Power system and vehicle

Abstract

The utility model discloses a power system and a vehicle, the power system comprises a front drive assembly, the front drive assembly comprises an engine, a generator, a torque converter and a front differential mechanism, the generator is selectively in transmission connection with the engine; the torque converter is selectively in transmission connection with the generator, the front differential mechanism is selectively in transmission connection with the torque converter, and the front differential mechanism is suitable for being connected with a left front wheel and a right front wheel of a vehicle; the rear drive assembly comprises a drive motor and a rear differential mechanism, the drive motor is in transmission connection with the rear differential mechanism, and the rear differential mechanism is suitable for being connected with a left rear wheel and a right rear wheel of the vehicle. Therefore, not only can the front-drive assembly have a full-speed-domain engine direct-drive function and the working performance of the power system be improved, but also the cost and the energy consumption can be reduced on the premise that the four-wheel-drive function of the power system is achieved.

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] With the increasing maturity of automotive electrification technology and industry, the market share of hybrid vehicles has gradually expanded, and users' demand for the four-wheel drive function of vehicles is also increasing.

[0003] In the related art, there are two solutions for hybrid vehicles to achieve the four-wheel drive function. One is to use a mechanical transmission device to achieve the front and rear axle drive function. However, due to the existence of the intermediate shaft, this solution results in insufficient layout space for the power battery of vehicles with a long pure electric driving range requirement. The other is to use a driving motor assembled on the front and rear axles to achieve the front and rear axle drive function. However, this solution leads to an increase in the overall vehicle cost and energy consumption due to the addition of a driving motor. Summary of the Utility Model

[0004] 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 propose a power system, which can achieve the four-wheel drive function and has lower cost and energy consumption.

[0005] Another object of the utility model is to propose a vehicle.

[0006] The power system according to an embodiment of the utility model includes: a front drive assembly, the front drive assembly includes: an engine, a generator, a torque converter and a front differential, the generator is selectively connected to the engine in a transmission manner; the torque converter is selectively connected to the generator in a transmission manner, the front differential is selectively connected to the torque converter in a transmission manner, and the front differential is adapted to be connected to the left and right front wheels of the vehicle; a rear drive assembly, the rear drive assembly includes: a driving motor and a rear differential, the driving motor is connected to the rear differential in a transmission manner, and the rear differential is adapted to be connected to the left and right rear wheels of the vehicle.

[0007] Thus, by making the front drive assembly include an engine, a generator, a torque converter and a front differential, and making the rear drive assembly include: a driving motor and a rear differential, not only can the front drive assembly have the function of direct drive of the engine in the full speed range, improving the working performance of the power system, but also can reduce the cost and energy consumption on the premise of realizing the four-wheel drive function of the power system.

[0008] In some examples of the present utility model, the torque converter has a torque converter output shaft. The front drive assembly further includes a transmission, which includes a sun gear, planet gears, a planet carrier, and a ring gear. The sun gear is disposed on the torque converter output shaft. 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 ring gear is selectively engaged with the transmission housing. The torque converter output shaft is selectively engaged with the planet carrier.

[0009] In some examples of the present utility model, the transmission further includes a first clutch and a second clutch. The first clutch is disposed on the ring gear and is selectively engaged with the transmission housing. The second clutch is disposed on the torque converter output shaft and is selectively engaged with the planet carrier.

[0010] In some examples of the present utility model, the front drive assembly further includes a front reduction assembly, which includes a first reduction gear, a second reduction gear, and a third reduction gear. The transmission has a transmission output shaft, which is connected to the planet carrier. The first reduction gear is disposed on the transmission output shaft. The third reduction gear is connected to the front differential. The second reduction gear is meshed between the first reduction gear and the third reduction gear.

[0011] In some examples of the present utility model, the rear drive assembly further includes a rear reduction assembly, which includes a fourth reduction gear, a fifth reduction gear, and a sixth reduction gear. The fourth reduction gear is disposed on the output shaft of the drive motor. The sixth reduction gear is connected to the rear differential. The fifth reduction gear is meshed between the fourth reduction gear and the sixth reduction gear.

[0012] In some examples of the present utility model, the torque converter has a torque converter output shaft, and a first disconnecting device is disposed on the torque converter output shaft and is selectively engaged with the front reduction assembly.

