Range extending system and vehicle

Abstract

The invention provides a range extending type system and a vehicle. The range extending type system comprises a first driving system, and the first driving system comprises an engine, a motor, a hybrid gearbox, a transmission assembly and a speed reducer assembly; a speed change assembly is arranged in the hybrid gearbox and connected with the engine, the motor and the transmission assembly. The speed change assembly can transmit the power of the engine to the motor and can also transmit the power of the engine or the motor to the speed reducer assembly through the transmission assembly. The engine and the motor are connected in the same hybrid gearbox, and the hybrid gearbox converts the low rotating speed of the engine into the high rotating speed of the motor, so that the working efficiency of the engine is improved. In addition, the first driving system is provided with one motor and one engine and is matched with the second driving system to achieve various vehicle driving modes, and the structure is simple.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular to a range extender system and a vehicle. Background Art

[0002] With the increasing popularity of pure electric vehicles, consumers have accepted and become accustomed to the driving experience brought by pure electric vehicles. However, due to the limitation of battery energy density, range anxiety remains a pain point for pure electric vehicles. Thus, range extender vehicles have become a widely accepted solution for consumers.

[0003] However, mainstream range extender vehicles all adopt a three-motor solution, which is complex in structure and high in cost; in addition, when the engine is directly driven, there are problems of low engine operating efficiency and high fuel consumption.

[0004] Therefore, it is necessary to design a range extender system and a vehicle with a simple structure, low energy consumption, and capable of realizing multiple vehicle driving modes. Summary of the Invention

[0005] The present application provides a range extender system and a vehicle with a simple structure, low energy consumption, and capable of realizing multiple vehicle driving modes.

[0006] In a first aspect of this embodiment, a range extender system is provided, including a first drive system. The first drive system includes an engine, a motor, a hybrid transmission, a transmission assembly, and a reducer assembly; a speed change assembly is provided in the hybrid transmission, and the speed change assembly is respectively connected to the engine, the motor, and the transmission assembly; the speed change assembly can transmit the power of the engine to the motor, and the speed change assembly can also transmit the power of the engine or the motor to the reducer assembly through the transmission assembly.

[0007] Optionally, the speed change assembly includes a first gear, a second gear, and a third gear; the first gear is used to receive the power of the engine; the first gear meshes with the second gear; the second gear and the third gear are coaxially and rigidly connected to the motor shaft of the motor; the third gear is used to transmit power to the transmission assembly of the engine.

[0008] Optionally, the number of teeth of the first gear is n, and the number of teeth of the second gear is m, and the number of teeth n is less than the number of teeth m.

[0009] Optionally, the hybrid transmission includes a first clutch, and the first clutch is arranged between the first gear and the engine shaft of the engine.

[0010] Optionally, the transmission assembly includes a second clutch; the second clutch is used to control the connection or disconnection between the third gear and the reducer assembly.

[0011] Optionally, the transmission assembly includes an intermediate first shaft, an intermediate second shaft, a first transmission member, and a second transmission member; the intermediate first shaft transmits power from the third gear to the intermediate second shaft through the first transmission member; the intermediate second shaft transmits power from the intermediate first shaft to the reducer assembly through the second transmission member.

[0012] Optionally, the first transmission member includes a front gear of the intermediate first shaft and a rear gear of the intermediate first shaft; the second clutch is disposed between the rear gear of the intermediate first shaft and the intermediate first shaft; the front gear of the intermediate first shaft is rigidly connected to the intermediate first shaft; the rear gear of the intermediate first shaft meshes with the third gear.

[0013] Optionally, the second transmission member includes a front gear of the intermediate second shaft and a rear gear of the intermediate second shaft; the front gear of the intermediate second shaft and the rear gear of the intermediate second shaft are rigidly connected through the intermediate second shaft; the front gear of the intermediate second shaft meshes with the front gear of the intermediate first shaft; the rear gear of the intermediate second shaft meshes with the reducer assembly.

[0014] Optionally, the engine shaft of the engine and the motor shaft of the motor are arranged in parallel.

