Power system and vehicle

Abstract

The utility model discloses a power system and a vehicle, the power system comprises a motor assembly, the motor assembly comprises a motor part and a motor shaft, the motor shaft is in transmission connection with the motor part; the reduction gear assembly comprises a first reduction part and a second reduction part, and the first reduction part is connected with the motor shaft and is in transmission fit with the second reduction part; the driving shaft is connected with the second speed reducing part and extends in the front-back direction, and the two ends of the driving shaft in the front-back direction are suitable for being connected with front and rear wheels correspondingly; the torque distributor is connected with the driving shaft so as to be suitable for distributing torque between the front wheel and the rear wheel. Therefore, the torque distributor is arranged in the power system and connected with the driving shaft, so that power can be transmitted to the torque distributor through the driving shaft, torque distribution of front and rear wheels can be realized, and the off-road performance of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a power system and a vehicle. Background Art

[0002] At present, automobile electrification technology and industry are becoming increasingly mature, and the number of electric four-wheel drive models from major automakers is increasing. In hybrid, plug-in hybrid and extended-range hybrid models, the solution of independent arrangement of front and rear drive motors is generally adopted.

[0003] In the related art, when the tires of four-wheel drive vehicles with strong off-road requirements slip, the power transfer between the front and rear axles cannot be performed, making it difficult to meet the off-road escape requirements under extreme conditions. At the same time, there are layout difficulties in strong off-road vehicles. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a power system, which can provide stronger off-road performance.

[0005] The utility model further provides a vehicle.

[0006] According to the power system of the embodiment of the utility model, it includes: a motor assembly, the motor assembly includes a motor part and a motor shaft, the motor shaft is drivingly connected to the motor part; a reduction gear assembly, the reduction gear assembly includes a first reduction member and a second reduction member, the first reduction member is connected to the motor shaft and is drivingly matched with the second reduction member; a drive shaft, the drive shaft is connected to the second reduction member and extends in the front-to-back direction, and the two ends of the drive shaft in the front-to-back direction are respectively suitable for being connected to the front and rear wheels; a torque distributor, the torque distributor is connected to the drive shaft to be suitable for distributing the torque between the front and rear wheels.

[0007] Therefore, by setting a torque distributor in the power system and connecting it to the drive shaft, power can be transmitted to the torque distributor through the drive shaft, so that torque distribution between the front and rear wheels can be achieved, thereby improving the off-road performance of the vehicle.

[0008] According to some embodiments of the utility model, the reduction gear assembly is a planetary reduction gear assembly, which includes a sun gear, a planetary gear, a planet carrier and a ring gear, the planetary gear is arranged at the outer periphery of the sun gear and meshes with the sun gear, the planet carrier is connected to the planetary gear, the ring gear is arranged at the outer periphery of the planetary gear and meshes with the planetary gear, the ring gear is suitable for being connected to the reducer housing, the sun gear is the first reduction component, and the planet carrier is the second reduction component.

[0009] According to some embodiments of the present utility model, the reduction gear assembly is a planetary reduction gear assembly. The planetary reduction gear assembly includes a sun gear, planet gears, a planet carrier, and a ring gear. The planet gears are disposed on the outer periphery of the sun gear and mesh with the sun gear. The planet carrier is connected to the planet gears. The ring gear is disposed on the outer periphery of the planet gears and meshes with the planet gears. The planet carrier is adapted to be connected to the reducer housing. The sun gear is the first reduction member, and the ring gear is the second reduction member.

[0010] According to some embodiments of the present utility model, the reduction gear assembly is a parallel-axis gear reduction assembly. The parallel-axis gear reduction assembly includes a first gear member, a second gear member, a transmission shaft, a third gear member, and a fourth gear member. The transmission shaft is parallel to the drive shaft or the motor shaft. The first gear member is disposed on the motor shaft, the second gear member is disposed on the drive shaft, the third gear member and the fourth gear member are spaced apart on the transmission shaft. The first gear member and the third gear member are engaged and driven, and the second gear member and the fourth gear member are engaged and driven. The first gear member is the first reduction member, and the second gear member is the second reduction member.

