Power system and vehicle

Abstract

The utility model relates to the technical field of driving, in particular to a power system and a vehicle. The power system comprises an engine and a first motor, the first motor comprises a motor rotor, and the motor rotor is connected with an engine output shaft of the engine; the motor rotor is suitable for being connected with a power output shaft so as to output power of the engine to the power output shaft. The engine output shaft of the engine is connected with the motor rotor of the first motor, and the engine is directly connected with the first motor, so that the axial size of the power system can be effectively shortened, and the power system can be conveniently arranged on a vehicle; and power loss caused by power transmission of gears and the like is reduced, the efficiency of a power system can be improved, and the power generation efficiency is improved.

Description

Technical Field

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

[0002] A hybrid power system is a power system that combines a traditional internal combustion engine and an electric motor, which can optimize performance and efficiency under different driving conditions, improve fuel efficiency and reduce emissions, etc. However, the current hybrid power system has the defect of being too long in axial dimension and not being easy to be arranged in a whole vehicle. Summary of the Utility Model

[0003] An embodiment of the utility model provides a power system and a vehicle to solve the technical problem that the hybrid power system in the prior art is too long in axial dimension and not easy to be arranged in a whole vehicle.

[0004] In a first aspect, an embodiment of the utility model provides a power system, which includes an engine and a first motor. The first motor includes a motor rotor, and the motor rotor is connected to the engine output shaft of the engine; the motor rotor is adapted to be connected to a power output shaft to output the power of the engine to the power output shaft.

[0005] Optionally, the motor rotor includes a rotor main body; along the axis direction of the engine output shaft, one end of the rotor main body is connected to the engine output shaft.

[0006] Optionally, the power system further includes: a clutch, which is connected to the motor rotor and is adapted to be connected to the power output shaft; the clutch is used to couple or decouple the engine output shaft and the power output shaft through the motor rotor.

[0007] Optionally, the clutch is arranged inside the motor rotor.

[0008] Optionally, the motor rotor is provided with an installation cavity, and the clutch is arranged in the installation cavity.

[0009] Optionally, the clutch includes at least one on-off unit, and the on-off unit can switch between an engaged state and a disconnected state.

[0010] Optionally, the on-off unit includes a driving component and a driven component; the driving component is connected to the motor rotor, the driven component is adapted to be connected to the power output shaft, and the driving component and the driven component can be engaged or separated.

[0011] Optionally, the on-off unit further includes an on-off unit driving part, and the on-off unit driving part can make the driving component and the driven component engaged or disconnected.

[0012] Optionally, the on-off unit includes a first on-off unit, and the first on-off unit includes a first active component and a first driven component; the power output shaft includes a first power output shaft; the first active component is connected to the motor rotor, and the first driven component is adapted to be connected to the first power output shaft.

[0013] Optionally, the on-off unit further includes a second on-off unit, and the second on-off unit includes a second active component and a second driven component; the power output shaft further includes a second power output shaft; the second active component is connected to the motor rotor, and the second driven component is adapted to be connected to the second power output shaft.

[0014] Optionally, the engine output shaft, the first power output shaft, and the second power output shaft are coaxial and arranged along a first direction of the vehicle.

[0015] Optionally, the power system further includes: at least one transmission component, the transmission component is connected to the power output shaft and is adapted to be in transmission connection with a first output end, and the transmission component is used to output the power of the engine to the first output end through the power output shaft.

[0016] Optionally, the transmission component includes a first transmission component and a second transmission component, and the transmission ratio of the first transmission component is not equal to the transmission ratio of the second transmission component; the on-off unit includes a first on-off unit and a second on-off unit; the power output shaft includes a first power output shaft and a second power output shaft, the first power output shaft is connected to the first on-off unit, and the second power output shaft is connected to the second on-off unit; the first transmission component is connected to the first power output shaft, and the second transmission component is connected to the second power output shaft.

[0017] Optionally, the first transmission component includes a first driving gear and a first driven gear that mesh with each other; the first driving gear is arranged on the first power output shaft, and the first driven gear is adapted to be in transmission connection with the first output end; the second transmission component includes a second driving gear and a second driven gear that mesh with each other; the second driving gear is arranged on the second power output shaft, and the second driven gear is adapted to be in transmission connection with the first output end.

[0018] Optionally, the first on-off unit includes a first active component and a first driven component, and the second on-off unit includes a second active component and a second driven component; the first power output shaft is connected to the first driven component, and the first driving gear is coaxially arranged with the first driven component; the second power output shaft is connected to the second driven component, and the second driving gear is coaxially arranged with the second driven component.

[0019] Optionally, the first driven gear and the second driven gear are coaxially arranged.

[0020] Optionally, there is one each of the on-off unit, the power output shaft, and the transmission assembly.

[0021] The power output shaft includes a fourth power output shaft, and the transmission assembly includes a fourth driving gear and a fourth driven gear that mesh with each other; the fourth power output shaft is connected to the driven assembly of the on-off unit, the fourth driving gear is provided on the fourth power output shaft, and the fourth driven gear is adapted to be drivingly connected to the first output end.

[0022] Optionally, the engine output shaft and the fourth power output shaft are coaxial and arranged along the first direction of the vehicle.

[0023] Optionally, the power system further includes an output assembly, the output assembly is provided between the at least one transmission assembly and the first output end, the input end of the output assembly is drivingly connected to the transmission assembly, and the output end of the output assembly is drivingly connected to the first output end.

[0024] Optionally, the power system further includes a second motor, and the second motor is drivingly connected to the input end of the output assembly.

[0025] Optionally, the engine output shaft and the second motor output shaft of the second motor are parallel and offset; both the engine output shaft and the second motor output shaft extend along the first direction of the vehicle.

[0026] Optionally, the input end of the output assembly is an output gear, the output gear meshes with the driven gear of the transmission assembly, and also meshes with the motor driving gear on the second motor output shaft of the second motor.

