Driving device and vehicle

Abstract

The utility model provides a driving device and a vehicle, including first driving mechanism, second driving mechanism and locking structure, first driving mechanism is connected with first output half axle to drive first output half axle to rotate, second driving mechanism is connected with second output half axle to drive second output half axle to rotate, locking structure is connected with second output half axle to drive second output half axle to rotate. The locking structure can control the first output half shaft and the second output half shaft to be combined and can control the first output half shaft and the second output half shaft to be separated, so that the driving device can achieve a distributed working mode and a centralized driving working mode, and the safety of the vehicle is improved. A second motor of the second driving mechanism is arranged on a second output half shaft in a sleeving mode, and a first motor of the first driving mechanism is arranged on one radial side of a first output half shaft, so that the distance between the first motor and the second motor in the axial direction can be reduced, namely, the distance between the first motor and the second motor in the width direction of the vehicle is reduced; and the space in the length direction is utilized, so that the device can be conveniently arranged on a compact-level vehicle model.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and mainly relates to a driving device and a vehicle. Background Art

[0002] The distributed working mode of the automobile drive system means that the drive system has at least two power sources, and the two power sources can drive the two wheels respectively to control the movement of the vehicle, reduce the turning radius of the vehicle, or rely on independent drive devices to balance and stabilize the vehicle posture and maintain the balance of the vehicle when encountering extreme safety accidents such as tire blowouts and slippery roads. The existing common drive system with a distributed working mode is a pure electric distributed drive system, which drives the movement of two wheels by setting two drive motors. However, the two drive motors of the existing pure electric distributed drive system are set corresponding to the two wheels, resulting in a larger size. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a drive device and a vehicle to solve the problem of large volume of the existing drive system with a distributed working mode.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A driving device comprises a first output half shaft, a second output half shaft, a first driving mechanism, a second driving mechanism and a locking structure, wherein the first output half shaft is coaxially arranged with the second output half shaft, the first output half shaft is used to be connected to a first wheel end, and the second output half shaft is used to be connected to a second wheel end; the first driving mechanism comprises a first motor and a first reduction structure, the first motor is arranged on a radial side of the first output half shaft, the input end of the first reduction structure is connected to the first motor, and the output end of the first reduction structure is connected to the first output half shaft; the second driving mechanism comprises a second motor and a second reduction structure, the input end of the second reduction structure is connected to the second motor, the second motor is sleeved on the second output half shaft, and the output end of the second reduction structure is connected to the second output half shaft; the locking structure is connected to the first output half shaft and the second output half shaft, and the locking structure can control the first output half shaft to be combined with the second output half shaft, and can control the first output half shaft to be separated from the second output half shaft.

[0006] In some embodiments of the present application, at least one of the first motor and the first reduction structure partially overlaps with the locking structure in the axial direction of the first output half shaft.

[0007] In some schemes of the present application, the first reduction structure includes a first intermediate shaft, a first gear, a second gear, a third gear and a fourth gear, the first intermediate shaft is arranged parallel to the first output half shaft, the first gear and the second gear are connected to the first intermediate shaft, the third gear is connected to the first motor and meshes with the first gear, the fourth gear is connected to the first output half shaft and meshes with the second gear; the first gear is located on the side of the second gear close to the second reduction structure, and the first gear is coplanar with the locking structure.

[0008] In some embodiments of the present application, the first motor is arranged parallel to the first output half-shaft, the second motor is sleeved on the second output half-shaft and can rotate relative to the second output half-shaft; and / or the first motor and the second motor at least partially overlap in the axial direction of the first output half-shaft.

[0009] In some schemes of the present application, the second reduction structure includes a second intermediate shaft, a fifth gear, a sixth gear, a seventh gear and an eighth gear, the fifth gear and the sixth gear are connected to the second intermediate shaft, the seventh gear is connected to the second motor, the eighth gear is connected to the second output half shaft, the fifth gear is meshed with the seventh gear, and the sixth gear is meshed with the eighth gear; the second intermediate shaft is sleeved with the first intermediate shaft, and the second intermediate shaft can rotate relative to the first intermediate shaft; the diameter of the fifth gear is larger than the diameter of the seventh gear, and the diameter of the sixth gear is larger than the diameter of the eighth gear.