[0011] According to some embodiments of the present utility model, the motor shaft is a hollow shaft, and the drive shaft is disposed inside the motor shaft and penetrates the motor shaft in the front-rear direction to be connected to the front and rear wheels.

[0012] According to some embodiments of the present utility model, there is one motor shaft, one reduction gear assembly, and one drive shaft. One motor shaft, one drive shaft, and one reduction gear assembly are arranged in one-to-one correspondence.

[0013] According to some embodiments of the present utility model, there are two reduction gear assemblies, two drive shafts, and two motor shafts. The two motor shafts are respectively disposed at the front and rear ends of the motor member. The two drive shafts are respectively connected to the front and rear wheels. The motor shafts and the drive shafts are spaced apart in the front-rear direction. The reduction gear assemblies are disposed between the motor shafts and the drive shafts and are respectively in transmission connection with the motor shafts and the drive shafts. The two reduction gear assemblies, the two drive shafts, and the two motor shafts are arranged in one-to-one correspondence.

[0014] According to some embodiments of the present utility model, there is one torque distributor. One torque distributor is located on the front side of the motor assembly. One end of the torque distributor is connected to the drive shaft, and the other end is adapted to be connected to the differential of the front wheels; or the torque distributor is located on the rear side of the motor assembly. One end of the torque distributor is connected to the drive shaft, and the other end is adapted to be connected to the differential of the rear wheels.

[0015] According to some embodiments of the present utility model, there are two torque distributors, namely a first torque distributor and a second torque distributor. The first torque distributor is located on the front side of the motor assembly. One end of the first torque distributor is connected to the drive shaft, and the other end is adapted to be connected to the differential of the front wheels. The second torque distributor is located on the rear side of the motor assembly. One end of the second torque distributor is connected to the drive shaft, and the other end is adapted to be connected to the differential of the rear wheels.

[0016] The vehicle according to the present utility model includes the power system described above.

[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 will be understood through the practice of the present utility model. Brief 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 partial schematic view of a vehicle according to some embodiments of the present utility model;

[0020] Figure 2 is a partial schematic view of a vehicle according to some other embodiments of the present utility model;

[0021] Figure 3 is a partial schematic view of a vehicle according to still some other embodiments of the present utility model;

[0022] Figure 4 is a partial schematic view of a vehicle according to still some other embodiments of the present utility model;

[0023] Figure 5 is a partial schematic view of a vehicle according to still some other embodiments of the present utility model.

[0024] Reference Signs:

[0025] 1000, vehicle;

[0026] 100, power system; 200, wheel; 300, reducer housing; 400, differential;

[0027] 10, motor assembly; 11, motor part; 111, stator; 112, rotor; 12, motor shaft;

[0028] 20. Reduction gear assembly; 201. First reduction member; 202. Second reduction member; 203. Planet gear; 204. Planet carrier; 205. Ring gear; 206. Sun gear; 207. First gear member; 208. Second gear member; 209. Transmission shaft; 210. Third gear member; 211. Fourth gear member;

[0029] 30. Torque distributor; 40. Drive shaft; 50. Half shaft. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0031] Reference will be made below to Figures 1 - 5 Describe the power system 100 according to the embodiments of the present invention. The power system 100 according to the embodiments of the present invention can be applied to a vehicle 1000.

