Powertrain and Vehicles

Abstract

Invention details;

Description

Power drive system and vehicle Technical Field

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

[0002] In recent years, the performance requirements of commercial vehicle longitudinal rear-wheel drive power drive systems have become increasingly higher. In order to adapt to the development requirements of high fuel economy and low carbonization of automobiles, traditional longitudinal rear-wheel drive power drive systems are facing development bottlenecks. Traditional longitudinal rear-wheel drive power drive systems are in urgent need of transformation and upgrading to rear-wheel drive hybrid power drive systems.

[0003] A rear-wheel drive hybrid drive system refers to a drive system that uses at least two different power sources for driving. Currently, most rear-wheel drive hybrid drive systems use a gasoline-electric hybrid system. In order to maximize the engine combustion efficiency, some automobile manufacturers have developed hybrid systems using a dual-motor structure. However, most rear-wheel drive hybrid systems have complex structural designs, which increases the design complexity, or have a single drive mode, resulting in poor vehicle power and economy.

[0004] For example, CN114165563A discloses a longitudinal rear-wheel drive hybrid transmission structure, which includes an engine, a clutch, a first input shaft, a second input shaft, a third input shaft, a hollow shaft, an intermediate shaft, an output shaft, a first motor, a second motor, a first gear pair, a second gear pair, a third gear pair, a fourth gear pair, a fifth gear pair, a sixth gear pair, a seventh gear pair, a first synchronizer, a second synchronizer, and a third synchronizer. The drive system structure is complex and the manufacturing cost is high.

[0005] For example, CN215883302U discloses a hybrid transmission power system and vehicle, which includes an engine, a generator, a drive motor, a clutch, a reducer and a battery. The generator, clutch, reducer and drive motor are connected in sequence. The drive system has a single driving mode and has poor power and economy performance when used in rear-wheel drive commercial vehicles.

[0006] Summary of the Invention

[0007] The purpose of this application is to provide a power drive system and a vehicle, which can solve the problems of complex structure and poor vehicle power and economy of existing technical solutions.

[0008] In order to achieve the above objectives, the technical solutions adopted in this application are as follows:

[0009] In the first aspect, the present application discloses a power drive system, including a first motor, a first clutch, a second clutch, a clutch input hub, a first gear set, a second gear set, an intermediate shaft, an input shaft, and an output shaft. The output end of the first motor is connected to the first gear set through the first clutch and to the second gear set through the second clutch. The first gear set and the second gear set are both connected to the intermediate shaft. The intermediate shaft is connected to the output shaft in a transmission manner. The first clutch and the second clutch are connected to the input shaft through the clutch input hub.

[0010] Furthermore, it also includes an engine, and the output end of the engine is connected to the input shaft through a third clutch.

[0011] Furthermore, a shock absorber is connected between the engine output end and the third clutch.

[0012] Furthermore, it includes a second motor, wherein the output end of the second motor is connected to the input shaft.

[0013] Furthermore, the first gear set includes a first driving gear connected to the input shaft and a first driven gear connected to the intermediate shaft, and the first driving gear is meshed with the first driven gear;

[0014] The second gear set includes a second driving gear connected to the input shaft and a second driven gear connected to the intermediate shaft, and the second driving gear is meshed with the second driven gear.

[0015] Furthermore, the number of teeth of the first driving gear is smaller than that of the first driven gear, and the number of teeth of the second driving gear is larger than that of the second driven gear.

[0016] Furthermore, the first clutch and the second clutch are arranged in parallel and coaxially.

[0017] Furthermore, the output end of the intermediate shaft is transmission-connected to the output shaft via a third gear set.

[0018] Furthermore, the input shaft and the intermediate shaft are arranged in parallel.

[0019] In a second aspect, the present application discloses a vehicle comprising the power drive system described in the present application.

[0020] The beneficial effects of the present application are as follows: by controlling the engagement or disengagement of the first clutch and the second clutch, the power of the first motor, the second motor and the engine can be selectively transmitted to the output shaft through one of the first gear set and the second gear set, so that the first motor can output two speed ratios, realizing two-speed shifting of the first motor, the second motor and the engine, and can meet different driving force requirements, and make the first motor, the second motor and the engine operate in the high-efficiency zone as much as possible to improve the economy and power of the vehicle; and the power drive system has a simple and compact structure, uses a small number of components, and reduces the structural complexity of the power drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of a power drive system according to Embodiment 1 of the present application;

[0022] FIG2 is a schematic diagram of the structure of the power drive system according to the second embodiment of the present application;

[0023] FIG3 is a schematic diagram of the structure of the power drive system described in Example 3 of the present application.

