A drive assembly and a vehicle

Abstract

The embodiment of the present application provides a driving assembly and a vehicle, in which the engine is in driving connection with the generator, the first driving motor is in driving connection with the first transmission assembly, and the second driving motor is in driving connection with the second transmission assembly; the first combination disconnecting mechanism is connected between the engine and the first transmission assembly and is used for controlling the power on-off between the engine and the first transmission assembly; the second combination disconnecting mechanism is connected between the engine and the second transmission assembly and is used for controlling the power on-off between the engine and the second transmission assembly; the first transmission assembly and the second driving motor are arranged at intervals in a first direction and at least partially overlap in a second direction; the second transmission assembly and the first driving motor are arranged at intervals in the first direction and at least partially overlap in the second direction, and the first direction is perpendicular to the second direction. The driving assembly of the present application can reduce the space occupation in the second direction, so that the structure of the driving assembly is more compact.

Description

Technical Field

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

[0002] With the rapid iteration of the automotive industry and new energy technologies, power drive systems are developing rapidly towards multi-functional integration. Existing power drive systems can already achieve the integration of multiple drive forms. For example, they can have the core functions of both distributed drive systems and hybrid drive systems. The former 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 latter can significantly reduce fuel consumption and emissions by using the engine to provide continuous power output and using the motor to achieve energy recovery and high-efficiency operation under low load.

[0003] However, while this multi-functional integrated drive system brings performance advantages, it also faces significant technical challenges. Because it requires the integration of multiple independent power sources and the matching of complex transmission mechanisms, the overall layout of the system becomes significantly more difficult. An unreasonable structural layout will lead to an increase in the size and weight of the drive system, a decrease in structural compactness, and will be detrimental to its installation on the vehicle. Utility Model Content

[0004] This application provides a drive assembly and vehicle, aiming to improve the problem of increased size and weight and decreased structural compactness of multi-functional integrated drive systems due to unreasonable structural layout.

[0005] To address the aforementioned problems, this application provides a drive assembly comprising an engine, a generator, a first drive motor, a second drive motor, a first transmission assembly, a second transmission assembly, a first engagement / disengagement mechanism, and a second engagement / disengagement mechanism. The engine is driveably connected to the generator; the first drive motor is driveably connected to the first transmission assembly; and the second drive motor is drively connected to the second transmission assembly. The first engagement / disengagement mechanism is connected between the engine and the first transmission assembly and is used to control the power supply between the engine and the first transmission assembly. The second engagement / disengagement mechanism is connected between the engine and the second transmission assembly and is used to control the power supply between the engine and the second transmission assembly. The first transmission assembly and the second drive motor are spaced apart in a first direction and at least partially overlap in a second direction. The second transmission assembly and the first drive motor are spaced apart in the first direction and at least partially overlap in the second direction, wherein the first direction is perpendicular to the second direction.

[0006] In the embodiments of this application, by spaced apart from the first transmission component and the second drive motor in the first direction and at least partially overlapping in the second direction, and by spaced apart from the second transmission component and the first drive motor in the first direction and at least partially overlapping in the second direction, the space occupied by the drive assembly in the second direction can be reduced, making the structure of the drive assembly more compact.

[0007] In some embodiments, the drive assembly further includes a first drive shaft driven through the output shaft of the engine. The first transmission assembly includes a first input stage gear pair, a first output stage gear pair, a first input shaft, and a first output shaft. The first input stage gear pair is connected to the first input shaft, and the first output stage gear pair is connected to the first output shaft. The first input stage gear pair is driven through the first engagement / disengagement mechanism and the output shaft of the first drive motor, respectively. The first output stage gear pair is driven through the first input stage gear pair and is used to output power. The second transmission assembly includes a second input stage gear pair, a second output stage gear pair, a second input shaft, and a second output shaft. The second input stage gear pair... The gear pair is connected to the second input shaft, the second output stage gear pair is connected to the second output shaft, the second input stage gear pair is connected to the second engagement / disengagement mechanism and the output shaft of the second drive motor respectively, and the second output stage gear pair is connected to the second input stage gear pair and is used to output power; the first output shaft and the second output shaft are located on the first axis, the first input shaft is coaxially connected to the output shaft of the first drive motor, the second input shaft is coaxially connected to the output shaft of the second drive motor, the first input shaft, the second input shaft and the first axis are parallel to each other, and the first axis is located between the first input shaft and the second input shaft in the first direction.

[0008] In some embodiments, the first input shaft and the first axis are located in a first plane, the second input shaft and the first axis are located in a second plane, and the angle between the first plane and the second plane is α, where 30°≤α≤150°.

[0009] In some embodiments, the first coupling disconnection mechanism and the second coupling disconnection mechanism are disposed on the first drive shaft; the first drive shaft and the first axis are located in a third plane, and the third plane is located between the first plane and the second plane.

[0010] In some embodiments, the angle between the third plane and the first plane is α1, 40°≤α1≤50°; and / or, the angle between the third plane and the second plane is α2, 40°≤α2≤50°.