[0015] Optionally, the speed change assembly and the first clutch are disposed within the hybrid transmission housing.

[0016] Optionally, the range extender system further includes a second drive system and a power battery, and the second drive system and the first drive system are respectively connected to the power battery.

[0017] Optionally, the range extender system includes a range-extended two-wheel drive mode, in which the engine delivers power to the motor through the hybrid transmission, and the motor delivers power to the power battery and drives the second drive system through the power battery.

[0018] Optionally, the range extender system further includes a pure electric four-wheel drive mode, a pure electric two-wheel drive mode, an engine direct drive two-wheel drive mode, an energy recovery mode, and an idle power generation mode, wherein the first drive system serves as a front drive system and the second drive system serves as a rear drive system.

[0019] In another possible implementation manner, a second aspect of this embodiment further provides a vehicle, including the range extender system described in the first aspect.

[0020] This embodiment discloses a range extender system and a vehicle. By connecting the engine and the motor in the same hybrid transmission, the hybrid transmission converts the low speed of the engine to the high speed of the motor, improving the working efficiency of the engine. In addition, the first drive system realizes multiple vehicle drive modes by arranging one motor and one engine and cooperating with the second drive system, with a simple structure. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the vehicle in the embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the first drive system in the embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the transmission route of the vehicle in the pure electric four-wheel drive mode embodiment of the present application;

[0024] Figure 4 is a schematic diagram of the transmission route of the vehicle in the pure electric two-wheel drive mode embodiment of the present application;

[0025] Figure 5 is a schematic diagram of the transmission route of the vehicle in the extended range two-wheel drive mode embodiment of the present application;

[0026] Figure 6 is a schematic diagram of the transmission route of the vehicle in the engine direct drive two-wheel drive embodiment of the present application;

[0027] Figure 7 is a schematic diagram of the transmission route of the vehicle in the energy recovery mode embodiment of the present application;

[0028] Figure 8 is a schematic diagram of the transmission route of the vehicle in the idle mode embodiment of the present application.

[0029] Explanation of the reference numerals in the drawings:

[0030] 100 - First drive system; 200 - Second drive system; 300 - Power battery;

[0031] 10 - Engine; 11 - Engine shaft;

[0032] 20 - Motor; 21 - Motor shaft;

[0033] 30 - Hybrid transmission; 31 - First gear; 32 - Second gear; 33 - Third gear; 34 - First clutch;

[0034] 40 - Transmission component; 41 - Intermediate first shaft; 42 - Intermediate second shaft; 43 - First transmission member; 431 - Intermediate first shaft front gear; 432 - Intermediate first shaft rear gear; 44 - Second transmission member; 441 - Intermediate second shaft front gear; 442 - Intermediate second shaft rear gear; 45 - Second clutch;

[0035] 50 - Reducer assembly; 60 - Reducer assembly;

[0036] 70 - First drive shaft; 80 - Second drive shaft. Detailed implementation manners

[0037] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0038] The terms used in the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should have the ordinary meanings understood by those of ordinary skill in the art to which the present application belongs. The terms "first", "second" and similar words used in the specification and claims of the present application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. "Plurality" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are for ease of description only and are not limited to one position or a spatial orientation. The words such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "an" and "the" used in the specification and appended claims of the present application are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0039] As pure electric vehicles become more and more popular, consumers have accepted and become accustomed to the driving experience brought by pure electric vehicles. However, due to the limitation of the energy density of power batteries, range anxiety remains a pain point for pure electric vehicles. Thus, range-extended vehicles have become a widely accepted solution by consumers.

[0040] However, the mainstream range-extended vehicles all adopt a technical solution with three motors, which is complex in structure and high in cost. Therefore, referring to Figure 1As shown in the figure, this embodiment discloses a range extender system. The range extender system includes a first drive system 100. The first drive system 100 includes an engine 10 and an electric motor 20. Only one engine 10 and one electric motor 20 are provided and cooperate with the second drive system 200 to achieve multiple drive modes, and the structure is compact and simple.