[0024] In the figure, 1 is the first motor, 2 is the first clutch, 3 is the second clutch, 4 is the clutch input hub, 5 is the first gear set, 51 is the first driving gear, 52 is the first driven gear, 6 is the second gear set, 61 is the second driving gear, 62 is the second driven gear, 7 is the intermediate shaft, 8 is the input shaft, 9 is the output shaft, 10 is the third gear set, 101 is the third driving gear, 102 is the third driven gear, 11 is the engine, 12 is the third clutch, 13 is the shock absorber, and 14 is the second motor. DETAILED DESCRIPTION

[0025] The following will describe the embodiments of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for the purpose of illustrating the present application and are not intended to limit the scope of protection of the present application.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. Therefore, the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0027] In the first embodiment, referring to FIG. 1 , the power drive system includes a first motor 1, a first clutch 2, a second clutch 3, a clutch input hub 4, a first gear set 5, a second gear set 6, an intermediate shaft 7, an input shaft 8, and an output shaft 9. The output end of the first motor 1 is connected to the first gear set 5 via the first clutch 2, and the first motor 1 is connected to the second gear set 6 via the second clutch 3. The first gear set 5 and the second gear set 6 are both connected to the intermediate shaft 7, which is in driving connection with the output shaft 9. The first clutch 2 and the second clutch 3 are connected to the input shaft 8 via the clutch input hub 4. By controlling the engagement or disengagement of the first clutch 2 and the second clutch 3, the power of the first motor 1 can be selectively transmitted to the intermediate shaft 7 via one of the first gear set 5 and the second gear set 6, thereby enabling the first motor 1 to output in two speed ratios, achieving two-speed shifting of the first motor 1, meeting different driving force requirements, and allowing the first motor 1 to operate in the high-efficiency range as much as possible, thereby improving the economy and power of the vehicle. Furthermore, the rear-drive power drive system has a simple and compact structure, uses a small number of components, and reduces the structural complexity of the rear-drive power drive system.

[0028] In this embodiment, the first clutch 2 and the second clutch 3 are arranged in parallel and coaxially in the cavity of the first motor 1, and the input shaft 8 and the intermediate shaft 7 are arranged in parallel, making the overall structure simpler and more compact, which is conducive to the miniaturization of the rear-drive power drive system.

[0029] In this embodiment, the first gear set 5 includes a first driving gear 51 connected to the input shaft 8 and a first driven gear 52 connected to the intermediate shaft 7, with the first driving gear 51 meshing with the first driven gear 52. The second gear set 6 includes a second driving gear 61 connected to the input shaft 8 and a second driven gear 62 connected to the intermediate shaft 7, with the second driving gear 61 meshing with the second driven gear 62. The first driving gear 51 has fewer teeth than the first driven gear 52, while the second driving gear 61 has more teeth than the second driven gear 62. This simplifies the power output path, resulting in a simpler and more compact structure, which helps reduce power transmission losses and miniaturize the rear-wheel drive hybrid drive system.

[0030] In this embodiment, the intermediate shaft 7 is in driving connection with the output shaft 9 via a third gear set 10. The third gear set 10 includes a third driving gear 101 connected to the intermediate shaft 7 and a third driven gear 102 connected to the output shaft 9. The output shaft 9 is connected between the third gear set 10 and the wheels of the vehicle, thereby transmitting power from the intermediate shaft 7 to the wheels through the third gear set 10 and the output shaft 9, thereby driving the vehicle.

[0031] By controlling the engagement or disengagement of the first clutch 2 and the second clutch 3 , the power drive system provided in this embodiment has two pure electric drive modes, each of which is briefly described as follows.

[0032] 1) First Pure Electric Drive Mode: Engage first clutch 2, disconnect second clutch 3, and drive first motor 1 to establish the first pure electric drive mode. The power transmission route is: first motor 1, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and ultimately power is transmitted to the wheels.

[0033] 2) Second pure electric drive mode: Engage the second clutch 3, disconnect the first clutch 2, and drive the first motor 1 to establish the second pure electric drive mode. The power transmission route is: first motor 1, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally the power is transmitted to the wheels.