[0027] Optionally, the output assembly further includes a driven output shaft and a driving bevel gear and a driven bevel gear that mesh with each other; the output gear and the driving bevel gear are provided on the driven output shaft; the driven bevel gear is the output end of the output assembly.

[0028] Optionally, the driven output shaft is arranged along the first direction of the vehicle.

[0029] Optionally, the power system further includes a first differential, and the first differential is drivingly connected between the output end of the output assembly and the first output end.

[0030] Optionally, the power system further includes a power battery, which is electrically connected to the first motor and the second motor respectively; the power battery is located at the rear side of the vehicle, the engine is located at the front side of the vehicle, and the power system is located between the power battery and the engine.

[0031] Optionally, the power system further includes a rear drive electric axle, which is electrically connected to the power battery and is adapted to be connected to the second output end of the vehicle.

[0032] Optionally, the rear drive electric axle includes a third motor, a speed reducer and a second differential. The third motor is electrically connected to the power battery; the input end of the speed reducer is connected to the third motor output shaft of the third motor; the second differential is drivingly connected between the output end of the speed reducer and the second output end.

[0033] Optionally, the power system further includes a controller, which is connected to the clutch.

[0034] Optionally, the power system has a first operating condition and a second operating condition; in the first operating condition, the controller controls the clutch to couple or decouple the engine output shaft and the power output shaft, so that the engine outputs power or interrupts power output; in the second operating condition, the controller controls the second motor to output power or interrupt power output; the power system has the first operating condition or the second operating condition; or, the power system has both the first operating condition and the second operating condition at the same time.

[0035] Optionally, the power system further has a third operating condition; in the third operating condition, the controller controls the clutch to decouple the engine output shaft and the power output shaft through the motor rotor. The motor rotor rotates driven by the engine output shaft to generate electric energy, and the electric energy is transmitted to the power battery; the controller controls the second motor to use the electric energy of the power battery to output power or interrupt power output.

[0036] Optionally, the first motor is a flat motor.

[0037] Optionally, the engine output shaft extends along the front-rear direction of the vehicle.

[0038] In a second aspect, an embodiment of the present invention further provides a vehicle, which includes a vehicle body and the power system as described above, and the vehicle body is connected to the power system.

[0039] Regarding the prior art, the present invention has the following advantages:

[0040] In the power system according to the embodiment of the present utility model, the engine output shaft of the engine is connected to the motor rotor of the first motor, that is, the engine is directly connected to the first motor, which can effectively shorten the axial dimension of the power system and facilitate the layout of the power system on the vehicle; and reduce the power loss caused by power transmission such as gears, improve the efficiency of the power system, and enhance the power generation efficiency.

[0041] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically illustrates the specific embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments.

[0043] Figure 1 It is a partial connection schematic diagram of a power system of the present utility model;

[0044] Figure 2 It is a partial connection schematic diagram of another power system of the present utility model;

[0045] Figure 3 It is a schematic diagram of gear meshing in a power system of the present utility model;

[0046] Figure 4 It is a schematic diagram of the connection between the clutch and the motor rotor in a power system of the present utility model;

[0047] Figure 5 It is a connection schematic diagram of a power system of the present utility model;

[0048] Figure 6 It is a connection schematic diagram of another power system of the present utility model;

[0049] Figures 7 to 9 It is a schematic diagram of the working state of the pure electric mode of a power system of the present utility model;

[0050] Figures 10 to 13 It is a schematic diagram of the working state of the engine direct drive mode of a power system of the present utility model;

[0051] Figures 14 to 16 It is a schematic diagram of the working state of the series mode of a power system of the present utility model;

[0052] Figures 17 to 20 It is a schematic diagram of the working state of the parallel mode of a power system of the present utility model.

[0053] 10 - Engine; 11 - Engine output shaft;

[0054] 20 - First motor; 21 - Motor stator; 22 - Motor rotor; 221 - Installation cavity;

[0055] 3 - Clutch; 31 - First on - off unit; 311 - First driving component; 312 - First driven component; 32 - Second on - off unit; 321 - Second driving component; 322 - Second driven component;

[0056] 41 - First power output shaft; 42 - Second power output shaft; 43 - Third output shaft; 44 - Fourth power output shaft; 45 - Fifth output shaft; 46 - Driven output shaft; 47 - Front output shaft; 48 - Rear output shaft;

[0057] 51 - First driving gear; 52 - First driven gear; 53 - Second driving gear; 54 - Second driven gear; 55 - Fourth driving gear; 56 - Fourth driven gear; 57 - Output gear; 58 - Driving bevel gear; 59 - Driven bevel gear;

[0058] 70 - Second motor; 71 - Motor output shaft; 72 - Motor driving gear;

[0059] 80 - First differential; 81 - Torsional shock absorber; 82 - Front wheels; 83 - Rear wheels; 84 - Power battery; 85 - Rear - drive electric axle. Detailed implementation manners

[0060] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0061] An embodiment of the present application provides a power system, which is adapted to output power to a first output end and a second output end, so that the front wheels 82 in the first output end rotate, and the rear wheels 83 in the second output end rotate.

[0062] Refer to Figures 1 to 20 As shown, the power system includes an engine 10 and a first motor 20. The first motor 20 includes a motor rotor 22, and the motor rotor 22 is connected to the engine output shaft 11 of the engine 10; the motor rotor 22 is adapted to be connected to a power output shaft to output the power of the engine 10 to the power output shaft.

[0063] Among them, the engine 10 is a machine that can convert other forms of energy into mechanical energy. For example, it burns fuels such as gasoline, diesel, and hydrogen to convert them into mechanical energy.

[0064] In the power system of the embodiment of the present application, the engine output shaft 11 of the engine 10 is connected to the motor rotor 22 of the first motor 20. The direct connection between the engine 10 and the first motor 20 can effectively shorten the axial dimension of the power system (the length of the power system in the axial direction of the engine output shaft 11 is the axial dimension of the power system), which is convenient for the layout of the power system on the vehicle; and it reduces the power loss caused by power transmission such as gears, which can improve the efficiency of the power system and the power generation efficiency.

