplying coolant and lubricant to the transmission configuration and electric motor. Said inlet line 103 is branched in connection with the connection unit 100 in a set of supply lines 103a, 103b, 103c, 103d for enabling prioritization of supply of transmission configuration and electric motor.
    According to one embodiment, the connection unit 100 includes overflow valves (not shown) which are arranged to open based on predetermined pressure. In this case, prioritization of pre-cleaning is arranged so that transmission configurations, according to a variant on each side of the electric motor arranged planetary shafts, as well as differential configuration, are first provided with coolant and lubricant via one of the first supply line 103a, 103a, 103b, 103c, 103d. and then the stator winding harnesses of the electric motor are supplied with coolant and lubricant via a second supply line 103b, then a third supply line is activated 103c to supply the rotor of the electric motor with coolant and lubricant, and then the electric motor jacket is provided with coolant and lubrication rings. This is the case, for example, if the performance of the pump unit P is impaired, whereby the passability of the vehicle is compromised in that the risk of transmission configurations failing is avoided.
    According to a variant, consequently cooled oil is intended to be led with high pressure in the inlet line 103 into the connection unit 100, branch supply lines 103a, 103b, 103c, 103d are branched in the set with priority for example as above. Oil heated by the electric motor and transmission configuration is then pumped up from the oil sump to the bottom of the housing and led via the connection unit 100 and via the pump unit P through the filter F and via the heat exchanger HX to cool the oil and then again through the inlet line for supplying the transmission configuration and electric motor.
    The system S further comprises power electronics E arranged to electrically supply power to the electric motor. Said power electronics E are connected to the electric motor via wiring 105 in the form of a three-phase line, which wiring is connected to the electric motor via the connection unit 100.
    According to one embodiment, the system also comprises an electronic control unit ECU. The electronic control unit ECU is arranged to receive signals from a signal line configuration 107 via the connection unit 100. The electronic control unit is arranged to receive signals from sensor means (not shown) arranged in connection with an electric drive unit of an electric drive device according to the present invention, said sensor means determination of flow rate of coolant and lubricant, level sensor for determining coolant level at sump, pressure sensor for determining pressure of coolant and lubricant, temperature sensor for determining temperature of electric motor, temperature sensor for determining temperature of coolant and lubricant such as oil, position sensor such as resolver / encoder to determine the position of the rotor of the electric motor, rotation sensor to determine the rotational speed of the rotor, particle feed sensor to determine the particle amount of coolant and lubricant as oil to see if the coolant has become particle bearing which may indicate notation of, among other things, gears, wherein the electronic control unit ECU is arranged to receive signals from said sensor means representing river data, level data, pressure data and temperature data. The electronic control unit ECU is further connected to said power electronics E. The electronic control unit ECU is arranged to send signal to the power electronics representing control of electric motor based on information from sensor means concerning for example the rotor position and the electric motor temperature 16 In Fig. 6a the branch line 103 of a branch configuration Y1 in the connection unit 100. The branching of the inlet line 103 can take place through any suitable branch configuration. Fig. in a respective two supply lines 103a ', 103b', and 103c ', 103d'.
    Fig. 7a schematically shows an axial cross-sectional view of an electric drive device, in which the electric drive device I illustrated in Figs. 1-5 according to a variant is designed in accordance with the electric drive device I in Fig. 7a. Fig. 7b illustrates a top view of a differential device 40 of the electric drive device I in Fig. 7a.
    The electric drive device I comprises a pendulum suspension (not shown in Fig. 7a) in accordance with the pendulum suspension in Figs. 1-5. The electric drive device I is consequently intended to be suspended from the pendulum. Accordingly, the electric drive device I comprises an electric motor 20 and a housing 30 in which the electric motor 20 is housed. The electric drive device I is arranged to propel a motor vehicle. The housing 30 has a circumferential surface 31 and a substantially annular cross-section, said housing having the horizontal direction 31 of the circumferential surface 31 and said drive shaft 26 being arranged to run substantially transversely to the longitudinal direction of said vehicle.
    The electric motor 20 comprises a rotor 22 and a stator 24, wherein said rotor 22 is connected to a drive shaft 26 or rotor shaft 26 and is arranged to rotate said drive shaft 26. The housing 30 has a circumferential surface 31 and a substantially annular cross-section, said housing having a horizontal surface 31 direction and said drive shaft 26 are arranged to travel substantially transverse to the longitudinal direction of said vehicle. The drive shaft 26 is arranged to run concentrically relative to the rotor 22, the rotor 22 being arranged to open the drive shaft 26. The stator 24 is arranged to open the rotor 22, the rotor shaft and consequently the rotor 22 being arranged concentrically relative to the stator 24. The drive shaft 26 is arranged to run essentially horizontal. The drive shaft 26 is intended to be connected to and drive ground contacting means such as drive wheels or drive belts. The electric drive device I is consequently arranged to drive ground contacting means such as drive wheels or drive belts for propelling the motor vehicle.