[0034] Embodiment 2: This embodiment adds an engine 11 and a third clutch 12 on the basis of embodiment 1. The output end of the engine 11 is connected to the input shaft 8 through the third clutch 12. A shock absorber 13 is connected between the output end of the engine 11 and the third clutch 12. Other structures are the same as those of embodiment 1 and will not be repeated here.

[0035] The first motor 1 can be used for power generation or driving. By controlling the engagement or disengagement of the first clutch 2, the second clutch 3, and the third clutch 12, a pure electric drive mode, a series drive mode, a parallel drive mode, and an engine direct drive mode can be achieved. Multiple drive modes have two gears, meeting the vehicle's different drive requirements. This allows the engine 11 to operate in a fuel-efficient range and the first motor 1 to operate in a high-efficiency range, thereby improving vehicle economy. The engine 11 and the first motor 1 of this rear-wheel drive hybrid drive system share a two-speed transmission structure, enabling multiple drive modes. This system features high integration, a compact structure, and a small number of parts, reducing the structural complexity of the rear-wheel drive hybrid drive system while improving system efficiency.

[0036] Embodiment 2 provides multiple driving modes, including a third pure electric driving mode, a fourth pure electric driving mode, a first parallel driving mode, a second parallel driving mode, a first engine direct driving mode, a second engine direct driving mode, a third engine direct driving mode, and a fourth engine direct driving mode. Each driving mode is briefly described as follows.

[0037] 1) Third pure electric driving mode: the first clutch 2 is engaged, the second clutch 3 and the third clutch 12 are disconnected, the engine 11 is not working, and the first motor 1 is driven to establish the third pure electric driving mode.

[0038] The power transmission route in this driving mode is: first motor 1, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0039] 2) Fourth pure electric driving mode: the second clutch 3 is engaged, the first clutch 2 and the third clutch 12 are disconnected, the engine 11 is not working, and the first motor 1 is driven to establish the second pure electric driving mode.

[0040] The power transmission route in this driving mode is: first motor 1, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0041] 3) First parallel drive mode: The third clutch 12 and the first clutch 2 are engaged, the second clutch 3 is disconnected, the engine 11 is running, and the first motor drives 1 to establish the first parallel drive mode.

[0042] The power transmission route in this driving mode is: the first motor 1, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0043] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0044] 4) Second parallel drive mode: The third clutch 12 and the second clutch 3 are engaged, the first clutch 2 is disconnected, the engine 11 is running, and the first motor drives 1 to establish the first parallel drive mode.

[0045] The power transmission route in this driving mode is: the first motor 1, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0046] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0047] 5) First engine direct drive mode: The third clutch 12 and the first clutch 2 are engaged, the second clutch 3 is disconnected, the engine 11 is running, and the first motor 1 is generating electricity, to establish the first engine direct drive mode.

[0048] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0049] 6) Second engine direct drive mode: The third clutch 12 and the second clutch 3 are engaged, the first clutch 2 is disconnected, the engine 11 is running, and the first motor 1 generates electricity to establish the second engine direct drive mode.

[0050] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0051] 7) Third engine direct drive mode: The third clutch 12 and the first clutch 2 are engaged, the second clutch 3 is disconnected, the engine 11 is operating, and the first motor 1 is not operating, to establish the third engine direct drive mode.

[0052] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0053] 8) Fourth engine direct drive mode: The third clutch 12 and the second clutch 3 are engaged, the first clutch 2 is disconnected, the engine 11 is operated, and the first motor 1 is not operated, to establish the fourth engine direct drive mode.

[0054] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0055] Embodiment 3: This embodiment adds a second motor 14 on the basis of embodiment 2. The output end of the second motor 14 is connected to the input shaft 8. Other structures are the same as those of embodiment 1 and will not be repeated here.

[0056] The first motor 1 and the second motor 14 can be used for generating electricity or driving. By controlling the engagement or disconnection of the first clutch 2, the second clutch 3, and the third clutch 12, a pure electric drive mode, a series drive mode, a parallel drive mode, and an engine direct drive mode can be realized, and many of the drive modes have two gears, which meet the different drive requirements of the vehicle, and make the engine 11 work in a range with higher fuel economy as much as possible, and the first motor 1 and the second motor 14 work in a high-efficiency area, so as to improve the economy of the vehicle; the engine 11, the first motor 1 and the second motor 14 of the rear-wheel drive hybrid drive system share a set of two-speed transmission structures, which can realize multiple drive modes, have high integration, compact structure, and use a small number of parts, reducing the structural complexity of the rear-wheel drive hybrid drive system and improving the system efficiency.