[0065] The power system of the embodiment of the present application can be a longitudinally arranged power system. In the longitudinally arranged power system, the engine output shaft 11 of the engine 10 extends along the front-rear direction of the vehicle. It can shorten the dimension of the power system in the front-rear direction of the vehicle and improve the space utilization rate.

[0066] The power output shaft is the power output part of the vehicle and is used to connect to the wheels to drive the wheels to rotate.

[0067] Furthermore, the first motor 20 further includes a motor stator 21. The motor stator 21 is connected to the housing of the power system. The motor stator 21 surrounds the outer periphery of the motor rotor 22 and is spaced apart from the motor rotor 22.

[0068] In some embodiments, the first motor 20 is a flat motor. The flat motor has the characteristics of relatively small thickness, large width and length. The thickness direction of the flat motor is the same as the axial direction of the engine output shaft 11. The flat motor is directly connected to the engine 10. Since the thickness of the flat motor is relatively small, the axial dimension of the power system is further shortened.

[0069] In some embodiments, the motor rotor 22 includes a rotor main body; along the axial direction of the engine output shaft 11, one end of the rotor main body is connected to the engine output shaft 11, so that the motor rotor 22 is directly connected to the engine 10.

[0070] In some embodiments, the power system further includes a clutch 3. The clutch 3 is connected to the motor rotor 22 and is adapted to connect to the power output shaft; the clutch 3 is used to couple or decouple the engine output shaft 11 and the power output shaft through the motor rotor 22. When the clutch 3 couples the engine output shaft 11 and the power output shaft through the motor rotor 22, the power of the engine can be output to the power output shaft. When the clutch 3 decouples the engine output shaft 11 and the power output shaft through the motor rotor 22, the power of the engine will not be output to the power output shaft.

[0071] In some embodiments, the clutch 3 is disposed inside the motor rotor 22.

[0072] In the embodiments of the present application, disposing the clutch 3 inside the motor rotor 22 can further shorten the axial dimension of the power system, improve the integration degree of the power system, and has the advantages of reducing the size and weight.

[0073] In some embodiments, the motor rotor 22 is provided with an installation cavity 221, and the clutch 3 is disposed in the installation cavity 221, and the installation cavity 221 is used for assembling the clutch 3.

[0074] Since the clutch 3 is disposed in the installation cavity 221, it is possible to save the length in the axial direction of the engine output shaft 11 and the width in the direction perpendicular to the axis of the engine output shaft 11 required when the clutch 3 is separately provided, thereby achieving the purpose of shortening the axial dimension and the radial dimension of the power system, greatly improving the integration degree of the power system, reducing the weight and the layout space of the drive system, and the reduced layout space can be used more for the layout of the power battery 84 to increase the capacity of the power battery 84, so as to increase the pure electric range of the power system.

[0075] In some embodiments, the clutch 3 includes at least one on-off unit, and the on-off unit can be switched between an engaged state and a disengaged state. When the on-off unit is in the engaged state, the clutch 3 couples the engine output shaft 11 and the power output shaft through the motor rotor 22. When the on-off unit is in the disengaged state, the clutch 3 decouples the engine output shaft 11 and the power output shaft through the motor rotor 22.

[0076] In some embodiments, the on-off unit includes a driving component and a driven component; the driving component is connected to the motor rotor 22, the driven component is adapted to be connected to the power output shaft, and the driving component and the driven component can be engaged or separated. When the driving component and the driven component are engaged, the on-off unit is in the engaged state. When the driving component and the driven component are separated, the on-off unit is in the disengaged state.

[0077] In some embodiments, the on-off unit further includes an on-off unit driving member, and the on-off unit driving member can engage or disengage the driving component and the driven component. Among them, the manner in which the on-off unit driving member drives the driving component and the driven component to engage or disengage can be selected according to the use requirements. For example, the on-off unit driving member drives the driving component and the driven component to engage or disengage in a hydraulic manner. Driving the driving component and the driven component to engage or disengage in a hydraulic manner belongs to conventional technology, and the embodiments of the present application will not elaborate.

[0078] In some embodiments, the active component includes an outer disk hub and outer friction plates arranged along the circumferential direction of the outer disk hub, and the driven component includes an inner disk hub and inner friction plates arranged along the circumferential direction of the inner disk hub. When the driven component and the active component are engaged, the outer friction plates and the inner friction plates are connected. When the driven component and the active component are disconnected, the outer friction plates and the inner friction plates are separated. Among them, the inner disk hub is adapted to be connected to the on-off unit driving member.

[0079] In some embodiments, the on-off unit includes a first on-off unit 31, and the first on-off unit 31 includes a first active component 311 and a first driven component 312; the power output shaft includes a first power output shaft 41; the first active component 311 is connected to the motor rotor 22, and the first driven component 312 is adapted to be connected to the first power output shaft 41. When the first active component 311 and the first driven component 312 are engaged, the power of the engine can be output to the first power output shaft 41. When the first active component 311 and the first driven component 312 are disconnected, the power of the engine will not be output to the first power output shaft 41.

[0080] In some embodiments, the on-off unit further includes a second on-off unit 32, and the second on-off unit 32 includes a second active component 321 and a second driven component 322; the power output shaft further includes a second power output shaft 42; the second active component 321 is connected to the motor rotor 22, and the second driven component 322 is adapted to be connected to the second power output shaft 42. When the second active component 321 and the second driven component 322 are engaged, the power of the engine can be output to the second power output shaft 42. When the second active component 321 and the second driven component 322 are disconnected, the power of the engine will not be output to the second power output shaft 42.

[0081] In the above structure of the present application, when the on-off unit includes the first on-off unit 31 and the second on-off unit 32, the clutch 3 is a dual clutch, the engine output shaft 11 and the motor rotor 22 are connected as the active part of the clutch 3, and the first power output shaft 41 and the second power output shaft 42 are used as the driven parts to output the power of the engine. There is no idle rotation of redundant gears or the like between the engine 10 and the first power output shaft 41 and the second power output shaft 42, and the power system has the advantage of higher efficiency.

