A drive assembly and vehicle

Abstract

The embodiment of the application provides a driving assembly and a vehicle, the driving assembly comprising: a housing, a first driving motor, a second driving motor, a first speed reduction mechanism, a second speed reduction mechanism, an engine and a generator; the engine and the generator are in transmission connection, the generator is arranged in the housing, the driving assembly has a first direction and a second direction perpendicular to each other, the housing is provided with a first cavity and a second cavity in the second direction, the first driving motor and the second speed reduction mechanism are arranged in the second cavity in the first direction, the second driving motor and the first speed reduction mechanism are arranged in the first cavity in the first direction, the first driving motor and the first speed reduction mechanism are in transmission connection, and the second driving motor and the second speed reduction mechanism are in transmission connection; the output shaft of the first driving motor and the output shaft of the second driving motor are parallel. In this way, it is favorable to reduce the envelope size and the overall volume of the driving assembly.

Description

Technical Field

[0001] This application relates to the field of power drive technology, and more particularly to a drive assembly and a vehicle. Background Technology

[0002] With the rapid iteration of new energy vehicle technology and the continuous improvement of users' requirements for vehicle range and handling performance, power drive systems that combine range extenders and distributed drive functions have gradually become the focus of industry research. Range extenders can use an internal combustion engine to drive a generator to replenish the battery, effectively solving the range anxiety of pure electric vehicles. Distributed drive can significantly improve the vehicle's handling and power response speed by independently controlling each drive wheel and precisely distributing torque through the motor. The combination of the two can achieve both long range and agile handling.

[0003] However, in practical applications, such integrated drive systems must consider the overall layout of the range extender (such as longitudinal or transverse placement) and reserve sufficient installation space for the distributed drive motor sets to avoid interference between components. Therefore, it is inevitable to increase the complexity of the structural design and the difficulty of layout, resulting in a larger overall envelope size and poor structural compactness of the entire drive system. Utility Model Content

[0004] This application provides a drive assembly and a vehicle, aiming to improve the problems of large assembly envelope size and poor structural compactness of drive systems in related technologies.

[0005] To address the aforementioned technical problems, this application provides a drive assembly comprising: a housing, a first drive motor, a second drive motor, a first reduction mechanism, a second reduction mechanism, an engine, and a generator; the engine and the generator are drive-connected, the generator is disposed within the housing, the drive assembly has a first direction and a second direction perpendicular to each other, a first cavity and a second cavity are spaced apart along the second direction in the housing, the first drive motor and the second reduction mechanism are spaced apart along the first direction in the second cavity, the second drive motor and the first reduction mechanism are spaced apart along the first direction in the first cavity, the first drive motor and the first reduction mechanism are drive-connected, and the second drive motor and the second reduction mechanism are drive-connected; the output shafts of the first drive motor and the second drive motor are parallel.

[0006] In this embodiment, two cavities are spaced apart in the housing along a second direction, and a drive motor and a reduction mechanism are arranged spaced apart in each cavity along a first direction. The drive motor in one cavity and the reduction mechanism in the other cavity are connected by transmission, and the output shafts of the two drive motors are arranged in parallel. This is equivalent to the two drive motors being staggered in both the first and second directions, and the two reduction mechanisms also being staggered in both the first and second directions. This allows the two drive motors and the two reduction mechanisms to be highly compact in both the first and second directions without interfering with each other. The space saved by the drive motors and reduction mechanisms can be used to arrange the range extender, thereby reducing the envelope size and overall volume of the drive assembly.

[0007] In some embodiments, the output shafts of the first reduction mechanism and the second reduction mechanism are located on a first axis, the output shafts of the first drive motor and the second drive motor are parallel to each other, and the first drive motor and the second drive motor are distributed on both sides of the first axis along the first direction; the line connecting the projections of the output shafts of the first drive motor, the output shafts of the second drive motor and the first axis in a first plane is a triangle, and the first plane is perpendicular to the second direction.

[0008] In this embodiment, by coaxially arranging the output shafts of the two reduction mechanisms, distributed drive is achieved, allowing the drive assembly to function as a front-wheel drive system driving the two front wheels of the vehicle, or as a rear-wheel drive system driving the two rear wheels of the vehicle. Distributing the two drive motors on both sides of the first axis ensures balanced force distribution on the drive assembly. Furthermore, the line connecting the output shafts of the first and second drive motors and the projection of the first axis onto the first plane is set as a triangle. This is equivalent to the drive assembly having a certain height in the third direction (the vehicle's height direction). In other words, the dimensions in the first and third directions are balanced, neither excessively occupying space in the first nor excessively occupying space in the third direction. This optimization of the dimensions in both directions reduces the envelope size of the drive assembly.

[0009] In some embodiments, the housing includes a first housing, a second housing, and a third housing connected in sequence; the first housing and the second housing enclose a first cavity, and the first deceleration mechanism is rotatably connected to the first housing and the second housing; the third housing and the second housing enclose a second cavity, and the second deceleration mechanism is rotatably connected to the third housing and the second housing.

[0010] In this embodiment, a first housing and a second housing are joined to form a first cavity for accommodating a first reduction mechanism, and a third housing and a second housing are nested together to form a second cavity for accommodating a second reduction mechanism. This allows the rotational connection points of both the second and first reduction mechanisms to be directly fixed to the corresponding housing walls. While ensuring the rigidity of each reduction mechanism's support, this reduces the axial dimensions of the multi-stage transmission structure, decreases space occupancy, and further reduces the overall volume of the drive assembly.

[0011] In some embodiments, the output shaft of the engine and the output shaft of the generator extend along the second direction; or, the output shaft of the engine and the output shaft of the generator extend along the first direction; or, the output shaft of the engine extends along the second direction and the output shaft of the generator extends along the first direction; or, the output shaft of the engine extends along the first direction and the output shaft of the generator extends along the second direction.