[0032] In combination with Figures 1 - 5 As shown, the power system 100 according to the embodiments of the present invention mainly includes: a motor assembly 10, a reduction gear assembly 20, a drive shaft 40, and a torque distributor 30. Among them, the motor assembly 10 includes a motor member 11 and a motor shaft 12, and the motor shaft 12 is in transmission connection with the motor member 11. Specifically, the motor assembly 10 can provide driving force for the power system 100 and is the main power source for the vehicle 1000 to travel. The motor member 11 includes a stator 111 and a rotor 112. The motor shaft 12 is connected to the rotor 112. When the rotor 112 rotates around the stator 111, the motor shaft 12 can be driven to rotate synchronously, so that the driving force generated by the motor assembly 10 is transmitted outside the motor member 11.

[0033] Furthermore, the reduction gear assembly 20 mainly reduces the output power of the motor assembly 10 and increases the torque to provide a large enough driving force for the wheels 200 of the vehicle 1000. The reduction gear assembly 20 includes a first reduction member 201 and a second reduction member 202. Among them, the first reduction member 201 is connected to the motor shaft 12, so that the power generated by the motor member 11 can be directly transmitted to the first reduction member 201 through the motor shaft 12, which can reduce the transmission loss of power between the motor assembly 10 and the reduction gear assembly 20 and is beneficial to improving the transmission efficiency of the power system 100.

[0034] Furthermore, the first reduction member 201 and the second reduction member 202 are in transmission cooperation. In this way, during the process of power transmission from the first reduction member 201 to the second reduction member 202, the reduction gear assembly 20 can reduce the power and increase the torque, so that the power system 100 can provide sufficient power to overcome the ground friction and meet the driving requirements of the vehicle 1000.

[0035] Furthermore, the drive shaft 40 is connected to the second reduction member 202 and extends in the front-to-back direction. In this way, the power on the second reduction member 202 can be transmitted to the drive shaft 40. At this time, the power on the second reduction member 202 can be used to directly drive the wheel 200 to rotate. By extending the drive shaft 40 forward and backward, the driving force can be transmitted in the front-to-back direction. At the same time, the front and rear ends of the drive shaft 40 are respectively connected to the front and rear wheels 200 of the vehicle 1000. In this way, through the drive shaft 40, the driving force on the second reduction member 202 can be transmitted forward to the front wheels of the vehicle 1000, and the driving force on the second reduction member 202 can also be transmitted backward to the rear wheels of the vehicle 1000. In this way, the power system 100 in the embodiment of the utility model can simultaneously drive the front and rear wheels 200 to rotate through a motor assembly 10, which is conducive to simplifying the structure of the power system 100 in the embodiment of the utility model.

[0036] Furthermore, the torque distributor 30 is connected to the drive shaft 40. With such a configuration, when the power on the drive shaft 40 is transmitted to the front and rear wheels 200 of the vehicle 1000, the power on the drive shaft 40 is transmitted to the torque distributor 30, and after the power is distributed by the torque distributor 30, the torque of the front and rear wheels 200 can be changed, so that the torque distribution of the front and rear wheels 200 can be achieved.

[0037] In an embodiment of the utility model, when a wheel 200 on one side of the vehicle 1000 slips, the torque distributor 30 can reduce the power distributed to the side of the slipping wheel 200, and distribute more power to the wheel 200 on the non-slipping side, which helps the vehicle 1000 to get out of trouble, thereby improving the off-road performance of the vehicle 1000.

[0038] In addition, the torque distributor 30 can also control the connection and disconnection of power between the front and rear wheels 200 and the drive shaft 40, so as to achieve power integration and decoupling between the front and rear wheels 200. When the wheels 200 slip, power can be transferred in the front and rear directions to enhance the off-road escape capability of the vehicle 1000.

[0039] According to some embodiments of the present invention, Figure 1 As shown, the reduction gear assembly 20 is a planetary reduction gear assembly, which includes a sun gear 206, a planetary gear 203, a planet carrier 204 and a ring gear 205. The planetary gear 203 is arranged on the outer periphery of the sun gear 206 and meshes with the sun gear 206. The planetary carrier 204 is connected to the planetary gear 203. The ring gear 205 is arranged on the outer periphery of the planetary gear 203 and meshes with the planetary gear 203. The ring gear 205 is suitable for being connected to the reducer housing 300. The sun gear 206 is the first reduction component 201, and the planetary carrier 204 is the second reduction component 202.