[0011] In some embodiments, the first transmission assembly further includes a first intermediate shaft, the first input stage gear pair includes a first input stage driving gear and a first input stage driven gear, the first input stage driving gear is disposed on the first transmission shaft and selectively connected to the engine through the first engagement / disengagement mechanism, the first input stage driven gear is disposed on the first intermediate shaft and meshes with the first input stage driving gear, and the transmission ratio between the first input stage driving gear and the first input stage driven gear is less than 1; the second transmission assembly further includes a second intermediate shaft, the second input stage gear pair includes a second input stage driving gear and a second input stage driven gear, the second input stage driving gear is disposed on the first transmission shaft and selectively connected to the engine through the second engagement / disengagement mechanism, the second input stage driven gear is disposed on the second intermediate shaft and meshes with the second input stage driving gear, and the transmission ratio between the second input stage driving gear and the second input stage driven gear is less than 1.

[0012] In some embodiments, the first input stage gear pair further includes a third input stage driving gear, which is disposed on the first input shaft and meshes with the first input stage driven gear, and the transmission ratio between the third input stage driving gear and the first input stage driven gear is greater than 1; the second input stage gear pair further includes a fourth input stage driving gear, which is disposed on the second input shaft and meshes with the second input stage driven gear, and the transmission ratio between the fourth input stage driving gear and the second input stage driven gear is greater than 1.

[0013] In some embodiments, the first output stage gear pair includes a meshing first output stage driving gear and a first output stage driven gear. The first output stage driving gear is disposed on the first intermediate shaft, and the first output stage driven gear is disposed on the first output shaft. The transmission ratio between the first output stage driving gear and the first output stage driven gear is greater than 1, and the first output shaft is used to output power. The second output stage gear pair includes a meshing second output stage driving gear and a second output stage driven gear. The second output stage driving gear is disposed on the second intermediate shaft, and the second output stage driven gear is disposed on the second output shaft. The transmission ratio between the second output stage driving gear and the second output stage driven gear is greater than 1, and the second output shaft is used to output power.

[0014] In some embodiments, in the first direction, the engine and the generator are located between the first drive motor and the second drive motor; in the second direction, the first drive motor and the second drive motor are located between the engine and the generator.

[0015] In some embodiments, the drive assembly further includes a housing, the housing having a first accommodating cavity and a second accommodating cavity spaced apart along the second direction, the first drive motor, the second transmission assembly and the second engagement / disengagement mechanism being located in the first accommodating cavity, the second drive motor, the first transmission assembly and the first engagement / disengagement mechanism being located in the second accommodating cavity, and the generator being located in either the first accommodating cavity or the second accommodating cavity.

[0016] This application also provides a vehicle, which includes a first wheel, a second wheel, and a drive assembly of any of the above embodiments, wherein the first wheel and the second transmission assembly are connected in a driving connection, and the second wheel and the first transmission assembly are connected in a driving connection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a drive assembly provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the projection of some components of a drive assembly provided in an embodiment of this application in a second direction;

[0020] Figure 3 This is a schematic diagram of the drive assembly provided in one embodiment of this application;

[0021] Figure 4 yes Figure 3 A top view of the structure;

[0022] Figure 5 yes Figure 3 A structural schematic diagram of the front view;

[0023] Figure 6 This is a schematic diagram of the output power of a drive assembly provided in one embodiment of this application. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the output power of a drive assembly provided in one embodiment of this application. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the output power of a drive assembly provided in one embodiment of this application. Figure 3 ;

[0026] Figure 9This is a schematic diagram of the output power of a drive assembly provided in one embodiment of this application. Figure 4 .

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Drive assembly; 200. First wheel; 300. Second wheel;

[0029] 11. First drive motor; 12. Second drive motor;

[0030] 21. First transmission assembly; 211. First input stage gear pair; 212. First input stage driving gear; 213. Third input stage driving gear; 214. First input stage driven gear; 215. First output stage gear pair; 216. First output stage driving gear; 217. First output stage driven gear; 218. First input shaft; 219. First intermediate shaft; 220. First output shaft;

[0031] 22. Second transmission assembly; 221. Second input stage gear pair; 222. Second input stage drive gear; 223. Fourth input stage drive gear; 224. Second input stage driven gear; 225. Second output stage gear pair; 226. Second output stage drive gear; 227. Second output stage driven gear; 228. Second input shaft; 229. Second intermediate shaft; 230. Second output shaft;

[0032] 231. Third driving gear; 232. Third driven gear;

[0033] 24. First drive shaft;

[0034] 26. First plane; 27. Second plane; 28. Third plane;

[0035] 3. Engine;

[0036] 4. Generator;

[0037] 51. First engagement / disengagement mechanism; 52. Second engagement / disengagement mechanism;

[0038] 6. Housing; 61. First accommodating cavity; 62. Second accommodating cavity; 63. Partition; 64. Third accommodating cavity; 65. First cover plate; 66. Second cover plate;

[0039] 7. Torsional shock absorber;

[0040] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0041] 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.

[0042] This application provides a drive assembly 100, referring to... Figure 1 As shown, the drive assembly 100 includes an engine 3, a generator 4, a first drive motor 11, a second drive motor 12, a first transmission assembly 21, a second transmission assembly 22, a first engagement / disengagement mechanism 51, and a second engagement / disengagement mechanism 52. The engine 3 is driven by the generator 4, the first drive motor 11 is driven by the first transmission assembly 21, and the second drive motor 12 is driven by the second transmission assembly 22. The first engagement / disengagement mechanism 51 is connected between the engine 3 and the first transmission assembly 21 and is used to control the power supply between the engine 3 and the first transmission assembly 21. The second engagement / disengagement mechanism 52 is connected between the engine 3 and the second transmission assembly 22 and is used to control the power supply between the engine 3 and the second transmission assembly 22. The first transmission assembly 21 and the second drive motor 12 are spaced apart in the first direction X and at least partially overlap in the second direction Y. The second transmission assembly 22 and the first drive motor 11 are spaced apart in the first direction X and at least partially overlap in the second direction Y. The first direction X is perpendicular to the second direction Y.