    Accordingly, according to this embodiment, the drive shaft 26 runs concentrically relative to the tanked center shaft of the electric motor 20. In this case, a desired space 36 is formed between the electric motor and the said housing. The desired space 36 has a valley-like configuration.
    The housing 30 has a substantially annular cross-section with a tanked central axis X. According to this embodiment, the housing 30 has a substantially circular cross-section.
    The electric motor 20 is eccentrically offset arranged in the housing 30 so that the drive shaft 26 of the electric motor 20 runs parallel to and at a distance from the center axis X of the housing 30 to form said desired space 36. The housing 30 is consequently intended to be arranged substantially horizontally so that it refuel the center axis X runs essentially horizontally.
    According to this embodiment, the electric motor 20 is displaced substantially radially upwards in the substantially circular-cylindrical housing 30. The housing 30 forms a central part of a load-bearing structure in the electric drive device I. According to a variant, the drive shaft 26 / tank center shaft 26 is offset relative to the housing 30 center axis 20-100 mm, according to a variant around 45 mm.
    Said displacement may be within any suitable range, including larger intervals than those mentioned above. The desired space consequently runs axially in the lower area of the housing 30.
    The centimeters gained by the eccentric position of the electric motor 20 relative to the drive shaft 26 below the electric motor 20 are used to place 18 differential shaft configurations 42a, 42b of the differential device 40 and oil sump 0. It is further omitted to remove the cable from the housing 30 in a neat manner. which is illustrated, inter alia, in Figs. 3 and 4 and is explained in more detail below.
    The electric drive device I comprises an output shaft 12 connected to the drive shaft 26. According to this embodiment, the output shaft 12 is aligned with the drive shaft 26. According to this embodiment, the output shaft 12 extends through said drive shaft 26.
    According to this embodiment, the electric drive device I comprises a differential part arranged in the housing 30. Said differential means comprises a first transmission configuration 50 in the form of a first planetary gear configuration 50 and a second transmission configuration 60 in the form of a second planetary gear configuration 60, the electric motor 20 being arranged between said first and second planetary gear configurations 50, 60.
    The first planetary gear configuration 50 includes planet gears 52, a sun gear 54, and a ring gear 56. The second planetary gear configuration 60 includes planet gears 62, a sun gear 64, and a ring gear 66.
    The first and second planetary gear configurations 50, 60 are drivably connected to each other via said output shaft 12. The output shaft 12 is connected to the sun gear 54, 64 of the respective planetary gear configurations 50, 60.
    The differential means comprises the differential device 40 engaged with the ring gear 56 of the first planetary gear configuration 50 and the ring gear 66 of the second planetary gear configuration 60 to provide differential function of a motor vehicle.
    The differential device 40 comprises a shaft configuration 42a, 42b which is arranged in the housing 30 between the electric motor and the housing wall of the housing 30 in the space 36 19 which is released by said displacement of the central axis 26 of the electric motor 20 relative to the central axis X of the housing 30.
    As shown in Fig. 7b, the shaft configuration includes a first differential shaft 42a and a second differential shaft 42b which run substantially parallel to each other in the axial longitudinal extension of the housing in the space 36.
    The differential device comprises differential gears 44a, 44b, 46a, 46b, the gear 44a on the first differential shaft 42a being in gear engagement with the ring gear 56 and the gear 44b on the first differential shaft 42b being in gear engagement with the ring gear 66.
    The differential device 40 is arranged to shift up the output shaft 5 on one side at the same time as the other side is shifted down, which is achieved by allowing the ring wheels 56, 66 by means of the gears 46a, 46b to rotate opposite each other.
    The electric drive device 10 electric motor 20 is axially aligned with the output shaft 5 and the shaft configuration 42 of the differential device 40 is arranged to extend along the circumferential surface of the electric motor 20 in the space 36 of the housing 30 provided by the displacement of the central shaft of the electric motor 20 relative to the central shaft 30.
    By using a cylindrical housing 30 with a circular cross-section, a bust-white housing 30 is obtained which is simple and inexpensive to manufacture. According to one embodiment, construction elements for the housing 30 consist of a tube with a circular cross-section which is optimal for load-bearing. By arranging the electric motor 20 eccentrically in such a horizontally arranged housing 30, volume is utilized at the top of the housing 30, i.e. the electric motor is arranged so that its upper mantle surface runs axially along the inner upper surface of the housing 30, at the same time as the shaft configuration of the differential device is arranged below the electric motor in the space 36 which is released, i.e. the shaft configuration is arranged so that it runs axially in the space 36 along the inner lower surface of the housing 30, whereby a compact construction is obtained, at the same time as a circular-cylindrical tube is used with the above-mentioned advantages.
