Hybrid powertrain and vehicles

Abstract

The present invention belongs to the field of automobile transmission technology, and particularly relates to a hybrid power transmission system and automobile. The hybrid power transmission system includes an engine, a generator, a drive motor, a planetary gear mechanism, a clutch assembly, a gear assembly, a first shaft, a second shaft and a brake; the clutch assembly includes a first clutch, a second clutch and a third clutch; the planetary gear mechanism includes a sun gear, a planetary gear, a ring gear with external teeth and a planet carrier with meshing teeth; the sun gear is connected to the first shaft, the output shaft of the engine is connected to the ring gear through the first clutch, the ring gear is connected to the first shaft, and the generator is connected to the second shaft; the gear assembly includes a first gear, a second gear, a third gear and a fourth gear; the first gear meshes with the external teeth of the ring gear; the second gear meshes with the meshing teeth; the drive motor is connected to the output end through the fourth gear. In the present invention, the integrated electric drive system improves the power and economy of the automobile.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile transmission, and in particular relates to a hybrid power transmission system and an automobile. Background Art

[0002] Traditional internal combustion engine vehicles have a huge demand and consumption of fossil energy, which has led to a continuous increase in oil consumption and external dependence. The current hybrid power system is mainly divided into three directions, namely series, parallel and hybrid hybrid systems.

[0003] The series-parallel hybrid system relies on the engine to drive the generator to generate electricity, and the generated electricity is directly fed to the drive motor to drive the vehicle or stored in the power battery. This system has a high efficiency loss due to the long transmission chain and limited fuel saving ability. In addition, when the vehicle is required to cover various working conditions, the power selection of the drive motor, generator and engine needs to be very large, resulting in increased costs and layout problems.

[0004] The parallel hybrid system relies on the engine and the drive motor to jointly output power to meet the vehicle's power requirements. However, since the engine speed cannot be decoupled from the vehicle speed, the ability to adjust the engine's high-efficiency zone is limited, and the fuel-saving effect is limited.

[0005] The series-parallel hybrid system combines the advantages of the series and parallel types, but the system is complex and difficult to control. Summary of the invention

[0006] The present invention solves the technical problems of a hybrid power transmission system such as a complex structure, and provides a hybrid power transmission system and a vehicle.

[0007] In view of the above problems, an embodiment of the present invention provides a hybrid power transmission system, including an engine, a generator, a drive motor, a planetary gear mechanism, a clutch assembly, a gear assembly, a first shaft, a second shaft and a brake for braking the first shaft; the clutch assembly includes a first clutch, a second clutch and a third clutch;

[0008] The planetary gear mechanism comprises a sun gear, planetary gears, a ring gear provided with external teeth, and a planet carrier provided with meshing teeth; the sun gear and the ring gear are both meshed with the planetary gears; the sun gear is connected to the first shaft, the output shaft of the engine is connected to the ring gear through the first clutch, the ring gear is connected to the first shaft through the second clutch, and the output shaft of the generator is connected to the second shaft through the third clutch;

[0009] The gear assembly includes a first gear, a fourth gear, and a second gear and a third gear both mounted on the second shaft; the first gear is mounted on the output shaft of the generator and meshes with the external teeth; the second gear meshes with the meshing teeth, and the second gear or the third gear meshes with the reduction gear; the drive motor is connected to the output end through the fourth gear.

[0010] Optionally, a reduction gear is provided at the output end, and the fourth gear and the third gear are respectively meshed on opposite sides of the reduction gear.

[0011] Optionally, a reduction gear is provided at the output end, and the fourth gear and the reduction gear are respectively meshed on opposite sides of the third gear.

[0012] Optionally, the output end is provided with a reduction gear, and the reduction gear is meshed with the third gear; the meshing teeth of the fourth gear and the planet carrier are respectively meshed on opposite sides of the second gear.

[0013] Optionally, the output end is provided with a reduction gear, and the reduction gear is meshed with the second gear; the fourth gear is meshed with the third gear.