[0041] In addition, the range extender system in this embodiment further includes a hybrid transmission 30, a transmission assembly 40, and a reducer assembly 50; a speed change assembly is provided in the hybrid transmission 30, and the speed change assembly is respectively connected to the engine 10, the electric motor 20, and the transmission assembly 40.

[0042] In a possible implementation manner, referring to Figure 5 As shown in the figure, the speed change assembly can transmit the power of the engine 10 to the electric motor 20. In another possible implementation manner, referring to Figure 6 As shown in the figure, the speed change assembly can also transmit the power of the engine 10 to the reducer assembly 50 through the transmission assembly 40. In another possible implementation manner, referring to Figure 3 As shown in the figure, the speed change assembly can also transmit the power of the electric motor 20 to the reducer assembly 50 through the transmission assembly 40.

[0043] In addition, by connecting the engine 10 and the electric motor 20 in the hybrid transmission 30, the hybrid transmission 30 converts the low speed of the engine 10 to the high speed of the electric motor 20, improving the working efficiency of the engine 10.

[0044] Specifically:

[0045] In a possible implementation manner, referring to Figure 2 As shown in the figure, the speed change assembly includes a first gear 31, a second gear 32, and a third gear 33; the first gear 31 is used to receive the power of the engine 10; the first gear 31 meshes with the second gear 32; the second gear 32 and the third gear 33 are coaxially and rigidly connected to the motor shaft 21 of the electric motor 20, so that the rotational speed and torque of the second gear 32 and the third gear 33 are always kept consistent; the third gear 33 is used to transmit power to the transmission assembly 40.

[0046] In this embodiment, the first gear 31 meshes with the second gear 32; the number of teeth of the first gear 31 is n, and the number of teeth of the second gear 32 is m. The number of teeth n is less than the number of teeth m, so that the low speed of the engine 10 is converted to the high speed of the electric motor 20. Of course, in another possible implementation manner, the number of teeth n can also be greater than the number of teeth m, so that the high speed of the engine 10 is converted to the low speed of the electric motor 20.

[0047] In a possible implementation, the tooth number ratio of n:m is 1:3. When the output speed of the engine 10 is 1000 revolutions per minute, the output rotational speed of the motor 20 is 3000 revolutions per minute. That is, while reducing the rotational energy consumption of the engine 10, the output speed of the motor 20 can be increased. What is described here is just one implementable way, including but not limited to this. Specifically, the tooth numbers of the first gear 31 and the second gear 32 can be adjusted in combination with components such as the engine 10, the motor 20, and the hybrid transmission 30, which will not be elaborated here.

[0048] In a possible implementation, the hybrid transmission 30 includes a first clutch 34, and the first clutch 34 is disposed between the first gear 31 and the engine shaft 11 of the engine 10.

[0049] Specifically, when the first clutch 34 is disengaged, the engine shaft 11 of the engine 10 stops rotating and the power output stops; when the first clutch 34 is engaged, the engine shaft 11 of the engine 10 rotates, transmitting power to the first gear 31. Since the first gear 31 and the second gear 32 are meshed, the power is then transmitted to the second gear 32. Meanwhile, the power is transmitted to the third gear 33 rigidly connected to the same motor shaft 21.

[0050] In a possible implementation, the transmission assembly 40 includes a second clutch 45; the second clutch 45 is used to control the connection or disconnection between the third gear 33 and the reducer assembly 50.

[0051] Specifically, the third gear 33 is connected to the transmission assembly 40 through the intermediate first shaft rear gear 432. When the second clutch 45 is disengaged, the power on the third gear 33 cannot be transmitted to the transmission assembly 40 through the intermediate first shaft rear gear 432, and then cannot be transmitted to the reducer assembly 50 through the transmission assembly 40; when the second clutch 45 is engaged, the power on the third gear 33 is transmitted to the transmission assembly 40 through the intermediate first shaft rear gear 432, and then the power is transmitted to the reducer assembly 50 through the transmission assembly 40.

[0052] In a possible implementation, the engine shaft 11 of the engine 10 and the motor shaft 21 of the motor 20 are arranged in parallel.

