Dual-motor driving assembly and vehicle with same

Abstract

The utility model discloses a dual-motor drive assembly and a vehicle with the same, the dual-motor drive assembly comprises two motors and two planetary speed reduction structures, the two motors and the two planetary speed reduction structures are in transmission connection in a one-to-one correspondence mode, the two planetary speed reduction structures are respectively in transmission connection with two wheels, the motor comprises a stator and a rotor, the rotor is rotatably arranged on the radial inner side of the stator, and the planetary speed reduction structure is arranged on the radial inner side of the rotor and is in transmission connection with the rotor. According to the double-motor driving assembly, the planetary speed reduction structure is arranged on the radial inner side of the rotor, the axial size can be reduced, the structure is compact, the occupied space is small, the integration degree is high, and the whole vehicle is easy to arrange.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle transmission, in particular to a dual-motor drive assembly and a vehicle having the same. Background Art

[0002] With the development of vehicle technology, electric vehicles are becoming more and more popular. For example, the four-wheel independent drive system of an electric vehicle is composed of four motors that independently drive the four wheels of the vehicle. The torque and speed of the four wheels can be precisely controlled independently of each other, which brings a series of advantages, such as achieving a smaller turning radius, assisting the ESP function, assisting the steering function, assisting the braking function, and so on. Generally, a wheel-side drive scheme is often adopted in the four-wheel independent drive system. In the existing wheel-side drive scheme, the left and right two drive assemblies often form a single entity, occupying a large space and having a high cost. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a dual-motor drive assembly, which has a compact structure, small occupied space, high integration degree, and is easy to be arranged on the whole vehicle.

[0004] The dual-motor drive assembly according to an embodiment of the utility model is used for a vehicle, and the vehicle includes two wheels arranged on both sides of the vehicle body. The dual-motor drive assembly includes: two motors and two planetary reduction structures. The two motors and the two planetary reduction structures are in one-to-one corresponding transmission connection, and the two planetary reduction structures are respectively in transmission connection with the two wheels. Wherein, the motor includes: a stator and a rotor. The rotor is rotatably arranged on the radial inner side of the stator, and the planetary reduction structure is arranged on the radial inner side of the rotor and is in transmission connection with the rotor.

[0005] According to the dual-motor drive assembly of the embodiment of the utility model, by arranging the planetary reduction structure on the radial inner side of the rotor, the axial dimension can be reduced, and the structure is compact, the occupied space is small, the integration degree is high, and it is easy to be arranged on the whole vehicle.

[0006] In addition, according to the dual-motor drive assembly of the utility model, the following additional technical features may also be provided:

[0007] In some embodiments of the utility model, the dual-motor drive assembly further includes: an electric drive assembly housing. The two motors and the two planetary reduction structures are both installed in the electric drive assembly housing.

[0008] In some embodiments of the present utility model, the planetary reduction structure includes: a sun gear, the sun gear is drivingly connected to the rotor; a planet carrier, the planet carrier is installed in the electric drive assembly housing; an inner planet gear and an outer planet gear, both the inner planet gear and the outer planet gear are installed on the planet carrier, the inner planet gear is drivingly connected between the outer planet gear and the sun gear, the outer planet gear is drivingly connected to the wheel, wherein the sun gear, the inner planet gear and the outer planet gear are all arranged in the radial direction.

[0009] In some embodiments of the present utility model, a motor shaft is connected inside the rotor, the rotor is drivingly connected to the sun gear through the motor shaft, wherein the rotor, the motor shaft and the sun gear are coaxially arranged.

[0010] In some embodiments of the present utility model, the planetary reduction structure includes an outer planet gear, and the dual-motor drive assembly further includes: a first reduction structure, the first reduction structure is drivingly connected between the planetary reduction structure and the wheel, the first reduction structure includes: a ring gear, the ring gear is drivingly connected to the outer planet gear; a first gear, the first gear is coaxially connected to the ring gear, the outer diameter of the first gear is smaller than the inner diameter of the ring gear, and the first gear is drivingly connected to the wheel.