[0014] Optionally, the hybrid powertrain system has a generator drive mode, the generator drive mode comprising a generator drive first gear mode, a generator drive second gear mode and a generator drive third gear mode;

[0015] When the hybrid powertrain system is in the generator-driven first gear mode, the second clutch is closed, the first clutch, the third clutch and the brake are all disconnected, and the generator drives the vehicle wheels to rotate;

[0016] When the hybrid powertrain system is in the generator-driven second gear mode, the third clutch is closed, the first clutch, the second clutch and the brake are all disconnected, and the generator drives the vehicle wheels to rotate;

[0017] When the hybrid power transmission system is in the generator driven third gear mode, the brake is closed, the first clutch, the second clutch and the third clutch are all disconnected, and the generator drives the vehicle wheels to rotate.

[0018] Optionally, the hybrid powertrain system has a drive motor drive mode;

[0019] When the hybrid powertrain system is in the drive motor driving mode, the first clutch, the second clutch, the third clutch and the brake are all disconnected, and the drive motor drives the vehicle wheels to rotate.

[0020] Optionally, the hybrid powertrain system has an engine driving mode, the engine driving mode comprising an engine driving first gear mode, an engine driving second gear mode and an engine driving third gear mode;

[0021] When the hybrid power transmission system is in the engine driven first gear mode, the drive motor and the generator are not working, the first clutch and the second clutch are closed, the third clutch and the brake are disconnected, and the engine drives the vehicle wheels to rotate; if the power output by the engine is greater than the preset required power of the vehicle;

[0022] When the hybrid powertrain system is in the engine-driven second gear mode, the drive motor and the generator are both inoperative, the first clutch and the third clutch are both closed, the second clutch and the brake are both disconnected, and the engine drives the vehicle wheels to rotate;

[0023] When the hybrid powertrain system is in the engine-driven third gear mode, the drive motor and the generator are not working, the first clutch and the brake are closed, the second clutch and the third clutch are disconnected, and the engine drives the vehicle wheels to rotate.

[0024] Optionally, the hybrid powertrain system has a hybrid drive mode, the hybrid drive mode comprising a hybrid drive first gear mode, a hybrid drive second gear mode and a hybrid drive third gear mode;

[0025] When the hybrid power transmission system is in the hybrid drive first gear mode, the drive motor or the generator is working, the first clutch and the second clutch are both closed, the third clutch and the brake are both disconnected, if the generator or the drive motor is working in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate at the same time; if the generator or the drive motor is working in the power generation state, the engine drives the vehicle wheels to rotate and drives the drive motor or the generator to generate electricity;

[0026] When the hybrid power transmission system is in the hybrid drive second gear mode, the drive motor or the generator is working, the first clutch and the third clutch are both closed, the second clutch and the brake are both disconnected, if the generator or the drive motor is working in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate at the same time; if the generator or the drive motor is working in the power generation state, the engine drives the vehicle wheels to rotate and drives the drive motor or the generator to generate electricity;

[0027] When the hybrid power transmission system is in the hybrid drive third gear mode, the drive motor or the generator outputs power, the first clutch and the brake are both closed, and the second clutch and the third clutch are both disconnected; if the generator or the drive motor works in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate simultaneously; if the generator or the drive motor works in the power generation state, the engine drives the vehicle wheels to rotate, and drives the drive motor or the generator to generate electricity.

[0028] Optionally, the hybrid powertrain system has a parking power generation mode and a range extension mode;

[0029] When the hybrid powertrain system is in the parking power generation mode, the first clutch is closed, the second clutch, the third clutch and the brake are all disconnected, and the engine drives the generator to generate electricity;

[0030] When the hybrid powertrain system is in the parking power generation mode, the first clutch is closed, the second clutch, the third clutch and the brake are all disconnected, the engine drives the generator to generate electricity, and the drive motor drives the vehicle wheels to rotate.