[0057] Example three provides multiple driving modes, including a fifth pure electric driving mode, a sixth pure electric driving mode, a seventh pure electric driving mode, an eighth pure electric driving mode, a ninth pure electric driving mode, a tenth pure electric driving mode, a first series driving mode, a second series driving mode, a third parallel driving mode, a fourth parallel driving mode, a fifth parallel driving mode, a sixth parallel driving mode, a seventh parallel driving mode, an eighth parallel driving mode, a fifth engine direct driving mode, a sixth engine direct driving mode, a seventh engine direct driving mode, and an eighth engine direct driving mode. Each driving mode is briefly described as follows.

[0058] 1) Fifth pure electric driving mode: engage the first clutch 2, disconnect the second clutch 3 and the third clutch 12, stop the engine 11, drive the first motor 1, and stop the second motor 14 to establish the fifth pure electric driving mode.

[0059] The power transmission route in this driving mode is: first motor 1, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0060] 2) Sixth pure electric driving mode: engage the second clutch 3, disconnect the first clutch 2 and the third clutch 12, stop the engine 11, drive the first motor 1, and stop the second motor 14 to establish the sixth pure electric driving mode.

[0061] The power transmission route in this driving mode is: first motor 1, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0062] 3) Seventh pure electric driving mode: engage the first clutch 2, disconnect the second clutch 3 and the third clutch 12, stop the engine 11 and the first motor 1, and drive the second motor 14 to establish the seventh pure electric driving mode.

[0063] The power transmission route in this driving mode is: second motor 14, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0064] 4) Eighth pure electric driving mode: engage the second clutch 3, disconnect the first clutch 2 and the third clutch 12, stop the engine 11 and the first motor 1, and drive the second motor 14 to establish the eighth pure electric driving mode.

[0065] The power transmission route in this driving mode is: second motor 14, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0066] 5) Ninth pure electric driving mode: engage the first clutch 2, disconnect the second clutch 3 and the third clutch 12, stop the engine 11, drive the first motor 1, and drive the second motor 14 to establish the ninth pure electric driving mode.

[0067] The power transmission route in this driving mode is: the first motor 1, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0068] The second power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0069] 6) Tenth pure electric driving mode: engage the second clutch 3, disconnect the first clutch 2 and the third clutch 12, stop the engine 11, drive the first motor 1, and drive the second motor 14 to establish the tenth pure electric driving mode.

[0070] The power transmission route in this driving mode is: the first motor 1, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0071] The second power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0072] 7) First series drive mode: engage the first clutch 2, disconnect the second clutch 3 and the third clutch 12, the engine 1 is running, the first motor 1 is driving, and the second motor 14 is generating electricity to establish the first series drive mode.

[0073] The power transmission route in this driving mode is: first motor 1, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0074] 8) Second series drive mode: engage the second clutch 3, disconnect the first clutch 2 and the third clutch 12, the engine 1 is running, the first motor 1 is driving, and the second motor 14 is generating electricity to establish the second series drive mode.

[0075] The power transmission route in this driving mode is: first motor 1, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0076] 9) Third parallel drive mode: The first clutch 2 and the third clutch 12 are engaged, the second clutch 3 is disconnected, the engine 11 is operating, the first motor 1 is driving, and the second motor 14 is not operating to establish the third parallel drive mode.

[0077] The power transmission route in this driving mode is: the first motor 1, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0078] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0079] 10) Fourth parallel drive mode: The second clutch 3 and the third clutch 12 are engaged, the first clutch 2 is disconnected, the engine 11 is operating, the first motor 1 is driving, and the second motor 14 is not operating to establish the fourth parallel drive mode.

[0080] The power transmission route in this driving mode is: the first motor 1, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0081] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0082] 11) Fifth parallel drive mode: The first clutch 2 and the third clutch 12 are engaged, the second clutch 3 is disconnected, the engine 11 is operating, the first motor 1 is not operating, and the second motor 14 is driving to establish the fifth parallel drive mode.

[0083] The power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0084] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0085] 12) Sixth parallel drive mode: The second clutch 3 and the third clutch 12 are engaged, the first clutch 2 is disconnected, the engine 11 is operating, the first motor 1 is not operating, and the second motor 14 is driving to establish the sixth parallel drive mode.

[0086] The power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0087] The second power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0088] 13) Seventh parallel drive mode: the first clutch 2 and the third clutch 12 are engaged, the second clutch 3 is disconnected, the engine 11 is running, the first motor 1 is driving, and the second motor 14 is driving to establish the seventh parallel drive mode.