[0040] Specifically, the reduction gear assembly 20 is set as a planetary reduction gear assembly. The transmission ratios among the sun gear 206, the planet gears 203, the planet carrier 204, and the ring gear 205 are different, and the power transmitted to the reduction gear assembly 20 can be decelerated and torque-increased. In the embodiment of the present invention, the sun gear 206 serves as the first reduction member 201 and is connected to the motor shaft 12. In this way, after the power on the motor shaft 12 enters the reduction gear assembly 20, the sun gear 206 drives the planet gears 203 to rotate around it. Also, since the ring gear 205 is connected to the reducer housing 300, the planet gears 203 can drive the planet carrier 204 to rotate. In the embodiment of the present invention, the planet carrier 204 serves as the second reduction member 202 and can transmit the power that has been decelerated and torque-increased by the planetary reduction gear assembly to the transmission shaft 209, thereby completing the deceleration and torque-increase work of the power before it is transmitted to the wheel 200.

[0041] According to some other embodiments of the present invention, in combination with Figure 3 As shown, the reduction gear assembly 20 is a planetary reduction gear assembly. The planetary reduction gear assembly includes a sun gear 206, planet gears 203, a planet carrier 204, and a ring gear 205. The planet gears 203 are arranged on the outer periphery of the sun gear 206 and mesh with the sun gear 206. The planet carrier 204 is connected to the planet gears 203. The ring gear 205 is arranged on the outer periphery of the planet gears 203 and meshes with the planet gears 203. The planet carrier 204 is adapted to be connected to the reducer housing 300. The sun gear 206 is the first reduction member 201, and the ring gear 205 is the second reduction member 202.

[0042] Specifically, the reduction gear assembly 20 is set as a planetary reduction gear assembly. The transmission ratios among the sun gear 206, the planet gears 203, the planet carrier 204, and the ring gear 205 are different, and the power transmitted to the reduction gear assembly 20 can be decelerated and torque-increased. In the embodiment of the present invention, the sun gear 206 serves as the first reduction member 201 and is connected to the motor shaft 12. In this way, after the power on the motor shaft 12 enters the reduction gear assembly 20, the sun gear 206 drives the planet gears 203 to rotate around it. Also, since the planet carrier 204 is connected to the reducer housing 300, the planet gears 203 can transmit the power to the ring gear 205, causing the ring gear 205 to rotate. In the embodiment of the present invention, the ring gear 205 serves as the second reduction member 202 and can transmit the power that has been decelerated and torque-increased by the planetary reduction gear assembly to the transmission shaft 209, thereby completing the deceleration and torque-increase work of the power before it is transmitted to the wheel 200.

[0043] According to still some other embodiments of the present invention, in combination with Figure 4As shown, the reduction gear assembly 20 is a parallel-axis gear reduction assembly. The parallel-axis gear reduction assembly includes a first gear member 207, a second gear member 208, a transmission shaft 209, a third gear member 210, and a fourth gear member 211. The transmission shaft 209 is parallel to the drive shaft 40 or the motor shaft 12. The first gear member 207 is arranged on the motor shaft 12, the second gear member 208 is arranged on the drive shaft 40, the third gear member 210 and the fourth gear member 211 are arranged on the transmission shaft 209 at intervals. The first gear member 207 and the third gear member 210 are meshed and driven, the second gear member 208 and the fourth gear member 211 are meshed and driven. The first gear member 207 is the first reduction member 201, and the second gear member 208 is the second reduction member 202.