[0031] In the present invention, the hybrid power transmission system includes a first clutch, a second clutch, a third clutch and a brake. By controlling the closing and disconnection of the first clutch, the second clutch, the third clutch and the brake, the hybrid power transmission system can be controlled to be in different driving modes (the driving modes include three-gear generator driving mode, one-gear driving motor driving mode, three-gear engine driving mode, three-gear hybrid driving mode, one-gear parking power generation mode and one-gear range extension mode), which can effectively improve the power and economy of the car, reduce the torque demand of the drive motor, thereby reducing the volume of the drive motor and meeting the pure electric starting demand of large torque, and can realize non-power interruption shifting. In addition, the drive motor can directly drive the car wheel to rotate through the fourth gear, and the torque response of the drive motor is fast. In addition, the engine and the generator are connected through a primary gear (that is, the gear ring and the first gear are meshed) to achieve speed increase and torque reduction, which can effectively reduce the volume of the generator. In addition, the hybrid power transmission system realizes gear combination through the planetary gear mechanism, which can effectively reduce the axial size of the hybrid power transmission system. The transmission is carried out through the outer teeth of the ring gear and the meshing teeth of the planetary carrier, which can appropriately reduce the practical number of gears. The hybrid power transmission system can cover HEV (Hybrid Electric Vehicle) models and PHEV (Plug-in Hybrid Electricvehicle) models, and has good platformization.

[0032] An embodiment of the present invention further provides a car, comprising the above-mentioned hybrid power transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Figure 1 A schematic diagram of a hybrid power transmission system provided by a first embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a hybrid power transmission system provided by a second embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a hybrid power transmission system provided by a third embodiment of the present invention;

[0037] Figure 4 A schematic diagram of a hybrid power transmission system provided in accordance with a fourth embodiment of the present invention.

[0038] The reference numerals in the specification are as follows:

[0039] 1. Engine; 2. Generator; 3. Drive motor; 4. Planetary gear mechanism; 41. Sun gear; 42. Planetary gear; 43. Ring gear; 44. Planet carrier; 5. Clutch assembly; 51. First clutch; 52. Second clutch; 53. Third clutch; 6. Gear assembly; 61. First gear; 62. Second gear; 63. Third gear; 64. Fourth gear; 7. First shaft; 8. Second shaft; 9. Brake; 10. Reduction gear. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0042] like Figures 1 to 4 As shown, an embodiment of the present invention provides a hybrid power transmission system, including an engine 1, a generator 2, a drive motor 3, a planetary gear mechanism 4, a clutch assembly 5, a gear assembly 6, a first shaft 7, a second shaft 8 and a brake 9 for braking the first shaft 7; the clutch assembly 5 includes a first clutch 51, a second clutch 52 and a third clutch 53; preferably, the first shaft 7 and the second shaft 8 are arranged in parallel.

[0043] The planetary gear mechanism 4 includes a sun gear 41, a planetary gear 42, a ring gear 43 and a planet carrier 44 provided with meshing teeth; the sun gear 41 and the ring gear 43 are both meshed with the planetary gear 42; the sun gear 41 is connected to the first shaft 7, the output shaft of the engine 1 is connected to the ring gear 43 through the first clutch 51, the ring gear 43 is connected to the first shaft 7 through the second clutch 52, and the output shaft of the generator 2 is connected to the second shaft 8 through the third clutch 53; it can be understood that the planetary gear 42 can be set to multiple according to actual needs, and the multiple planetary gears 42 are all located in the ring gear 43 and are meshed with the internal teeth of the ring gear 43; the sun gear 41 is located in the middle of the multiple planetary gears 42, and the sun gear 41 is meshed with the planetary gears 42; all the planetary gears 42 are rotatably mounted on the planet carrier 44.

[0044] Further, the ring gear 43 can be connected to the first clutch 51 through a connecting shaft, and the first clutch 51 includes a first combining portion installed on the output shaft of the engine 1, and a second combining portion installed on the connecting shaft. When the first combining portion and the second combining portion are combined, the engine 1 and the ring gear 43 are a whole; the second clutch 52 includes a third combining portion installed on the ring gear 43, and a fourth combining portion installed on the first shaft 7. When the third combining portion and the fourth combining portion are combined, the ring gear 43 and the first shaft 7 are a whole; the third clutch 53 includes a fifth combining portion installed on the output shaft of the generator 2, and a sixth combining portion installed on the second shaft 8. When the fifth combining portion and the sixth combining portion are combined, the generator 2 and the second shaft 8 are a whole.