[0013] In some examples of the present utility model, the engine has an engine output shaft, and the generator has a generator input shaft. A second disconnecting device is disposed on the engine output shaft and is selectively engaged with the generator input shaft.

[0014] In some examples of the present utility model, the engine has an engine output shaft, and the generator has a generator input shaft. The engine output shaft and the generator input shaft are coaxially arranged.

[0015] In some examples of the present utility model, the engine has an engine output shaft, the generator has a generator input shaft, the engine output shaft and the generator input shaft are arranged at intervals and are parallel to each other, and a reduction gear set is drivingly connected between the engine output shaft and the generator input shaft.

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

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or 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 apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic diagram of a power system according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of a power system according to another embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of a power system according to another embodiment of the present utility model;

[0022] Figure 4 is a schematic diagram of a power system according to still another embodiment of the present utility model.

[0023] REFERENCE NUMERALS:

[0024] 100, power system;

[0025] 10, front drive assembly;

[0026] 11, engine; 111, engine output shaft; 12, generator; 121, generator input shaft;

[0027] 13, torque converter; 131, torque converter output shaft;

[0028] 14, front reduction assembly; 141, first reduction gear; 142, second reduction gear; 143, third reduction gear;

[0029] 15, front differential;

[0030] 16, transmission; 161, sun gear; 162, planet gear; 163, planet carrier; 164, ring gear; 165, first clutch; 166, second clutch; 167, transmission output shaft; 168, transmission housing;

[0031] 17. First connection and disconnection device; 18. Second connection and disconnection device; 19. Reduction gear set;

[0032] 20. Rear drive assembly;

[0033] 21. Drive motor;

[0034] 22. Rear reduction assembly; 221. Fourth reduction gear; 222. Fifth reduction gear; 223. Sixth reduction gear;

[0035] 23. Rear differential;

[0036] 30. Front axle half shaft; 40. Rear axle half shaft. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0038] Next, with reference to Figures 1-4 Describe the power system 100 according to the embodiments of the present utility model. The power system 100 can be applied to a vehicle.

[0039] Combined with Figures 1-4 As shown, the power system 100 according to the present utility model may mainly include: a front drive assembly 10 and a rear drive assembly 20. By selectively operating the front drive assembly 10 and the rear drive assembly 20, front-wheel drive, rear-wheel drive, or four-wheel drive of the power system 100 can be achieved.

[0040] Among them, the front drive assembly 10 may mainly include: an engine 11, a generator 12, a torque converter 13, and a front differential 15. The generator 12 is selectively connected to the engine 11 in a transmission manner. The torque converter 13 is selectively connected to the generator 12 in a transmission manner. The front differential 15 is selectively connected to the torque converter 13 in a transmission manner. The front differential 15 is adapted to be connected to the left and right front wheels of the vehicle.

[0041] In addition, the rear drive assembly 20 may mainly include: a drive motor 21 and a rear differential 23. The drive motor 21 and the rear differential 23 are connected in a transmission manner. The rear differential 23 is adapted to be connected to the left and right rear wheels of the vehicle.

[0042] Specifically, by making the front drive assembly 10 include: an engine 11, a generator 12, a torque converter 13, and a front differential 15, and the generator 12 is selectively connected to the engine 11 in a transmission manner, the torque converter 13 is selectively connected to the generator 12 in a transmission manner, and the front differential 15 is selectively connected to the torque converter 13 in a transmission manner. In this way, the power of the engine 11 can be selectively transmitted to the front axle half shaft 30 through the generator 12, the torque converter 13, and the front differential 15 in sequence, so as to drive the left and right front wheels of the vehicle.

[0043] Among them, due to the torque output characteristics of the torque converter 13, the torque converter 13 can decouple the speed from the engine 11 and the vehicle speed, so that the appropriate vehicle speed and speed can be output to the front axle half shaft 30, which can avoid the problem that the vehicle cannot use the engine 11 direct drive when driving at a low speed, so that the engine 11 direct drive in the full speed range can be realized, and the reliability of the power system 100 can be improved. In addition, in this way, the front drive assembly 10 can also have the ability to generate electricity while driving, which not only meets the driving requirements, but also can supply power to the rear drive assembly 20, so that the four-wheel drive function in all scenarios and all speed ranges can be realized.