[0043] The first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52 have a separated state and an engaged state, respectively. In the separated state, the engine 3 is disconnected from the first transmission assembly 21; in the engaged state, the engine 3 is connected to the first transmission assembly 21. Similarly, in the separated state, the engine 3 is disconnected from the second transmission assembly 22; in the engaged state, the engine 3 is connected to the second transmission assembly 22. Through the arrangement of the first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52, the drive assembly 100 can achieve pure electric distributed drive independently driven by the first drive motor 11 and the second drive motor 12; or, the first drive motor 11 and the second drive motor 12 are not operating, and the engine 3 drives directly; or, the first drive motor 11, the second drive motor 12, and the engine 3 jointly drive a hybrid power system. The drive assembly 100 has multiple drive modes to meet usage requirements.

[0044] According to the embodiments of this application, the drive assembly 100 can reduce the space occupied by the drive assembly 100 in the second direction Y by distributing the first transmission component 21 and the second drive motor 12 at intervals in the first direction X and at least partially overlapping in the second direction Y, and by distributing the second transmission component 22 and the first drive motor 11 at intervals in the first direction X and at least partially overlapping in the second direction Y, thereby making the structure of the drive assembly 100 more compact.

[0045] Wherein, the second direction Y is the axial direction of the drive assembly, that is, the axial direction of the first drive motor 11 and the second drive motor 12.

[0046] Reference Figure 1 As shown, the first drive motor 11 and the second drive motor 12 are arranged sequentially in the first direction X. The output shaft of the first drive motor 11 is located to the right of the first drive motor 11, and the output shaft of the second drive motor 12 is located to the left of the second drive motor 12. The output shafts of the first drive motor 11 and the second drive motor 12 are oriented in opposite directions.

[0047] In some embodiments, refer to Figure 1 As shown, the drive assembly 100 also includes a first drive shaft 24 that is driveably connected to the output shaft of the engine 3. The first transmission assembly 21 includes a first input stage gear pair 211, a first output stage gear pair 215, a first input shaft 218, and a first output shaft 220. The first input stage gear pair 211 is connected to the first input shaft 218, and the first output stage gear pair 215 is connected to the first output shaft 220. The first input stage gear pair 211 is driveably connected to the first engagement / disengagement mechanism 51 and the output shaft of the first drive motor 11, respectively. The first output stage gear pair 215 is driveably connected to the first input stage gear pair 220. The gear pair 211 is connected to the transmission and is used to output power; the second transmission assembly 22 includes a second input stage gear pair 221, a second output stage gear pair 225, a second input shaft 228, and a second output shaft 230. The second input stage gear pair 221 is connected to the second input shaft 228, and the second output stage gear pair 225 is connected to the second output shaft 230. The second input stage gear pair 221 is connected to the output shafts of the second engagement / disengagement mechanism 52 and the second drive motor 12, respectively. The second output stage gear pair 225 is connected to the second input stage gear pair 221 and is used to output power.

[0048] In this embodiment, the drive assembly 100 is connected to the first engagement / disengagement mechanism 51 and the output shaft of the first drive motor 11 via a first input stage gear pair 211, and to the second engagement / disengagement mechanism 52 and the output shaft of the second drive motor 12 via a second input stage gear pair 221. This allows the power of the engine 3 and / or the first drive motor 11 to be transmitted from the first input stage gear pair 211 to the first output stage gear pair 215 and output, and the power of the engine 3 and / or the second drive motor 12 to be transmitted from the second input stage gear pair 221 to the second output stage gear pair 225 and output. This provides the drive assembly 100 with multiple drive modes to meet various usage requirements. Furthermore, the connection between the engine and the drive motor via a single input stage gear pair reduces the number of gear pairs required, resulting in a more compact structure for the drive assembly 100.

[0049] In some embodiments, refer to Figure 1 As shown, the first output shaft 220 and the second output shaft 230 are located on the first axis. The first input shaft 218 is coaxially connected to the output shaft of the first drive motor 11, and the second input shaft 228 is coaxially connected to the output shaft of the second drive motor 12. The first input shaft 218, the second input shaft 228 and the first axis are parallel to each other, and the first axis is located between the first input shaft 218 and the second input shaft 228 in the first direction X.

[0050] In this embodiment, the coaxial arrangement of the first output shaft 220 and the second output shaft 230 facilitates the distributed drive of the drive assembly 100 when it is positioned on the front or rear axle of the vehicle. For example, when the drive assembly 100 is positioned on the front axle of the vehicle, the first drive motor 11 can independently drive the front wheel on one side via the first output shaft 220, and the second drive motor 12 can independently drive the front wheel on the other side via the second output shaft 230. By positioning the first axis containing the first output shaft 220 and the second output shaft 230 between the first input shaft 218 and the second input shaft 228, the first drive motor 11 and the second drive motor 12 can be distributed on both sides of the output shaft (the output shafts are the first output shaft 220 and the second output shaft 230), thereby ensuring balanced force on the drive assembly 100.