[0082] In some embodiments, the engine output shaft 11, the first power output shaft 41 and the second power output shaft 42 are coaxial and arranged along the first direction of the vehicle. Among them, the first direction of the vehicle is the same as the axis direction of the engine output shaft 11, both of which are the front-rear direction of the vehicle. At this time, the engine output shaft 11, the first power output shaft 41 and the second power output shaft 42 are longitudinally arranged.

[0083] In some embodiments, the power system further includes at least one transmission assembly. The transmission assembly is connected to the power output shaft and is adapted to be drivingly connected to the first output end. The transmission assembly is configured to output the power of the engine 10 to the first output end through the power output shaft.

[0084] Further, the transmission assembly is configured to conduct the power output by the engine 10 through the motor rotor 22, the driving assembly, the driven assembly, and the power output shaft when the driving assembly and the driven assembly are engaged.

[0085] In some embodiments, the transmission assembly includes a first transmission assembly and a second transmission assembly, and the transmission ratio of the first transmission assembly is not equal to that of the second transmission assembly; the on-off unit includes a first on-off unit 31 and a second on-off unit 32; the power output shaft includes a first power output shaft 41 and a second power output shaft 42. The first power output shaft 41 is connected to the first on-off unit 31, and the second power output shaft 42 is connected to the second on-off unit 32; the first transmission assembly is connected to the first power output shaft 41, and the second transmission assembly is connected to the second power output shaft 42. The above structure of the power system enables the power system to have two gears, and an appropriate gear can be selected according to different usage requirements to achieve power output.

[0086] In some embodiments, the first transmission assembly includes a first driving gear 51 and a first driven gear 52 that mesh with each other; the first driving gear 51 is provided on the first power output shaft 41, and the first driven gear 52 is adapted to be drivingly connected to the first output end. In the above structure of the embodiment of the present application, the power of the engine 10 is output to the first output end through the first power output shaft 41 and the first driven gear 52 that meshes with the first driving gear 51.

[0087] Moreover, the second transmission assembly includes a second driving gear 53 and a second driven gear 54 that mesh with each other; the second driving gear 53 is provided on the second power output shaft 42, and the second driven gear 54 is adapted to be drivingly connected to the first output end. In the above structure of the embodiment of the present application, the power of the engine 10 is output to the first output end through the second power output shaft 42 and the second driven gear 54 that meshes with the second driving gear 53.

[0088] The above structure of the power system enables the power system to achieve the first gear through the first power output shaft 41, the first driving gear 51, and the first driven gear 52, and to achieve the second gear through the second power output shaft 42, the second driving gear 53, and the second driven gear 54.

[0089] In some embodiments, the first on-off unit 31 includes a first active component 311 and a first driven component 312, and the second on-off unit 32 includes a second active component 321 and a second driven component 322; the first power output shaft 41 is connected to the first driven component 312, and the first driving gear 51 is coaxially arranged with the first driven component 312; the second power output shaft 42 is connected to the second driven component 322, and the second driving gear 53 is coaxially arranged with the second driven component 322.

[0090] In the embodiment of the present application, the first driving gear 51 and the first driven assembly 312 are respectively arranged on the first power output shaft 41, the first driving gear 51 and the first driven assembly 312 are coaxially arranged, and the first driving gear 51 and the first driven assembly 312 rotate synchronously, so that the power of the engine 10 is output to the first output end through the first driven gear 52 meshing with the first driving gear 51. In the embodiment of the present application, one end of the first power output shaft 41 is connected to the first driven assembly 312, and the first driving gear 51 is arranged on the first power output shaft 41.

[0091] The second driving gear 53 and the second driven assembly 322 are respectively arranged on the second power output shaft 42, the second driving gear 53 and the second driven assembly 322 are coaxially arranged, and the second driving gear 53 and the second driven assembly 322 rotate synchronously, so that the power of the engine 10 is output to the first output end through the second driven gear 54 meshing with the second driving gear 53. In the embodiment of the present application, one end of the second power output shaft 42 is connected to the second driven assembly 322, and the second driven gear 54 is arranged on the second power output shaft 42.

[0092] The transmission ratio of the first driving gear 51 and the first driven gear 52 is different from the transmission ratio of the second driving gear 53 and the second driven gear 54, so that the transmission ratio of the first transmission assembly is not equal to the transmission ratio of the second transmission assembly.

[0093] Further references Figure 4 As shown, the second power output shaft 42 is sleeved on the outside of the first power output shaft 41 , and the axis of the second power output shaft 42 coincides with the axis of the first power output shaft 41 .

[0094] In some embodiments, the first driven gear 52 and the second driven gear 54 are coaxially arranged. The first driven gear 52 and the second driven gear 54 rotate synchronously, and then one of the first driven gear 52 or the second driven gear 54 is connected to the first output end in a transmission connection, so that the first driven gear 52 is connected to the first output end in a transmission connection, and the second driven gear 54 is connected to the first output end in a transmission connection, which can reduce the setting of gears, etc., and the power system structure is simpler.

[0095] In some embodiments, there is one on-off unit, one power output shaft, and one transmission assembly. The power output shaft includes a fourth power output shaft 44, and the transmission assembly includes a meshing fourth driving gear 55 and a fourth driven gear 56. The fourth power output shaft 44 is connected to the driven assembly of the on-off unit. The fourth driving gear 55 is provided on the fourth power output shaft 44, and the fourth driven gear 56 is provided on the fifth output shaft 45. The fourth driven gear 56 is adapted to be drivingly connected to the first output end.

[0096] At this time, the clutch 3 is a single clutch, and the power system can achieve single-gear control. The structure of the power system is simpler, and the cost of the power system can be significantly reduced.