[0053] Refer to Figure 2 As shown, the transmission assembly 40 includes an intermediate first shaft 41, an intermediate second shaft 42, a first transmission member 43, and a second transmission member 44; the intermediate first shaft 41 transmits power from the third gear 33 to the intermediate second shaft 42 through the first transmission member 43; the intermediate second shaft 42 transmits power from the intermediate first shaft 41 to the reducer assembly 50 through the second transmission member 44.

[0054] Among them, the first transmission member 43 includes an intermediate first shaft front gear 431 and an intermediate first shaft rear gear 432; the second clutch 45 is disposed between the intermediate first shaft rear gear 432 and the intermediate first shaft 41; the intermediate first shaft front gear 431 is rigidly connected to the intermediate first shaft 41; the intermediate first shaft rear gear 432 meshes with the third gear 33. Further, the second transmission member 44 includes an intermediate second shaft front gear 441 and an intermediate second shaft rear gear 442; the intermediate second shaft front gear 441 meshes with the intermediate first shaft front gear 431 for transmitting the power of the intermediate first shaft 41 to the intermediate second shaft 42; the intermediate second shaft front gear 441 and the intermediate second shaft rear gear 442 are coaxially and rigidly connected to the intermediate second shaft 42; the intermediate second shaft rear gear 442 meshes with the reducer assembly 50 for transmitting the power of the intermediate second shaft 42 to the main reducer assembly 50.

[0055] Through the above - arranged reducer assembly 50, functions of speed reduction, torque increase, and power output direction change can be achieved. That is, considering that the output power of the engine 10 or the motor 20 is constant, when the transmission speed is reduced through the reducer assembly 50, a higher output torque can be obtained, and thus a greater driving force can be obtained.

[0056] In a possible implementation manner, the speed - changing assembly and the first clutch 34 are arranged inside the hybrid transmission housing, thereby preventing the external environment from affecting the normal operation of the speed - changing assembly and the first clutch 34.

[0057] In a possible implementation manner, the engine shaft 11 of the engine 10, the motor shaft 21 of the motor 20, the intermediate first shaft 41, and the intermediate second shaft 42 are arranged in parallel.

[0058] It should be noted that the above only exemplarily shows some components of the range - extender system, and the first drive system 100 includes but is not limited to the above - mentioned components.

[0059] In a possible implementation manner, the range - extender system further includes a second drive system 200 and a power battery 300, and the second drive system 200 and the first drive system 100 are respectively connected to the power battery 300.

[0060] In this embodiment, by arranging one motor 20 and one engine 10 in the first drive system 100 and one motor in the second drive system 200, various driving modes of the vehicle are realized through two motors 20 and one engine 10. Compared with the prior art that uses three motors, this embodiment has one less motor, reducing the production cost and making the overall structure of the vehicle simpler.

[0061] To facilitate understanding of the working states of the components of this embodiment in different modes, the following table and Figures 3 - 8It shows the schematic diagrams of the operating states of the engine 10, the motor 20, the second drive system 200, the first clutch 34, and the second clutch 45 when the vehicle is in pure electric four-wheel drive mode, pure electric two-wheel drive mode, range-extended two-wheel drive mode, engine direct-drive two-wheel drive mode, energy recovery mode, and idle mode. Of course, the vehicle includes but is not limited to the above modes, and specific details are not restricted here.

[0062]

[0063] In addition, the following driving methods are just one way that can be achieved in this embodiment. Specifically, reasonable adjustments can be made in combination with the layout, quantity, etc. of the components to achieve more vehicle driving modes.

[0064] In this embodiment, the first drive system 100 serves as the front-wheel drive system, and the second drive system 200 serves as the rear-wheel drive system. Of course, the first drive system 100 can also be used as the rear-wheel drive system, and the second drive system 200 can be used as the front-wheel drive system, and specific details are not restricted here.

[0065] Refer to Figure 3 As shown, it shows the schematic diagram of the transmission route of the embodiment when the vehicle is in pure electric four-wheel drive mode, and at this time only the motor 20 is working.