[0011] In some embodiments of the present utility model, the dual-motor drive assembly further includes: a second reduction structure, the second reduction structure is drivingly connected between the first reduction structure and the wheel, the second reduction structure includes: a second gear, the second gear is coaxially connected to the wheel, and the second gear is drivingly connected to the first gear, wherein the outer diameter of the second gear is larger than the outer diameter of the first gear.

[0012] In some embodiments of the present utility model, the dual-motor drive assembly further includes: a third reduction structure, the third reduction structure is drivingly connected between the first reduction structure and the wheel, the third reduction structure includes: a third gear, the third gear is drivingly connected to the first gear, wherein the outer diameter of the third gear is larger than the outer diameter of the first gear; a fourth gear, the fourth gear is coaxially connected to the third gear, the outer diameter of the fourth gear is smaller than the outer diameter of the third gear, and the fourth gear is drivingly connected to the wheel.

[0013] In some embodiments of the present utility model, the dual-motor drive assembly further includes: a fourth reduction structure, the fourth reduction structure is drivingly connected between the third reduction structure and the wheel, the fourth reduction structure includes: a fifth gear, the fifth gear is coaxially connected to the wheel, and the fifth gear is drivingly connected to the fourth gear, wherein the outer diameter of the fifth gear is larger than the outer diameter of the fourth gear.

[0014] In some embodiments of the present utility model, the fifth gear, the wheel and the rotor are coaxially arranged.

[0015] The present utility model also provides a vehicle with the dual-motor drive assembly of the above embodiments.

[0016] For the vehicle according to the embodiments of the present utility model, by providing the dual-motor drive assembly of the above embodiments, and arranging the planetary reduction structure on the radial inner side of the rotor, the axial dimension can be reduced, and the structure is compact, occupies a small space, has a high integration degree, and is easy to be arranged on the whole vehicle.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic diagram of a dual-motor drive assembly according to the first embodiment of the present utility model.

[0020] Figure 2 is a schematic diagram of a dual-motor drive assembly according to the second embodiment of the present utility model.

[0021] Figure 3 is a schematic diagram of a dual-motor drive assembly according to the third embodiment of the present utility model.

[0022] Reference Signs:

[0023] Dual-motor drive assembly 100, motor controller 200,

[0024] Stator 11, rotor 12, motor shaft 13,

[0025] Planetary reduction structure 2, sun gear 21, planet carrier 22, inner planet gear 23, outer planet gear 24,

[0026] Toothed ring 31, first gear 32, second gear 41, third gear 51, fourth gear 52, fifth gear 61,

[0027] Intermediate shaft 71, first drive shaft 72, second drive shaft 73,

[0028] Electric drive assembly housing 10, wheel 20. Detailed Embodiments

[0029] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] With the development of vehicle technology, electric vehicles are becoming more and more popular. For example, in the four-wheel independent drive system of an electric vehicle, four motors independently drive the four wheels of the vehicle, and the torque and speed of the four wheels can be precisely controlled independently of each other, which brings a series of advantages, such as achieving a smaller turning radius, assisting the ESP function, assisting the steering function, assisting the braking function, and so on. Usually, a wheel-side drive scheme is often adopted in the four-wheel independent drive system. In the existing wheel-side drive scheme, the left and right two sets of drive assemblies are often self-contained, occupying a large space and having a high cost.

[0033] This application proposes a dual-motor drive assembly, which is structurally compact, occupies a small space, has a high degree of integration, and is easy to be arranged in a whole vehicle.

[0034] The following refers to Figures 1 - 3 Describe the dual-motor drive assembly 100 according to the embodiments of the present utility model.

[0035] AsFigures 1 - 3 As shown, the dual-motor drive assembly 100 according to an embodiment of the present invention can be used in a vehicle, which includes two wheels 20 arranged on both sides of the vehicle body, such as two front wheels or two rear wheels. The dual-motor drive assembly 100 includes two motors and two planetary reduction structures 2. The two motors and the two planetary reduction structures 2 are in one-to-one transmission connection, and the two planetary reduction structures 2 are respectively in transmission connection with the two wheels 20. Figures 1 to 3 In the figure, the planetary reduction structure 2 is framed by a dotted line.

