Electric drive assembly and vehicle

Abstract

The electric drive assembly comprises a left electric drive unit, a right electric drive unit and a motor controller, the left electric drive unit comprises a left motor and a left speed reducer, and the left speed reducer comprises a left synchronizer, a left first-gear gear set and a left second-gear gear set. The left electric drive unit comprises a left motor and a left speed reducer, the left synchronizer is selectively connected with a left first-gear gear set or a left second-gear gear set, the right electric drive unit comprises a right motor and a right speed reducer, the right speed reducer comprises a right synchronizer, a right first-gear gear set and a right second-gear gear set, and the right synchronizer is selectively connected with the right first-gear gear set or the right second-gear gear set. An installation space used for installing the motor controller is defined between the left electric drive unit and the right electric drive unit, and the motor controller is electrically connected with the left motor and the right motor. According to the electric drive assembly, the dynamic property and economical efficiency of a vehicle can be improved, meanwhile, the overall structure of the electric drive assembly is compact, and space can be effectively utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an electric drive assembly and a vehicle. Background Art

[0002] In the related art, in order to match the optimal efficiency range of the motor of the vehicle with the working condition of the vehicle, the electric drive assembly of the vehicle can be provided with two electric drive units to drive the left and right wheels of the vehicle respectively. However, the electric drive unit is usually provided with only one gear, resulting in low flexibility of the electric drive assembly and failure to meet different requirements for the transmission ratio of the electric drive assembly under different working conditions. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose an electric drive assembly, which includes a left electric drive unit and a right electric drive unit, the left electric drive unit and the right electric drive unit can respectively control the left wheel and the right wheel of the vehicle, which can improve the controllability and safety performance of the vehicle, and the left electric drive unit has a left first gear gear set and a left second gear gear set, and the right electric drive unit has a right first gear gear set and a right second gear gear set, so that the electric drive assembly has multiple gears, which can meet the different requirements of the transmission ratio of the electric drive assembly under different driving conditions, so that the electric drive assembly has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor and the right motor, so as to reduce costs, improve high-speed efficiency, reduce noise and improve the reliability of the vehicle. In addition, an installation space for installing a motor controller is defined between the left electric drive unit and the right electric drive unit, so that the overall structure of the electric drive assembly is relatively compact and can effectively utilize space.

[0004] The utility model also provides a vehicle having the electric drive assembly.

[0005] The electric drive assembly according to the first embodiment of the utility model includes: a left electric drive unit, including a left motor and a left reducer, the left reducer is suitable for being drivably connected between the left motor and the left wheel, the left reducer includes a left synchronizer, a left first gear gear set and a left second gear gear set, the left synchronizer is connected to the output shaft of the left motor, the left synchronizer is connected to one of the left first gear gear set and the left second gear gear set, or the left synchronizer is not connected to both the left first gear gear set and the left second gear gear set, and the left first gear gear set and the left second gear gear set are both drivably connected to the left wheel; a right electric drive unit, including a right motor and a right reducer, the right reducer The device is suitable for being drivably connected between the right motor and the right wheel, the right reducer includes a right synchronizer, a right first-gear gear set and a right second-gear gear set, the right synchronizer is connected to the output shaft of the right motor, the right synchronizer is connected to one of the right first-gear gear set and the right second-gear gear set, or the right synchronizer is not connected to both the right first-gear gear set and the right second-gear gear set, and the right first-gear gear set and the right second-gear gear set are both drivably connected to the right wheel; a motor controller, an installation space for installing the motor controller is defined between the left electric drive unit and the right electric drive unit, and the motor controller is electrically connected to the left motor and the right motor.

[0006] According to the electric drive assembly of the embodiment of the utility model, the electric drive assembly includes a left electric drive unit and a right electric drive unit, and the left electric drive unit and the right electric drive unit can respectively control the left wheel and the right wheel of the vehicle, which can improve the controllability and safety performance of the vehicle, and the left electric drive unit has a left first gear gear set and a left second gear gear set, and the right electric drive unit has a right first gear gear set and a right second gear gear set, so that the electric drive assembly has multiple gears, which can meet the different requirements of the transmission ratio of the electric drive assembly under different driving conditions, so that the electric drive assembly has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor and the right motor, so as to reduce costs, improve high-speed efficiency, reduce noise and improve the reliability of the vehicle. In addition, an installation space for installing a motor controller is defined between the left electric drive unit and the right electric drive unit, so that the overall structure of the electric drive assembly is relatively compact and can effectively utilize space.