[0051] In some embodiments, refer to Figure 1 and Figure 2 As shown, the first input shaft 218 and the first axis are located in the first plane 26, and the second input shaft 228 and the first axis are located in the second plane 27. The angle between the first plane 26 and the second plane 27 is α, where 30°≤α≤150°.

[0052] In the embodiments of this application, reference is made to Figure 2As shown, the drive assembly 100 also has a third direction Z, wherein the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. An included angle α exists between the first plane 26 and the second plane 27, which is equivalent to the projection of the line connecting the first input shaft 218, the second input shaft 228, and the first axis onto a plane perpendicular to the second direction Y forming a triangle. This plane is the plane containing the first direction X and the third direction Z, effectively balancing the dimensions of the drive assembly 100 in the first direction X and the third direction Z, ensuring that it does not excessively occupy space in either direction X or direction Z. This reduces the envelope size of the drive assembly 100 and improves structural compactness.

[0053] In some embodiments, refer to Figure 1 and Figure 2 As shown, the first engagement disconnection mechanism 51 and the second engagement disconnection mechanism 52 are disposed on the first drive shaft 24; the first drive shaft 24 and the first axis are located in the third plane 28, and the third plane 28 is located between the first plane 26 and the second plane 27.

[0054] In this embodiment, the third plane 28 is located between the first plane 26 and the second plane 27. This is equivalent to the first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52 being located between the first plane 26 and the second plane 27 in the first direction X. This fully utilizes the extra space at the angle between the first plane 26 and the second plane 27, ensuring that introducing two engagement / disengagement mechanisms does not add extra space and improving the structural compactness of the drive assembly 100. When the third plane 28 is located between the first plane 26 and the second plane 27, the first transmission component 21 and the second transmission component 22 have the same layout, ensuring that the transmission paths and transmission efficiencies of the two transmission components are the same.

[0055] In some embodiments, refer to Figure 2 As shown, the angle between the third plane 28 and the first plane 26 is α1, 40°≤α1≤50°; and / or, the angle between the third plane 28 and the second plane 27 is α2, 40°≤α2≤50°.

[0056] In this embodiment, when α1 and α2 are within the above range, the arrangement of the first input shaft 218, the second input shaft 228, the first output shaft 220, the second output shaft 230, and the first transmission shaft 24 makes full use of the space in the first direction X and the third direction Z, making the structure of the drive assembly 100 more compact.

[0057] It is understandable that the angle α1 between the third plane 28 and the first plane 26 is specifically set according to the usage requirements. For example, α1 can be any value among 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, and 50°, or any range between any two values. Similarly, the angle α2 between the third plane 28 and the second plane 27 is specifically set according to the usage requirements. For example, α2 can be any value among 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, and 50°, or any range between any two values.

[0058] In some embodiments, refer to Figure 1 As shown, the first transmission assembly 21 also includes a first intermediate shaft 219. The first input stage gear pair 211 includes a first input stage driving gear 212 and a first input stage driven gear 214. The first input stage driving gear 212 is mounted on the first transmission shaft 24 and selectively connected to the engine 3 through a first engagement / disengagement mechanism 51. The first input stage driven gear 214 is mounted on the first intermediate shaft 219 and meshes with the first input stage driving gear 212. The transmission ratio between the first input stage driving gear 212 and the first input stage driven gear 214 is less than [value missing]. 1; The second transmission assembly 22 also includes a second intermediate shaft 229, and the second input stage gear pair 221 includes a second input stage driving gear 222 and a second input stage driven gear 224. The second input stage driving gear 222 is disposed on the first transmission shaft 24 and selectively connected to the engine 3 through the second engagement and disengagement mechanism 52. The second input stage driven gear 224 is disposed on the second intermediate shaft 229 and meshes with the second input stage driving gear 222. The transmission ratio between the second input stage driving gear 222 and the second input stage driven gear 224 is less than 1.

[0059] In this embodiment, by setting the transmission ratio between the first input stage driving gear 212 and the first input stage driven gear 214 to be less than 1 (e.g., a transmission ratio range of 0.7-0.8), and setting the transmission ratio between the second input stage driving gear 222 and the second input stage driven gear 224 to be less than 1 (e.g., a transmission ratio range of 0.7-0.8), the rotational speed from engine 3 to the first input stage driven gear 214 and the rotational speed from engine 3 to the second input stage driven gear 224 are both increased. Because the engine 3's... The rotational speed (usually 0-6000 rpm) is less than the rotational speed of the drive motor (usually 18000-25000 rpm). Therefore, by setting this transmission ratio, the rotational speeds of the engine 3, the first drive motor 11, and the second drive motor 12 can be matched, thereby ensuring that the power of the engine 3, the first drive motor 11, and the second drive motor 12 can be smoothly coupled and output, achieving efficient coordination. At the same time, it can also ensure that the engine 3 always operates in the efficient speed range, improving economy, so that the drive assembly 100 can balance power output and energy consumption economy.

[0060] In some embodiments, refer to Figure 1 As shown, the first input stage gear pair 211 also includes a third input stage driving gear 213, which is disposed on the first input shaft 218 and meshes with the first input stage driven gear 214. The transmission ratio between the third input stage driving gear 213 and the first input stage driven gear 214 is greater than 1. The second input stage gear pair 221 also includes a fourth input stage driving gear 223, which is disposed on the second input shaft 228 and meshes with the second input stage driven gear 224. The transmission ratio between the fourth input stage driving gear 223 and the second input stage driven gear 224 is greater than 1.