[0044] Optionally, the torque converter 13 may be a hydraulic torque converter. Optionally, a hydraulic coupling without a torque conversion function or other hydraulic couplings with differential transmission torque and locking functions may be used to replace the torque converter 13, which will not be described in detail here.

[0045] Moreover, this can replace the front drive motor, which not only reduces the setting of one front drive motor and reduces material costs, but also reduces the drag loss of one front drive motor and reduces energy consumption.

[0046] It should be noted that the generator 12 here can not only convert mechanical energy into electrical energy, store the electrical energy or charge the battery of the vehicle, but also output mechanical energy to provide power for the front drive assembly 10.

[0047] Furthermore, the rear drive assembly 20 may mainly include: a drive motor 21 and a rear differential 23, and the drive motor 21 and the rear differential 23 are connected in a transmission manner, so that the motor can convert electrical energy into mechanical energy, and the power can be transmitted to the rear axle half shaft 40 through the rear differential 23 to achieve driving of the left and right rear wheels. It should be noted that the drive motor 21 here can not only convert electrical energy into mechanical energy to output power, but also can be reversely charged to reduce energy consumption.

[0048] Therefore, by making the front drive assembly 10 include an engine 11, a generator 12, a torque converter 13 and a front differential 15, and making the rear drive assembly 20 include: a drive motor 21 and a rear differential 23, not only can the front drive assembly 10 have the function of direct drive of the engine 11 in the full speed range, thereby improving the working performance of the power system 100, but also the cost and energy consumption can be reduced under the premise of realizing the four-wheel drive function of the power system 100.

[0049] Combination Figure 1 and Figure 3As shown, the torque converter 13 has a torque converter output shaft 131. The front drive assembly 10 may further include a transmission 16. The transmission 16 may mainly include a sun gear 161, planet gears 162, a planet carrier 163, and a ring gear 164. The sun gear 161 is disposed on the torque converter output shaft 131. The planet gears 162 are disposed on the outer periphery of the sun gear 161 and mesh with the sun gear 161. The planet carrier 163 is connected to the planet gears 162. The ring gear 164 is disposed on the outer periphery of the planet gears 162 and meshes with the planet gears 162. The ring gear 164 is selectively engaged with the transmission housing 168. The torque converter output shaft 131 is selectively engaged with the planet carrier 163.

[0050] Specifically, by providing the transmission 16 between the torque converter 13 and the front reduction assembly 14, the power of the torque converter 13 first passes through the transmission 16 and then is transmitted to the front reduction assembly 14. The transmission 16 can change the torque and speed transmitted to the front reduction assembly 14, so that the vehicle can adapt to different driving conditions.

[0051] Further, the transmission 16 can be set as a planetary gear transmission 16. The transmission 16 may mainly include a sun gear 161, planet gears 162, a planet carrier 163, and a ring gear 164. The transmission ratios between the sun gear 161, the planet gears 162, the planet carrier 163, and the ring gear 164 are different, so that the torque and speed of the power transmitted to the front reduction assembly 14 can be changed.

[0052] Specifically, the sun gear 161 is disposed on the torque converter output shaft 131. The planet gears 162 are disposed on the outer periphery of the sun gear 161 and mesh with the sun gear 161. The planet carrier 163 is connected to the planet gears 162. The ring gear 164 is disposed on the outer periphery of the planet gears 162 and meshes with the planet gears 162. And the ring gear 164 is selectively engaged with the transmission housing 168, and the torque converter output shaft 131 is selectively engaged with the planet carrier 163. The planet carrier 163 is connected with a transmission output shaft 167. The transmission output shaft 167 is connected to the front reduction assembly 14. In this way, the transmission 16 can have at least two gears, namely the first gear and the second gear.

[0053] When the ring gear 164 is disconnected from the transmission housing 168 and the torque converter output shaft 131 is engaged with the planet carrier 163, the power from the torque converter output shaft 131 can be sequentially transmitted to the transmission output shaft 167 through the sun gear 161 and the planet carrier 163, and its transmission ratio is 1. At this time, the transmission 16 is in the first gear, and the speed and torque of the transmission output shaft 167 are relatively large.