[0097] In some embodiments, the engine output shaft 11 and the fourth power output shaft 44 are coaxial and arranged along the first direction of the vehicle. At this time, the engine output shaft 11 and the fourth power output shaft 44 are longitudinally arranged, that is, arranged along the front-rear direction of the vehicle.

[0098] In some embodiments, the power system further includes an output assembly. The output assembly is provided between at least one transmission assembly and the first output end. The input end of the output assembly is drivingly connected to the transmission assembly, and the output end of the output assembly is drivingly connected to the first output end. In the embodiments of the present application, the output assembly outputs the power of the transmission assembly to the first output end to achieve the output of power.

[0099] In some embodiments, the power system further includes a second motor 70. The second motor 70 is drivingly connected to the input end of the output assembly.

[0100] In the embodiments of the present application, the setting of the second motor 70 makes the power system a hybrid power system, which has the advantages of improving fuel efficiency and reducing emissions.

[0101] In some embodiments, the engine output shaft 11 is parallel and offset from the second motor output shaft 71 of the second motor 70. The engine output shaft 11 and the second motor output shaft 71 both extend along the first direction of the vehicle. In the above structure of the embodiments of the present application, the engine output shaft 11 is parallel and offset from the second motor output shaft 71, which can shorten the axial dimension of the power system and facilitate the arrangement of the power system on the vehicle.

[0102] In some embodiments, the input end of the output assembly is an output gear 57. The output gear 57 meshes with the driven gear of the transmission assembly and also meshes with the motor driving gear 72 on the second motor output shaft 71 of the second motor 70.

[0103] In the above structure of the embodiment of the present application, the output gear 57 is meshed with the driven gear and the motor driving gear 72 respectively, and the engine 10 and the second motor 70 share the output gear 57 for power output, which can reduce the occupied space of the power system. In addition, the motor driving gear 72 on the second motor output shaft 71 of the second motor 70 is meshed with the output gear 57 for two-stage transmission, which has the advantage of high efficiency.

[0104] In some embodiments, the output assembly further includes a driven output shaft 46 and a meshing driving bevel gear 58 and a driven bevel gear 59; the driven output shaft 46 is provided with an output gear 57 and a driving bevel gear 58, and the driven bevel gear 59 is the output end of the output assembly. The output gear 57 and the driving bevel gear 58 are coaxially arranged, and the output gear 57 and the driving bevel gear 58 can rotate synchronously, and the power input to the output gear 57 is sequentially output to the first output end through the driving bevel gear 58 and the driven bevel gear 59.

[0105] In some embodiments, the driven output shaft 46 is disposed along the first direction of the vehicle, that is, the driven output shaft 46 is disposed longitudinally.

[0106] In some embodiments, the power system further includes a first differential 80, which is transmission-connected between the output end of the output assembly and the first output end. The first differential 80 is arranged so that the two front wheels at the first output end can rotate at different speeds when turning, and the vehicle can turn stably.

[0107] In some embodiments, the power system also includes a power battery 84, which is electrically connected to the first motor 20 and the second motor 70 respectively; the power battery 84 is located on the rear side of the vehicle, the engine 10 is located on the front side of the vehicle, and the power system is located between the power battery 84 and the engine 10.

[0108] In the embodiment of the present application, the motor rotor 22 rotates under the drive of the engine output shaft 11 to generate electric energy, and transmits the electric energy to the power battery 84. The electric energy in the power battery 84 can be provided to the second motor 70, so that the second motor 70 can achieve power output.

[0109] The power battery 84 is located at the rear side of the vehicle, the engine 10 is located at the front side of the vehicle, and the power system is located between the power battery 84 and the engine 10. The power system is longitudinally arranged in the vehicle and is a hybrid power system.

[0110] In some embodiments, the power system further includes a rear-drive electric drive bridge 85, which is electrically connected to a power battery 84 and is adapted to be connected to a second output terminal of the vehicle. The power battery 84 provides electrical energy to the rear-drive electric drive bridge 85, and the rear-drive electric drive bridge 85 can output power to the second output terminal.

[0111] In some embodiments, the rear-drive electric drive axle 85 includes a third motor, a reducer, and a second differential. The third motor is electrically connected to the power battery 84; the input end of the reducer is connected to the third motor output shaft of the third motor; and the second differential is drivingly connected between the output end of the reducer and the second output end. In the rear-drive electric drive axle 85, the power battery 84 provides electrical energy to the third motor, and the power of the third motor is sequentially output to the second output end through the reducer and the second differential, and the power system can realize power output to the second output end.

[0112] It is understandable that the rear-wheel drive electric drive axle 85 has a variety of structures. The embodiment of the present application does not specifically limit the structure of the rear-wheel drive electric drive axle 85, and any conventional or universal structure that meets the vehicle usage requirements can be selected.

[0113] In some embodiments, the power system also includes a controller, which is electrically connected to the clutch 3. The controller controls the action of the clutch 3, that is, controls the switching of the on / off unit in the clutch 3 between the engaged state and the disconnected state, so as to output the power of the engine to the power output shaft.

[0114] In some embodiments, the power system has a first operating condition and a second operating condition; in the first operating condition, the controller controls the clutch 3 to couple or decouple the engine output shaft 11 and the power output shaft so that the engine 10 outputs power or interrupts the power output; in the second operating condition, the controller controls the second motor 70 to output power or interrupts the power output; the power system has the first operating condition or the second operating condition; or, the power system has the first operating condition and the second operating condition at the same time.

[0115] In the above structure of the embodiment of the present application, under the first working condition, power is output by the engine 10, and under the second working condition, power is output by the second motor 70. The power system is a hybrid power system, and the engine 10 and the second motor 70 can output power at the same time, or the engine 10 or the second motor 70 can be used to output power.