[0036] As Figures 1 - 3 shown, the two motors and the two planetary reduction structures 2 are symmetrically arranged. For the convenience of description, the two motors are respectively the first motor and the second motor. Exemplarily, the first motor and the second motor are coaxially arranged. The two planetary reduction structures 2 are respectively the first planetary reduction structure and the second planetary reduction structure. The first motor is in transmission connection with the first planetary reduction structure, and the second motor is in transmission connection with the second planetary reduction structure. Exemplarily, one motor controller 200 can be provided, and one motor controller 200 can control the first motor and the second motor at the same time. Exemplarily, two motor controllers 200 can be provided, and the two motor controllers 200 respectively control the first motor and the second motor.

[0037] In the above example, the first motor and the second motor drive respectively. The drive systems between the first motor and the first wheel and between the second motor and the second wheel are independent of each other and symmetrically arranged, and can realize functions such as differential, differential lock and vector control. In addition, a single motor drives a single wheel 20, and the motor torque and speed are independently controllable and have a fast response. By coordinating the control of each motor, the vehicle stability is improved and the control is more precise.

[0038] Further, the motor includes: a stator 11 and a rotor 12. The rotor 12 is rotatably arranged on the radial inner side of the stator 11. The planetary reduction structure 2 is arranged on the radial inner side of the rotor 12 and is in transmission connection with the rotor 12.

[0039] As Figure 1 shown, the stator 11 and the rotor 12 are coaxially arranged. The rotor 12 is arranged inside the stator 11, and the planetary reduction structure 2 is arranged inside the rotor 12. Thus, the axial dimension can be reduced, and the structure is compact, occupies a small space, has a high integration degree, and is easy to be arranged in the whole vehicle.

[0040] For the dual-motor drive assembly 100 according to an embodiment of the present invention, by arranging the planetary reduction structure 2 on the radial inner side of the rotor 12, the axial dimension can be reduced, and the structure is compact, occupies a small space, has a high integration degree, and is easy to be arranged in the whole vehicle.

[0041] In some embodiments of the present utility model, the dual-motor drive assembly 100 further includes an electric drive assembly housing 10. Two motors and two planetary reduction structures 2 are both installed inside the electric drive assembly housing 10.

[0042] That is to say, the motors have no outer casings, and the exposed stators 11 and rotors 12 are installed inside the electric drive assembly housing 10. Specifically, the motors include a first motor and a second motor. The first motor includes a first stator and a first rotor, and the second motor includes a second stator and a second rotor. By directly installing the first stator, the first rotor, the second stator, and the second rotor inside the electric drive assembly housing 10, the structure can be made more compact and the integration degree can be improved.

[0043] Furthermore, the planetary reduction structure 2 includes a first planetary reduction structure and a second planetary reduction structure. The first planetary reduction structure is installed inside the first rotor, and the second planetary reduction structure is installed inside the second rotor. Thus, the first planetary reduction structure and the second planetary reduction structure are also located inside the electric drive assembly housing 10, which can make the structure more compact and further improve the integration degree.

[0044] In some embodiments of the present utility model, as Figures 1 - 3 shown, the planetary reduction structure 2 includes a sun gear 21, a planet carrier 22, an inner planet gear 23, and an outer planet gear 24. The sun gear 21 is in transmission connection with the rotor 12. The planet carrier 22 is installed inside the electric drive assembly housing 10. Both the inner planet gear 23 and the outer planet gear 24 are installed on the planet carrier 22. The inner planet gear 23 is in transmission connection between the outer planet gear 24 and the sun gear 21. The outer planet gear 24 is in transmission connection with the wheel 20. Among them, the sun gear 21, the inner planet gear 23, and the outer planet gear 24 are all arranged in the radial direction. A plurality of inner planet gears 23 and outer planet gears 24 are both arranged along the circumferential direction of the sun gear 21.

[0045] That is to say, the planet carrier 22 is fixed inside the electric drive assembly housing 10 and the planet carrier 22 is stationary. When the rotor 12 drives the sun gear 21 to rotate, the sun gear 21 can drive the inner planet gear 23 to rotate, and the inner planet gear 23 can then continue to drive the outer planet gear 24 to rotate. With such a design, a wider range of transmission ratios can be provided, which is suitable for application scenarios that require a large reduction ratio. It can also increase the torque capacity, that is, the inner planet gear 23 and the outer planet gear 24 work together to share the input torque, enabling the overall system to withstand a greater load. Moreover, the planetary reduction structure 2 of the present application has a compact structure, good flexibility, and good power transmission performance.