[0010] In some schemes of the present application, the second reduction structure includes a first sun gear, a first planetary gear, a first ring gear and a first planetary carrier, the first sun gear is connected to the second motor, the first ring gear is arranged on the circumferential outside of the first sun gear, the first planetary gear is rotatably connected to the first planetary carrier and meshes with the first sun gear and the first ring gear, and one of the first planetary carrier and the first ring gear is connected to the second output half shaft.

[0011] In some schemes of the present application, the first planetary gear includes a ninth gear and a tenth gear, the ninth gear is meshed with the first sun gear, the tenth gear is fixedly connected to the ninth gear, and the tenth gear is meshed with the first ring gear; the tenth gear and the ninth gear are arranged side by side; the diameter of the ninth gear is larger than the diameter of the tenth gear.

[0012] In some embodiments of the present application, the drive device also includes a range extender, which includes an engine and a generator. The generator is connected to the engine and can generate electricity when driven by the engine; a power battery is electrically connected to the generator, the first motor, and the second motor.

[0013] In some embodiments of the present application, the range extender further includes a speed increasing mechanism, which connects the engine and the generator. When the engine drives the generator to rotate, the rotation speed of the generator is greater than the rotation speed of the engine.

[0014] In some embodiments of the present application, the speed increasing mechanism includes a first transmission gear and a second transmission gear, the first transmission gear is connected to the rotating shaft of the engine, the second transmission gear is connected to the rotating shaft of the generator, the first transmission gear is meshed with the second transmission gear, and the diameter of the first transmission gear is larger than the diameter meshed with the second transmission gear; or the speed increasing mechanism includes a second sun gear, a second planetary gear, a second ring gear and a second planet carrier, the second sun gear is connected to the generator, the second ring gear is arranged on the circumferential outside of the second sun gear, the second planetary gear is rotatably connected to the second planet carrier and meshed with the second sun gear and the second ring gear, and one of the second planet carrier and the second ring gear is connected to the engine.

[0015] A vehicle comprises a vehicle body, a first wheel end, a second wheel end and a driving device, wherein the driving device is mounted on the vehicle body, the first wheel end is connected to the first output half shaft, and the second wheel end is connected to the second output half shaft.

[0016] Beneficial effects: The driving device of the present application includes a first driving mechanism, a second driving mechanism and a locking structure. The first driving mechanism is connected to the first output semi-shaft to drive the first output semi-shaft to rotate, and the second driving mechanism is connected to the second output semi-shaft to drive the second output semi-shaft to rotate. The locking structure can control the first output semi-shaft to combine with the second output semi-shaft, and can control the first output semi-shaft to separate from the second output semi-shaft, so that the driving device can realize a distributed working mode and a centralized driving working mode, thereby improving the safety of the vehicle. Among them, the second motor of the second driving mechanism is sleeved on the second output semi-shaft, and the first motor of the first driving mechanism is arranged on the radial side of the first output semi-shaft, so that the distance between the first motor and the second motor in the axial direction can be reduced, that is, the spacing between the first motor and the second motor in the width direction of the vehicle is reduced, and the space in the length direction is utilized, which is convenient for arrangement on a compact vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of embodiment 1.

[0018] Figure 2 It is a structural diagram of the second embodiment.

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of the second deceleration structure.

[0020] Figure 4 It is a structural schematic diagram of a speed increasing mechanism in practice.