[0007] According to some embodiments of the present utility model, the left synchronizer includes a left input shaft, the output shaft of the left motor is connected to the left input shaft, the left first gear gear set includes a first left gear and a second left gear meshing with each other, the left second gear gear set includes a third left gear and a fourth left gear meshing with each other, the first left gear and the third left gear are both loosely sleeved on the left input shaft and are located on both axial sides of the left synchronizer, the left synchronizer can be selectively connected to the first left gear or the third left gear, the left reducer also includes a left intermediate shaft, the second left gear and the fourth left gear are both fixed to the left intermediate shaft and are coaxially arranged, the left intermediate shaft is connected to the left vehicle The right synchronizer comprises a right input shaft, the output shaft of the right motor is connected to the right input shaft, the right first gear gear set comprises a first right gear and a second right gear meshing with each other, the right second gear gear set comprises a third right gear and a fourth right gear meshing with each other, the first right gear and the third right gear are both loosely mounted on the right input shaft and are located on both axial sides of the right synchronizer, the right synchronizer can be selectively connected to the first right gear or the third right gear, the right reducer also comprises a right intermediate shaft, the second right gear and the fourth right gear are both fixed to the right intermediate shaft and are coaxially arranged, and the right intermediate shaft is driveably connected to the right wheel.

[0008] According to some embodiments of the present utility model, the output shaft of the left motor is spline-connected to the left input shaft; the output shaft of the right motor is spline-connected to the right input shaft.

[0009] According to some embodiments of the present invention, the left reducer also includes a left output gear group and a left output shaft, the left output gear group includes a fifth left gear and a sixth left gear that are meshed with each other, the fifth left gear is fixed to the left intermediate shaft and is coaxially arranged with the second left gear and the fourth left gear, the sixth left gear is fixed to the left output shaft, and the left output shaft is transmission-connected to the left wheel; the right reducer also includes a right output gear group and a right output shaft, the right output gear group includes a fifth right gear and a sixth right gear that are meshed with each other, the fifth right gear is fixed to the right intermediate shaft and is coaxially arranged with the second right gear and the fourth right gear, the sixth right gear is fixed to the right output shaft, and the right output shaft is transmission-connected to the right wheel.

[0010] According to some embodiments of the present utility model, the first left gear is located on a side of the left synchronizer adjacent to the left motor, the fifth left gear is located on a side of the second left gear away from the fourth left gear, or the fifth left gear is located between the second left gear and the fourth left gear, or the fifth left gear is located on a side of the fourth left gear away from the second left gear; the first right gear is located on a side of the right synchronizer adjacent to the right motor, the fifth right gear is located on a side of the second right gear away from the fourth right gear, or the fifth right gear is located between the second right gear and the fourth right gear, or the fifth right gear is located on a side of the fourth right gear away from the second right gear.

[0011] According to some embodiments of the present invention, the housing of the left motor is a left motor housing, the housing of the right motor is a right motor housing, and the motor controller is fixed to the outer wall of the left motor housing and the outer wall of the right motor housing.

[0012] According to some embodiments of the present invention, the housing of the motor controller is a controller housing, and the left motor housing, the right motor housing and the controller housing are all independently molded parts.

[0013] According to some embodiments of the present invention, the motor controller is detachably fixed to the outer wall of the left motor housing and the outer wall of the right motor housing.

[0014] According to some embodiments of the utility model, the housing of the left motor is a left motor housing, the housing of the right motor is a right motor housing, the housing of the motor controller is a controller housing, and the left motor housing, the right motor housing and the controller housing are integrally formed.

[0015] According to some embodiments of the utility model, the left motor housing, the right motor housing and the controller housing are integrally formed as a motor electronic control housing, the housing of the left reducer is a left reducer housing, the housing of the right reducer is a right reducer housing, the left reducer housing and the right reducer housing are respectively connected to the left and right sides of the motor electronic control housing, the motor electronic control housing, the left reducer housing and the right reducer housing together enclose a U-shaped space, and the control module of the motor controller is located in the U-shaped space.

[0016] A vehicle according to an embodiment of the second aspect of the utility model includes: an electric drive assembly according to an embodiment of the first aspect of the utility model.

[0017] According to the vehicle of the embodiment of the utility model, the drive assembly of the vehicle includes a left electric drive unit and a right electric drive unit, and the electric drive assembly includes a left electric drive unit and a right electric drive unit, and the left electric drive unit and the right electric drive unit can respectively control the left wheel and the right wheel of the vehicle, which can improve the controllability and safety performance of the vehicle, and the left electric drive unit has a left first gear gear set and a left second gear gear set, and the right electric drive unit has a right first gear gear set and a right second gear gear set, so that the electric drive assembly has multiple gears, which can meet the different requirements of the transmission ratio of the electric drive assembly under different driving conditions, so that the electric drive assembly has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor and the right motor, so as to reduce costs, improve high-speed efficiency, reduce noise and improve the reliability of the vehicle. In addition, an installation space for installing a motor controller is defined between the left electric drive unit and the right electric drive unit, so that the overall structure of the electric drive assembly is relatively compact and can effectively utilize space.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a simplified diagram of an electric drive assembly according to some embodiments of the utility model;

[0021] Figure 2 is a simplified diagram of an electric drive assembly according to other embodiments of the utility model;

[0022] Figure 3 It is a simplified diagram of an electric drive assembly according to some other embodiments of the utility model.