    Accordingly, according to this embodiment, the electric motor 20 is placed eccentrically in the circular-cylindrical horizontal housing 30 arranged in a vehicle, i.e. the center of rotation of the drive shaft 26 is radially offset relative to the tank center axis X of the circular cylindrical housing 30, accommodating the shaft configuration 42a, 42b of the differential device 40 in the housing 30 in the axially extending space 36 below the electric motor 20. The volume available when the electric motor 20 is displaced is utilized. as oil sump 0 and gives, as mentioned, space to the shaft configuration 42a, 42b of the differential device 40 true in the demand of a differential source / torque vectoring (not shown).
    Furthermore, the freed space 36 makes it possible to collect connections for lubricating part, coolant, power supply and sensors, etc. and connect these to the connection unit according to the present invention.
    Through an output shaft extending through said drive shaft, a motor-in-shaft solution with output shaft 5 is obtained via planetary shaft configuration 50, 60 on each side of the electric motor 20. A motor-in-shaft solution requires no cardan shafts but all power transmission takes place via cable .
    The electric drive device I according to the present invention is intended primarily for medium and heavy special vehicles. In this case, the electric motor 20 is placed horizontally in the vehicle, the jacket 21 of the electric motor 20 and the jacket 31 of the housing running in the width direction of the vehicle. The electric motor 20 is furthermore eccentrically placed in relation to the circular-cylindrical housing 30 arranged horizontally in the vehicle, at the same time maintaining coaxiality between the drive shaft and the output shaft and consequently the drive wheels.
    Above, embodiments of the electric drive device I have been shown and described where the housing has a substantially circular-cylindrical cross-section. The housing of the electric drive device I can have any suitable annular cross-section. According to an alternative embodiment, the housing has a substantially elliptical cross-section. According to an alternative embodiment, the housing has a substantially agg-shaped cross-section. According to an alternative embodiment, the housing has a substantially elongated cross-section with parallel sides and semicircular spirits. 21 Above, electric drive device In which the electric motor is eccentrically located in the housing has been described. According to an alternative embodiment, the electric drive device in a housing has a substantially circular cross-section with a center axis, the electric motor being concentrically arranged in the housing in such a way that the drive shaft / center shaft has the electric motor aligned with the center axis of the housing.
    Fig. 1 shows an electric drive device in which the pendulum mounting has the pendulum suspension and the connecting unit connected to said pendulum mounting within the inner bearing part of said sliding bearing is arranged so that the pivot axis of rotation of the pendulum suspension runs in the horizontal direction of the housing. This results in a stable and balanced pendulum suspension of the electric drive device I.
    Figs. 3 and 4 show an electric drive device in which the pendulum mounting has the pendulum suspension and the connection unit connected to said pendulum mounting within the inner bearing part of said sliding bearing is arranged so that the pivot axis of rotation of the pendulum suspension runs in a lower area between the horizontal horizontal plane and axial direction of the housing. In doing so, it is omitted to lead wiring from the electric motor and cooling and lubrication lines out of the house.
    The said inner bearing part has the front and rear sliding bearings can be fastened to the mantle surface of the housing on whichever heater is suitably mounted by means of which son is called a suitable fastening element such as screw joints, rivet joints or the like. Said inner bearing part has front and rear sliding bearings are according to a variant fixed directly to the mantle surface 31 of the housing 30. Said inner bearing part has front and rear sliding bearings are according to a variant fixed around a hash housing 30 from the mantle surface 31 of the housing substantially perpendicularly and horizontally projecting annular portion. According to a variant, said connecting unit is connected internally to such a hollow annular projecting portion. According to a variant, said bearing configuration comprises only one of the front and rear plain bearings, according to a variant only the front plain bearing. Accordingly, according to a variant (not shown), the pendulum suspension comprises only one sliding bearing, where the sliding bearing according to a variant constitutes a front sliding bearing.
    The above description of the preferred embodiments of the present invention has been provided for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the invention to the variations described. Obviously, many modifications and variations will occur to those skilled in the art. The embodiments have been selected and described in order to best explain the principles of the invention and its practical applications, thereby enabling one skilled in the art to understand the invention for various embodiments and with the various modifications which are appropriate to the intended use. 23
    权利要求:
    Claims (16)
    [1]
    Electric drive device For driving a motor vehicle (1) comprising an electric motor (20), a drive shaft (26) driven by the electric motor (20), a housing (30) in which the electric motor (20) is housed, which housing (30 ) has a mantle surface (31) and a substantially annular cross-section, the horizontal direction of said housing mantle surface (31) and said drive shaft (26) being arranged to run substantially transversely to the longitudinal direction of said vehicle (1), marked by a pendulum suspension (70). ) for suspending the electric drive device I, wherein the pendulum suspension (70) comprises a fixed configuration (72) connected to the vehicle and at least one fixed connection to the housing surface (31) and relatively said fixed configuration (72) by means of a bearing configuration (80, 82). rotatably mounted pendulum mounting (74, 76).