[0044] Specifically, the reduction gear assembly 20 is set as a parallel-axis gear reduction assembly, and the power can be transmitted along the direction of the motor shaft 12 - the first gear member 207 - the third gear member 210 - the transmission shaft 209 - the fourth gear member 211 - the second gear member 208 - the drive shaft 40. The transmission ratio of the first gear member 207 and the third gear member 210 is different from that of the fourth gear member 211 and the second gear member 208, and the power transmitted to the parallel-axis gear reduction assembly can be decelerated and the torque can be increased.

[0045] In the embodiment of the present utility model, the first gear member 207, as the first reduction member 201, is connected to the motor shaft 12. In this way, the power on the motor shaft 12 can drive the third gear member 210 to rotate after entering the parallel-axis gear reduction assembly. Also, because both the third gear member 210 and the fourth gear member 211 are arranged on the transmission shaft 209, the third gear member 210 can transmit the power to the fourth gear member 211, so that the fourth gear member 211 drives the second gear member 208 to rotate. In the embodiment of the present utility model, the second gear member 208, as the second reduction member 202, can transmit the power that has been decelerated and the torque increased by the parallel-axis gear reduction assembly to the transmission shaft 209, thereby completing the work of decelerating and increasing the torque before the power is transmitted to the wheel 200.

[0046] Combined with Figures 1 - 4As shown, the motor shaft 12 is a hollow shaft, and the drive shaft 40 is arranged inside the motor shaft 12 and penetrates the motor shaft 12 in the front-rear direction to be connected to the front and rear wheels 200. Specifically, in the embodiment of the present invention, the motor shaft 12 is set as a hollow shaft, so that the drive shaft 40 extending in the front and rear directions can be integrally arranged with the motor shaft 12. The specific implementation method is to pass the drive shaft 40 through the inside of the motor shaft 12 in the front-rear direction, and the front and rear ends of the drive shaft 40 are respectively connected to the front and rear wheels 200 of the vehicle 1000. In this way, not only can the structural integration of the power system 100 be improved, and the layout space of the whole vehicle in the left-right direction be increased, but also the motor shaft 12 and the drive shaft 40 can be independent of each other, so that the power on the motor shaft 12 and the drive shaft 40 will not interfere with each other, and thus the transmission reliability of the power system 100 can be ensured.

[0047] According to some embodiments of the present invention, in combination with Figures 1 - 4 As shown, there is one motor shaft 12, one reduction gear assembly 20, and one drive shaft 40. One motor shaft 12, one drive shaft 40, and one reduction gear assembly 20 are arranged in one-to-one correspondence. Specifically, in the embodiment of the present invention, the power system 100 of the vehicle 1000 includes one motor shaft 12, one reduction gear assembly 20, and one drive shaft 40. In this way, the structure of the power system 100 in the embodiment of the present invention can be simple, and the number of components is small, so that the setting of the power system 100 of the vehicle 1000 can be simplified. Not only can the transmission efficiency of the power system 100 be higher, but also it is beneficial to the lightweight of the whole vehicle.

[0048] Furthermore, in the embodiment of the present invention, one motor shaft 12, one drive shaft 40, and one reduction gear assembly 20 in the power system 100 are arranged in one-to-one correspondence. In this way, it can be ensured that the output power of the motor component 11 is transmitted through one motor shaft 12, one drive shaft 40, and one reduction gear assembly 20 in the power system 100, and the power provided by the power system 100 to the front and rear wheels 200 can be decelerated and torque-increased, so as to ensure that the front and rear wheels 200 obtain appropriate driving forces.

[0049] According to other embodiments of the present invention, in combination with Figure 5 As shown, there are two reduction gear assemblies 20, two drive shafts 40, and two motor shafts 12. The two motor shafts 12 are respectively arranged at the front and rear ends of the motor component 11. The two drive shafts 40 are respectively connected to the front and rear wheels 200. The motor shafts 12 and the drive shafts 40 are arranged at intervals in the front and rear directions. The reduction gear assemblies 20 are arranged between the motor shafts 12 and the drive shafts 40 and are respectively in transmission connection with the motor shafts 12 and the drive shafts 40. The two reduction gear assemblies 20, two drive shafts 40, and two motor shafts 12 are arranged in one-to-one correspondence.