[0116] In some embodiments, the power system also has a third working condition; in the third working condition, the controller controls the clutch 3 to decouple the engine output shaft 11 and the power output shaft through the motor rotor 22, and the motor rotor 22 rotates under the drive of the engine output shaft 11 to generate electrical energy, and transmits the electrical energy to the power battery 84; the controller controls the second motor 70 to use the electrical energy of the power battery 84 to output power or interrupt the output of power. At this time, the power output of the engine 10 in the power system is used to generate electrical energy and transmit it to the power battery 84, and the power battery 84 then supplies power to the second motor 70, and the second motor 70 outputs power. At this time, the power system is a series connection between the engine 10 and the second motor 70 for driving.

[0117] In some embodiments, the power system further includes a differential lock, which is connected to the first differential 80. The differential lock is used to lock the differential to provide better traction and stability under harsh road conditions. It can be understood that the differential lock can be a conventional structure that meets the usage requirements.

[0118] In some embodiments, the power system further includes a torsional damper 81, which is connected to the engine output shaft 11. The torsional damper 81 can reduce or control the torsional vibration of the engine output shaft 11 and reduce the impact of vibration on the power system. It can be understood that the torsional damper 81 can also be a conventional structure that meets the usage requirements.

[0119] The power system of the embodiments of the present application, referring to Figures 7 to 20 as shown, has a pure electric mode, an engine direct drive mode, a series mode, and a parallel mode.

[0120] Referring to Figure 7 as shown, it shows the first case of the pure electric mode, and referring to Figures 1 to 5 as shown, the power output from the second motor output shaft 71 of the second motor 70 sequentially passes through the motor drive gear 72, the output gear 57, the driven output shaft 46, the drive bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47 to rotate the two front wheels 82. The above is the front-wheel drive of the power system.

[0121] Referring to Figure 8 as shown, it shows the second case of the pure electric mode, and referring to Figures 1 to 5 as shown, the power output from the second motor output shaft 71 of the second motor 70 sequentially passes through the motor drive gear 72, the output gear 57, the driven output shaft 46, the drive bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47 to rotate the two front wheels 82.

[0122] The rear-wheel drive electric axle 85 outputs power to the rear output shaft 48 to rotate the two rear wheels 83. The above is the four-wheel drive of the power system.

[0123] Referring to Figure 9 as shown, it shows the third case of the pure electric mode, and referring to Figures 1 to 5 as shown, only the rear-wheel drive electric axle 85 outputs power to the rear output shaft 48 to rotate the two rear wheels 83. The above is the rear-wheel drive of the power system.

[0124] Referring to Figure 10 as shown, it shows the first case of the engine direct drive mode, and referring to Figures 1 to 5As shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the second on-off unit 32, the second power output shaft 42, the second driving gear 53, the second driven gear 54, the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47, causing the two front wheels 82 to rotate. The above is the first-gear engine direct drive of the power system.

[0125] Referring to Figure 11 As shown, it shows the second situation of the engine direct drive mode, and referring to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the first on-off unit 31, the first power output shaft 41, the first driving gear 51, the first driven gear 52, the third output shaft 43, the second driven gear 54, the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47, causing the two front wheels 82 to rotate. The above is the second-gear engine direct drive of the power system.

[0126] Referring to Figure 12 As shown, it shows the third situation of the engine direct drive mode, and referring to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the second on-off unit 32, the second power output shaft 42, the second driving gear 53, the second driven gear 54, the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47, causing the two front wheels 82 to rotate.

[0127] The rear drive electric axle 85 outputs power to the rear output shaft 48, causing the two rear wheels 83 to rotate. The above is the first-gear four-wheel drive of the power system.

[0128] Referring to Figure 13 As shown, it shows the fourth situation of the engine direct drive mode, and referring to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the first on-off unit 31, the first power output shaft 41, the first driving gear 51, the first driven gear 52, the third output shaft 43, the second driven gear 54, the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47, causing the two front wheels 82 to rotate.

[0129] The rear drive electric axle 85 outputs power to the rear output shaft 48, causing the two rear wheels 83 to rotate. The above is the second-gear four-wheel drive of the power system.

[0130] Referring toFigure 14 As shown, it shows the first case of the series mode and refers to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 causes the motor rotor 22 to rotate to generate electrical energy, and the electrical energy is transmitted to the power battery 84. The power battery 84 supplies power to the second motor 70, so that the power output from the second motor output shaft 71 of the second motor 70 passes through the motor drive gear 72, the output gear 57, the driven output shaft 46, the drive bevel gear 58, the driven bevel gear 59, and the first differential 80 in sequence, and is output to the front output shaft 47, causing the two front wheels 82 to rotate. The above is the front-wheel drive in the series mode of the power system.

[0131] Refer to Figure 15 As shown, it shows the second case of the series mode and refers to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 causes the motor rotor 22 to rotate to generate electrical energy, and the electrical energy is transmitted to the power battery 84. The power battery 84 supplies power to the second motor 70, so that the power output from the second motor output shaft 71 of the second motor 70 passes through the motor drive gear 72, the output gear 57, the driven output shaft 46, the drive bevel gear 58, the driven bevel gear 59, and the first differential 80 in sequence, and is output to the front output shaft 47, causing the two front wheels 82 to rotate. The power battery 84 also supplies power to the rear drive electric axle 85, and the rear drive electric axle 85 outputs power to the rear output shaft 48, causing the two rear wheels 83 to rotate. The above is the four-wheel drive in the series mode of the power system.

[0132] Refer to Figure 16 As shown, it shows the third case of the series mode and refers to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 causes the motor rotor 22 to rotate to generate electrical energy, and the electrical energy is transmitted to the power battery 84. The power battery 84 also supplies power to the rear drive electric axle 85, and the rear drive electric axle 85 outputs power to the rear output shaft 48, causing the two rear wheels 83 to rotate. The above is the rear-wheel drive in the series mode of the power system.

[0133] Refer to Figure 17 As shown, it shows the first case of the parallel mode and refers to Figures 1 to 5 As shown, the power output from the engine output shaft 11 of the engine 10 passes through the motor rotor 22, the second on-off unit 32, the second power output shaft 42, the second drive gear 53, the second driven gear 54, and the output gear 57 in sequence; and the power output from the second motor output shaft 71 of the second motor 70 passes through the motor drive gear 72 and the output gear 57 in sequence. Then it passes through the output gear 57, the driven output shaft 46, the drive bevel gear 58, the driven bevel gear 59, and the first differential 80 in sequence, and is output to the front output shaft 47, causing the two front wheels 82 to rotate. The above is the first gear front-wheel drive in the parallel mode of the power system.