[0012] In this embodiment, the output shafts of the engine and the generator are arranged to extend in different directions or in the same direction. This allows for flexible arrangement of the engine and generator positions according to actual needs, making it widely applicable.

[0013] In some embodiments, the generator is disposed in the first cavity or the second cavity, and the generator is arranged at a distance from the first drive motor or the second drive motor in the first direction.

[0014] In this application, by placing the generator in the first cavity or the second cavity, the integration of the drive assembly can be improved, the number of housings can be reduced, and the volume and weight of the drive assembly can be reduced. Arranging the generator at intervals with the first drive motor or the second drive motor in the first direction is equivalent to the generator and the first drive motor or the second drive motor at least partially overlapping in the second direction, which is beneficial to reducing the size of the drive assembly in the second direction, improving the compactness of the drive assembly, and reducing space occupation.

[0015] In some embodiments, the drive assembly further includes a torsional damper and a transmission assembly; the torsional damper is connected to the output shaft of the engine, and the transmission assembly is drively connected between the torsional damper and the generator; the first housing has a receiving groove on the side opposite to the second housing, the torsional damper is disposed in the receiving groove, the transmission assembly is disposed in the first cavity, and the generator is disposed in the second cavity.

[0016] In this embodiment, a receiving groove is provided on the side of the first housing opposite to the second housing, and a torsional damper is built in therein. At the same time, the transmission component in the first cavity directly bridges the torsional damper and the generator. In this way, while keeping the volume of the existing housing unchanged, vibration isolation and active absorption of torque fluctuations in the engine power transmission path are achieved, thereby improving the stability of the generator's operating conditions.

[0017] In some embodiments, the first housing has a receiving groove on the side opposite to the second housing, and the generator is disposed in the receiving groove.

[0018] In this embodiment, a receiving groove is provided on the side of the first housing opposite to the second housing, and the generator is built inside. This facilitates a direct connection between the generator and the engine, thereby improving transmission efficiency.

[0019] In some embodiments, the maximum dimension of the second cavity in the second direction is B, where 200mm ≤ B ≤ 260mm.

[0020] In this embodiment, the maximum dimension B of the second cavity in the second direction is limited to the range of 200mm to 260mm. This effectively shortens the dimension of the second cavity in the second direction.

[0021] In some embodiments, the maximum dimension of the first cavity in the second direction is C, where 200mm ≤ C ≤ 260mm.

[0022] In this embodiment, the maximum dimension C of the first cavity in the second direction is limited to the range of 200mm to 260mm. This effectively shortens the dimension of the second cavity in the second direction.

[0023] In some embodiments, the maximum dimension of the second cavity in the second direction is B, where 220mm ≤ B ≤ 240mm.

[0024] In this embodiment of the application, by limiting the distance B to the range of 220mm to 240mm, the size of the second cavity in the second direction can be reduced while taking into account the volume requirements of the drive assembly and the first drive motor.

[0025] In some embodiments, the maximum dimension of the first cavity in the second direction is C, 220mm≤C≤240mm.

[0026] In this embodiment of the application, by limiting the distance C to the range of 220mm to 240mm, the size of the first cavity in the second direction can be reduced while taking into account the volume requirements of the drive assembly and the second drive motor.

[0027] In some embodiments, the maximum dimension of the first deceleration mechanism along the second direction is L1, and the maximum dimension of the second drive motor along the second direction is L2, where L1≤L2.

[0028] In this embodiment, the maximum dimension L1 of the first reduction mechanism along the second direction is set to be no greater than the maximum dimension L2 of the second drive motor along the second direction. The axial dimension of the drive assembly is mainly affected by the axial dimension of the second drive motor. Thus, when using a second drive motor that meets the power requirements, the axial dimension of the drive assembly can be set to be relatively small.

[0029] In some embodiments, the maximum dimension of the second deceleration mechanism along the second direction is L3, and the maximum dimension of the first drive motor along the second direction is L4, where L3 ≤ L4.

[0030] In this embodiment, the maximum dimension L3 of the second reduction mechanism along the second direction is set to be no greater than the maximum dimension L4 of the first drive motor along the second direction. The axial dimension of the drive assembly is mainly affected by the axial dimension of the drive motor. Thus, when using a first drive motor that meets the power requirements, the axial dimension of the drive assembly can be set to be relatively small.

[0031] In some embodiments, the housing has a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface intersect; the drive assembly further includes a drive motor controller and a generator controller, the drive motor controller is electrically connected to the first drive motor and the second drive motor, and the generator controller is electrically connected to the generator; the drive motor controller is disposed on the first mounting surface, and the generator controller is disposed on the second mounting surface.

[0032] In this embodiment, the drive motor controller is placed on the first mounting surface, and the generator controller is placed on the second mounting surface, with the first and second mounting surfaces intersecting. This allows the drive motor controller and generator controller to be arranged in a three-dimensional configuration at the corner of the housing, thereby reducing the envelope size of the drive assembly.

[0033] In some embodiments, the drive assembly further includes a main controller, wherein the first drive motor, the second drive motor and the generator are electrically connected to the main controller, and the main controller is disposed on the first mounting surface and / or the second mounting surface.

[0034] In this embodiment, the first drive motor, the second drive motor, and the generator are electrically connected to a main controller, which is located on a first mounting surface and / or a second mounting surface. This integration of the drive motor controller and the generator controller into the main controller further reduces the size of the drive assembly.

[0035] In some embodiments, the first mounting surface and the second mounting surface are planes, and the included angle between the first mounting surface and the second mounting surface is in the range of 90°-180°.

[0036] By setting the included angle between the first mounting surface and the second mounting surface to be between 90° and 180°, the problem of insufficient cavity space within the housing due to an excessively small angle can be avoided, while the problem of excessively large drive assembly size can be avoided.