[0066] Specifically, the power battery 300 transmits the stored electrical energy to the motor 20. The motor 20 converts the obtained electrical energy into mechanical energy to drive the motor shaft 21 to rotate. While the motor shaft 21 rotates, it drives the third gear 33 rigidly connected to the motor shaft 21 to rotate, and the synchronous intermediate first shaft rear gear 432 rotates. At this time, the second clutch 45 is engaged, and the synchronous intermediate first shaft rear gear 432 transmits the force to the synchronous intermediate first shaft front gear 431, the synchronous intermediate second shaft front gear 441, and the synchronous intermediate second shaft rear gear 442 in sequence. Then the synchronous intermediate second shaft rear gear 442 transmits the power to the reducer assembly 50. Finally, after the reducer assembly 50 adjusts to a suitable speed, it is transmitted to the two front wheels through the first drive shaft 70 respectively to achieve front-wheel drive.

[0067] Meanwhile, the power battery 300 also transmits the stored electrical energy to the second drive system 200. The second drive system 200 sequentially passes through the rear drive motor, gears, etc. Finally, after passing through the reducer assembly 60, it is transmitted to the two rear wheels through the second drive shaft 80 respectively. While achieving front-wheel drive, the rear wheels are synchronously driven to achieve pure electric four-wheel drive mode.

[0068] Refer to Figure 4 As shown, it shows the schematic diagram of the transmission route of the embodiment when the vehicle is in pure electric two-wheel drive mode, and at this time only the rear drive motor in the second drive system 200 is working.

[0069] Specifically, the power battery 300 transmits the stored electrical energy to the second drive system 200. The second drive system 200 sequentially transmits the electrical energy through the rear drive motor, gears, etc. Finally, after passing through the reducer assembly 60, it is transmitted to the two rear wheels through the second drive shaft 80 respectively, realizing rear-wheel drive and achieving the pure electric two-wheel drive mode.

[0070] In another embodiment, the front wheels of the vehicle can also be in the pure electric two-wheel drive mode. The power battery 300 transmits the stored electrical energy to the motor 20. The motor 20 converts the obtained electrical energy into mechanical energy. The motor 20 drives the motor shaft 21 to rotate, synchronously driving the third gear 33 rigidly connected to the motor shaft 21 to rotate. The intermediate first shaft rear gear 432 meshing with the third gear 33 rotates synchronously.

[0071] At this time, the second clutch 45 is engaged. The intermediate first shaft rear gear 432 transmits the force to the intermediate first shaft front gear 431, the intermediate second shaft front gear 441, and the intermediate second shaft rear gear 442 in sequence; then the intermediate second shaft rear gear 442 transmits the force to the reducer assembly 50; finally, the reducer assembly 50 transmits the force to the two front wheels through the first drive shaft 70 after reducing the speed to a suitable value, realizing front-wheel drive, that is, the pure electric two-wheel drive mode.

[0072] Refer to Figure 5 As shown, a schematic diagram of the transmission route of an embodiment in which the vehicle is in the extended-range two-wheel drive mode is shown. At this time, the motor 20 and the engine 10 work simultaneously.

[0073] Specifically, the first clutch 34 is closed. While the engine shaft 11 of the engine 10 rotates, it drives the first gear 31 to rotate, and the second gear 32 meshing with the first gear 31 rotates synchronously; further, the third gear 33 rigidly connected to the second gear 32 also rotates synchronously, realizing the transmission of power to the motor shaft 21 of the motor 20; the motor 20 converts the kinetic energy into electrical energy and stores it in the power battery 300. At this time, the engine 10 works to charge the power battery 300.

[0074] Synchronously, the power battery 300 transmits the stored electrical energy to the second drive system 200. The second drive system 200 transmits the electricity through the rear drive motor, gears, etc. in sequence. Finally, after passing through the reducer assembly 60, it is transmitted to the two rear wheels through the second drive shaft 80 respectively, realizing rear-wheel drive.