[0021] Main component symbol description: 1-first drive mechanism; 11-first motor; 12-first reduction structure; 121-first intermediate shaft; 122-first gear; 123-second gear; 124-third gear; 125-fourth gear; 2-second drive mechanism; 21-second motor; 22-second reduction structure; 221-second intermediate shaft; 222-fifth gear; 223-sixth gear; 224-seventh gear; 225-eighth gear; 226-first sun gear; 227-first planetary gear; 22 8-first ring gear; 229-first planetary carrier; 2271-ninth gear; 2272-tenth gear; 3-locking structure; 4-range extender; 41-engine; 42-generator; 43-speed increasing mechanism; 431-first transmission gear; 432-second transmission gear; 433-second sun gear; 434-second planetary gear; 435-second ring gear; 436-second planetary carrier; 44-power battery; 51-first output half shaft; 52-second output half shaft; 61-first wheel end; 62-second wheel end. DETAILED DESCRIPTION

[0022] The utility model provides a driving device and a vehicle. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] See also Figure 1 and Figure 2 The vehicle of the present application includes a vehicle body, a first wheel end 61, a second wheel end 62 and a driving device, which is installed on the vehicle body. The driving device includes a first output half shaft 51, a second output half shaft 52, a first driving mechanism 1 and a second driving mechanism 2. The first output half shaft 51 and the second output half shaft 52 are coaxially arranged, the first wheel end 61 is connected to the first output half shaft 51, the second wheel end 62 is connected to the second output half shaft 52, and the first driving mechanism 1 and the second driving mechanism 2 can drive the first output half shaft 51 and the second output half shaft 52 to rotate, thereby realizing the movement of the vehicle.

[0026] The first drive mechanism 1 includes a first motor 11 and a first reduction structure 12, the input end of the first reduction structure 12 is connected to the first motor 11, and the output end of the first reduction structure 12 is connected to the first output half shaft 51. Therefore, the first motor 11 increases the torque through the first reduction structure 12, thereby increasing the torque at the first wheel end 61. The second drive mechanism 2 includes a second motor 21 and a second reduction structure 22, the input end of the second reduction structure 22 is connected to the second motor 21, and the output end of the second reduction structure 22 is connected to the second output half shaft 52. Therefore, the second motor 21 increases the torque through the second reduction structure 22, thereby increasing the torque at the second wheel end 62.

[0027] The driving device further includes a locking structure 3, which is connected to the first output half shaft 51 and the second output half shaft 52. The locking structure 3 can control the first output half shaft 51 to be combined with the second output half shaft 52, and can control the first output half shaft 51 to be separated from the second output half shaft 52. Therefore, through the control of the locking structure 3, a pure electric distributed working mode and a centralized driving working mode can be realized. The centralized driving working mode refers to that one or both of the first motor 11 and the second motor 21 simultaneously drive the first wheel end 61 and the second wheel end 62 to rotate.

[0028] When the drive device is in the pure electric distributed working mode, the locking structure 3 controls the first output half shaft 51 to separate from the second output half shaft 52, and the first motor 11 drives the first wheel end 61 to rotate through the first reduction structure 12, and the second motor 21 drives the second wheel end 62 to rotate through the second reduction structure 22, so that the turning radius of the vehicle can be reduced by controlling the rotation speed of the first motor 11 and the second motor 21, or when one of its wheels slips or has a flat tire, the control of the first motor 11 and the second motor 21 helps to coordinate the control of wheel-end torque vector control and wheel power under various unstable conditions, so that the vehicle can maintain balance, thereby making the vehicle have better maneuverability, that is, the whole vehicle has a smaller turning radius or track following accuracy, and at the same time has a faster response to emergency situations, thereby improving driving safety.

[0029] When the drive device is in the centralized drive working mode, the locking structure 3 controls the first output half shaft 51 to be combined with the second output half shaft 52, and the power between the first output half shaft 51 and the second output half shaft 52 can be transmitted to each other. Therefore, the first wheel end 61 and the second wheel end 62 can be driven to rotate by the first motor 11 and the second motor 21 together, or the first wheel end 61 and the second wheel end 62 can be driven to rotate by one of the first motor 11 and the second motor 21, so as to avoid the vehicle being unable to drive when one of the driving mechanisms (including the motor and the reduction structure) fails, so that the vehicle has higher safety redundancy.