[0054] When the ring gear 164 is engaged with the transmission housing 168 and the torque converter output shaft 131 is disconnected from the planet carrier 163, the power from the torque converter output shaft 131 can be transmitted to the transmission output shaft 167 sequentially through the sun gear 161 and the planet carrier 163, and its transmission ratio is greater than 1. At this time, the transmission 16 is in the second gear, and the transmission 16 can decelerate and increase the torque of the power from the torque converter 13.

[0055] It should be noted that when the ring gear 164 is disconnected from the transmission housing 168 and the torque converter output shaft 131 is disconnected from the planet carrier 163, the power of the torque converter output shaft 131 cannot be transmitted to the transmission output shaft 167, and the torque converter output shaft 131 idles. At this time, the transmission 16 is in neutral.

[0056] Of course, the transmission 16 can also be a transmission 16 of other structural forms. Even when the transmission 16 is set as a planetary gear transmission 16, planetary gear transmissions 16 of different structures can be selected so that the transmission 16 has a first gear, a second gear, a third gear or more gears. And, the shifting form of the transmission 16 can be shifting by planetary row clutches and brakes or shifting by parallel shaft synchronizers, etc. No specific limitations are made here.

[0057] Combined with Figure 1 and Figure 3 As shown, the transmission 16 may further include: a first clutch 165 and a second clutch 166. The first clutch 165 is provided on the ring gear 164, and the first clutch 165 is selectively engaged with the transmission housing 168. The second clutch 166 is provided on the torque converter output shaft 131, and the second clutch 166 is selectively engaged with the planet carrier 163.

[0058] Specifically, by providing the first clutch 165 on the ring gear 164 and selectively engaging the first clutch 165 with the transmission housing 168, only by controlling the engagement and disengagement of the first clutch 165, the ring gear 164 can be selectively engaged with the transmission housing 168. And, by providing the second clutch 166 on the torque converter output shaft 131 and selectively engaging the second clutch 166 with the planet carrier 163, only by controlling the engagement and disengagement of the second clutch 166, the torque converter output shaft 131 can be selectively engaged with the planet carrier 163.

[0059] In this way, on the premise of ensuring that the transmission 16 can work normally, the structure of the transmission 16 can be made simpler and more reliable, and the transmission 16 can be made more intelligent and controllable.

[0060] Combined with Figures 1-4 As shown, the front drive assembly 10 may further include: a front reduction assembly 14. The front reduction assembly 14 is in transmission cooperation between the transmission 16 and the front differential 15 to achieve the function of decelerating and increasing torque.

[0061] Specifically, the front deceleration assembly 14 may mainly include a first deceleration gear 141, a second deceleration gear 142, and a third deceleration gear 143. The transmission 16 has a transmission output shaft 167, and the transmission output shaft 167 is connected to the planet carrier 163. The first deceleration gear 141 is arranged on the transmission output shaft 167, the third deceleration gear 143 is connected to the front differential 15, and the second deceleration gear 142 is meshed between the first deceleration gear 141 and the third deceleration gear 143.

[0062] In this way, power can be output through the transmission output shaft 167, driving the first deceleration gear 141 to rotate. The first deceleration gear 141 drives the second deceleration gear 142 to rotate, and the second deceleration gear 142 drives the third deceleration gear 143 to rotate, thereby driving the front differential 15 to move. That is, the power output from the transmission 16 is sequentially transmitted to the front differential 15 through the first deceleration gear 141, the second deceleration gear 142, and the third deceleration gear 143, so as to complete the deceleration and torque increase work before the power is transmitted to the front differential 15.

[0063] Combined with Figures 1-4 As shown, the rear drive assembly 20 may further include: a rear deceleration assembly 22, and the rear deceleration assembly 22 is in transmission cooperation between the drive motor 21 and the rear differential 23 to achieve the function of deceleration and torque increase.

[0064] Specifically, the rear deceleration assembly 22 may mainly include a fourth deceleration gear 221, a fifth deceleration gear 222, and a sixth deceleration gear 223. The fourth deceleration gear 221 is arranged on the output shaft of the drive motor 21, the sixth deceleration gear 223 is connected to the rear differential 23, and the fifth deceleration gear 222 is meshed between the fourth deceleration gear 221 and the sixth deceleration gear 223.