[0061] In this embodiment, by setting the transmission ratio between the third input stage drive gear 213 and the first input stage driven gear 214 to be greater than 1 (e.g., the transmission ratio range is 3.5-4.5), and setting the transmission ratio between the fourth input stage drive gear 223 and the second input stage driven gear 224 to be greater than 1 (e.g., the transmission ratio range is 3.5-4.5), the rotational speeds of the first drive motor 11 to the first input stage driven gear 214 and the second drive motor 12 to the second input stage driven gear 224 are reduced, thereby enabling the first drive motor 11 and the second drive motor 12 to match the rotational speeds of the engine 3.

[0062] In some embodiments, refer to Figure 1As shown, the first output stage gear pair 215 includes a meshing first output stage driving gear 216 and a first output stage driven gear 217. The first output stage driving gear 216 is mounted on the first intermediate shaft 219, and the first output stage driven gear 217 is mounted on the first output shaft 220. The transmission ratio between the first output stage driving gear 216 and the first output stage driven gear 217 is greater than 1. The first output shaft 220 is used to output power. The second output stage gear pair 225 includes a meshing second output stage driving gear 226 and a second output stage driven gear 227. The second output stage driving gear 226 is mounted on the second intermediate shaft 229, and the second output stage driven gear 227 is mounted on the second output shaft 230. The transmission ratio between the second output stage driving gear 226 and the second output stage driven gear 227 is greater than 1. The second output shaft 230 is used to output power.

[0063] In this embodiment, by setting the transmission ratio of the first output stage driving gear 216 and the first output stage driven gear 217 to be greater than 1, and setting the transmission ratio of the second output stage driving gear 226 and the second output stage driven gear 227 to be greater than 1, the rotational speed from the first output stage driving gear 216 to the first output shaft 220 and the rotational speed from the second output stage driving gear 226 to the second output shaft 230 are reduced. The reduction in rotational speed is accompanied by an increase in torque output to the first output shaft 220 and the second output shaft 230, which ensures that the drive assembly 100 outputs sufficient power to meet the power requirements.

[0064] In some embodiments, refer to Figure 1 As shown, the radius of the first input stage driving gear 212 is larger than the radius of the first input stage driven gear 214, the radius of the third input stage driving gear 213 is smaller than the radius of the first input stage driven gear 214, and the radius of the first output stage driving gear 216 is smaller than the radius of the first output stage driven gear 217. The radius of the second input stage driving gear 222 is larger than the radius of the second input stage driven gear 224, the radius of the fourth input stage driving gear 223 is smaller than the radius of the second input stage driven gear 224, and the radius of the second output stage driving gear 226 is smaller than the radius of the second output stage driven gear 227.

[0065] In some embodiments, refer to Figures 3 to 5 As shown, in the first direction X, the engine 3 and the generator 4 are located between the first drive motor 11 and the second drive motor 12; in the second direction Y, the first drive motor 11 and the second drive motor 12 are located between the engine 3 and the generator 4.

[0066] In this embodiment of the application, by placing the engine 3 and the generator 4 between the first drive motor 11 and the second drive motor 12 in the first direction X, and placing the first drive motor 11 and the second drive motor 12 between the engine 3 and the generator 4 in the second direction Y, the engine 3, the generator 4, the first drive motor 11 and the second drive motor 12 have good compactness in the first direction X and the second direction Y, and the arrangement position is more reasonable, which can improve the structural compactness of the drive assembly 100.

[0067] In some embodiments, refer to Figures 3 to 5 As shown, on the third direction Z, the engine 3, generator 4, first drive motor 11, and second drive motor 12 are located above the first output stage driven gear 217 and the second output stage driven gear 227.

[0068] In some embodiments, refer to Figure 1 As shown, the drive assembly also includes a housing 6, which has a first accommodating cavity 61 and a second accommodating cavity 62 spaced apart along the second direction Y. The first drive motor 11, the second transmission assembly 22 and the second engagement / disengagement mechanism 52 are located in the first accommodating cavity 61, the second drive motor 12, the first transmission assembly 21 and the first engagement / disengagement mechanism 51 are located in the second accommodating cavity 62, and the generator 4 is located in either the first accommodating cavity 61 or the second accommodating cavity 62.

[0069] In this embodiment, by integrating the first drive motor 11, the second transmission assembly 22, the second engagement / disengagement mechanism 52, the second drive motor 12, the first transmission assembly 21, the first engagement / disengagement mechanism 51, and the generator 4 into the housing 6, the drive assembly 100 achieves a high degree of integration and a more compact structure. This reduces the number of components, thereby lowering the weight of the drive assembly 100 and providing the advantage of easy assembly. The housing 6 protects the aforementioned components located within it from damage caused by external impacts and also prevents foreign objects from entering the housing 6 and affecting the operation of the drive assembly 100.

[0070] In some embodiments, refer to Figure 1As shown, the housing 6 also includes a partition 63, a first cover plate 65, and a second cover plate 66. The partition 63 is disposed in the middle of the housing 6 and divides the interior of the housing 6 into a first receiving cavity 61 and a second receiving cavity 62. The first cover plate 65 is disposed on one side of the partition 63 and is used to cover the opening of the first receiving cavity 61. The second cover plate 66 is disposed on the other side of the partition 63 and is used to cover the opening of the second receiving cavity 62. During the assembly of the drive assembly, components such as the first drive motor 11 and the second transmission assembly 22 can be assembled in the first receiving cavity 61, and components such as the second drive motor 12 and the first transmission assembly 21 can be assembled in the second receiving cavity 62. Finally, the first cover plate 65 covers the opening of the first receiving cavity 61, and the second cover plate 66 covers the opening of the second receiving cavity 62.