[0075] In addition, it should be noted that when the vehicle is in the extended-range two-wheel drive mode, the engine 10 rotates at the first speed, the motor 20 rotates at the second speed, and the engine 10 and the motor 20 jointly drive the vehicle to work; where the first speed is less than the second speed. That is, the hybrid transmission 30 converts the low speed of the engine 10 to the high speed of the motor 20, improving the working efficiency of the engine 10. In this embodiment, the first speed and the second speed refer to the rotational speed.

[0076] Reference Figure 6 As shown, a schematic diagram of the transmission route of an embodiment in which the vehicle is in the direct drive two-wheel drive mode of the engine 10 is shown, and at this time only the engine 10 is working.

[0077] Specifically, the first clutch 34 is closed. While the engine shaft 11 of the engine 10 rotates, it drives the first gear 31 to rotate, and synchronously drives the second gear 32 meshing with the first gear 31 to rotate; further, the third gear 33 rigidly connected to the second gear 32 also rotates synchronously, and drives the intermediate first shaft rear gear 432 meshing with the third gear 33 to rotate.

[0078] It should be noted that at this time, the motor 20 is not powered on and working, and the motor shaft 21 is in an idling state.

[0079] Further, the second clutch 45 engages, and the intermediate first shaft rear gear 432 transmits the force to the intermediate first shaft front gear 431, the intermediate second shaft front gear 441, and the intermediate second shaft rear gear 442 in sequence; then the intermediate second shaft rear gear 442 transmits the force to the reducer assembly 50; finally, after the reducer assembly 50 adjusts to a suitable speed, it is transmitted to the two front wheels through the first drive shaft 70 respectively, realizing front-wheel drive, that is, the direct drive two-wheel drive mode of the engine 10.

[0080] It should be noted that when the vehicle is in the direct drive mode of the engine 10, the engine 10 rotates at the third speed, the third gear 33 rotates at the fourth speed, and the engine 10 drives the vehicle to work; where the third speed is less than the fourth speed. That is, the hybrid transmission 30 converts the low speed of the engine 10 to the high speed of the motor 20, improving the working efficiency of the engine 10. In this embodiment, the third speed and the fourth speed refer to rotational speeds.

[0081] Reference Figure 7 As shown, this embodiment shows a schematic diagram of the transmission route of an embodiment in which the vehicle is in the energy recovery mode. At this time, only the motor 20 is working.

[0082] Specifically, the front wheels transmit the mechanical energy to the reducer assembly 50, the transmission component 40, and the third gear 33 in sequence through the first drive shaft 70; the third gear 33 transmits the power to the motor shaft 21 of the motor 20, and the motor 20 is powered on to convert the mechanical energy generated by the rotation of the motor shaft 21 into electrical energy and store it in the power battery 300.

[0083] Synchronously, the rear wheels transmit the mechanical energy to the reducer assembly 60 and the second drive system 200 in sequence through the second drive shaft 80, and the second drive system 200 converts the mechanical energy into electrical energy and stores it in the power battery 300.

[0084] Reference Figure 8 As shown, this embodiment shows a schematic diagram of the transmission route of an embodiment in which the vehicle is in the idle mode, and at this time only the engine 10 is working.

[0085] Specifically, when the first clutch 34 is closed and the engine shaft 11 of the engine 10 rotates, the first gear 31 is driven to rotate, and the second gear 32 meshing with the first gear 31 rotates synchronously; further, the third gear 33 rigidly connected to the second gear 32 also rotates synchronously and drives the intermediate first shaft rear gear 432 meshing with the third gear 33 to rotate. When the third gear 33 rotates, it drives the motor shaft 21 to rotate. The motor 20 is powered on to convert the mechanical energy generated by the rotation of the motor shaft 21 into electrical energy, which is stored in the power battery 300, thus realizing the energy recovery mode.

[0086] This embodiment also discloses a vehicle, which includes the above-described range extender system. The second drive system 200 is arranged at the rear of the vehicle; the power battery 300 is arranged in the middle of the vehicle, and the first drive system 100 is arranged at the front of the vehicle, with a compact structure. By disconnecting or connecting the first drive system 100, the second drive system 200 and the power battery 300 from each other, different drive modes of the vehicle can be realized.