[0030] In one embodiment, the locking structure 3 is a clutch or a synchronizer, and the clutch type can be a friction clutch, a dog clutch, or an electromagnetic clutch. The following takes the locking structure 3 as a clutch as an example to describe the driving device of the present application in detail.

[0031] Specifically, through the control of the locking structure 3, the drive device can switch between the pure electric distributed drive mode, the single motor escape mode 1, the single motor escape mode 2 and the dual motor escape mode, so that the whole vehicle has higher safety redundancy.

[0032] When the drive device is in the pure electric distributed drive mode, the clutch is disengaged, the first motor 11 and the second motor 21 are working, the first motor 11 drives the first wheel end 61 to rotate through the first reduction structure 12, and the second motor 21 drives the second wheel end 62 to rotate through the second reduction structure 22.

[0033] When the driving device is in the single-motor escape mode 1, the clutch is engaged, the first motor 11 is working, the second motor 21 is not working, and the first motor 11 drives the first wheel end 61 and the second wheel end 62 to rotate through the first reduction structure 12.

[0034] When the driving device is in the single-motor escape mode 2, the clutch is engaged, the second motor 21 is working, the first motor 11 is not working, and the second motor 21 drives the first wheel end 61 and the second wheel end 62 to rotate through the second reduction structure 22.

[0035] When the driving device is in the dual-motor escape mode, the clutch is engaged, the first motor 11 and the second motor 21 are in operation, and the first motor 11 and the second motor 21 jointly drive the first wheel end 61 and the second wheel end 62 to rotate.

[0036] When the first wheel end 61 and the second wheel end 62 are in the follow-up state, the first wheel end 61 and the second wheel end 62 can drive one or both of the first motor 11 and the second motor 21 to generate electricity and realize energy recovery. For example, when the vehicle is in a gliding state, or the drive device is used in a four-wheel drive vehicle and the drive device does not need to output power.

[0037] Among them, the axial direction of the first output half shaft 51 corresponds to the width direction of the vehicle, and the locking structure 3 and the first drive mechanism 1 at least partially overlap in the axial direction of the first output half shaft 51, thereby shortening the size of the drive device in the axial direction of the first output half shaft 51, thereby reducing the volume of the drive device.

[0038] The first motor 11 is arranged in parallel with the first output half shaft 51, that is, the first motor 11 is arranged on the radial side of the first output half shaft 51, and the second motor 21 is sleeved on the second output half shaft 52, so that the first motor 11 and the second motor 21 are distributed on different shaft systems, thereby making the volume of the drive device between the first wheel end 61 and the second wheel end 62 smaller, thereby making it more convenient to arrange the drive device on a compact vehicle model.

[0039] In one embodiment, the first motor 11 and the second motor 21 at least partially overlap in the axial direction, so that the axial dimension of the driving device on the first output half shaft 51 is further reduced.

[0040] In one embodiment, the first output half shaft 51 and the second output half shaft 52 are sleeve-connected, so that the structure of the drive device for supporting the first output half shaft 51 and the second output half shaft 52 can be reduced, thereby reducing the axial size of the drive device in the first output half shaft 51. In other embodiments, the first output half shaft 51 and the second output half shaft 52 can also be spaced apart in the axial direction.

[0041] In one embodiment, the first reduction structure 12 includes a first intermediate shaft 121, a first gear 122, a second gear 123, a third gear 124 and a fourth gear 125. The first intermediate shaft 121 is arranged parallel to the first output half shaft 51. The first gear 122 and the second gear 123 are connected to the first intermediate shaft 121. The third gear 124 is connected to the first motor 11 and meshes with the first gear 122. The fourth gear 125 is connected to the first output half shaft 51 and meshes with the second gear 123. The diameter of the third gear 124 is smaller than the diameter of the fourth gear 125, so that reduction transmission is achieved between the first motor 11 and the first output half shaft 51.