[0023] Reference numerals:

[0024] 100. Electric drive assembly;

[0025] 10. Left electric drive unit; 11. Left motor; 12. Left reducer; 13. Left synchronizer; 14. Left input shaft; 15. Left first gear set; 151. First left gear; 152. Second left gear; 16. Left second gear set; 161. Third left gear; 162. Fourth left gear; 17. Fifth left gear; 18. Sixth left gear; 19. Left intermediate shaft; 191. Left output shaft;

[0026] 20. Right electric drive unit; 21. Right motor; 22. Right reducer; 23. Right synchronizer; 24. Right input shaft; 25. Right first gear set; 251. First right gear; 252. Second right gear; 26. Right second gear set; 261. Third right gear; 262. Fourth right gear; 27. Fifth right gear; 28. Sixth right gear; 29. ​​Right intermediate shaft; 291. Right output shaft;

[0027] 30. Installation space; 31. Motor controller. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The electric drive assembly 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] Reference Figure 1-Figure 3 According to the electric drive assembly 100 of the first aspect of the utility model, the electric drive assembly 100 includes a left electric drive unit 10 and a right electric drive unit 20. The left electric drive unit 10 includes a left motor 11 and a left reducer 12. The left reducer 12 is suitable for being drivably connected between the left motor 11 and the left wheel. The left reducer 12 includes a left synchronizer 13, a left first gear gear set 15 and a left second gear gear set 16. The left synchronizer 13 is connected to the output shaft of the left motor 11. The left synchronizer 13 is connected to one of the left first gear gear set 15 and the left second gear gear set 16, or the left synchronizer 13 is not connected to both the left first gear gear set 15 and the left second gear gear set 16. The left first gear gear set 15 and the left second gear gear set 16 are both drivably connected to the left wheel.

[0031] The connection between the left synchronizer 13 and one of the left first gear gear set 15 and the left second gear gear set 16 means that the left synchronizer 13 can be connected to the left first gear gear set 15, or the left synchronizer 13 can be connected to the left second gear gear set 16. By selectively connecting the left first gear gear set 15 or the left second gear gear set 16 through the left synchronizer 13, two different transmission ratios can be provided for the left electric drive unit 10, thereby driving the left wheel to move, meeting the vehicle's demand for different transmission ratios under different driving conditions. For example, the vehicle requires a larger acceleration during the acceleration phase of the driving process, and the left electric drive unit 10 requires a larger transmission ratio to increase the torque of the left wheel; in order to achieve a higher maximum speed, the vehicle needs to increase the speed of the left wheel, so that the left electric drive unit 10 needs to provide a smaller transmission ratio. The left first gear gear set 15 and the left second gear gear set 16 can provide two transmission ratios respectively. For example, when the left synchronizer 13 is connected to the left first gear gear set 15 and provides a larger transmission ratio for the left wheel, the left wheel will obtain a greater acceleration. When the left synchronizer 13 is connected to the left second gear gear set 16 and provides a smaller transmission ratio for the left wheel, the left wheel will have a higher maximum speed. Therefore, different requirements for the transmission ratio of the electric drive assembly 100 under different driving conditions can be met, so that the left motor 11 can work efficiently under different driving conditions, which can improve the flexibility of the electric drive assembly 100. The two-speed drive can also provide greater wheel-end torque and maximum speed, thereby improving the flexibility and power of the vehicle.

[0032] When the left synchronizer 13 is not connected to the left first gear gear set 15 and the left second gear gear set 16, the left synchronizer 13 is in the middle gear position, at which time there is no power transmission, which can reduce the drag loss.

[0033] The right electric drive unit 20 includes a right motor 21 and a right reducer 22. The right reducer 22 is suitable for being drivably connected between the right motor 21 and the right wheel. The right reducer 22 includes a right synchronizer 23, a right first gear gear set 25 and a right second gear gear set 26. The right synchronizer 23 is connected to the output shaft of the right motor 21. The right synchronizer 23 can be selectively connected to the right first gear gear set 25 or the right second gear gear set 26. The right first gear gear set 25 and the right second gear gear set 26 are both drivably connected to the right wheel.

[0034] The connection between the right synchronizer 23 and one of the right first gear gear set 25 and the right second gear gear set 26 means that the right synchronizer 23 is connected to the right first gear gear set 25, or the right synchronizer 23 is connected to the right second gear gear set 26. By selectively connecting the right first gear gear set 25 or the right second gear gear set 26 through the right synchronizer 23, two different transmission ratios can be provided for the right electric drive unit 20, thereby driving the right wheel to move, meeting the vehicle's demand for different transmission ratios under different driving conditions. For example, the vehicle requires a larger acceleration during the acceleration phase of the driving process, and the right electric drive unit 20 requires a larger transmission ratio to increase the torque of the right wheel; in order to achieve a higher maximum speed, the vehicle needs to increase the speed of the right wheel, so that the right electric drive unit 20 needs to provide a smaller transmission ratio. The right first gear gear set 25 and the right second gear gear set 26 can provide two transmission ratios respectively. For example, when the right synchronizer 23 is connected to the right first gear gear set 25 and provides a larger transmission ratio for the right wheel, the right wheel will obtain a greater acceleration. When the right synchronizer 23 is connected to the right second gear gear set 26 and provides a smaller transmission ratio for the right wheel, the right wheel will have a higher maximum speed. Therefore, different requirements for the transmission ratio of the electric drive assembly 100 under different driving conditions can be met, so that the right motor 21 can work efficiently under different driving conditions, which can improve the flexibility of the electric drive assembly 100. The two-speed drive can also provide greater wheel-end torque and maximum speed, thereby improving the flexibility and power of the vehicle.