[0087] The front part mentioned here refers to the front of the connection line of the two front wheels; the middle part refers to the area between the connection line of the two front wheels and the connection line of the two rear wheels; the rear part refers to the area between the connection line of the two rear wheels and the power battery 300, so that the overall layout is compact and reasonable.

[0088] The above is only the preferred embodiment of the present application, and it does not impose any form of limitation on the present application. Although the present application has been disclosed as above in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to it into an equivalent embodiment with equivalent changes within the scope of the technical solution of the present application. However, as long as it does not depart from the content of the technical solution of the present application, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. An extended-range system, characterized in that, It includes a first drive system, and the first drive system includes an engine, a motor, a hybrid transmission, a transmission assembly, and a reducer assembly; a speed change assembly is provided in the hybrid transmission, and the speed change assembly is respectively connected to the engine, the motor, and the transmission assembly; the speed change assembly can transmit the power of the engine to the motor, and the speed change assembly can also transmit the power of the engine or the motor to the reducer assembly through the transmission assembly.

2. The range extender system according to claim 1, wherein the speed change assembly includes a first gear, a second gear, and a third gear; the first gear is used to receive the power of the engine; the first gear meshes with the second gear; the second gear and the third gear are coaxially and rigidly connected to the motor shaft of the motor; the third gear is used to transmit power to the transmission assembly.

3. The range extender system according to claim 2, wherein the number of teeth of the first gear is n, and the number of teeth of the second gear is m, and the number of teeth n is less than the number of teeth m.

4. The range extender system according to claim 2, wherein the hybrid transmission includes a first clutch, and the first clutch is arranged between the first gear and the engine shaft of the engine.

5. The range extender system according to claim 2, wherein the transmission assembly includes a second clutch; the second clutch is used to control the connection or disconnection between the third gear and the reducer assembly.

6. The range extender system according to claim 5, wherein the transmission assembly includes an intermediate first shaft, an intermediate second shaft, a first transmission member, and a second transmission member; the intermediate first shaft transmits power from the third gear to the intermediate second shaft through the first transmission member; the intermediate second shaft transmits power from the intermediate first shaft to the reducer assembly through the second transmission member.

7. The range extender system according to claim 6, wherein the first transmission member includes an intermediate first shaft front gear and an intermediate first shaft rear gear; the second clutch is arranged between the intermediate first shaft rear gear and the intermediate first shaft; the intermediate first shaft front gear is rigidly connected to the intermediate first shaft; the intermediate first shaft rear gear meshes with the third gear.

8. The range extender system according to claim 7, wherein the second transmission member includes an intermediate second shaft front gear and an intermediate second shaft rear gear; the intermediate second shaft front gear and the intermediate second shaft rear gear are rigidly connected through the intermediate second shaft; the intermediate second shaft front gear meshes with the intermediate first shaft front gear; the intermediate second shaft rear gear meshes with the reducer assembly.

9. The range extender system according to claim 1, wherein the engine shaft of the engine and the motor shaft of the motor are arranged in parallel.

10. The range extender system according to claim 4, wherein the speed change assembly and the first clutch are arranged in the hybrid transmission housing.

11. The range extender system according to claim 1, wherein The range-extended system further includes a second drive system and a power battery, and the second drive system and the first drive system are respectively connected to the power battery.

12. The range-extended system according to claim 11, wherein the range-extended system includes a range-extended two-wheel drive mode, in which the engine delivers power to the motor through the hybrid transmission, and the motor delivers power to the power battery and drives the second drive system through the power battery.

13. The range-extended system according to claim 12, wherein the range-extended system further includes a pure electric four-wheel drive mode, a pure electric two-wheel drive mode, an engine direct drive two-wheel drive mode, an energy recovery mode, and an idle power generation mode, wherein the first drive system serves as a front drive system and the second drive system serves as a rear drive system.

14. A vehicle, characterized in that, Comprising the range-extended system according to any one of the above claims 1-13.

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