[0037] This application also provides a vehicle including a first wheel, a second wheel, and a drive assembly as described in the above embodiments, wherein the first wheel is connected to the output shaft of the second reduction mechanism, and the second wheel is connected to the output shaft of the first reduction mechanism.

[0038] In this embodiment, the first wheel and the second wheel are both front wheels of the vehicle, or both the first wheel and the second wheel are both rear wheels of the vehicle. The first wheel is connected to the output shaft of the second reduction mechanism, and the second wheel is connected to the output shaft of the first reduction mechanism. This allows the first drive motor to drive the second wheel to rotate independently, and the second drive motor to drive the first wheel to rotate independently, thereby achieving distributed drive.

[0039] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0040] Figure 1 This is a top view of the drive assembly provided in one embodiment of this application, excluding the housing;

[0041] Figure 2 This is a side view of the drive assembly provided in one embodiment of this application, excluding the housing;

[0042] Figure 3 This is a schematic diagram of a drive assembly provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of a housing provided in one embodiment of this application;

[0044] Figure 5 This is a side view of a drive assembly provided in an embodiment of this application;

[0045] Figure 6 yes Figure 5 Sectional view along line AA;

[0046] Figure 7 This is a schematic diagram showing the arrangement of the second drive motor and the first reduction mechanism according to an embodiment of this application;

[0047] Figure 8 This is a schematic diagram showing the arrangement of the first drive motor and the second reduction mechanism according to an embodiment of this application;

[0048] Figure 9 This is a schematic diagram of a drive assembly provided in one embodiment of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Drive assembly; 11. Housing; 111. First housing; 111a. Receiving groove; 112. Second housing; 113. Third housing; 114. First cavity; 115. Second cavity; 116. First mounting surface; 117. Second mounting surface;

[0051] 12. First drive motor; 13. Second drive motor;

[0052] 14. First reduction gear; 141. First stage drive gear; 142. First stage driven gear; 143. First and second stage drive gears; 144. First and second stage driven gears;

[0053] 15. Second reduction mechanism; 151. Second stage drive gear; 152. Second stage driven gear; 153. Second and second stage drive gear; 154. Second and second stage driven gear;

[0054] 16. Generator; 17. Drive motor controller; 18. Generator controller; 19. Torsional damper;

[0055] 20. Transmission assembly; 21. First gear; 22. Second gear;

[0056] 30. First wheel; 40. Second wheel; 50. Engine; 60. First axle;

[0057] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0058] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, this application embodiment provides a drive assembly 10, including: a housing 11, a first drive motor 12, a second drive motor 13, a first reduction mechanism 14, a second reduction mechanism 15, an engine 50, and a generator 16; the engine 50 and the generator 16 are connected in transmission, the generator 16 is disposed inside the housing 11, the drive assembly 10 has a first direction X and a second direction Y that are perpendicular to each other, a first cavity 114 and a second cavity 115 are spaced apart along the second direction Y in the housing 11, the first drive motor 12 and the second reduction mechanism 15 are spaced apart along the first direction X in the second cavity 115, the second drive motor 13 and the first reduction mechanism 14 are spaced apart along the first direction X in the first cavity 114, the first drive motor 12 and the first reduction mechanism 14 are connected in transmission, and the second drive motor 13 and the second reduction mechanism 15 are connected in transmission; the output shaft of the first drive motor 12 and the output shaft of the second drive motor 13 are parallel.

[0060] It should be noted that the first direction X is the radial direction of the output shafts of the first drive motor 12 and the second drive motor 13, and the second direction Y is the axial direction of the output shafts of the first drive motor 12 and the second drive motor 13.

[0061] In this embodiment, two cavities are spaced apart along the second direction Y in the housing 11, and a drive motor and a reduction mechanism are arranged spaced apart along the first direction X in each cavity. The drive motor in one cavity and the reduction mechanism in the other cavity are connected by transmission, and the output shafts of the two drive motors are arranged in parallel. This is equivalent to the two drive motors being staggered in both the first direction X and the second direction Y, and the two reduction mechanisms also being staggered in both the first direction X and the second direction Y. This allows the two drive motors and the two reduction mechanisms to be highly compact in both directions X and Y without interfering with each other. The space saved by the drive motors and reduction mechanisms can be used to arrange the range extender, thereby reducing the envelope size and overall volume of the drive assembly 10.

[0062] Specifically, such as Figure 1 and Figure 2As shown, the second drive motor 13 and the first reduction mechanism 14 are spaced apart along the first direction X, meaning they at least partially overlap in the second direction Y. Similarly, the first drive motor 12 and the second reduction mechanism 15 are spaced apart along the first direction X, also at least partially overlapping in the second direction Y. This reduces the size of the drive assembly 10 along the second direction Y. Furthermore, the first drive motor 12 and the first reduction mechanism 14 are connected by a drive mechanism, as are the second drive motor 13 and the second reduction mechanism 15. The output shafts of the first drive motor 12 and the second drive motor 13 are parallel, effectively meaning the first drive motor 12 and the first reduction mechanism 14 at least partially overlap in the first direction X, and the second drive motor 13 and the second reduction mechanism 15 at least partially overlap in the first direction X. This further reduces the size of the drive assembly 10 along the first direction X. Dimensional optimization in both the first and second directions X and Y improves the structural compactness of the drive assembly 10 and reduces space occupation.

[0063] In addition, the first drive motor 12, the second drive motor 13, the first reduction mechanism 14, the second reduction mechanism 15, and the generator 16 are housed in the housing 11. The housing 11 can protect the first drive motor 12, the second drive motor 13, the first reduction mechanism 14, the second reduction mechanism 15, and the generator 16 from damage caused by external impacts. It can also prevent foreign objects from entering the housing 11 and thus avoid affecting the operation of the drive assembly 10.

[0064] It should be noted that the second drive motor 13 and the first reduction mechanism 14 can also be disposed in the second cavity 115, and the first drive motor 12 and the second reduction mechanism 15 can be disposed in the first cavity 114. This application embodiment does not limit this.