[0071] The first input shaft 218, the first intermediate shaft 219, the first output shaft 220, the second input shaft 228, the second intermediate shaft 229, the second output shaft 230, and the first transmission shaft 24 are rotatably mounted on the housing 6. The connection method between the above shafts and the housing 6 is a conventional method, and this embodiment will not be described in detail.

[0072] In some embodiments, refer to Figure 1 As shown, the drive assembly 100 also includes a third transmission assembly located on the side of the generator 4 near the engine 3. The third transmission assembly is drively connected between the first drive shaft 24 and the generator 4. The third transmission assembly includes a third drive gear 231 and a third driven gear 232. The third drive gear 231 is connected to the first drive shaft 24, and the third drive gear 231 meshes with the third driven gear 232. The third driven gear 232 is connected to the input shaft of the generator 4.

[0073] When the engine 3 is working, it can drive the first transmission shaft 24 to rotate. The first transmission shaft 24 drives the third driving gear 231 and the third driven gear 232 to rotate in sequence. The rotation of the third driven gear 232 causes the generator 4 to generate electricity, realizing the range extension mode.

[0074] In some embodiments, refer to Figure 1 As shown, the drive assembly 100 also includes a torsional damper 7, and the output shaft of the engine 3 is connected to the first drive shaft 24 via the torsional damper 7.

[0075] In some embodiments, refer to Figure 1 As shown, the housing 6 also includes a third accommodating cavity 64, and the torsional damper 7 is disposed in the third accommodating cavity 64. In this way, the housing 6 can protect the torsional damper 7 located in the housing 6, prevent the torsional damper 7 from being damaged by external impact, and also prevent foreign objects from entering the third accommodating cavity 64 and affecting the operation of the torsional damper 7.

[0076] In the drive assembly 100 of this application embodiment, a first engagement / disengagement mechanism 51, a second engagement / disengagement mechanism 52, and a third drive gear 231 are provided on the first drive shaft 24, and the first engagement / disengagement mechanism 51, the second engagement / disengagement mechanism 52, and the third drive gear 231 are arranged sequentially in the direction away from the engine 3. The first engagement / disengagement mechanism 51 is connected to the first input stage drive gear 212 of the first transmission assembly 21, and the second engagement / disengagement mechanism 52 is connected to the second input stage drive gear 222 of the second transmission assembly 22.

[0077] When the first drive motor 11 is working, it converts electrical energy into mechanical energy that rotates the output shaft of the first drive motor 11. The output shaft of the first drive motor 11 sequentially drives the first input shaft 218, the third input stage drive gear 213, the first input stage driven gear 214, the first intermediate shaft 219, the first output stage drive gear 216, the first output stage driven gear 217, and the first output shaft 220 to rotate, and outputs power through the first output shaft 220.

[0078] When the second drive motor 12 is working, it converts electrical energy into mechanical energy to rotate the output shaft of the second drive motor 12. The output shaft of the second drive motor 12 sequentially drives the second input shaft 228, the fourth input stage drive gear 223, the second input stage driven gear 224, the second intermediate shaft 229, the second output stage drive gear 226, the second output stage driven gear 227, and the second output shaft 230 to rotate, and outputs power through the second output shaft 230.

[0079] The drive assembly 100 has multiple operating modes, which will be explained below using the application of the drive assembly 100 in a vehicle as an example.

[0080] In parking generator mode, drive assembly 100 transmits power via a reference path. Figure 6 As shown, the power output by engine 3 passes through torsional damper 7, first drive shaft 24, third drive gear 231, and third driven gear 232, and after speeding up, drives generator 4 to operate and generate electricity for range extension, thereby improving the range of drive assembly 100.

[0081] In series mode, the power output from engine 3 passes through torsional damper 7, first drive shaft 24, third drive gear 231, and third driven gear 232 to drive generator 4 to operate after speed increase. The electrical energy generated by generator 4 is output to first drive motor 11 and second drive motor 12, and then the first drive motor 11 and second drive motor 12 drive the wheels to rotate.

[0082] In pure electric distributed drive mode, the transmission route of drive assembly 100 is referenced. Figure 7As shown, the power of the first drive motor 11 is transmitted sequentially to one wheel via the first input shaft 218, the third input stage drive gear 213, the first input stage driven gear 214, the first intermediate shaft 219, the first output stage drive gear 216, the first output stage driven gear 217, and the first output shaft 220. The power of the second drive motor 12 is transmitted sequentially to the other wheel via the second input shaft 228, the fourth input stage drive gear 223, the second input stage driven gear 224, the second intermediate shaft 229, the second output stage drive gear 226, the second output stage driven gear 227, and the second output shaft 230. In the pure electric distributed drive mode, both the first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52 are in a disengaged state.