[0050] Specifically, in the embodiment of the present utility model, two motor shafts 12 can be provided in the power system 100, and are respectively located at the front and rear ends of the motor member 11. The two motor shafts 12 are respectively connected to the front and rear sides of the rotor 112, so that the output power of the motor member 11 can be transmitted forward and backward. At the same time, two drive shafts 40 are respectively connected to the front and rear wheels 200 to transmit the power of the power system 100 to the front and rear wheels 200 respectively.

[0051] Furthermore, in the embodiment of the present utility model, the motor shafts 12 and the drive shafts 40 are spaced apart front and rear. At this time, the drive shafts 40 do not need to pass through the inside of the motor shafts 12, and a reduction gear assembly 20 is provided between the motor shafts 12 and the drive shafts 40. In this way, two reduction gear assemblies 20 are provided in the power system 100, and the two reduction gear assemblies 20, the two drive shafts 40 and the two motor shafts 12 are arranged in one-to-one correspondence. In this way, it can be ensured that the power in the power system 100 is transmitted to the front and rear wheels 200 through the reduction gear assembly 20, and thus the appropriate driving force can be ensured for the front and rear wheels 200.

[0052] Combined with Figure 1 、 Figure 3 and Figure 4 As shown, in some embodiments of the present utility model, there is one torque distributor 30. One torque distributor 30 is located on the front side of the motor assembly 10. One end of the torque distributor 30 is connected to the drive shaft 40, and the other end is adapted to be connected to the differential 400 of the front wheel. With such a setting, the torque distributor 30 can combine, decouple and distribute the forces transmitted by the power system 100 to the front and rear wheels. In this way, the power system 100 of the embodiment of the present utility model can perform torque distribution for the front and rear wheels 200 according to the actual operating conditions of the vehicle 1000, which can help the vehicle 1000 adapt to more road conditions.

[0053] For example, when one of the front or rear wheels of the vehicle 1000 slips, the torque distributor 30 can integrate the power in the power system 100 according to the vehicle condition. On the one hand, this can reduce the torque transmitted to the slipping-side wheel 200, and on the other hand, a larger torque can be distributed to the non-slipping wheel 200 of the vehicle 1000, which helps the vehicle 1000 quickly get out of trouble and thus can improve the off-road performance of the vehicle 1000.

[0054] Furthermore, one end of the torque distributor 30 is connected to the drive shaft 40, and the other end is connected to the differential 400 of the front wheel. In this way, the torque distributor 30 can be arranged in front of the vehicle 1000, which can reduce the occupied space of the power system 100 at the rear side of the vehicle 1000, and can provide more installation space for other components at the rear side of the vehicle 1000, thus being beneficial to improving the structural compactness of the whole vehicle.

[0055] In some other embodiments of the present utility model, in combination with Figure 2 As shown, there is one torque distributor 30, and one torque distributor 30 is located at the rear side of the motor assembly 10. One end of the torque distributor 30 is connected to the drive shaft 40, and the other end is adapted to be connected to the differential 400 of the front wheels. With such an arrangement, the torque distributor 30 can combine, decouple, and distribute the forces transmitted by the power system 100 to the front and rear wheels, so that the power system 100 of the embodiments of the present utility model can perform torque distribution for the front and rear wheels 200 according to the actual operating conditions of the vehicle 1000, which can help the vehicle 1000 adapt to more road conditions.

[0056] For example, when one of the front or rear wheels of the vehicle 1000 slips, the torque distributor 30 can integrate the power in the power system 100 according to the vehicle condition. On the one hand, this can reduce the torque transmitted to the slipping-side wheel 200, and on the other hand, it can distribute a larger torque to the non-slipping wheels 200 of the vehicle 1000, which helps the vehicle 1000 quickly get out of trouble and thus can improve the off-road performance of the vehicle 1000.