[0035] When the right synchronizer 23 is not connected to the right first gear set 25 and the right second gear set 26, the right synchronizer 23 is in the middle gear position, at which time there is no power transmission, which can reduce the drag loss.

[0036] The electric drive assembly 100 includes a left electric drive unit 10 and a right electric drive unit 20. The left electric drive unit 10 and the right electric drive unit 20 can control the left wheel and the right wheel of the vehicle respectively, which can improve the vehicle's maneuverability and safety performance. The left electric drive unit 10 has a left first gear gear set 15 and a left second gear gear set 16, and the right electric drive unit 20 has a right first gear gear set 25 and a right second gear gear set 26, so that the electric drive assembly 100 has multiple gears, which can meet different requirements for the transmission ratio of the electric drive assembly 100 under different driving conditions, so that the electric drive assembly 100 has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor 11 and the right motor 21, thereby reducing costs, improving high-speed efficiency, reducing noise and improving vehicle reliability. For example, the left synchronizer 13 can be connected to the left first gear gear, and the right synchronizer 23 is connected to the right first gear gear; or the left synchronizer 13 is connected to the left second gear gear, and the right synchronizer 23 is connected to the right first gear gear; or the left synchronizer 13 is connected to the left first gear gear, and the right synchronizer 23 is connected to the right second gear gear; or the left synchronizer 13 is connected to the left second gear gear, and the right synchronizer 23 is connected to the right second gear gear, so that the electric drive assembly 100 has high flexibility and can select different gears according to different driving conditions to drive the left wheel and the right vehicle respectively, thereby improving the power and economy of the vehicle, and at the same time, it can also reduce the turning radius of the vehicle.

[0037] It should be noted that the “plurality” in the present invention refers to two or more than two.

[0038] The electric drive assembly 100 further includes a motor controller 31. An installation space 30 for installing the motor controller 31 is defined between the left electric drive unit 10 and the right electric drive unit 20. The motor controller 31 is electrically connected to both the left motor 11 and the right motor 21. This makes the overall structure of the electric drive assembly 100 relatively compact and can effectively utilize space.

[0039] According to the electric drive assembly 100 of the embodiment of the utility model, the electric drive assembly 100 includes a left electric drive unit 10 and a right electric drive unit 20. The left electric drive unit 10 and the right electric drive unit 20 can respectively control the left wheel and the right wheel of the vehicle, which can improve the controllability and safety performance of the vehicle. The left electric drive unit 10 has a left first gear gear set 15 and a left second gear gear set 16, and the right electric drive unit 20 has a right first gear gear set 25 and a right second gear gear set 26, so that the electric drive assembly 100 has multiple gears, which can meet different requirements for the transmission ratio of the electric drive assembly 100 under different driving conditions, so that the electric drive assembly 100 has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor 11 and the right motor 21, thereby reducing costs, improving high-speed efficiency, reducing noise and improving the reliability of the vehicle. In addition, an installation space 30 for installing a motor controller 31 is defined between the left electric drive unit 10 and the right electric drive unit 20, so that the overall structure of the electric drive assembly 100 is relatively compact and space can be effectively utilized.

[0040] Reference Figure 1-Figure 3 According to some embodiments of the present utility model, the left synchronizer 13 includes a left input shaft 14, the output shaft of the left motor 11 is connected to the left input shaft 14, the left first gear gear set 15 includes a first left gear 151 and a second left gear 152 that are meshed with each other, the left second gear gear set 16 includes a third left gear 161 and a fourth left gear 162 that are meshed with each other, the first left gear 151 and the third left gear 161 are both loosely sleeved on the left input shaft 14 and are located on both axial sides of the left synchronizer 13, for example, the first left gear 151 and the third left gear 161 can be connected to the left input shaft 14 through a needle bearing or a sliding bearing, not through a key connection, the first left gear 151 and the third left gear 161 do not rotate with the left input shaft 14, and the left input shaft 14 only supports the first left gear 151 and the third left gear 161, and there is no transmission connection. The left synchronizer 13 can be selectively connected to the first left gear 151 or the third left gear 161. The left reducer 12 also includes a left intermediate shaft 19. The second left gear 152 and the fourth left gear 162 are both fixed to the left intermediate shaft 19 and are coaxially arranged. The left intermediate shaft 19 is transmission-connected to the left wheel.