[0042] In one embodiment, the diameter of the third gear 124 is smaller than that of the first gear 122 , and the diameter of the second gear 123 is smaller than that of the fourth gear 125 , so that a two-stage reduction transmission is formed between the first motor 11 and the first output half shaft 51 .

[0043] The first gear 122 is located on a side of the second gear 123 close to the second reduction structure 22 , and the first gear 122 is coplanar with the locking structure 3 , thereby shortening the axial dimension of the drive device of the first output half shaft 51 .

[0044] Embodiment 1:

[0045] See also Figure 1 The second reduction structure 22 includes a second intermediate shaft 221, a fifth gear 222, a sixth gear 223, a seventh gear 224 and an eighth gear 225. The fifth gear 222 and the sixth gear 223 are connected to the second intermediate shaft 221, the seventh gear 224 is connected to the second motor 21, the eighth gear 225 is connected to the second output half shaft 52, the fifth gear 222 is meshed with the seventh gear 224, the sixth gear 223 is meshed with the eighth gear 225, the diameter of the seventh gear 224 is smaller than the diameter of the fifth gear 222, and the diameter of the eighth gear 225 is smaller than the diameter of the sixth gear 223, so that a two-stage reduction transmission is formed between the second motor 21 and the second output half shaft 52.

[0046] Among them, the second intermediate shaft 221 can rotate relative to the first intermediate shaft 121. Specifically, the second intermediate shaft 221 is sleeved on the first intermediate shaft 121, or the first intermediate shaft 121 is sleeved on the second intermediate shaft 221, so as to reduce the structure of the drive device for supporting the first intermediate shaft 121 and the second intermediate shaft 221, thereby making the structure more compact and being able to reduce the axial size of the drive device on the first output half shaft 51.

[0047] Embodiment 2:

[0048] See also Figure 2 and Figure 3The second reduction mechanism 22 includes a first sun gear 226, a first planetary gear 227, a first ring gear 228 and a first planet carrier 229. The first sun gear 226 is connected to the second motor 21. The first ring gear 228 is arranged on the circumferential outer side of the first sun gear 226. The first planetary gear 227 is rotatably connected to the first planet carrier 229 and meshes with the first sun gear 226 and the first ring gear 228. The first planet carrier 229 is connected to the second output axle 52. The first ring gear 228 is fixed, so that the power of the second motor 21 is transmitted to the second output axle 52 to achieve deceleration and torque increase. The first sun gear 226, the first planetary gear 227, the first ring gear 228 and the first planet carrier 229 constitute a planetary transmission mechanism. The planetary transmission mechanism has the advantages of compact structure and small size, thereby reducing the size of the drive device in the vehicle width direction.

[0049] In one embodiment, the first planetary gear 227 includes a ninth gear 2271 and a tenth gear 2272, the tenth gear 2272 is coaxially arranged with the ninth gear 2271, the ninth gear 2271 is meshed with the first sun gear 226, the tenth gear 2272 is fixedly connected with the ninth gear 2271, and the tenth gear 2272 is meshed with the first ring gear 228. The diameter of the ninth gear 2271 is greater than the diameter of the tenth gear 2272, so that the radial size of the first ring gear 228 can be reduced, thereby reducing the overall radial size of the second reduction mechanism 22.

[0050] In one embodiment, the first sun gear 226 is connected to the second motor 21, the first ring gear 228 is connected to the second output half shaft 52, and the first planetary carrier 229 is fixed. When the power of the second motor 21 is transmitted to the second output half shaft 52, deceleration and torque increase can also be achieved.