[0045] The gear assembly 6 includes a first gear 61, a fourth gear 64, and a second gear 62 and a third gear 63, which are all mounted on the second shaft 8; the first gear 61 is mounted on the output shaft of the generator 2 and meshes with the outer teeth of the gear ring 43; the second gear 62 meshes with the meshing teeth; the drive motor 3 is connected to the output end (i.e., the automobile reduction gear 10) through the fourth gear 64. It can be understood that the fourth gear is mounted on the output shaft of the drive motor 3; the brake 9 and the second clutch 52 are mounted on opposite ends of the first shaft 7, the sun gear 41 is mounted on the first shaft 7, and the sun gear 41 is located between the brake 9 and the second clutch 52. Further, the reduction gear 10 is connected to the automobile reducer, and the automobile reducer is connected to the automobile wheels through the automobile half shaft.

[0046] It should be noted that when the second clutch 52 is closed and the brake 9 is disconnected, the ring gear 43 is connected to the first shaft 7, and the sun gear 41 is also connected to the first shaft 7. At this time, the planetary gear mechanism 4 is a locked whole, that is, it is equivalent to a gear composed of the external teeth of the ring gear 43; when the brake 9 is closed and the second clutch 52 is disconnected, the ring gear 43 drives the planetary carrier 44 to rotate through the planetary gear 42; when the second clutch 52 and the brake 9 are both disconnected, the ring gear 43 can rotate with respect to the planetary gear 42, while the planetary carrier 44 does not rotate; when the second clutch and the brake 9 are both closed, the planetary gear mechanism 4 will be stationary.

[0047] In the present invention, the hybrid power transmission system includes a first clutch 51, a second clutch 52, a third clutch 53 and a brake 9. By controlling the closing and disconnection of the first clutch 51, the second clutch 52, the third clutch 53 and the brake 9, the hybrid power transmission system can be controlled to be in different driving modes (the driving modes include three-gear generator driving mode, one-gear drive motor driving mode, three-gear engine driving mode, three-gear hybrid driving mode, one-gear power generation mode and one-gear range extension mode), which can effectively improve the power and economy of the car, reduce the torque demand of the drive motor 3, thereby reducing the volume of the drive motor 3 and meeting the pure electric starting demand of large torque, and can realize non-power interruption shifting. In addition, the drive motor 3 can directly drive the car wheels to rotate through the fourth gear 64, and the torque response of the drive motor 3 is fast. In addition, the engine 1 and the generator 2 are connected through a primary gear (that is, the gear ring 43 and the first gear 61 are meshed) to achieve speed increase and torque reduction, which can effectively reduce the volume of the generator 2. In addition, the hybrid power transmission system realizes gear combination through the planetary gear mechanism 4, which can effectively reduce the axial size of the hybrid power transmission system. The transmission is carried out through the external teeth of the ring gear 43 and the meshing teeth of the planetary carrier 44, which can appropriately reduce the practical number of gears. The hybrid power transmission system can cover HEV (Hybrid Electric Vehicle) models and PHEV (Plug-in Hybrid Electric vehicle) models, and has good platformization.

[0048] In one embodiment, if Figure 2 As shown, the output end is provided with a reduction gear 10, and the fourth gear 64 and the third gear 63 are respectively meshed on opposite sides of the reduction gear 10. It can be understood that at this time, the rotation of the second shaft 8 drives the reduction gear 10 to rotate through the third gear 63, and then drives the vehicle wheels to rotate; and the rotation of the drive motor 3 drives the vehicle reducer to rotate through the fourth gear 64, and then drives the vehicle wheels to rotate.

[0049] In one embodiment, if Figure 1The output end is provided with a reduction gear 10, which is meshed with the third gear 63; the fourth gear 64 and the reduction gear 10 are respectively meshed on opposite sides of the third gear 63. It can be understood that the driving motor 3 is connected to the reduction gear 10 through the fourth gear 64; and the rotation of the second shaft 8 is transmitted through the third gear 63 to drive the reduction gear 10 to rotate, thereby driving the wheels of the vehicle to rotate; and the driving motor 3 drives the reduction gear 10 to rotate through the fourth gear 64 and the third gear 63, thereby driving the wheels of the vehicle to rotate.