[0041] In the left first gear gear set 15, the first left gear 151 is the driving wheel, and the second left gear 152 is the driven wheel; in the left second gear gear set 16, the third left gear 161 is the driving wheel, and the fourth left gear 162 is the driven wheel. The transmission ratio of the left first gear gear set 15 and the left second gear gear set 16 can be calculated based on the number of teeth of the driving wheel and the driven wheel. The transmission ratio of the left first gear gear set 15 is the number of teeth of the second left gear 152 / the number of teeth of the first left gear 151. For example, when the number of teeth of the second left gear 152 is more than that of the first left gear 151, the left synchronizer 13 is connected to the first left gear 151, and the left first gear gear set 15 will provide a larger transmission ratio. In this case, the torque output of the left wheel is high, which is suitable for situations where the vehicle needs to accelerate; the transmission ratio of the left second gear gear set 16 is the number of teeth of the fourth left gear 162 / the number of teeth of the third left gear 161. When the number of teeth of the fourth left gear 162 is less than that of the third left gear 161, the left synchronizer 13 is connected to the third left gear 161, and the left second gear gear set 16 will provide a smaller transmission ratio. In this case, the speed output of the left wheel is high, which is suitable for situations where the vehicle needs to travel at high speed.

[0042] The right synchronizer 23 includes a right input shaft 24, the output shaft of the right motor 21 is connected to the right input shaft 24, the right first gear gear set 25 includes a first right gear 251 and a second right gear 252 that are meshed with each other, the right second gear gear set 26 includes a third right gear 261 and a fourth right gear 262 that are meshed with each other, the first right gear 251 and the third right gear 261 are both empty sleeves on the right input shaft 24 and are located on both axial sides of the right synchronizer 23, for example, the first right gear 251 and the third right gear 261 can be connected to the right input shaft 24 by a needle bearing or a sliding bearing, not by a key connection, the first right gear 251 and the third right gear 261 do not rotate with the right input shaft 24, and the right input shaft 24 only supports the first right gear 251 and the third right gear 261, and there is no transmission connection. The right synchronizer 23 can be selectively connected to the first right gear 251 or the third right gear 261. The right reducer 22 also includes a right intermediate shaft 29. The second right gear 252 and the fourth right gear 262 are both fixed to the right intermediate shaft 29 and are coaxially arranged. The right intermediate shaft 29 is transmission-connected to the right wheel.

[0043] In the right first gear gear set 25, the first right gear 251 is the driving wheel, and the second right gear 252 is the driven wheel; in the right second gear gear set 26, the third right gear 261 is the driving wheel, and the fourth right gear 262 is the driven wheel. The transmission ratio of the right first gear gear set 25 and the right second gear gear set 26 can be calculated based on the number of teeth of the driving wheel and the driven wheel. The transmission ratio of the right first gear gear set 25 is the number of teeth of the second right gear 252 / the number of teeth of the first right gear 251. For example, when the number of teeth of the second right gear 252 is more than that of the first right gear 251, the right synchronizer 23 is connected to the first right gear 251, and the right first gear gear set 25 will provide a larger transmission ratio. In this case, the torque output of the right wheel is high, which is suitable for situations where the vehicle needs to accelerate; the transmission ratio of the right second gear gear set 26 is the number of teeth of the fourth right gear 262 / the number of teeth of the third right gear 261. When the number of teeth of the fourth right gear 262 is less than that of the third right gear 261, the right synchronizer 23 is connected to the third right gear 261, and the right second gear gear set 26 will provide a smaller transmission ratio. In this case, the speed output of the right wheel is higher, which is suitable for situations where the vehicle needs to travel at high speed.

[0044] Reference Figure 1-Figure 3 According to some embodiments of the present invention, the output shaft of the left motor 11 is spline-connected to the left input shaft 14; the output shaft of the right motor 21 is spline-connected to the right input shaft 24. The output shaft of the left motor 11 and the output shaft of the right motor 21 are spline-connected to the left input shaft 14 and the right input shaft 24 respectively. The spline connection has the characteristics of strong bearing capacity and good transmission capacity, and can transmit a large torque, so that the power output by the left motor 11 and the right motor 21 can be more stably transmitted to the left reducer 12 and the right reducer 22.

[0045] Reference Figure 1-Figure 3 According to some embodiments of the present invention, the left reducer 12 further includes a left output gear set and a left output shaft 191. The left output gear set includes a fifth left gear 17 and a sixth left gear 18 that mesh with each other. The fifth left gear 17 is fixed to the left intermediate shaft 19 and is coaxially arranged with the second left gear 152 and the fourth left gear 162. The sixth left gear 18 is fixed to the left output shaft 191, and the left output shaft 191 is transmission-connected to the left wheel. The power transmission process of the left electric drive unit 10 can be as follows:

[0046] When the left synchronizer 13 is connected to the first left gear 151, the left motor 11 drives the left input shaft 14 to rotate through the output shaft, the left input shaft 14 drives the synchronizer to rotate, the synchronizer drives the first left gear 151 to rotate, the first left gear 151 drives the second left gear 152 meshing with the first left gear 151 to rotate, thereby driving the fifth left gear 17 coaxially arranged with the second left gear 152 to rotate, the fifth left gear 17 drives the sixth left gear 18 meshing with the fifth left gear 17 to rotate, and then drives the left output shaft 191 to rotate, and the left output shaft 191 drives the left wheel to rotate; in the left synchronizer 13, the left input shaft 14 drives the synchronizer to rotate, and the synchronizer drives the first left gear 151 to rotate. When the device 13 is connected to the third left gear 161, the left motor 11 drives the left input shaft 14 to rotate through the output shaft, the left input shaft 14 drives the synchronizer to rotate, the synchronizer drives the third left gear 161 to rotate, the third left gear 161 drives the fourth left gear 162 meshing with the third left gear 161 to rotate, thereby driving the fifth left gear 17 coaxially arranged with the fourth left gear 162 to rotate through the left intermediate shaft 19, the fifth left gear 17 drives the sixth left gear 18 meshing with the fifth left gear 17 to rotate, and then drives the left output shaft 191 to rotate, and the left output shaft 191 drives the left wheel to rotate.

[0047] The right reducer 22 also includes a right output gear set and a right output shaft 291. The right output gear set includes a fifth right gear 27 and a sixth right gear 28 that mesh with each other. The fifth right gear 27 is fixed to the right intermediate shaft 29 and is coaxially arranged with the second right gear 252 and the fourth right gear 262. The sixth right gear 28 is fixed to the right output shaft 291. The right output shaft 291 is transmission-connected to the right wheel. The power transmission process of the right electric drive unit 20 can be as follows:

[0048] When the right synchronizer 23 is connected to the first right gear 251, the right motor 21 drives the right input shaft 24 to rotate through the output shaft, the right input shaft 24 drives the synchronizer to rotate, the synchronizer drives the first right gear 251 to rotate, the first right gear 251 drives the second right gear 252 meshing with the first right gear 251 to rotate, thereby driving the fifth right gear 27 coaxially arranged with the second right gear 252 to rotate, the fifth right gear 27 drives the sixth right gear 28 meshing with the fifth right gear 27 to rotate, and then drives the right output shaft 291 to rotate, and the right output shaft 291 drives the right wheel to rotate; in the right synchronizer When the synchronizer 23 is connected to the third right gear 261, the right motor 21 drives the right input shaft 24 to rotate through the output shaft, the right input shaft 24 drives the synchronizer to rotate, the synchronizer drives the third right gear 261 to rotate, the third right gear 261 drives the fourth right gear 262 meshing with the third right gear 261 to rotate, thereby driving the fifth right gear 27 coaxially arranged with the fourth right gear 262 to rotate through the right intermediate shaft 29, the fifth right gear 27 drives the sixth right gear 28 meshing with the fifth right gear 27 to rotate, and then drives the right output shaft 291 to rotate, and the right output shaft 291 drives the right wheel to rotate.

[0049] Optionally, the second left gear 152, the fourth left gear 162 and the fifth left gear 17 can be rigidly connected by the left intermediate shaft 19 to ensure that the rotation speeds of the second left gear 152, the fourth left gear 162 and the fifth left gear 17 are consistent; the second right gear 252, the fourth right gear 262 and the fifth right gear 27 can be rigidly connected by the right intermediate shaft 29 to ensure that the rotation speeds of the second right gear 252, the fourth right gear 262 and the fifth right gear 27 are consistent.

[0050] Optionally, the second left gear 152, the fourth left gear 162, the fifth left gear 17 and the left intermediate shaft 19 can be an integrally formed part; the second right gear 252, the fourth right gear 262, the fifth right gear 27 and the right intermediate shaft 29 can be an integrally formed part.

[0051] Reference Figure 1-Figure 3 According to some embodiments of the utility model, the first left gear 151 is located on the side of the left synchronizer 13 adjacent to the left motor 11, the fifth left gear 17 is located on the side of the second left gear 152 away from the fourth left gear 162, or the fifth left gear 17 is located between the second left gear 152 and the fourth left gear 162, or the fifth left gear 17 is located on the side of the fourth left gear 162 away from the second left gear 152, so that the overall structure of the left electric drive unit 10 is relatively compact, and the space can be effectively utilized. The fifth left gear 17 can be set at different positions according to actual conditions, and the connection method is relatively flexible.

[0052] The first right gear 251 is located at a side of the right synchronizer 23 adjacent to the right motor 21, the fifth right gear 27 is located at a side of the second right gear 252 away from the fourth right gear 262, or the fifth right gear 27 is located between the second right gear 252 and the fourth right gear 262, or the fifth right gear 27 is located at a side of the fourth right gear 262 away from the second right gear 252. This makes the overall structure of the right electric drive unit 20 more compact, can effectively utilize space, can set the fifth right gear 27 at different positions according to actual conditions, and the connection method is more flexible.

[0053] Reference Figure 1-Figure 3 According to some embodiments of the utility model, the housing of the left motor 11 is a left motor housing, the housing of the right motor 21 is a right motor housing, and the motor controller 31 is fixed to the outer wall of the left motor housing and the outer wall of the right motor housing. An installation space 30 for installing the motor controller 31 is defined between the left electric drive unit 10 and the right electric drive unit 20. The motor controller 31 is electrically connected to the left motor 11 and the right motor 21, so that the overall structure of the electric drive assembly 100 is relatively compact and can effectively utilize space. In addition, the motor controller 31 is connected to the outer wall of the left motor housing and the outer wall of the right motor housing, so that the motor controller 31 is connected more stably.