[0065] In this way, power can be output through the output shaft of the drive motor 21, driving the fourth deceleration gear 221 to rotate. The fourth deceleration gear 221 drives the fifth deceleration gear 222 to rotate, and the fifth deceleration gear 222 drives the sixth deceleration gear 223 to rotate, thereby driving the rear differential 23 to move. That is, the power output from the drive motor 21 is sequentially transmitted to the rear differential 23 through the fourth deceleration gear 221, the fifth deceleration gear 222, and the sixth deceleration gear 223, so as to complete the deceleration and torque increase work before the power is transmitted to the rear differential 23.

[0066] It should be noted that the fifth reduction gear 222 can be a single gear, which is meshed between the fourth reduction gear 221 and the sixth reduction gear 223. The fifth reduction gear 222 can also include two gears with the same axis but different numbers of teeth, where one gear is meshed with the fourth reduction gear 221 and the other gear is meshed with the sixth reduction gear 223 to further reduce speed and increase torque.

[0067] As described above, through the architecture of the power system 100 of the present application, the power system 100 of the present application has at least four driving modes, namely, pure electric driving mode, series (range extender) driving mode, direct driving mode of the engine 11, and four-wheel driving mode. The power system 100 can switch between these four driving modes to adapt to the driving requirements of the vehicle under different working conditions.

[0068] When the power system 100 is in the pure electric driving mode, the vehicle is independently driven by the rear drive assembly 20.

[0069] When the power system 100 is in a certain state, the transmission 16 is put in neutral, the torque converter 13 is locked, and the engine 11 drives the generator 12 to convert mechanical energy into electrical energy. The electrical energy flows to the drive motor 21 to drive the vehicle or charge the battery, etc., for one or more energy flows.

[0070] When the power system 100 is in the direct driving mode of the engine 11, the transmission 16 selects the target gear position, the torque converter 13 is locked, and the engine 11 directly drives the vehicle through the torque converter 13 and the transmission 16.

[0071] When the power system 100 is in the four-wheel driving mode, the transmission 16 selects the target gear position, and the torque converter 13 selects to lock or open according to conditions such as vehicle speed to achieve direct driving of the engine 11 to the left and right front wheels. And the rear drive assembly 20 outputs the target torque according to the four-wheel drive torque distribution. In addition, the generator 12 can perform power generation or drive control according to conditions such as the state of charge of the battery and the torque demand of the front axle.

[0072] In some other embodiments of the present invention, in combination with Figure 2 and Figure 4 As shown, the torque converter 13 has a torque converter output shaft 131, and a first connection and disconnection device 17 is provided on the torque converter output shaft 131. The first connection and disconnection device 17 is selectively engaged with the front reduction assembly 14.

[0073] Specifically, the power of the torque converter 13 flows out from the torque converter output shaft 131. Different from setting a transmission 16 between the torque converter output shaft 131 and the front reduction assembly 14, by connecting the first connection and disconnection device 17 between the torque converter output shaft 131 and the front reduction assembly 14, the selective connection between the torque converter output shaft 131 and the front reduction assembly 14 can be realized through the connection or disconnection of the first connection and disconnection device 17, so as to realize the selective transmission connection between the torque converter 13 and the front reduction assembly 14, and the structure is simple and reliable.

[0074] When the first connection and disconnection device 17 connects the torque converter output shaft 131 and the front reduction assembly 14, the power of the engine 11 can be transmitted to the front axle half shaft 30 in sequence through the generator 12, the torque converter 13, the first connection and disconnection device 17, the front reduction assembly 14, and the front differential 15, so as to realize the drive of the left and right front wheels of the vehicle.

[0075] When the first connection and disconnection device 17 disconnects the torque converter output shaft 131 and the front reduction assembly 14, the engine 11 drives the generator 12 to convert mechanical energy into electrical energy, and the electrical energy flows to the drive motor 21 of the rear drive assembly 20 to drive the vehicle, or flows to the battery for charging and other one or more energy flows.

[0076] Optionally, the first connection and disconnection device 17 can be at least one of a synchronizer, a hydraulic clutch, and an electromagnetic clutch, so that the first connection and disconnection device 17 can be made simpler and more reliable, the structure of the power system 100 can be made simpler and more reliable, and the architecture cost of the power system 100 can be reduced.