[0046] In some embodiments of the present utility model, as Figures 1 - 3As shown, a motor shaft 13 is connected inside the rotor 12. The rotor 12 is drivingly connected to the sun gear 21 through the motor shaft 13. Among them, the rotor 12, the motor shaft 13, and the sun gear 21 are coaxially arranged. The coaxial arrangement reduces the number and complexity of components in the transmission chain, makes the power transmission more direct, reduces energy loss, improves the efficiency of the overall system, reduces the alignment error between different components, ensures the accuracy of the transmitted torque, and can improve the positioning accuracy and motion stability. The coaxial design allows for more compact integration, reduces the need for external transmission components, is conducive to reducing the volume of the device, reducing the weight, and facilitating installation and maintenance.

[0047] In some embodiments of the present invention, as Figures 1 - 3 shown, the planetary reduction structure 2 includes an outer planetary gear 24. The dual-motor drive assembly 100 further includes: a first reduction structure, which is drivingly connected between the planetary reduction structure 2 and the wheel 20. The first reduction structure includes: a ring gear 31 and a first gear 32. The ring gear 31 is drivingly connected to the outer planetary gear 24. The first gear 32 is coaxially connected to the ring gear 31. The outer diameter of the first gear 32 is smaller than the inner diameter of the ring gear 31. The first gear 32 is drivingly connected to the wheel 20.

[0048] That is to say, after the speed output by the motor is reduced by the planetary reduction structure 2, it can be further reduced by the first reduction structure and then transmitted to the wheel 20. Thus, after the high speed and low torque output by the motor are processed by the two-stage planetary reduction structure 2 and the first reduction structure, the high speed of the motor can be greatly reduced, and at the same time, the torque output to the wheel 20 can be doubled, meeting the power requirements for vehicle driving. A reasonable reduction ratio can make the motor operate in its efficient speed range, reduce ineffective energy consumption, improve energy utilization efficiency, and thus increase the cruising range of the electric vehicle. The two-stage reduction design can cover a wider vehicle speed range, enabling the vehicle to maintain good power performance and economy during low-speed driving and high-speed cruising.

[0049] In some embodiments of the present invention, as Figure 3 shown, the dual-motor drive assembly 100 further includes a second reduction structure, which is drivingly connected between the first reduction structure and the wheel 20. The second reduction structure includes a second gear 41. The second gear 41 is coaxially connected to the wheel 20. The second gear 41 is drivingly connected to the first gear 32. Among them, the outer diameter of the second gear 41 is larger than the outer diameter of the first gear 32. Thus, when the first gear 32 transmits speed and torque to the second gear 41, by making the outer diameter of the second gear 41 larger than the outer diameter of the first gear 32, the high speed of the motor can be further reduced, and at the same time, the torque output to the wheel 20 can be further increased, meeting the power requirements for vehicle driving.

[0050] In some embodiments of the present invention, as Figures 1 - 2As shown in the figure, the dual-motor drive assembly 100 further includes: a third reduction structure, which is drivingly connected between the first reduction structure and the wheel 20. The third reduction structure includes: a third gear 51 and a fourth gear 52. The third gear 51 is drivingly connected to the first gear 32. Among them, the outer diameter of the third gear 51 is larger than that of the first gear 32. The fourth gear 52 is coaxially connected to the third gear 51. The outer diameter of the fourth gear 52 is smaller than that of the third gear 51. The fourth gear 52 is drivingly connected to the wheel 20.

[0051] That is to say, after the rotational speed output by the motor is reduced by the planetary reduction structure 2, it can also be further reduced by the first reduction structure and the third reduction structure and then transmitted to the wheel 20. Thus, the high rotational speed and low torque output by the motor can be greatly reduced after three-stage processing by the planetary reduction structure 2, the first reduction structure and the third reduction structure, and at the same time, the torque output to the wheel 20 can be doubled to meet the power requirements for vehicle driving. A reasonable reduction ratio can enable the motor to operate within its efficient rotational speed range, reduce ineffective energy consumption, improve energy utilization efficiency, and thus increase the driving range of the electric vehicle. The two-stage reduction design can cover a wider vehicle speed range, enabling the vehicle to maintain good power performance and economy during low-speed driving and high-speed cruising.