[0134] Referring to Figure 18 as shown, which shows the second case of the parallel mode, and referring to Figures 1 to 5 as shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the first on-off unit 31, the first power output shaft 41, the first driving gear 51, the first driven gear 52, the third output shaft 43, the second driven gear 54, and the output gear 57; and the power output from the second motor output shaft 71 of the second motor 70 sequentially passes through the motor driving gear 72 and the output gear 57. Then, it sequentially passes through the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47 to rotate the two front wheels 82. The above is the second gear front-wheel drive in the parallel mode of the power system.

[0135] Referring to Figure 19 as shown, which shows the third case of the parallel mode, and referring to Figures 1 to 5 as shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the second on-off unit 32, the second power output shaft 42, the second driving gear 53, the second driven gear 54, and the output gear 57; and the power output from the second motor output shaft 71 of the second motor 70 sequentially passes through the motor driving gear 72 and the output gear 57. Then, it sequentially passes through the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47 to rotate the two front wheels 82.

[0136] The rear drive electric axle 85 outputs power to the rear output shaft 48 to rotate the two rear wheels 83. The above is the first gear four-wheel drive in the parallel mode of the power system.

[0137] Referring to Figure 20 as shown, which shows the second case of the parallel mode, and referring to Figures 1 to 5 as shown, the power output from the engine output shaft 11 of the engine 10 sequentially passes through the motor rotor 22, the first on-off unit 31, the first power output shaft 41, the first driving gear 51, the first driven gear 52, the third output shaft 43, the second driven gear 54, and the output gear 57; and the power output from the second motor output shaft 71 of the second motor 70 sequentially passes through the motor driving gear 72 and the output gear 57. Then, it sequentially passes through the output gear 57, the driven output shaft 46, the driving bevel gear 58, the driven bevel gear 59, and the first differential 80, and is output to the front output shaft 47 to rotate the two front wheels 82.

[0138] The rear drive electric axle 85 outputs power to the rear output shaft 48 to rotate the two rear wheels 83. The above is the second gear four-wheel drive in the parallel mode of the power system.

[0139] In the parallel - series mode, the power system has better power performance and cross - country performance.

[0140] In the embodiments of the present application, the power system of the embodiments of the present application is a longitudinally - mounted system. The engine output shaft 11 of the engine 10 of the power system is connected to the motor rotor 22 of the first motor 20. The direct connection between the engine 10 and the first motor 20 can effectively shorten the axial dimension of the power system, facilitating the arrangement of the power system on the vehicle. Moreover, it can reduce the power loss caused by power transmission through gears and the like, improve the efficiency of the power system, and enhance the power generation efficiency. Furthermore, the power system also has the advantages of simple structure, high transmission efficiency, and small layout space.

[0141] The embodiments of the present application provide a vehicle, which includes a vehicle body and the power system as described above, and the vehicle body is connected to the power system. The vehicle has the above - mentioned advantages of the power system, which will not be elaborated in the embodiments of the present application.

[0142] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0143] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0144] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. A power system, characterized in that: include, Engine (10); A first motor (20), the first motor (20) comprising a motor rotor (22), the motor rotor (22) being connected to an engine output shaft (11) of the engine (10); The motor rotor (22) is suitable for connecting to a power output shaft so as to output the power of the engine (10) to the power output shaft.

2. The power system according to claim 1, characterized in that The motor rotor (22) comprises a rotor body; along the axial direction of the engine output shaft (11), one end of the rotor body is connected to the engine output shaft (11).

3. The power system according to claim 1, wherein The power system further comprises: a clutch (3), the clutch (3) being connected to the motor rotor (22) and being suitable for connecting to the power output shaft; The clutch (3) is used to couple or decouple the engine output shaft (11) and the power output shaft through the motor rotor (22).

4. The power system according to claim 3, characterized in that, The clutch (3) is arranged inside the motor rotor (22).

5. The power system according to claim 4, characterized in that, The motor rotor (22) is provided with a mounting cavity (221), and the clutch (3) is arranged in the mounting cavity (221).

6. The power system according to claim 3, characterized in that, The clutch (3) comprises at least one on-off unit, which can be switched between an engaged state and a disconnected state.

7. The power system according to claim 6, characterized in that, The on-off unit includes an active component and a driven component; The driving component is connected to the motor rotor (22), and the driven component is suitable for being connected to the power output shaft. The driving component and the driven component can be engaged or disengaged.

8. The power system according to claim 7, characterized in that, The on-off unit further includes an on-off unit driving member, which can engage or disconnect the active component and the driven component.

9. The power system according to claim 7, characterized in that, The on-off unit comprises a first on-off unit (31), and the first on-off unit (31) comprises a first active component (311) and a first driven component (312); The power output shaft comprises a first power output shaft (41); The first active component (311) is connected to the motor rotor (22), and the first driven component (312) is suitable for connecting to the first power output shaft (41).

10. The power system according to claim 9, characterized in that, The on-off unit further comprises a second on-off unit (32), wherein the second on-off unit (32) comprises a second active component (321) and a second driven component (322); The power output shaft also includes a second power output shaft (42); The second active component (321) is connected to the motor rotor (22), and the second driven component (322) is suitable for connecting to the second power output shaft (42).

11. The power system according to claim 10, characterized in that, The engine output shaft (11), the first power output shaft (41) and the second power output shaft (42) are coaxial and arranged along a first direction of the vehicle.

12. The power system according to claim 7, characterized in that, The power system further comprises: At least one transmission assembly is connected to the power output shaft and is suitable for transmission connection with the first output end, and the transmission assembly is used to output the power of the engine (10) to the first output end through the power output shaft.