[0057] Furthermore, one end of the torque distributor 30 is connected to the drive shaft 40, and the other end is connected to the differential 400 of the rear wheels, so that the torque distributor 30 is arranged at the rear of the vehicle 1000, which can reduce the occupied space of the power system 100 at the front side of the vehicle 1000 and can provide more installation space for other components at the front side of the vehicle 1000, thus being beneficial to improving the structural compactness of the whole vehicle.

[0058] In still some other embodiments of the present utility model, there are two torque distributors 30, and the two torque distributors 30 are respectively a first torque distributor and a second torque distributor. The first torque distributor is located at the front side of the motor assembly 10. One end of the first torque distributor is connected to the drive shaft 40, and the other end is adapted to be connected to the differential 400 of the front wheels. The second torque distributor is located at the rear side of the motor assembly 10. One end of the second torque distributor is connected to the drive shaft 40, and the other end is adapted to be connected to the differential 400 of the rear wheels.

[0059] With such a setting, both the first torque distributor and the second torque distributor can combine, decouple, and distribute the forces transmitted by the power system 100 to the front and rear wheels. In this way, the power system 100 of the embodiment of the present invention can perform torque distribution for the front and rear wheels 200 according to the actual operating conditions of the vehicle 1000, which helps the vehicle 1000 adapt to more road conditions. For example, when one of the front or rear wheels of the vehicle 1000 slips, the first torque distributor and the second torque distributor can integrate the power in the power system 100 according to the vehicle condition. On the one hand, this can reduce the torque transmitted to the slipping-side wheel 200, and on the other hand, a larger torque can be distributed to the non-slipping wheel 200 of the vehicle 1000, which helps the vehicle 1000 quickly get out of trouble and thus can improve the off-road performance of the vehicle 1000.

[0060] According to an embodiment of the present invention, the power system 100 can be applied to the vehicle 1000. For a vehicle 1000 configured with the power system 100 of the present invention, by arranging a torque distributor 30 in the power system 100 and connecting it to the drive shaft 40, the power can be transmitted to the torque distributor 30 through the drive shaft 40, so that torque distribution for the front and rear wheels can be achieved, thereby improving the off-road performance of the vehicle 1000. In addition, only one motor assembly 10 needs to be arranged in the power system 100 of the present invention to achieve the four-wheel drive mode of the vehicle 1000. The structure is simple and the layout is compact, which not only makes the transmission efficiency of the power system 100 higher, but also is beneficial to the lightweight of the whole vehicle.

[0061] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", 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.

[0062] 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 power system, characterized in that: include: A motor assembly (10), the motor assembly (10) comprising a motor component (11) and a motor shaft (12), the motor shaft (12) being drivingly connected to the motor component (11); A reduction gear assembly (20), the reduction gear assembly (20) comprising a first reduction member (201) and a second reduction member (202), the first reduction member (201) being connected to the motor shaft (12) and being in transmission cooperation with the second reduction member (202); A drive shaft (40), the drive shaft (40) being connected to the second speed reducer (202) and extending in the front-to-rear direction, and both ends of the drive shaft (40) in the front-to-rear direction being respectively suitable for being connected to the front and rear wheels (200); A torque distributor (30) is connected to the drive shaft (40) and is suitable for distributing torque between the front and rear wheels (200).

2. The power system according to claim 1, characterized in that: The reduction gear assembly (20) is a planetary reduction gear assembly (20), comprising a sun gear (206), a planetary gear (203), a planet carrier (204) and a ring gear (205); the planetary gear (203) is arranged on the outer periphery of the sun gear (206) and meshes with the sun gear (206); the planetary carrier (204) is connected to the planetary gear (203); the ring gear (205) is arranged on the outer periphery of the planetary gear (203) and meshes with the planetary gear (203); the ring gear (205) is suitable for being connected to a reducer housing (300); the sun gear (206) is the first reduction member (201); and the planetary carrier (204) is the second reduction member (202).