[0052] In some embodiments of the present invention, as Figures 1 - 2 shown, the dual-motor drive assembly 100 further includes a fourth reduction structure, which is drivingly connected between the third reduction structure and the wheel 20. The fourth reduction structure includes: a fifth gear 61. The fifth gear 61 is coaxially connected to the wheel 20. The fifth gear 61 is drivingly connected to the fourth gear 52. Among them, the outer diameter of the fifth gear 61 is larger than that of the fourth gear 52. Thus, when the fourth gear 52 transmits the rotational speed and torque to the fifth gear 61, by making the outer diameter of the fifth gear 61 larger than that of the fourth gear 52, the high rotational speed of the motor can be further reduced, and at the same time, the torque output to the wheel 20 can be further increased to meet the power requirements for vehicle driving.

[0053] In some embodiments of the present invention, as Figure 1 shown, the fifth gear 61, the wheel 20 and the rotor 12 are coaxially arranged. As shown in the figure, the fifth gear 61, the wheel 20, the sun gear 21, the rotor 12 and the output shaft are all coaxially arranged. The coaxial design makes the entire drive system more compact and reduces the installation space requirements.

[0054] The present invention also proposes a vehicle having the dual-motor drive assembly 100 of the above embodiments.

[0055] A vehicle according to an embodiment of the present utility model, by being provided with the dual-motor drive assembly 100 of the above embodiment, by arranging the planetary reduction structure 2 radially inside the rotor 12, the axial dimension can be reduced, and the structure is compact, occupies a small space, has a high integration degree, and is easy to arrange in the whole vehicle.

[0056] The following refers to the attached Figure 1 Describe the dual-motor drive assembly 100 of the first embodiment of the present utility model.

[0057] A dual-motor drive assembly 100 includes two motors, and the two motors are coaxially arranged.

[0058] The dual-motor drive assembly 100 further includes two identical reduction drive systems. The reduction drive system includes: a sun gear 21; a planet carrier 22; an inner planet gear 23; an outer planet gear 24; a ring gear 31; the sun gear 21 is connected to the rotor 12 of the motor through a motor shaft 13; the planet carrier 22 is connected to the electric drive assembly housing 1050 and thus is fixed and cannot rotate; the inner planet gear 23 meshes with the outer planet gear 24, and both are located on the planet carrier 22; the inner planet gear 23 meshes with the sun gear 21; the outer planet gear 24 meshes with the internal gear of the ring gear 31; a first gear 32 is connected to the ring gear 31; the first gear 32 meshes with a third gear 51; a fourth gear 52 meshes with a fifth gear 61; the third gear 51 and the fourth gear 52 are both located on an intermediate shaft 71; the fifth gear 61 is connected to a wheel 20 through a first drive shaft 72; the motor shaft 13 is coaxially arranged with the fifth gear 61.

[0059] The structural schematic diagram of the second embodiment of the present utility model is as Figure 2 shown, and the difference from the first embodiment is that the motor shaft 13 and the fifth gear 61 are not coaxially arranged.

[0060] The following refers to the attached Figure 3 Describe the dual-motor drive assembly 100 of the third embodiment of the present utility model.

[0061] The structural schematic diagram of the third embodiment of the present utility model is as Figure 3 shown. A dual-motor drive assembly 100 includes two motors, and the two motors are coaxially arranged.

[0062] The dual-motor drive assembly 100 further includes two identical speed reduction and transmission systems. The speed reduction and transmission system includes: a sun gear 21; a planet carrier 22; an inner planet gear 23; an outer planet gear 24; a ring gear 31; the sun gear 21 is connected to the rotor 12 of the motor through a motor shaft 13; the planet carrier 22 is connected to the electric drive assembly housing 10 and thus is fixed and cannot rotate; the inner planet gear 23 meshes with the outer planet gear 24, and both are located on the planet carrier 22; the inner planet gear 23 meshes with the sun gear 21; the outer planet gear 24 meshes with the internal gear of the ring gear 31; a first gear 32 is connected to the ring gear 31; the first gear 32 meshes with a second gear 41; the second gear 41 is connected to the wheel 20 through a second drive shaft 73.