[0054] Reference Figure 1-Figure 3 According to some embodiments of the present invention, the housing of the motor controller 31 is a controller housing, and the left motor housing, the right motor housing, and the controller housing are all independently molded parts. The controller housing can protect the motor controller 31, and the left motor housing and the right motor housing can protect the left motor 11 and the right motor 21 respectively. In addition, the left motor housing, the right motor housing, and the controller housing are all independently molded parts, which can enhance the flexibility of the electric drive assembly 100 and facilitate maintenance and repair operations on the left motor 11, the right motor 21, and the controller. For example, when the left motor 11 needs to be maintained or repaired, it is only necessary to disassemble the left motor housing, which is more convenient to operate.

[0055] Reference Figure 1-Figure 3 According to some embodiments of the utility model, the motor controller 31 is detachably fixed to the outer wall of the left motor housing and the outer wall of the right motor housing. The connection method is relatively flexible, and the motor controller 31 is connected to the outer wall of the left motor housing and the outer wall of the right motor housing, and the connection is relatively stable. For example, a positioning column can be provided on the motor controller 31, and a positioning hole corresponding to the positioning column is provided at the corresponding position of the left motor housing and the right motor housing. The fasteners are respectively passed through the positioning column on the motor controller 31, the positioning hole on the left motor housing, and the positioning hole on the right motor housing, so that the motor controller 31 can be connected to the outer wall of the left motor housing and the outer wall of the right motor housing. The connection method is relatively simple, and the connection is relatively stable.

[0056] Reference Figure 1-Figure 3 According to some embodiments of the present invention, the housing of the left motor 11 is the left motor housing, and the housing of the right motor 21 is the right motor housing, and the left motor housing and the right motor housing are spaced apart in the left-right direction. The left motor housing and the right motor housing are spaced apart, so that there is a certain safety distance between the left motor 11 and the right motor 21, which can facilitate the heat dissipation of the left motor 11 and the right motor 21.

[0057] According to some embodiments of the utility model, the housing of the left motor 11 is the left motor housing, the housing of the right motor 21 is the right motor housing, the housing of the motor controller 31 is the controller housing, and the left motor housing, the right motor housing and the controller housing are integrally formed. By integrally forming the left motor housing, the right motor housing and the controller housing, the number of parts can be reduced, the assembly process between the left motor housing, the right motor housing and the controller housing can be omitted, and the production efficiency can be improved.

[0058] According to some embodiments of the utility model, the left motor housing, the right motor housing and the controller housing are integrally formed into a motor electronic control housing, the housing of the left reducer 12 is the left reducer housing, the housing of the right reducer 22 is the right reducer housing, the left reducer housing and the right reducer housing are respectively connected to the left and right sides of the motor electronic control housing, the motor electronic control housing, the left reducer housing and the right reducer housing jointly enclose a U-shaped space, and the control module of the motor controller is located in the U-shaped space. By accommodating the control module of the motor controller in the U-shaped space jointly enclosed by the motor electronic control housing, the left reducer housing and the right reducer housing, the overall structure can be made more compact and the space can be used more effectively.

[0059] Reference Figure 1-Figure 3 According to the second aspect of the present invention, a vehicle includes the electric drive assembly 100. For example, the vehicle may be an electric vehicle.

[0060] According to the vehicle of the embodiment of the utility model, the drive assembly of the vehicle includes a left electric drive unit 10 and a right electric drive unit 20. The left electric drive unit 10 and the right electric drive unit 20 can respectively control the left wheel and the right wheel of the vehicle, which can improve the controllability and safety performance of the vehicle. The left electric drive unit 10 has a left first gear gear set 15 and a left second gear gear set 16, and the right electric drive unit 20 has a right first gear gear set 25 and a right second gear gear set 26, so that the electric drive assembly 100 has multiple gears, which can meet different requirements for the transmission ratio of the electric drive assembly 100 under different driving conditions, so that the electric drive assembly 100 has higher flexibility, thereby improving the power and economy of the vehicle, and reducing the requirements for the maximum torque and maximum speed of the left motor 11 and the right motor 21, thereby reducing costs, improving high-speed efficiency, reducing noise and improving the reliability of the vehicle. In addition, an installation space 30 for installing a motor controller 31 is defined between the left electric drive unit 10 and the right electric drive unit 20, so that the overall structure of the electric drive assembly 100 is relatively compact and space can be effectively utilized.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric drive assembly, characterized in that: include: A left electric drive unit, comprising a left motor and a left reducer, wherein the left reducer is adapted to be drivably connected between the left motor and the left wheel, the left reducer comprises a left synchronizer, a left first gear gear set and a left second gear gear set, the left synchronizer is connected to the output shaft of the left motor, the left synchronizer is connected to one of the left first gear gear set and the left second gear gear set or the left synchronizer is not connected to either the left first gear gear set or the left second gear gear set, and the left first gear gear set and the left second gear gear set are both drivably connected to the left wheel; A right electric drive unit, comprising a right motor and a right reducer, wherein the right reducer is adapted to be drivably connected between the right motor and the right wheel, wherein the right reducer comprises a right synchronizer, a right first gear gear set and a right second gear gear set, wherein the right synchronizer is connected to the output shaft of the right motor, wherein the right synchronizer is connected to one of the right first gear gear set and the right second gear gear set or wherein the right synchronizer is not connected to either the right first gear gear set or the right second gear gear set, and wherein the right first gear gear set and the right second gear gear set are both drivably connected to the right wheel; A motor controller, an installation space for installing the motor controller is defined between the left electric drive unit and the right electric drive unit, and the motor controller is electrically connected to both the left motor and the right motor.