[0089] The power transmission route in this driving mode is: the first motor 1, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0090] The second power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the first clutch 2, the first gear set 5, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0091] The power transmission route three in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0092] 14) Eighth parallel drive mode: The second clutch 3 and the third clutch 12 are engaged, the first clutch 2 is disconnected, the engine 11 is running, the first motor 1 is driving, and the second motor 14 is driving to establish the eighth parallel drive mode.

[0093] The power transmission route in this driving mode is: the first motor 1, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0094] The second power transmission route in this driving mode is: the second motor 14, the input shaft 8, the clutch input hub 4, the second clutch 3, the second gear set 6, the intermediate shaft 7, the third gear set 10, the output shaft 9, and finally transmitted to the wheels.

[0095] The power transmission route three in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0096] 15) Fifth engine direct drive mode: The first clutch 2 and the third clutch 12 are engaged, the second clutch 3 is disconnected, the engine 11 is operating, the first motor 1 is generating electricity, and the second motor 14 is not operating to establish the fifth engine direct drive mode.

[0097] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0098] 16) Sixth engine direct drive mode: The second clutch 3 and the third clutch 12 are engaged, the first clutch 2 is disconnected, the engine 11 is operating, the first motor 1 is generating electricity, and the second motor 14 is not operating to establish the sixth engine direct drive mode.

[0099] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0100] 17) Seventh engine direct drive mode: The first clutch 2 and the third clutch 12 are engaged, the second clutch 3 is disconnected, the engine 11 is operating, the first motor 1 is not operating, and the second motor 14 is generating electricity to establish the seventh engine direct drive mode.

[0101] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, first clutch 2, first gear set 5, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0102] 18) Eighth engine direct drive mode: The second clutch 3 and the third clutch 12 are engaged, the first clutch 2 is disconnected, the engine 11 is operating, the first motor 1 is not operating, and the second motor 14 is generating electricity to establish the eighth engine direct drive mode.

[0103] The power transmission route in this driving mode is: engine 11, shock absorber 13, third clutch 12, input shaft 8, clutch input hub 4, second clutch 3, second gear set 6, intermediate shaft 7, third gear set 10, output shaft 9, and finally transmitted to the wheels.

[0104] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art based on the present application are within the protection scope of the present application.

Claims

DEPCT681. A characteristic drive system consisting of a first motor (1), first clutch (2), second clutch (3), input clutch (4), first gearbox (5), second gearbox (6), intermediate shaft (7), input shaft (8) and output shaft (9), the output end of the first motor (1) being connected to the first gearbox (5) via the first clutch (2) and to the second gearbox (6) via the second clutch (3), both the first gearbox (5) and the second gearbox (6) being connected to the intermediate shaft (7), the intermediate shaft (7) being connected to the first motor (1) 1. The drive system under claim 1, characterized by the inclusion of an engine (11) and the output end of the engine (11) connected to the input shaft (8) via the third clutch (12).

2. The drive system under claim 2, characterized by the inclusion of a damper (13) connected between the output end of the engine (11) and the third clutch (12).

3. The drive system under claim 2, characterized by the inclusion of a damper (13) connected between the output end of the engine (11) and the third clutch (12). 4.A drive system under claim 2 with a specific design that includes a second motor (14) and the output end of the second motor (14) is connected to the input shaft (8).

5. A drive system under claim 1 or 2 with a specific design that the first gearbox (5) is included with the first drive gear (51) connected to the input shaft (8) and the first driven gear (52) connected to the intermediate shaft (7) and the first drive gear (51) meshes with the first driven gear (52) and the second gearbox (6) is included with the second drive gear (61) connected to the intermediate shaft (7).

6. A drive system under claim 5 that is characterized by the number of teeth of the first drive gear (51) being smaller than the number of teeth of the first driven gear (52) and the number of teeth of the second drive gear (61) being greater than the number of teeth of the second driven gear (62).

7. A drive system under claim 1 or 2 that is characterized by the first clutch (2) and the second clutch (3) being arranged in parallel and having a common axis. 8.A drive system under claim 1 or 2 that is characterized by the output end of the central shaft being in a power transmission connection to the output shaft via a third gear.

9. A drive system under claim 1 or 2 that is characterized by the input shaft (8) and the central shaft (7) being arranged in parallel.

10. A vehicle of a characteristic which is incorporated with any one of the drive systems under claims 1 through 9.

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