[0065] Furthermore, the engine 50 is connected to the generator 16 via a transmission connection. This allows the engine 50 to drive the generator 16, thereby generating electricity. Further, the generator 16 can also be electrically connected to the battery pack, and the first drive motor 12 and the second drive motor 13 are also electrically connected to the battery pack. In this way, the engine 50 drives the generator 16 to rotate, causing the generator 16 to generate electricity, which is then transferred to the battery pack to provide power to the first drive motor 12 and the second drive motor 13.

[0066] In some embodiments, such as Figure 2 and Figure 9As shown, the output shafts of the first reduction mechanism 14 and the second reduction mechanism 15 are located on the first axis 60. The output shafts of the first drive motor 12 and the second drive motor 13 are parallel to the first axis 60, and the first drive motor 12 and the second drive motor 13 are distributed on both sides of the first axis 60 along the first direction X. The line connecting the projections of the output shafts of the first drive motor 12 and the second drive motor 13 onto the first axis 60 in the first plane is a triangle, and the first plane is perpendicular to the second direction Y.

[0067] It should be noted that the first plane refers to the plane perpendicular to the second direction Y; the projections of the output shaft of the first drive motor 12, the output shaft of the second drive motor 13, and the first axis 60 in the first plane are three points, and these three points are connected in sequence to form a triangle.

[0068] In this embodiment, by coaxially arranging the output shafts of the two reduction mechanisms, distributed drive is achieved, allowing the drive assembly 10 to function as a front-wheel drive driving the two front wheels of the vehicle, or as a rear-wheel drive driving the two rear wheels of the vehicle. Distributing the two drive motors on both sides of the first axis 60 ensures balanced force distribution on the drive assembly 10. Furthermore, the line connecting the output shafts of the first drive motor 12, the second drive motor 13, and the projection of the first axis 60 onto the first plane is set as a triangle. This is equivalent to the drive assembly 10 having a certain height in the third direction Z (the vehicle's height direction). In other words, the dimensions in the first direction X and the third direction Z are balanced, neither excessively occupying space in the first direction X nor excessively occupying space in the third direction Z. This optimizes the dimensions in both directions X and Z, reducing the envelope size of the drive assembly. It should be noted that the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0069] In some embodiments, such as Figure 3 , Figure 4 and Figure 9 As shown, the housing 11 includes a first housing 111, a second housing 112, and a third housing 113 connected in sequence; the first housing 111 and the second housing 112 enclose a first cavity 114, and a first deceleration mechanism 14 is rotatably connected to the first housing 111 and the second housing 112; the third housing 113 and the second housing 112 enclose a second cavity 115, and a second deceleration mechanism 15 is rotatably connected to the third housing 113 and the second housing 112.

[0070] In this embodiment, the first housing 111 and the second housing 112 are enclosed to form a first cavity 114 for accommodating the first reduction mechanism 14, and the third housing 113 and the second housing 112 are nested together to form a second cavity 115 for accommodating the second reduction mechanism 15. This allows the rotational connection points of the second reduction mechanism 15 and the first reduction mechanism 14 to be directly fixed to the corresponding housing 11 wall surface. While ensuring the rigidity of each reduction mechanism, this reduces the axial dimension of the multi-stage transmission structure, decreases space occupation, and further reduces the overall volume of the drive assembly 10.

[0071] In addition, dividing the housing 11 into a first housing 111, a second housing 112 and a third housing 113 helps to reduce the difficulty of processing and provides convenience for the installation of the second deceleration mechanism 15 and the first deceleration mechanism 14.

[0072] In some embodiments, the first housing 111, the second housing 112, and the third housing 113 may be made of metallic materials, such as aluminum alloy, high-strength steel, etc.; in addition, the first housing 111, the second housing 112, and the third housing 113 may be connected together by welding or by bolts.

[0073] In some embodiments, such as Figure 9 As shown, the output shaft of the engine 50 and the output shaft of the generator 16 extend along the second direction Y; or, the output shaft of the engine 50 and the output shaft of the generator 16 extend along the first direction X; or, the output shaft of the engine 50 extends along the second direction Y and the output shaft of the generator 16 extends along the first direction X; or, the output shaft of the engine 50 extends along the first direction X and the output shaft of the generator 16 extends along the second direction Y.

[0074] In this embodiment, the output shafts of the engine 50 and the generator 16 are arranged to extend in different directions or in the same direction. This allows for flexible arrangement of the positions of the engine 50 and the generator 16 according to actual needs, making it widely applicable.

[0075] In some embodiments, the output shafts of the engine 50, generator 16, first drive motor 12 and second drive motor 13 are parallel to each other, that is, the output shafts of the engine 50, generator 16, first drive motor 12 and second drive motor 13 all extend along the second direction Y, which is equivalent to the engine 50 and generator 16 being transversely positioned, thereby reducing the size of the drive assembly 10 in the first direction X.

[0076] In other embodiments, the engine 50 and generator 16 may be longitudinally positioned, i.e., the output shafts of the engine 50 and generator 16 extend along the first direction X, thereby reducing the size of the drive assembly 10 in the second direction Y.

[0077] In other embodiments, the engine 50 may be positioned transversely and the generator 16 longitudinally, i.e., the output shaft of the engine 50 extends along the second direction Y, and the output shaft of the generator 16 extends along the first direction X; or, the engine 50 may be positioned longitudinally and the generator 16 transversely, i.e., the output shaft of the engine 50 extends along the first direction X, and the output shaft of the generator 16 extends along the second direction Y. The generator 16 and the engine 50 may be connected by a bevel gear so that the output shafts of the engine 50 and the generator 16 are perpendicular to each other. Those skilled in the art can choose according to actual needs, and the embodiments of this application are not limited herein.