[0063] The dual-motor drive assembly 100 according to the embodiment of the present invention and other components and operations of the vehicle are known to those of ordinary skill in the art and will not be described in detail here.

[0064] In the description of this specification, the description with reference to terms such as "some embodiments", "optionally", "further", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dual-motor drive assembly for a vehicle, the vehicle comprising two wheels arranged on both sides of the vehicle body, characterized in that: The dual-motor drive assembly includes: two motors and two planetary reduction structures, the two motors and the two planetary reduction structures are transmission-connected in a one-to-one correspondence, and the two planetary reduction structures are transmission-connected to the two wheels respectively, wherein the motor includes: a stator and a rotor, the rotor is rotatably arranged on the radial inner side of the stator, and the planetary reduction structure is arranged on the radial inner side of the rotor and transmission-connected to the rotor.

2. The dual-motor drive assembly according to claim 1, characterized in that: The dual-motor drive assembly further includes: an electric drive assembly housing, wherein the two motors and the two planetary reduction structures are installed in the electric drive assembly housing.

3. The dual-motor drive assembly according to claim 2, characterized in that: The planetary reduction structure comprises: A sun gear, the sun gear is drivingly connected to the rotor; A planet carrier, the planet carrier being mounted in the electric drive assembly housing; An inner planetary gear and an outer planetary gear, wherein the inner planetary gear and the outer planetary gear are both mounted on the planet carrier, the inner planetary gear is drivingly connected between the outer planetary gear and the sun gear, and the outer planetary gear is drivingly connected to the wheel, wherein the sun gear, the inner planetary gear and the outer planetary gear are all arranged in a radial direction.

4. The dual-motor drive assembly according to claim 3, characterized in that: A motor shaft is connected inside the rotor, and the rotor is drivingly connected to the sun gear through the motor shaft, wherein the rotor, the motor shaft and the sun gear are coaxially arranged.

5. The dual-motor drive assembly according to any one of claims 1 to 4, characterized in that: The planetary reduction structure includes an outer planetary wheel, and the dual-motor drive assembly also includes: a first reduction structure, the first reduction structure is transmission-connected between the planetary reduction structure and the wheel, and the first reduction structure includes: A ring gear, the ring gear being drivingly connected to the outer planetary gear; A first gear, wherein the first gear is coaxially connected to the gear ring, an outer diameter of the first gear is smaller than an inner diameter of the gear ring, and the first gear is drivingly connected to the wheel.

6. The dual-motor drive assembly according to claim 5, characterized in that: The dual-motor drive assembly further includes: a second reduction structure, the second reduction structure is transmission-connected between the first reduction structure and the wheel, and the second reduction structure includes: A second gear, wherein the second gear is coaxially connected to the wheel, and the second gear is drivingly connected to the first gear, wherein an outer diameter of the second gear is greater than an outer diameter of the first gear.

7. The dual-motor drive assembly according to claim 5, characterized in that: The dual-motor drive assembly further includes: a third reduction structure, the third reduction structure is transmission-connected between the first reduction structure and the wheel, and the third reduction structure includes: a third gear, the third gear being drivingly connected to the first gear, wherein an outer diameter of the third gear is greater than an outer diameter of the first gear; A fourth gear is coaxially connected to the third gear, an outer diameter of the fourth gear is smaller than an outer diameter of the third gear, and the fourth gear is drivingly connected to the wheel.

8. The dual-motor drive assembly according to claim 7, characterized in that: The dual-motor drive assembly further includes: a fourth reduction structure, the fourth reduction structure is transmission-connected between the third reduction structure and the wheel, and the fourth reduction structure includes: A fifth gear, wherein the fifth gear is coaxially connected to the wheel, and the fifth gear is transmission-connected to the fourth gear, wherein an outer diameter of the fifth gear is greater than an outer diameter of the fourth gear.

9. The dual-motor drive assembly according to claim 8, characterized in that: The fifth gear, the wheel and the rotor are coaxially arranged.

10. A vehicle, characterized in that: Comprising the dual-motor drive assembly described in any one of claims 1-9.

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