[0051] See also Figure 1 and Figure 2 In any of the above embodiments, the driving device also includes a range extender 4 and a power battery 44. The range extender 4 includes an engine 41 and a generator 42. The generator 42 is connected to the engine 41 and can generate electricity under the drive of the engine 41. The power battery 44 is electrically connected to the generator 42, the first motor 11 and the second motor 21, so that the electricity generated by the generator 42 can be stored in the power battery 44, or used for the operation of the first motor 11 and the second motor 21, thereby improving the vehicle's endurance.

[0052] Among them, the engine 41 can drive the generator 42 to generate electricity under the pure electric distributed drive mode, forming an extended-range distributed drive mode; the engine 41 can also drive the generator 42 to generate electricity in single-motor escape mode 1, single-motor escape mode 2 and dual-motor escape mode; the engine 41 can also drive the generator 42 to generate electricity when the vehicle is in a parked state, realizing a parking power generation mode.

[0053] The range extender 4 also includes a speed increasing mechanism 43, which connects the engine 41 and the generator 42. When the engine 41 drives the generator 42 to rotate, the speed of the generator 42 is increased by the speed increasing mechanism 43, so that the speed of the generator 42 is greater than the speed of the engine 41, and the rotor of the generator 42 cuts the magnetic lines of force in the stator magnetic field at a faster rate, thereby increasing the power generation of the generator 42. When the power generation of the generator 42 is constant, the speed increasing mechanism 43 can be used to reduce the size of the generator 42, thereby reducing the resistance torque when the engine 41 drives the generator 42 to generate electricity.

[0054] See also Figure 1 and Figure 2 In one embodiment, the speed increasing mechanism 43 includes a first transmission gear 431 and a second transmission gear 432. The first transmission gear 431 is connected to the rotating shaft of the engine 41, and the second transmission gear 432 is connected to the rotating shaft of the generator 42. The first transmission gear 431 is meshed with the second transmission gear 432, and the diameter of the first transmission gear 431 is larger than the diameter meshed with the second transmission gear 432, so that when the engine 41 drives the generator 42 to rotate, the power of the engine 41 passes through the first transmission gear 431 and the second transmission gear 432 to achieve speed increase.

[0055] See also Figure 4 In one embodiment, the speed increasing mechanism 43 includes a second sun gear 433, a second planetary gear 434, a second ring gear 435 and a second planet carrier 436. The second sun gear 433 is connected to the generator 42. The second ring gear 435 is arranged on the circumferential outer side of the second sun gear 433. The second planetary gear 434 is rotatably connected to the second planet carrier 436 and meshes with the second sun gear 433 and the second ring gear 435. The second planet carrier 436 is connected to the engine 41, and the second ring gear 435 is fixed, so that when the power of the engine 41 is transmitted to the generator 42 through the speed increasing mechanism 43, the speed of the generator 42 is increased. Among them, the second sun gear 433, the second planetary gear 434, the second ring gear 435 and the second planet carrier 436 constitute a planetary transmission mechanism, which has the advantages of small size and compact structure, so that the overall structure volume of the drive device is smaller.

[0056] In one embodiment, the second sun gear 433 is connected to the generator 42 , the second ring gear 435 is connected to the engine 41 , and the second planet carrier 436 is fixed, so that when the engine 41 drives the generator 42 to rotate, the rotation speed of the generator 42 is increased.

[0057] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A driving device, characterized in that: include: a first output half shaft and a second output half shaft, wherein the first output half shaft is coaxially arranged with the second output half shaft, the first output half shaft is used to connect to the first wheel end, and the second output half shaft is used to connect to the second wheel end; A first driving mechanism includes a first motor and a first reduction structure, wherein the first motor is arranged on one radial side of the first output half shaft, an input end of the first reduction structure is connected to the first motor, and an output end of the first reduction structure is connected to the first output half shaft; The second driving mechanism comprises a second motor and a second reduction structure, wherein the second motor is sleeved on the second output half shaft, the input end of the second reduction structure is connected to the second motor, and the output end of the second reduction structure is connected to the second output half shaft; A locking structure is connected to the first output half shaft and the second output half shaft, and the locking structure can control the first output half shaft to be combined with the second output half shaft, and can control the first output half shaft to be separated from the second output half shaft.