[0078] In some embodiments, such as Figure 7 and Figure 9 As shown, the first reduction mechanism 14 includes a first-stage driving gear 141, a first-stage driven gear 142, a first-stage driving gear 143, a first-stage driven gear 144, a first input shaft, a first intermediate shaft, and a first output shaft. The first-stage driving gear 141 is mounted on the first input shaft and is connected to the output shaft of the first drive motor 12 via the first input shaft. The first-stage driven gear 142 and the first-stage driving gear 143 are coaxially mounted on the first intermediate shaft. The first-stage driven gear 142 meshes with the first-stage driving gear 141, and the first-stage driven gear 144 meshes with the first-stage driving gear 143. The first-stage driven gear 144 is mounted on the first output shaft, which is connected to the first driven component and is used to output power to the first driven component. The first-stage driving gear 141, the first-stage driven gear 142, the first-stage driving gear 143, and the first-stage driven gear 144 are rotatably connected to the housing 11 via the first input shaft, the first intermediate shaft, and the first output shaft, respectively.

[0079] In some embodiments, such as Figure 8 and Figure 9As shown, the second reduction mechanism 15 includes a second primary drive gear 151, a second primary driven gear 152, a second secondary drive gear 153, a second secondary driven gear 154, a second input shaft, a second intermediate shaft, and a second output shaft. The second primary drive gear 151 is mounted on the second input shaft and is connected to the output shaft of the second drive motor 13 via the second input shaft. The second primary driven gear 152 and the second secondary drive gear 153 are coaxially mounted on the second intermediate shaft. The second primary driven gear 152 meshes with the second primary drive gear 151, and the second secondary driven gear 154 meshes with the second secondary drive gear 153. The second secondary driven gear 154 is mounted on the second output shaft, which is connected to the second driven component and is used to output power to the second driven component. The second primary drive gear 151, the second primary driven gear 152, the second secondary drive gear 153, and the second secondary driven gear 154 are rotatably connected to the housing 11 via the second input shaft, the second intermediate shaft, and the second output shaft, respectively.

[0080] In some embodiments, such as Figure 9 As shown, the generator 16 is disposed in the first cavity 114 or the second cavity 115, and the generator 16 is arranged at intervals with the first drive motor 12 or the second drive motor 13 in the first direction X.

[0081] In this embodiment, placing the generator 16 in the first cavity 114 or the second cavity 115 can improve the integration of the drive assembly 10, reduce the number of housings, and thus reduce the volume and weight of the drive assembly 10. Arranging the generator 16 at intervals with the first drive motor 12 or the second drive motor 13 in the first direction X is equivalent to the generator 16 and the first drive motor 12 or the second drive motor 13 at least partially overlapping in the second direction Y, which is beneficial to reducing the size of the drive assembly 10 along the second direction Y, improving the compactness of the drive assembly 10, and reducing space occupation.

[0082] In some embodiments, such as Figure 3 and Figure 9 As shown, the drive assembly 10 also includes a torsional damper 19 and a transmission assembly 20; the torsional damper 19 is connected to the output shaft of the engine 50, and the transmission assembly 20 is connected between the torsional damper 19 and the generator 16; the first housing 111 has a receiving groove 111a on the side opposite to the second housing 112, the torsional damper 19 is disposed in the receiving groove 111a, the transmission assembly 20 is disposed in the first cavity 114, and the generator 16 is disposed in the second cavity 115.

[0083] In this embodiment, a receiving groove 111a is provided on the side of the first housing 111 opposite to the second housing 112, and a torsional damper 19 is built in therein. At the same time, the transmission component 20 in the first cavity 114 directly bridges the torsional damper 19 and the engine 50. In this way, while keeping the volume of the existing housing 11 unchanged, vibration isolation and active absorption of torque fluctuations in the power transmission path of the engine 50 are achieved, thereby improving the operating stability of the generator 16.

[0084] Furthermore, by housing the generator 16, transmission assembly 20, and torsional damper 19 within the housing 11, damage to these components due to external impacts can be prevented, and foreign objects can be kept out of the housing 11 to avoid affecting the operation of the drive assembly 10. On the other hand, this also increases the integration of the drive assembly 10 and reduces its size.

[0085] In some embodiments, such as Figure 9 As shown, the transmission assembly 20 includes a first gear 21 and a second gear 22 that mesh with each other; the first gear 21 and the second gear 22 are disposed in the first cavity 114; the first gear 21 is rotatably connected to the first housing 111 and the second housing 112, and the first gear 21 is fixedly connected to the torsional damper 19; the second gear 22 is rotatably connected to the second housing 112, and the second gear 22 is fixedly connected to the generator 16.

[0086] In this embodiment, a first gear 21 and a second gear 22 that mesh with each other are arranged in the first cavity 114. The first gear 21 is rotatably connected to the first housing 111 and the second housing 112, and is fixedly connected to the torsional damper 19. The second gear 22 is rotatably connected to the second housing 112 and is fixedly connected to the generator 16. In this way, while keeping the volume of the existing housing 11 unchanged, the input torque of the generator 16 is changed by the first gear 21 and the second gear 22. On the one hand, a smaller generator 16 can be used, saving space and cost; on the other hand, the generator 16 can operate in the high-efficiency range, reducing energy transfer losses.

[0087] In some embodiments, to achieve efficient speed-up operation of the generator 16, the transmission ratio between the first gear 21 and the second gear 22 can be configured as a speed-up ratio mode, that is, the number of teeth of the first gear 21 is set to be greater than the number of teeth of the second gear 22; that is, the transmission ratio = Z2 / Z1 < 1, where Z1 is the number of teeth of the first gear 21 and Z2 is the number of teeth of the second gear 22. Through this tooth difference design, when the engine speed 50 input by the torsional damper 19 is transmitted to the second gear 22 through the first gear 21, the input shaft speed of the generator 16 will be proportionally amplified, thereby improving the power conversion efficiency and energy recovery response speed, while avoiding the interference of low-frequency torque fluctuations on power generation quality.