[0050] In one embodiment, if Figure 3 As shown, the output end is provided with a reduction gear 10, which meshes with the third gear 63; the fourth gear 64 and the meshing teeth are respectively meshed on opposite sides of the second gear 62. It can be understood that the driving motor 3 is connected to the reduction gear 10 through the fourth gear 64, the second gear 62, the second shaft 8 and the third gear 63, and at this time, the rotation of the second shaft 8 is transmitted through the third gear 63 to drive the reduction gear 10 to rotate, thereby driving the wheels of the vehicle to rotate; and the driving motor 3 drives the reduction gear 10 to rotate through the fourth gear 64, the second gear 62 and the third gear 63, thereby driving the wheels of the vehicle to rotate.

[0051] In one embodiment, if Figure 4 As shown, the output end is provided with a reduction gear 10, which meshes with the second gear 62; the fourth gear 64 meshes with the third gear 63. It can be understood that the driving motor 3 is connected to the reduction gear 10 through the fourth gear 64, the third gear 63, the second shaft 8 and the second gear 62; and at this time, the rotation of the second shaft 8 drives the reduction gear 10 to rotate through the second gear 62, thereby driving the wheels of the vehicle to rotate; and the driving motor 3 drives the reduction gear 10 to rotate through the fourth gear 64, the second gear 62 and the third gear 63, thereby driving the wheels of the vehicle to rotate.

[0052] In summary, the driving motor 3 of the hybrid power transmission system can drive the vehicle wheels to rotate according to different forms of meshing gears, and the meshing teeth can also drive the vehicle wheels to rotate through the second gear 62 or the third gear 63, thereby improving the applicability of the hybrid power transmission system.

[0053] It should be noted that the following driving modes of the hybrid power transmission device are all based on Figure 1 The technical solution shown in the figure is described, that is, the reduction gear 10 is meshed with the third gear 63; the fourth gear 64 and the reduction gear 10 are respectively meshed at the opposite ends of the third gear 63. Figure 1 The structure in is obtained and will not be repeated here.

[0054] In one embodiment, if Figure 1 As shown, the hybrid powertrain system has a generator drive mode, which includes a generator drive first gear mode, a generator drive second gear mode and a generator drive third gear mode; it can be understood that in the generator drive mode, the vehicle wheels are only driven by the generator 2.

[0055] When the hybrid power transmission system is in the generator driven first gear mode, the second clutch 52 is closed, the first clutch 51, the third clutch 53 and the brake 9 are all disconnected, and the generator 2 drives the vehicle wheels to rotate; specifically, when the second clutch 52 is closed, the planetary gear structure can only rotate as a whole; in this mode, the generator 2 drives the vehicle wheels to rotate through the first gear 61, the ring gear 43, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0056] When the hybrid power transmission system is in the generator driven second gear mode, the third clutch 53 is closed, the first clutch 51, the second clutch 52 and the brake 9 are all disconnected, and the generator 2 drives the vehicle wheels to rotate; specifically, in this mode, the generator 2 drives the vehicle wheels to rotate through the first gear 61, the third clutch 53, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0057] When the hybrid power transmission system is in the generator drive third gear mode, the brake 9 is closed, the first clutch 51, the second clutch 52 and the third clutch 53 are all disconnected, and the generator 2 drives the vehicle wheels to rotate. Specifically, when the brake 9 is closed, the ring gear 43 can drive the planetary carrier 44 to rotate through the planetary gear 42; in this mode, the generator 2 drives the vehicle wheels to rotate through the first gear 61, the ring gear 43, the planetary gear 42, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0058] In this embodiment, the car can work under the sole drive of the generator 2, that is, the car is equivalent to a pure electric car, which reduces the emission of the car and meets the national call for energy conservation and emission reduction.

[0059] In one embodiment, if Figure 1As shown, the hybrid powertrain system has a drive motor driving mode; it can be understood that in this drive mode, the vehicle wheels are only driven by the drive motor 3.

[0060] When the hybrid powertrain is in the drive motor drive mode, the first clutch 51, the second clutch 52, the third clutch 53 and the brake 9 are all disconnected, and the drive motor 3 drives the vehicle wheels to rotate. Specifically, in this mode, the drive motor 3 drives the vehicle wheels to rotate through the fourth gear 64, the third gear 63 and the vehicle differential gear in sequence. In this embodiment, when the vehicle starts, the power of the drive motor 3 can be directly output to the vehicle wheels, and the torque response is fast.