2. The electric drive assembly according to claim 1, characterized in that: The left synchronizer includes a left input shaft, the output shaft of the left motor is connected to the left input shaft, the left first gear gear set includes a first left gear and a second left gear meshing with each other, the left second gear gear set includes a third left gear and a fourth left gear meshing with each other, the first left gear and the third left gear are both loosely sleeved on the left input shaft and located on both sides of the axial direction of the left synchronizer, the left synchronizer can be selectively connected to the first left gear or the third left gear, the left reducer also includes a left intermediate shaft, the second left gear and the fourth left gear are both fixed to the left intermediate shaft and are coaxially arranged, and the left intermediate shaft is transmission-connected to the left wheel; The right synchronizer includes a right input shaft, the output shaft of the right motor is connected to the right input shaft, the right first gear gear set includes a first right gear and a second right gear that are meshed with each other, the right second gear gear set includes a third right gear and a fourth right gear that are meshed with each other, the first right gear and the third right gear are both loosely mounted on the right input shaft and are located on both axial sides of the right synchronizer, the right synchronizer can be selectively connected to the first right gear or the third right gear, the right reducer also includes a right intermediate shaft, the second right gear and the fourth right gear are both fixed to the right intermediate shaft and are coaxially arranged, and the right intermediate shaft is transmission-connected to the right wheel.

3. The electric drive assembly according to claim 2, characterized in that: The output shaft of the left motor is spline-connected to the left input shaft; the output shaft of the right motor is spline-connected to the right input shaft.

4. The electric drive assembly according to claim 2, characterized in that: The left speed reducer further comprises a left output gear set and a left output shaft, wherein the left output gear set comprises a fifth left gear and a sixth left gear meshing with each other, wherein the fifth left gear is fixed to the left intermediate shaft and is coaxially arranged with the second left gear and the fourth left gear, and the sixth left gear is fixed to the left output shaft, and the left output shaft is transmission-connected to the left wheel; The right reducer also includes a right output gear set and a right output shaft. The right output gear set includes a fifth right gear and a sixth right gear that mesh with each other. The fifth right gear is fixed to the right intermediate shaft and is coaxially arranged with the second right gear and the fourth right gear. The sixth right gear is fixed to the right output shaft, and the right output shaft is transmission-connected to the right wheel.

5. The electric drive assembly according to claim 4, characterized in that: The first left gear is located on a side of the left synchronizer adjacent to the left motor, the fifth left gear is located on a side of the second left gear away from the fourth left gear, or the fifth left gear is located between the second left gear and the fourth left gear, or the fifth left gear is located on a side of the fourth left gear away from the second left gear; The first right gear is located on a side of the right synchronizer adjacent to the right motor, the fifth right gear is located on a side of the second right gear away from the fourth right gear, or the fifth right gear is located between the second right gear and the fourth right gear, or the fifth right gear is located on a side of the fourth right gear away from the second right gear.

6. The electric drive assembly according to claim 1, characterized in that: The housing of the left motor is a left motor housing, the housing of the right motor is a right motor housing, and the motor controller is fixed to the outer wall of the left motor housing and the outer wall of the right motor housing.

7. The electric drive assembly according to claim 6, characterized in that: The housing of the motor controller is a controller housing, and the left motor housing, the right motor housing and the controller housing are all independently formed parts.

8. The electric drive assembly according to claim 6, characterized in that: The motor controller is detachably fixed to the outer wall of the left motor housing and the outer wall of the right motor housing.

9. The electric drive assembly according to claim 1, characterized in that: The housing of the left motor is a left motor housing, the housing of the right motor is a right motor housing, the housing of the motor controller is a controller housing, and the left motor housing, the right motor housing and the controller housing are integrally formed.

10. The electric drive assembly according to claim 9, characterized in that: The left motor housing, the right motor housing and the controller housing are integrally formed into a motor electronic control housing, the housing of the left reducer is a left reducer housing, the housing of the right reducer is a right reducer housing, the left reducer housing and the right reducer housing are respectively connected to the left and right sides of the motor electronic control housing, the motor electronic control housing, the left reducer housing and the right reducer housing together enclose a U-shaped space, and the control module of the motor controller is located in the U-shaped space.

11. A vehicle, characterized in that: include: An electric drive assembly according to any one of claims 1 to 10.

Images