[0088] In some embodiments, such as Figure 3 and Figure 9 As shown, the first housing 111 has a receiving groove 111a on the side opposite to the second housing 112, and the generator 16 is disposed in the receiving groove 111a.

[0089] In this embodiment, a receiving groove 111a is provided on the side of the first housing 111 opposite to the second housing 112, and the generator 16 is built inside. This facilitates a direct connection between the generator 16 and the engine 50, thereby improving transmission efficiency.

[0090] In some embodiments, such as Figure 6 As shown, the maximum dimension of the second cavity 115 in the second direction Y is B, where 200mm ≤ B ≤ 260mm. Preferably, 220mm ≤ B ≤ 240mm.

[0091] It should be noted that the second cavity 115 has two opposing cavity bottoms along the second direction Y, and the maximum distance between the two cavity bottoms is B.

[0092] In this embodiment, the maximum dimension B of the second cavity 115 in the second direction Y is limited to the range of 200mm to 260mm. This effectively shortens the dimension of the second cavity 115 in the second direction Y. Furthermore, by further limiting the distance B to the range of 220mm to 240mm, the dimension of the second cavity 115 in the second direction Y can be reduced while simultaneously considering the volume requirements of the drive assembly 10 and the first drive motor 12.

[0093] For example, the maximum dimension B of the second cavity 115 in the second direction Y can be set to any value among 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, and 260mm, or any range between any two values.

[0094] In some embodiments, such as Figure 6 As shown, the maximum dimension of the first cavity 114 in the second direction Y is C, where 200mm ≤ C ≤ 260mm. Preferably, 220mm ≤ C ≤ 240mm.

[0095] It should be noted that the first cavity 114 has two cavity bottoms arranged opposite to each other along the second direction Y, and the maximum distance between the two cavity bottoms is C.

[0096] In this embodiment, the maximum dimension C of the first cavity 114 in the second direction Y is limited to the range of 200mm to 260mm. This effectively shortens the dimension of the second cavity 115 in the second direction Y. Furthermore, by further limiting the distance C to the range of 220mm to 240mm, the dimension of the first cavity 114 in the second direction Y can be reduced while still meeting the volume requirements of the drive assembly 10 and the second drive motor 13.

[0097] For example, the maximum dimension C of the first cavity 114 in the second direction Y can be set to any value among 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, and 260mm, or any range between any two values.

[0098] In some embodiments, such as Figure 1 As shown, the maximum dimension of the first reduction mechanism 14 along the second direction Y is L1, and the maximum dimension of the second drive motor 13 along the second direction Y is L2, where L1≤L2.

[0099] In this embodiment, the maximum dimension L1 of the first reduction mechanism 14 along the second direction Y is set to be no greater than the maximum dimension L2 of the second drive motor 13 along the second direction Y. The axial dimension of the drive assembly 10 is mainly affected by the axial dimension of the second drive motor 13. Thus, when using the second drive motor 13 that meets the power requirements, the axial dimension of the drive assembly 10 can be set to be relatively small.

[0100] In some embodiments, such as Figure 1 As shown, the maximum dimension of the second reduction mechanism 15 along the second direction Y is L3, and the maximum dimension of the first drive motor 12 along the second direction Y is L4, where L3≤L4.

[0101] In this embodiment, the maximum dimension L3 of the second reduction mechanism 15 along the second direction Y is set to be no greater than the maximum dimension L4 of the first drive motor 12 along the second direction Y. The axial dimension of the drive assembly 10 is mainly affected by the axial dimension of the first drive motor 12. Thus, when using the first drive motor 12 that meets the power requirements, the axial dimension of the drive assembly 10 can be set to be relatively small.

[0102] In some embodiments, such as Figure 1 As shown, the dimensions of L1 satisfy: 100mm≤L1≤150mm; and / or, the dimensions of L2 satisfy: 140mm≤L2≤200mm.

[0103] In this embodiment, the dimension of L1 is set between 140mm and 200mm. This allows for a larger axial extension space, which in turn increases the torque of the second drive motor 13 and reduces its energy loss. Alternatively, the dimension of L1 is set between 100mm and 150mm to match the dimension of L2.

[0104] For example, the size of L1 can be set to any value among 100mm, 110mm, 120mm, 130mm, 140mm, and 150mm, or any range between two values.

[0105] For example, the size of L2 can be set to any value among 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, and 200mm, or any range between two values.

[0106] In some embodiments, such as Figure 4 and Figure 5 As shown, the housing 11 has a first mounting surface 116 and a second mounting surface 117, which intersect. The drive assembly 10 also includes a drive motor controller 17 and a generator controller 18. The drive motor controller 17 is electrically connected to the first drive motor 12 and the second drive motor 13, and the generator controller 18 is electrically connected to the generator 16. The drive motor controller 17 is located on the first mounting surface 116, and the generator controller 18 is located on the second mounting surface 117.

[0107] In this embodiment, the drive motor controller 17 is disposed on the first mounting surface 116, and the generator controller 18 is disposed on the second mounting surface 117, with the first mounting surface 116 and the second mounting surface 117 intersecting. This allows the drive motor controller 17 and the generator controller 18 to form a three-dimensional arrangement at the corner of the housing 11, thereby reducing the envelope size of the drive assembly 10.

[0108] In some embodiments, such as Figure 4 As shown, both the second housing 112 and the third housing 113 are provided with a first mounting surface 116 and a second mounting surface 117. This facilitates increasing the area of ​​the first mounting surface 116 and the second mounting surface 117, thereby enabling the installation of the drive motor controller 17 and the generator controller 18.

[0109] In some embodiments, the drive assembly 10 further includes a main controller (not shown in the figure), the first drive motor 12, the second drive motor 13 and the generator 16 are electrically connected to the main controller, and the main controller is disposed on the first mounting surface 116 and / or the second mounting surface 117.