[0083] Drive assembly 100 in engine 3 direct drive mode, transmission route reference Figure 8 As shown, the power from engine 3 rotates the first drive shaft 24 via torsional damper 7. Both the first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52 are engaged. Thus, power can be transmitted sequentially to one wheel via the first engagement / disengagement mechanism 51, the first input stage drive gear 212, the first input stage driven gear 214, the first intermediate shaft 219, the first output stage drive gear 216, the first output stage driven gear 217, and the first output shaft 220. Similarly, power can be transmitted sequentially to the other wheel via the second engagement / disengagement mechanism 52, the second input stage drive gear 222, the second input stage driven gear 224, the second intermediate shaft 229, the second output stage drive gear 226, the second output stage driven gear 227, and the second output shaft 230. The direct drive mode of engine 3 is suitable for improving vehicle energy efficiency and extending vehicle range during high-speed driving, or for direct drive when the drive motor malfunctions.

[0084] In hybrid drive mode, the transmission route of drive assembly 100 is referenced. Figure 9As shown, this mode is a combination of pure electric distributed drive mode and engine 3 direct drive mode. At this time, the first engagement disconnection mechanism 51 and the second engagement disconnection mechanism 52 are both engaged. The power of engine 3 is transmitted in two ways. One power is transmitted to the first input stage driven gear 214 through the first engagement disconnection mechanism 51 and the first input stage drive gear 212. The power of the first drive motor 11 is transmitted to the first input stage driven gear 214 through the first input shaft 218 and the third input stage drive gear 213. The first input stage driven gear 214 is then transmitted to one side wheel through the first intermediate shaft 219, the first output stage drive gear 216, the first output stage driven gear 217, and the first output shaft 220. Another path transmits power through the second engagement disconnect mechanism 52, the second input stage drive gear 222 to the second input stage driven gear 224, and the second drive motor 12 transmits power through the second input shaft 228, the fourth input stage drive gear 223 to the second input stage driven gear 224, and the second input stage driven gear 224 then transmits power through the second intermediate shaft 229, the second output stage drive gear 226, the second output stage driven gear 227, and the second output shaft 230 to the other wheel. This mode is mainly used for rapid acceleration of the vehicle. When the vehicle requires differential torque, it is achieved by adjusting the output torque of the first drive motor 11 and the second drive motor 12. The hybrid drive mode can be used in normal driving conditions and can also increase the vehicle's ability to get out of trouble.

[0085] In the stationary U-turn mode, both the first engagement disconnect mechanism 51 and the second engagement disconnect mechanism 52 are in a separated state, and one of the first drive motor 11 and the second drive motor 12 rotates forward while the other rotates in reverse.

[0086] The specific structure of the first engagement / disengagement mechanism 51 and the second engagement / disengagement mechanism 52 can be selected according to the usage requirements. For example, the first engagement / disengagement mechanism 51 can be a clutch, and the second engagement / disengagement mechanism 52 can be a clutch.

[0087] In this embodiment, the drive assembly 100 can simultaneously satisfy the functions of range-extended power generation, direct drive of engine 3, pure electric distributed drive, and hybrid drive.

[0088] This application also provides a vehicle, which includes a first wheel 200, a second wheel 300, and a drive assembly of any of the above embodiments. The first wheel 200 is drive-connected to a second transmission assembly 22, and the second wheel 300 is drive-connected to a first transmission assembly 21. This vehicle has all the beneficial effects of the drive assembly 100 described above, which will not be repeated here.

[0089] The first transmission assembly 21 is located near the second wheel 300, and the second transmission assembly 22 is located near the first wheel 200. The two transmission assemblies are respectively located near the wheels to which they are connected, which can reduce the power transmission path of the first transmission assembly 21 and the second transmission assembly 22 and improve the transmission efficiency of the drive assembly 100.

[0090] The drive assembly 100 has a first direction X aligned with the vehicle's longitudinal direction, a second direction Y aligned with the vehicle's lateral direction, and a third direction Z aligned with the vehicle's vertical direction. The first wheel 200 and the second wheel 300 are either the vehicle's two front wheels or the vehicle's two rear wheels.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if a method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if a method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0095] The above are merely preferred embodiments of this application and are 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, characterized in that, It includes an engine (3), a generator (4), a first drive motor (11), a second drive motor (12), a first transmission assembly (21), a second transmission assembly (22), a first engagement / disengagement mechanism (51), and a second engagement / disengagement mechanism (52); The engine (3) is driven by the generator (4), the first drive motor (11) is driven by the first transmission assembly (21), and the second drive motor (12) is driven by the second transmission assembly (22); the first engagement disconnection mechanism (51) is connected between the engine (3) and the first transmission assembly (21) and is used to control the power connection between the engine (3) and the first transmission assembly (21); the second engagement disconnection mechanism (52) is connected between the engine (3) and the second transmission assembly (22) and is used to control the power connection between the engine (3) and the second transmission assembly (22). The first transmission component (21) and the second drive motor (12) are spaced apart in the first direction (X) and at least partially overlap in the second direction (Y); the second transmission component (22) and the first drive motor (11) are spaced apart in the first direction (X) and at least partially overlap in the second direction (Y), wherein the first direction (X) is perpendicular to the second direction (Y).