2. The driving device according to claim 1, characterized in that: At least one of the first motor and the first reduction structure partially overlaps with the locking structure in the axial direction of the first output half shaft.

3. The driving device according to claim 2, characterized in that: The first reduction structure includes a first intermediate shaft, a first gear, a second gear, a third gear and a fourth gear, the first intermediate shaft is arranged in parallel with the first output half shaft, the first gear and the second gear are connected to the first intermediate shaft, the third gear is connected to the first motor and meshes with the first gear, and the fourth gear is connected to the first output half shaft and meshes with the second gear; The first gear is located on a side of the second gear close to the second reduction structure, and the first gear is coplanar with the locking structure.

4. The driving device according to claim 3, characterized in that: The first motor and the second motor at least partially overlap in the axial direction of the first output half shaft.

5. The driving device according to claim 3 or 4, characterized in that: The second reduction mechanism comprises a second intermediate shaft, a fifth gear, a sixth gear, a seventh gear and an eighth gear, wherein the fifth gear and the sixth gear are connected to the second intermediate shaft, the seventh gear is connected to the second motor, the eighth gear is connected to the second output half shaft, the fifth gear is meshed with the seventh gear, and the sixth gear is meshed with the eighth gear; The second intermediate shaft is sleeved with the first intermediate shaft, and the second intermediate shaft can rotate relative to the first intermediate shaft; The diameter of the fifth gear is greater than the diameter of the seventh gear, and the diameter of the sixth gear is greater than the diameter of the eighth gear.

6. The driving device according to any one of claims 1 to 4, characterized in that: The second reduction structure includes a first sun gear, a first planetary gear, a first ring gear and a first planetary carrier. The first sun gear is connected to the second motor. The first ring gear is arranged on the circumferential outside of the first sun gear. The first planetary gear is rotatably connected to the first planetary carrier and meshes with the first sun gear and the first ring gear. One of the first planetary carrier and the first ring gear is connected to the second output half shaft.

7. The driving device according to claim 6, characterized in that: The first planetary gear includes a ninth gear and a tenth gear, the ninth gear is meshed with the first sun gear, the tenth gear is fixedly connected with the ninth gear, and the tenth gear is meshed with the first ring gear; The tenth gear is arranged side by side with the ninth gear; A diameter of the ninth gear is greater than a diameter of the tenth gear.

8. The driving device according to claim 1, characterized in that: The driving device further comprises: A range extender, comprising an engine and a generator, wherein the generator is connected to the engine and is capable of generating electricity when driven by the engine; A power battery is electrically connected to the generator, the first motor and the second motor.

9. The driving device according to claim 8, characterized in that: The range extender further includes a speed increasing mechanism, which connects the engine and the generator. When the engine drives the generator to rotate, the rotation speed of the generator is greater than the rotation speed of the engine.

10. The driving device according to claim 9, characterized in that: The speed increasing mechanism comprises a first transmission gear and a second transmission gear, the first transmission gear is connected to the rotating shaft of the engine, the second transmission gear is connected to the rotating shaft of the generator, the first transmission gear is meshed with the second transmission gear, and the diameter of the first transmission gear is larger than the diameter meshed with the second transmission gear; or The speed increasing mechanism includes a second sun gear, a second planetary gear, a second ring gear and a second planet carrier. The second sun gear is connected to the generator. The second ring gear is arranged on the circumferential outside of the second sun gear. The second planetary gear is rotatably connected to the second planet carrier and meshes with the second sun gear and the second ring gear. One of the second planet carrier and the second ring gear is connected to the engine.

11. A vehicle, characterized in that: It comprises a vehicle body, a first wheel end, a second wheel end and a driving device as described in any one of claims 1 to 10, wherein the driving device is mounted on the vehicle body, the first wheel end is connected to the first output half shaft, and the second wheel end is connected to the second output half shaft.

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