13. The power system according to claim 12, wherein The transmission assembly comprises a first transmission assembly and a second transmission assembly, wherein the transmission ratio of the first transmission assembly is not equal to the transmission ratio of the second transmission assembly; The on-off unit includes a first on-off unit (31) and a second on-off unit (32); The power output shaft includes a first power output shaft (41) and a second power output shaft (42). The first power output shaft (41) is connected to the first on-off unit (31), and the second power output shaft (42) is connected to the second on-off unit (32); The first transmission assembly is connected to the first power output shaft (41), and the second transmission assembly is connected to the second power output shaft (42).

14. The power system according to claim 13, wherein, The first transmission assembly includes a first driving gear (51) and a first driven gear (52) that mesh with each other; the first driving gear (51) is provided on the first power output shaft (41), and the first driven gear (52) is adapted to be in transmission connection with the first output end; The second transmission assembly includes a second driving gear (53) and a second driven gear (54) that mesh with each other; the second driving gear (53) is provided on the second power output shaft (42), and the second driven gear (54) is adapted to be in transmission connection with the first output end.

15. The power system according to claim 14, wherein, The first on-off unit (31) includes a first driving assembly (311) and a first driven assembly (312), and the second on-off unit (32) includes a second driving assembly (321) and a second driven assembly (322); The first power output shaft (41) is connected to the first driven assembly (312), and the first driving gear (51) is coaxially arranged with the first driven assembly (312); The second power output shaft (42) is connected to the second driven assembly (322), and the second driving gear (53) is coaxially arranged with the second driven assembly (322).

16. The power system according to claim 14, characterized in that, The first driven gear (52) and the second driven gear (54) are coaxially arranged.

17. The power system according to claim 12, characterized in that, There is one on-off unit, one power output shaft, and one transmission assembly respectively, The power output shaft includes a fourth power output shaft (44), and the transmission assembly includes a fourth driving gear (55) and a fourth driven gear (56) that mesh with each other; The fourth power output shaft (44) is connected to the driven assembly of the on-off unit. The fourth driving gear (55) is provided on the fourth power output shaft (44), and the fourth driven gear (56) is adapted to be in transmission connection with the first output end.

18. The power system according to claim 17, wherein The engine output shaft (11) and the fourth power output shaft (44) are coaxial and arranged along the first direction of the vehicle.

19. The power system according to claim 12, wherein The power system further includes an output assembly. The output assembly is arranged between the at least one transmission assembly and the first output end. The input end of the output assembly is in transmission connection with the transmission assembly, and the output end of the output assembly is in transmission connection with the first output end.

20. The power system according to claim 19, wherein The power system further includes a second motor (70). The second motor (70) is in transmission connection with the input end of the output assembly.

21. The power system according to claim 20, characterized in that, The engine output shaft (11) is parallel and offset from the second motor output shaft (71) of the second motor (70); both the engine output shaft (11) and the second motor output shaft (71) extend along the first direction of the vehicle.

22. The power system according to claim 20, characterized in that, The input end of the output assembly is an output gear (57), and the output gear (57) is meshed with the driven gear of the transmission assembly and with the motor driving gear (72) on the second motor output shaft (71) of the second motor (70).

23. The power system according to claim 22, characterized in that, The output assembly further comprises a driven output shaft (46) and a meshing driving bevel gear (58) and a driven bevel gear (59); The output gear (57) and the driving bevel gear (58) are provided on the driven output shaft (46); The driven bevel gear (59) is the output end of the output assembly.

24. The power system according to claim 23, wherein, The driven output shaft (46) is arranged along a first direction of the vehicle.

25. The power system according to claim 19, characterized in that, The power system further comprises a first differential (80), wherein the first differential (80) is drivingly connected between the output end of the output component and the first output end.

26. The power system according to claim 20, characterized in that, The power system further comprises a power battery (84), wherein the power battery (84) is electrically connected to the first motor (20) and the second motor (70) respectively; The power battery (84) is located at the rear side of the vehicle, the engine (10) is located at the front side of the vehicle, and the power system is located between the power battery (84) and the engine (10).

27. The power system according to claim 26, characterized in that, The power system further comprises a rear-drive electric drive bridge (85), wherein the rear-drive electric drive bridge (85) is electrically connected to the power battery (84), and the rear-drive electric drive bridge (85) is suitable for being connected to a second output terminal of the vehicle.

28. The power system according to claim 27, wherein The rear drive electric drive bridge (85) comprises: a third motor electrically connected to the power battery (84); A reducer, wherein an input end of the reducer is connected to a third motor output shaft of the third motor; A second differential is drivingly connected between the output end of the reducer and the second output end.

29. The power system according to claim 26, characterized in that, The power system further comprises a controller, which is connected to the clutch (3).

30. The power system according to claim 29, wherein, The power system has a first operating condition and a second operating condition; In the first working condition, the controller controls the clutch (3) to couple or decouple the engine output shaft (11) and the power output shaft, so that the engine (10) outputs power or interrupts power output; In the second working condition, the controller controls the second motor (70) to output power or interrupt power output; The power system has a first operating condition or a second operating condition; or, the power system has both the first operating condition and the second operating condition.

31. The power system according to claim 30, wherein, The power system also has a third working condition; in the third working condition, the controller controls the clutch (3) to decouple the engine output shaft (11) and the power output shaft through the motor rotor (22), and the motor rotor (22) rotates under the drive of the engine output shaft (11) to generate electrical energy, and transmits the electrical energy to the power battery (84); The controller controls the second motor (70) to use the electric energy of the power battery (84) to output power or interrupt the power output.

32. The power system according to claim 1, wherein, The first motor (20) is a flat motor.

33. The power system according to any one of claims 1-32, characterized in that, The engine output shaft (11) extends along the front-rear direction of the vehicle.

34. A vehicle, characterized in that, The vehicle includes a vehicle body and the power system according to any one of claims 1-33, and the vehicle body is connected to the power system.

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