[0110] In this embodiment, the first drive motor 12, the second drive motor 13, and the generator 16 are electrically connected to the main controller, which is located on the first mounting surface 116 and / or the second mounting surface 117. This integration of the drive motor controller 17 and the generator controller 18 into the main controller further reduces the size of the drive assembly 10.

[0111] It should be noted that the function of the main controller is equivalent to the sum of the functions of the drive motor controller 17 and the generator controller 18.

[0112] In some embodiments, such as Figure 3 As shown, the first mounting surface 116 and the second mounting surface 117 are planes, and the included angle between the first mounting surface 116 and the second mounting surface 117 is in the range of 90°-180°.

[0113] By setting the included angle between the first mounting surface 116 and the second mounting surface 117 to be between 90° and 180°, the problem of insufficient cavity space within the housing 11 caused by an excessively small angle can be avoided, while the problem of excessively large drive assembly 10 caused by an excessively large angle can also be avoided.

[0114] For example, the included angle between the first mounting surface 116 and the second mounting surface 117 can be set to any value among 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, and 180°, or any range between any two values.

[0115] Preferably, the included angle between the first mounting surface 116 and the second mounting surface 117 is in the range of 120°-150°. In this way, when the included angle between the first mounting surface 116 and the second mounting surface 117 is in the range of 120°-150°, the envelope size of the drive assembly 10 can be reduced while taking into account both the volume of the drive assembly 10 and the installation requirements of the controller.

[0116] This application also provides a vehicle including a first wheel 30, a second wheel 40 and a drive assembly 10 as described in the above embodiment, wherein the first wheel 30 is connected to the output shaft of the second reduction mechanism 15, and the second wheel 40 is connected to the output shaft of the first reduction mechanism 14.

[0117] In this embodiment, the first wheel 30 and the second wheel 40 are both front wheels of the vehicle, or the first wheel 30 and the second wheel 40 are both rear wheels of the vehicle. The first wheel 30 is connected to the output shaft of the second reduction mechanism 15, and the second wheel 40 is connected to the output shaft of the first reduction mechanism 14. This allows the first drive motor 12 to drive the second wheel 40 to rotate independently, and the second drive motor 13 to drive the first wheel 30 to rotate independently, thereby achieving distributed drive.

[0118] Furthermore, in specific applications, the first direction X represents the length of the vehicle, the second direction Y represents the width of the vehicle, and the third direction Z represents the height of the vehicle. Because the dimensions of the drive assembly 10 in the first direction X, the second direction Y, and the third direction Z have been optimized, the overall envelope size is smaller. Thus, reducing the size of the drive assembly 10 in the first direction X allows for more installation space for the battery pack without affecting its capacity; reducing the size of the drive assembly 10 in the second direction Y facilitates its installation in narrower vehicles, making it suitable for compact models; and reducing the size of the drive assembly 10 in the third direction Z allows for more space in the passenger compartment without affecting seat height.

[0119] Specifically, such as Figure 2 and Figure 9 As shown, the output shafts of the first reduction mechanism 14 and the second reduction mechanism 15 are located on the first axis 60. The output shafts of the first drive motor 12 and the second drive motor 13 are parallel to the first axis 60, and the first drive motor 12 and the second drive motor 13 are distributed on both sides of the first axis 60 along the first direction X. The lines connecting the projections of the output shafts of the first drive motor 12 and the second drive motor 13 onto the first axis 60 in the first plane are set as triangles. This is equivalent to the drive assembly 10 having a certain height in the third direction Z (the vehicle's height direction), thus achieving a balance in both the first direction X and the third direction Z, without excessively occupying space in either direction X or Z, thereby optimizing the dimensions in both directions. Furthermore, as... Figure 1 and Figure 2 As shown, the second drive motor 13 and the first reduction mechanism 14 are spaced apart along the first direction X, meaning they at least partially overlap in the second direction Y. The first drive motor 12 and the second reduction mechanism 15 are also spaced apart along the first direction X, meaning they at least partially overlap in the second direction Y. This reduces the size of the drive assembly 10 along the second direction Y. Simultaneously, the first drive motor 12 and the first reduction mechanism 14 are connected by a drive mechanism, and the second drive motor 13 and the second reduction mechanism 15 are also connected by a drive mechanism. Furthermore, the output shafts of the first drive motor 12 and the second drive motor 13 are parallel, which is equivalent to the first drive motor 12 and the first reduction mechanism 14 at least partially overlapping in the first direction X, and the second drive motor 13 and the second reduction mechanism 15 at least partially overlapping in the first direction X. This further reduces the size of the drive assembly 10 along the first direction X.

[0120] In summary, the drive assembly 10 of this application, through a reasonable structural arrangement, can optimize the size of the drive assembly 10 in the first direction X, the second direction Y, and the third direction Z, thereby improving the structural compactness of the drive assembly 10 and reducing space occupation.

[0121] The vehicle provided in this application embodiment has a range-extending mode and a pure electric distributed drive mode: In the pure electric distributed drive mode, the first drive motor 12 and the second drive motor 13 are working, while the engine 50 and the generator 16 are not working; the first drive motor 12 converts the electrical energy in the battery pack into driving force and outputs it to the second wheel 40, and the second drive motor 13 converts the electrical energy in the battery pack into driving force and outputs it to the first wheel 30; In the range-extending mode, the first drive motor 12, the second drive motor 13, the engine 50 and the generator 16 are all working, the engine 50 outputs power to the generator 16, the generator 16 generates electricity to charge the battery pack, the first drive motor 12 converts the electrical energy supplied by the generator 16 to the battery pack into driving force and outputs it to the second wheel 40, and the second drive motor 13 converts the electrical energy supplied by the generator 16 to the battery pack into driving force and outputs it to the first wheel 30.