3. The power system according to claim 1, characterized in that: The reduction gear assembly (20) is a planetary reduction gear assembly (20), comprising a sun gear (206), a planetary gear (203), a planet carrier (204) and a ring gear (205); the planetary gear (203) is arranged on the periphery of the sun gear (206) and meshes with the sun gear (206); the planetary carrier (204) is connected to the planetary gear (203); the ring gear (205) is arranged on the periphery of the planetary gear (203) and meshes with the planetary gear (203); the planetary carrier (204) is suitable for being connected to a reducer housing (300); the sun gear (206) is the first reduction member (201); and the ring gear (205) is the second reduction member (202).

4. The power system according to claim 1, characterized in that: The reduction gear assembly (20) is a parallel axis gear reduction assembly, comprising a first gear member (207), a second gear member (208), a transmission shaft (209), a third gear member (210) and a fourth gear member (211); the transmission shaft (209) is parallel to the drive shaft (40) or the motor shaft (12); the first gear member (207) is arranged on the motor shaft (12); the second gear member (208) is arranged on the drive shaft (40); the third gear member (210) and the fourth gear member (211) are arranged on the transmission shaft (209) at intervals; the first gear member (207) and the third gear member (210) are meshed for transmission; the second gear member (208) and the fourth gear member (211) are meshed for transmission; the first gear member (207) is the first reduction member (201); and the second gear member (208) is the second reduction member (202).

5. The power system according to any one of claims 2 to 4, characterized in that: The motor shaft (12) is a hollow shaft, and the drive shaft (40) is arranged inside the motor shaft (12) and passes through the motor shaft (12) in the front-rear direction so as to be connected to the front and rear wheels (200).

6. The power system according to any one of claims 2 to 4, characterized in that: There is one motor shaft (12), one reduction gear assembly (20), and one drive shaft (40); one motor shaft (12), one drive shaft (40), and one reduction gear assembly (20) are arranged in a one-to-one correspondence.

7. The power system according to any one of claims 2 to 4, characterized in that: The reduction gear assembly (20), the drive shaft (40) and the motor shaft (12) are each two in number. The two motor shafts (12) are respectively arranged at the front and rear ends of the motor component (11). The two drive shafts (40) are respectively connected to the front and rear wheels (200). The motor shaft (12) and the drive shaft (40) are arranged with a front-to-rear spacing. The reduction gear assembly (20) is arranged between the motor shaft (12) and the drive shaft (40) and is respectively connected to the motor shaft (12) and the drive shaft (40) in transmission. The two reduction gear assemblies (20), the two drive shafts (40) and the two motor shafts (12) are arranged in a one-to-one correspondence.

8. The power system according to claim 1, characterized in that: There is one torque distributor (30), and one torque distributor (30) is located at the front side of the motor assembly (10), one end of the torque distributor (30) is connected to the drive shaft (40), and the other end is suitable for connecting to the differential (400) of the front wheel; or The torque distributor (30) is located at the rear side of the motor assembly (10); one end of the torque distributor (30) is connected to the drive shaft (40), and the other end is suitable for being connected to the differential (400) of the rear wheels.

9. The power system according to claim 1, characterized in that: There are two torque distributors (30), which are respectively a first torque distributor and a second torque distributor. The first torque distributor is located on the front side of the motor assembly (10), one end of the first torque distributor is connected to the drive shaft (40), and the other end is suitable for being connected to the differential (400) of the front wheel. The second torque distributor is located on the rear side of the motor assembly (10), one end of the second torque distributor is connected to the drive shaft (40), and the other end is suitable for being connected to the differential (400) of the rear wheel.

10. A vehicle (1000), characterized in that: A power system (100) comprising any one of claims 1-9.

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