[0077] In other embodiments of the present invention, in combination Figure 3 As shown, the engine 11 has an engine output shaft 111, the generator 12 has a generator input shaft 121, a second connection and disconnection device 18 is provided on the engine output shaft 111, and the second connection and disconnection device 18 is selectively engaged with the generator input shaft 121.

[0078] Specifically, the power of the engine 11 flows out from the engine output shaft 111, and the power transmitted to the generator 12 will first pass through the generator input shaft 121. By providing a second connection and disconnection device 18 between the engine output shaft 111 and the generator input shaft 121, the selective connection between the engine output shaft 111 and the generator input shaft 121 can be realized through the connection or disconnection of the second connection and disconnection device 18, and the selective transmission connection between the engine 11 and the generator 12 can be realized. Among them, the clutch and the rotor of the generator 12 can be integrated, so that the volume of the power system 100 can be reduced and the weight of the power system 100 can be reduced.

[0079] When the second connecting and disconnecting device 18 connects the engine output shaft 111 and the generator input shaft 121, the power of the engine 11 can be normally transmitted to the generator 12, so that the generator 12 can work normally and convert mechanical energy into electrical energy.

[0080] When the second disconnecting device 18 disconnects the engine output shaft 111 and the generator input shaft 121, the engine 11 can be stopped from working and the generator 12 can be operated, so that the front drive assembly 10 can output mechanical power using electrical energy and cooperate with the operation of the rear drive assembly 20, so that the power system 100 can have a pure electric four-wheel drive mode, which can expand the application scenarios of the vehicle.

[0081] Optionally, the second connecting and disconnecting device 18 can be at least one of a synchronizer, a hydraulic clutch and an electromagnetic clutch, which can make the first connecting and disconnecting device 17 simpler and more reliable, make the structure of the power system 100 simpler and more reliable, and reduce the architectural cost of the power system 100.

[0082] In some embodiments of the present invention, Figures 1-3 As shown, the engine 11 has an engine output shaft 111 , and the generator 12 has a generator input shaft 121 , and the engine output shaft 111 and the generator input shaft 121 are coaxially arranged.

[0083] Specifically, the power of the engine 11 flows out from the engine output shaft 111, and the power transmitted to the generator 12 will first pass through the generator input shaft 121. By arranging the engine output shaft 111 and the generator input shaft 121 coaxially, the transmission connection between the engine 11 and the generator 12 can be achieved, and the power of the engine 11 can be directly transmitted to the generator 12, which can not only simplify the structure of the power system 100, reduce the spatial size of the power system 100, and facilitate the arrangement of the power system 100 on different platform models, but also make the path for the power of the engine 11 to be transmitted to the generator 12 simpler, thereby improving the transmission efficiency of the power system 100, and making the engine 11 directly drive the generator 12, and the power generation path of the generator 12 is shorter, thereby improving the power generation efficiency of the power system 100.

[0084] In other embodiments of the present invention, Figure 4 As shown, the engine 11 has an engine output shaft 111, and the generator 12 has a generator input shaft 121. The engine output shaft 111 and the generator input shaft 121 are arranged at an interval and parallel to each other, and a reduction gear set 19 is transmission-connected between the engine output shaft 111 and the generator input shaft 121.

[0085] Specifically, the power of the engine 11 flows out from the engine output shaft 111, and the power transmitted to the generator 12 will first pass through the generator input shaft 121. By arranging the engine output shaft 111 and the generator input shaft 121 at intervals and in parallel with each other, a reduction gear set 19 is connected between the engine output shaft 111 and the generator input shaft 121, so that the transmission connection between the engine 11 and the generator 12 can be achieved, and the power of the engine 11 can be reduced in speed and torque increased under the action of the reduction gear set 19, and then transmitted to the generator 12, so that the generator 12 can be protected from damage caused by high speed, thereby optimizing the architecture of the power system 100 and improving the reliability of the power system 100.

[0086] It should be noted that the generator 12 can be an axial motor or a radial motor, which is not specifically limited here. Also, the specific arrangement of the engine 11 and the generator 12 can be selected according to actual conditions, which is also not specifically limited here.

[0087] The vehicle according to the utility model may mainly include: the above-mentioned power system 100. Specifically, by applying the power system 100 to the vehicle, the energy consumption and cost of the vehicle can be reduced, and the driving reliability of the vehicle can be improved while the vehicle has a four-wheel drive function, thereby improving the product competitiveness of the vehicle and enhancing the user experience.