[0122] In this application, "multiple" refers to two or more.

[0123] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0124] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0125] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0126] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A drive assembly (10) characterized by, include: Housing (11), first drive motor (12), second drive motor (13), first reduction mechanism (14), second reduction mechanism (15), engine (50) and generator (16); The engine (50) and the generator (16) are connected by transmission. The generator (16) is located inside the housing (11). The drive assembly (10) has a first direction (X) and a second direction (Y) that are perpendicular to each other. The housing (11) has a first cavity (114) and a second cavity (115) spaced apart along the second direction (Y). The first drive motor (12) and the second reduction mechanism (15) are arranged spaced apart in the second cavity (115) along the first direction (X). The second drive motor (13) and the first reduction mechanism (14) are arranged spaced apart in the first cavity (114) along the first direction (X). The first drive motor (12) and the first reduction mechanism (14) are connected by transmission. The second drive motor (13) and the second reduction mechanism (15) are connected by transmission. The output shaft of the first drive motor (12) is parallel to the output shaft of the second drive motor (13).

2. The drive assembly (10) according to claim 1, characterized in that The output shafts of the first deceleration mechanism (14) and the second deceleration mechanism (15) are located on the first axis (60). The output shafts of the first drive motor (12), the second drive motor (13) and the first axis (60) are parallel to each other, and the first drive motor (12) and the second drive motor (13) are distributed on both sides of the first axis (60) along the first direction (X). The line connecting the output shaft of the first drive motor (12), the output shaft of the second drive motor (13), and the projection of the first axis (60) onto the first plane forms a triangle, and the first plane is perpendicular to the second direction (Y).

3. The drive assembly (10) according to claim 2, characterized in that The housing (11) includes a first housing (111), a second housing (112), and a third housing (113) connected in sequence; The first housing (111) and the second housing (112) enclose to form the first cavity (114), and the first deceleration mechanism (14) is rotatably connected to the first housing (111) and the second housing (112); the third housing (113) and the second housing (112) enclose to form the second cavity (115), and the second deceleration mechanism (15) is rotatably connected to the third housing (113) and the second housing (112).

4. The drive assembly (10) according to claim 2, characterized in that The output shaft of the engine (50) and the output shaft of the generator (16) extend along the second direction (Y); or, the output shaft of the engine (50) and the output shaft of the generator (16) extend along the first direction (X); or, the output shaft of the engine (50) extends along the second direction (Y), and the output shaft of the generator (16) extends along the first direction (X); or, the output shaft of the engine (50) extends along the first direction (X), and the output shaft of the generator (16) extends along the second direction (Y).

5. The drive assembly (10) according to claim 3, characterized in that The generator (16) is disposed in the first cavity (114) or the second cavity (115), and the generator (16) is arranged at intervals from the first drive motor (12) or the second drive motor (13) in the first direction (X).

6. The drive assembly (10) according to claim 5, characterized in that, The drive assembly (10) also includes a torsional damper (19) and a transmission assembly (20); The torsional damper (19) is connected to the output shaft of the engine (50), and the transmission assembly (20) is connected between the torsional damper (19) and the generator (16). The first housing (111) has a receiving groove (111a) on the side opposite to the second housing (112), the torsional damper (19) is disposed in the receiving groove (111a), the transmission assembly (20) is disposed in the first cavity (114), and the generator (16) is disposed in the second cavity (115).

7. The drive assembly (10) according to claim 3, characterized in that, The first housing (111) has a receiving groove (111a) on the side opposite to the second housing (112), and the generator (16) is disposed in the receiving groove (111a).

8. The drive assembly (10) according to claim 1, characterized in that, The maximum dimension of the second cavity (115) in the second direction (Y) is B, 200mm≤B≤260mm; and / or, the maximum dimension of the first cavity (114) in the second direction (Y) is C, 200mm≤C≤260mm.

9. The drive assembly (10) according to claim 8, characterized in that, The maximum dimension of the second cavity (115) in the second direction (Y) is B, 220mm≤B≤240mm; and / or, the maximum dimension of the first cavity (114) in the second direction (Y) is C, 220mm≤C≤240mm.

10. The drive assembly (10) according to claim 1, characterized in that, The maximum dimension of the first deceleration mechanism (14) along the second direction (Y) is L1, the maximum dimension of the second drive motor (13) along the second direction (Y) is L2, and L1≤L2; and / or, the maximum dimension of the second deceleration mechanism (15) along the second direction (Y) is L3, the maximum dimension of the first drive motor (12) along the second direction (Y) is L4, and L3≤L4.

11. The drive assembly (10) according to claim 1, characterized in that, The housing (11) is provided with a first mounting surface (116) and a second mounting surface (117), the first mounting surface (116) and the second mounting surface (117) intersect; The drive assembly (10) further includes a drive motor controller (17) and a generator controller (18). The drive motor controller (17) is electrically connected to the first drive motor (12) and the second drive motor (13), and the generator controller (18) is electrically connected to the generator (16). The drive motor controller (17) is located on the first mounting surface (116), and the generator controller (18) is located on the second mounting surface (117). Alternatively, the drive assembly (10) further includes a main controller. The first drive motor (12), the second drive motor (13), and the generator (16) are electrically connected to the main controller, and the main controller is located on the first mounting surface (116) and / or the second mounting surface (117).

12. The drive assembly (10) according to claim 11, characterized in that, The first mounting surface (116) and the second mounting surface (117) are planes, and the included angle between the first mounting surface (116) and the second mounting surface (117) is in the range of 90°-180°.

13. A vehicle, characterized in that, It includes a first wheel (30), a second wheel (40), and a drive assembly (10) as described in any one of claims 1-12, wherein the first wheel (30) is connected to the output shaft of the second reduction mechanism (15), and the second wheel (40) is connected to the output shaft of the first reduction mechanism (14).

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