    [2]
    Electric drive device I according to claim 1, wherein the electric motor (20) has a stator (24) and a rotor (22) arranged to rotate the drive shaft (26).
    [3]
    Electric drive device I according to claim 1 or 2, wherein said drive shaft (26) is arranged for driving two output shafts (5) for driving ground contacting means (7a, 7b), preferably via suitable transmission configurations (50, 60) and wherein said output shafts (5) are arranged to run substantially transversely to the longitudinal direction of said vehicle (1).
    [4]
    A driveline according to any one of claims 1-3, wherein said fixed configuration (72) is arranged for suspending a front and a rear pendulum mount (74, 76).
    [5]
    Electric drive device I according to any one of claims 1-4, wherein said bearing configuration (80, 82) comprises sliding bearings (80, 82).
    [6]
    The electric drive device I according to claim 5, wherein said plain bearing (80, 82) comprises an outer 24 bearing part (80a, 82a) fixedly connected to said fixed configuration (72) and a fixedly connected and internally connected to said pendulum mounting (74, 76) and relative to said outer bearing member (80a, 82a) slidable inner bearing member (80b, 82b).
    [7]
    Electric drive device I according to any one of claims 1-6, wherein said pendulum mounting (74, 76) is connected to a connection unit (100) arranged at the sheath surface (31) of said housing (30) for media supply of the electric notch (20), wherein said media supply is intended to take place via an opening in the mantle surface of said house (31).
    [8]
    The electric drive device I according to claim 7, wherein said connection unit (100) is connected to said pendulum mounting (74) within the inner bearing part (80b) of said plain bearing (80).
    [9]
    Electric drive device I according to any one of claims 1-8, wherein said pendulum mounting (74, 76) is arranged between said housing (30), the upper and lower part (30a, 30b) of the jacket surface (31).
    [10]
    Electric drive device I according to any one of claims 1-9, wherein said pendulum mounting (74, 76) in axial direction is arranged substantially adjacent to a central portion of said housing (30) mantle surface (31).
    [11]
    Electric drive device I according to any one of claims 1-10, wherein said pendulum mounting (74, 76) in circumferential direction of the housing surface (31) of the housing (30) is located adjacent to a horizontal center plane of the housing surface (31) of the housing (30).
    [12]
    Electric drive device I according to any one of claims 1-6, wherein said media supply includes power supply by means of power electronics and / or coolant and lubricant supply.
    [13]
    Electric drive device I according to any one of claims 1-12, wherein an oil sump (0) is arranged at the bottom of the housing (30) in a lower portion (21) of the electric motor (20) between the electric motor (20) and said housing below the housing surface (21). 21b) trained desired space (36) for the aforesaid cooling and cooling supply.
    [14]
    Electric drive device I according to any one of claims 13, wherein the electric motor (20) is arranged eccentrically in the housing (30) in such a way that the center of rotation of the drive shaft (26) of the electric motor (20) runs substantially parallel to and at a distance from a tank center shaft. (X) of the housing (30) to form said desired space (36).
    [15]
    Electric drive device I according to claim 13 or 14, further comprising a differential device (40) below a shaft configuration (42a, 42b) arranged in the housing (30) in the desired space (36) between electric motor (20) and housing (30).
    [16]
    Motor vehicle (1) comprising an electric drive device I () according to any one of claims 1-15. 1 / I
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    同族专利:
    公开号 | 公开日
    SE537132C2|2015-02-10|
    EP3003760A4|2017-02-15|
    US9969252B2|2018-05-15|
    EP3003760B1|2017-12-13|
    WO2014193297A1|2014-12-04|
    EP3003760A1|2016-04-13|
    US20160137044A1|2016-05-19|
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    法律状态:
    2020-05-12| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350658A|SE537132C2|2013-05-30|2013-05-30|Electric drive for driving a motor vehicle|SE1350658A| SE537132C2|2013-05-30|2013-05-30|Electric drive for driving a motor vehicle|
    EP14804012.4A| EP3003760B1|2013-05-30|2014-05-27|Electric drive device for driving a motor vehicle|
    US14/894,261| US9969252B2|2013-05-30|2014-05-27|Electric drive device for driving a motor vehicle|
    PCT/SE2014/050646| WO2014193297A1|2013-05-30|2014-05-27|Electric drive device for driving a motor vehicle|
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