[0088] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0090] Although the embodiments of the present utility model 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 spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A power system, characterized in that: include: A front drive assembly (10), the front drive assembly (10) comprising: an engine (11), a generator (12), a torque converter (13) and a front differential (15), the generator (12) being selectively transmission-connected to the engine (11); the torque converter (13) being selectively transmission-connected to the generator (12); the front differential (15) being selectively transmission-connected to the torque converter (13); the front differential (15) being suitable for being connected to the left and right front wheels of a vehicle; A rear drive assembly (20), the rear drive assembly (20) comprising: a drive motor (21) and a rear differential (23), the drive motor (21) and the rear differential (23) being transmission-connected, and the rear differential (23) being suitable for being connected to the left and right rear wheels of a vehicle.

2. The power system according to claim 1, characterized in that: The torque converter (13) has a torque converter output shaft (131). The front drive assembly (10) also includes a transmission (16). The transmission (16) includes a sun gear (161), planetary gears (162), a planetary carrier (163) and a ring gear (164). The sun gear (161) is arranged on the torque converter output shaft (131). The planetary gears (162) are arranged on the outer periphery of the sun gear (161) and mesh with the sun gear (161). The planetary carrier (163) is connected to the planetary gears (162). The ring gear (164) is arranged on the outer periphery of the planetary gears (162) and mesh with the planetary gears (162). The ring gear (164) is selectively engaged with a transmission housing (168). The torque converter output shaft (131) is selectively engaged with the planetary carrier (163).

3. The power system according to claim 2, characterized in that: The transmission (16) further comprises: a first clutch (165) and a second clutch (166), wherein the first clutch (165) is arranged on the ring gear (164), and the first clutch (165) is selectively engaged with the transmission housing (168), and the second clutch (166) is arranged on the torque converter output shaft (131), and the second clutch (166) is selectively engaged with the planet carrier (163).

4. The power system according to claim 2, characterized in that: The front drive assembly (10) further includes: a front reduction assembly (14), the front reduction assembly (14) including a first reduction gear (141), a second reduction gear (142) and a third reduction gear (143); the transmission (16) has a transmission output shaft (167), the transmission output shaft (167) is connected to the planet carrier (163), the first reduction gear (141) is arranged on the transmission output shaft (167), the third reduction gear (143) is connected to the front differential (15), and the second reduction gear (142) is meshed between the first reduction gear (141) and the third reduction gear (143).

5. The power system according to claim 1, characterized in that: The rear drive assembly (20) further includes: a rear reduction gear assembly (22), the rear reduction gear assembly (22) including a fourth reduction gear (221), a fifth reduction gear (222) and a sixth reduction gear (223), the fourth reduction gear (221) being arranged on the output shaft of the drive motor (21), the sixth reduction gear (223) being connected to the rear differential (23), and the fifth reduction gear (222) being meshed between the fourth reduction gear (221) and the sixth reduction gear (223).

6. The power system according to claim 4, characterized in that: The torque converter (13) has a torque converter output shaft (131), and a first connecting and disconnecting device (17) is arranged on the torque converter output shaft (131). The first connecting and disconnecting device (17) is selectively engaged with the front reduction assembly (14).

7. The power system according to claim 1, characterized in that: The engine (11) has an engine output shaft (111), the generator (12) has a generator input shaft (121), and a second connecting and disconnecting device (18) is provided on the engine output shaft (111), and the second connecting and disconnecting device (18) is selectively engaged with the generator input shaft (121).

8. The power system according to claim 1, characterized in that: The engine (11) has an engine output shaft (111), the generator (12) has a generator input shaft (121), and the engine output shaft (111) and the generator input shaft (121) are coaxially arranged.

9. The power system according to claim 1, characterized in that: The engine (11) has an engine output shaft (111), and the generator (12) has a generator input shaft (121). The engine output shaft (111) and the generator input shaft (121) are arranged at an interval and are parallel to each other. A reduction gear set (19) is transmission-connected between the engine output shaft (111) and the generator input shaft (121).

10. A vehicle, characterized in that: include: The power system (100) according to any one of claims 1 to 9.

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