2. The drive assembly according to claim 1, characterized in that, The drive assembly further includes a first drive shaft (24) that is driven to the output shaft of the engine (3). The first transmission assembly (21) includes a first input stage gear pair (211), a first output stage gear pair (215), a first input shaft (218), and a first output shaft (220). The first input stage gear pair (211) is connected to the first input shaft (218), and the first output stage gear pair (215) is connected to the first output shaft (220). The first input stage gear pair (211) is driven to the output shafts of the first engagement / disengagement mechanism (51) and the first drive motor (11), respectively. The first output stage gear pair (215) is driven to the first input stage gear pair (211) and is used to output power. The second transmission assembly (22) includes a second input stage gear pair (221), a second output stage gear pair (225), a second input shaft (228), and a second output shaft (230). The second input stage gear pair (221) is connected to the second input shaft (228), and the second output stage gear pair (225) is connected to the second output shaft (230). The second input stage gear pair (221) is connected to the output shafts of the second engagement / disengagement mechanism (52) and the second drive motor (12) respectively. The second output stage gear pair (225) is connected to the second input stage gear pair (221) and is used to output power. The first output shaft (220) and the second output shaft (230) are located on the first axis. The first input shaft (218) is coaxially connected to the output shaft of the first drive motor (11). The second input shaft (228) is coaxially connected to the output shaft of the second drive motor (12). The first input shaft (218), the second input shaft (228) and the first axis are parallel to each other, and the first axis is located between the first input shaft (218) and the second input shaft (228) in the first direction (X).

3. The drive assembly according to claim 2, characterized in that, The first input shaft (218) and the first axis are located in the first plane (26), and the second input shaft (228) and the first axis are located in the second plane (27). The included angle between the first plane (26) and the second plane (27) is α, where 30°≤α≤150°.

4. The drive assembly according to claim 3, characterized in that, The first engagement disconnection mechanism (51) and the second engagement disconnection mechanism (52) are disposed on the first drive shaft (24); The first drive shaft (24) and the first axis are located in the third plane (28), which is located between the first plane (26) and the second plane (27).

5. The drive assembly according to claim 4, characterized in that, The angle between the third plane (28) and the first plane (26) is α1, where 40°≤α1≤50°; and / or, The angle between the third plane (28) and the second plane (27) is α2, where 40°≤α2≤50°.

6. The drive assembly according to claim 2, characterized in that, The first transmission assembly (21) further includes a first intermediate shaft (219), the first input stage gear pair (211) includes a first input stage driving gear (212) and a first input stage driven gear (214), the first input stage driving gear (212) is disposed on the first transmission shaft (24) and selectively connected to the engine (3) through the first engagement disconnection mechanism (51), the first input stage driven gear (214) is disposed on the first intermediate shaft (219) and meshes with the first input stage driving gear (212), and the transmission ratio between the first input stage driving gear (212) and the first input stage driven gear (214) is less than 1; The second transmission assembly (22) further includes a second intermediate shaft (229), and the second input stage gear pair (221) includes a second input stage driving gear (222) and a second input stage driven gear (224). The second input stage driving gear (222) is disposed on the first transmission shaft (24) and selectively connected to the engine (3) through the second engagement and disengagement mechanism (52). The second input stage driven gear (224) is disposed on the second intermediate shaft (229) and meshes with the second input stage driving gear (222). The transmission ratio between the second input stage driving gear (222) and the second input stage driven gear (224) is less than 1.

7. The drive assembly according to claim 6, characterized in that, The first input stage gear pair (211) further includes a third input stage driving gear (213), which is disposed on the first input shaft (218) and meshes with the first input stage driven gear (214). The transmission ratio between the third input stage driving gear (213) and the first input stage driven gear (214) is greater than 1. The second input stage gear pair (221) further includes a fourth input stage driving gear (223), which is disposed on the second input shaft (228) and meshes with the second input stage driven gear (224). The transmission ratio between the fourth input stage driving gear (223) and the second input stage driven gear (224) is greater than 1.

8. The drive assembly according to claim 6 or 7, characterized in that, The first output stage gear pair (215) includes a meshing first output stage driving gear (216) and a first output stage driven gear (217). The first output stage driving gear (216) is disposed on the first intermediate shaft (219), and the first output stage driven gear (217) is disposed on the first output shaft (220). The transmission ratio of the first output stage driving gear (216) and the first output stage driven gear (217) is greater than 1. The first output shaft (220) is used to output power. The second output stage gear pair (225) includes a meshing second output stage driving gear (226) and a second output stage driven gear (227). The second output stage driving gear (226) is mounted on the second intermediate shaft (229), and the second output stage driven gear (227) is mounted on the second output shaft (230). The transmission ratio of the second output stage driving gear (226) and the second output stage driven gear (227) is greater than 1. The second output shaft (230) is used to output power.

9. The drive assembly according to claim 1, characterized in that, In the first direction (X), the engine (3) and the generator (4) are located between the first drive motor (11) and the second drive motor (12); in the second direction (Y), the first drive motor (11) and the second drive motor (12) are located between the engine (3) and the generator (4).

10. The drive assembly according to claim 1, characterized in that, The drive assembly further includes a housing (6), which has a first accommodating cavity (61) and a second accommodating cavity (62) spaced apart along the second direction (Y). The first drive motor (11), the second transmission assembly (22) and the second engagement / disengagement mechanism (52) are located in the first accommodating cavity (61), and the second drive motor (12), the first transmission assembly (21) and the first engagement / disengagement mechanism (51) are located in the second accommodating cavity (62). The generator (4) is located in either the first accommodating cavity (61) or the second accommodating cavity (62).

11. A vehicle, characterized in that, It includes a first wheel (200), a second wheel (300), and a drive assembly as described in any one of claims 1-10, wherein the first wheel (200) and the second transmission assembly (22) are connected in a drive connection, and the second wheel (300) and the first transmission assembly (21) are connected in a drive connection.

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