[0061] In one embodiment, if Figure 1 As shown, the hybrid powertrain system has an engine driving mode, which includes an engine driving first gear mode, an engine driving second gear mode and an engine driving third gear mode; it can be understood that in this driving mode, the vehicle wheels are only driven by engine 1.

[0062] When the hybrid power transmission system is in the engine driven first gear mode, the drive motor 3 and the generator 2 are not working, the first clutch 51 and the second clutch 52 are closed, the third clutch 53 and the brake 9 are disconnected, and the engine 1 drives the vehicle wheels to rotate; specifically, when the second clutch 52 is closed, the planetary gear structure can only rotate as a whole; in this mode, the engine 1 drives the vehicle wheels to rotate through the first clutch 51, the ring gear 43, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0063] When the hybrid power transmission system is in the engine-driven second gear mode, the drive motor 3 and the generator 2 are not working, the first clutch 51 and the third clutch 53 are closed, the second clutch 52 and the brake 9 are disconnected, and the engine 1 drives the vehicle wheels to rotate; specifically, in this mode, the engine 1 drives the vehicle wheels to rotate through the first clutch 51, the ring gear 43, the first gear 61, the third clutch 53, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0064] When the hybrid power transmission system is in the engine driven third gear mode, the drive motor 3 and the generator 2 are not working, the first clutch 51 and the brake 9 are closed, the second clutch 52 and the third clutch 53 are disconnected, and the engine 1 drives the vehicle wheels to rotate. Specifically, when the brake 9 is closed, the ring gear 43 drives the planetary carrier 44 to rotate through the planetary gear 42; in this mode, the engine 1 drives the vehicle wheels to rotate through the first clutch 51, the ring gear 43, the planetary gear 42, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0065] In this embodiment, the hybrid power transmission system has a three-gear engine drive mode, which improves the power and economy of the vehicle, and increases the speed ratio range of the vehicle, thereby improving the driving experience of the vehicle.

[0066] In one embodiment, if Figure 1 As shown, the hybrid powertrain system has a hybrid drive mode, and the hybrid drive mode includes a hybrid drive first gear mode, a hybrid drive second gear mode, and a hybrid drive third gear mode;

[0067] When the hybrid power transmission system is in the hybrid drive first gear mode, the drive motor 3 or the generator 2 is working, the first clutch 51 and the second clutch 52 are both closed, and the third clutch 53 and the brake 9 are both disconnected; if the generator 2 or the drive motor 3 is working in the power output state, the engine 1 and the drive motor 3 or the generator 2 that outputs power simultaneously drive the vehicle wheels to rotate; it can be understood that at this time, when the power output of the engine 1 is less than the preset required power of the vehicle, the power output of the drive motor 3 or the generator 2 and the power output of the engine 1 simultaneously drive the vehicle wheels to rotate, thereby meeting the requirements for normal driving of the vehicle. At this time, the engine 1 drives the vehicle wheels to rotate in the power transmission path of the engine first gear mode; if the drive motor 3 drives the vehicle wheels to rotate, the power of the drive motor 3 drives the vehicle wheels to rotate through the fourth gear 64, the third gear 63 and the differential gear 10 in sequence; if the generator 2 drives the vehicle wheels to rotate, the power of the generator 2 drives the vehicle wheels to rotate through the first gear 61, the ring gear 43, the planetary gear 42, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0068] If the generator 2 or the drive motor 3 is working in the power generation state, the engine 1 drives the wheels of the vehicle to rotate, and drives the drive motor 3 or the generator 2 to generate electricity; if the power output by the engine 1 is greater than the preset required power of the vehicle (that is, the power output by the engine meets the power required by the vehicle wheels, and there is still excess power), the engine 1 drives the wheels of the vehicle to rotate, and at the same time, the engine 1 also drives the generator 2 or the drive motor 3 to generate electricity; if the engine 1 drives the generator 2 to generate electricity, the power of the engine 1 drives the generator 2 to generate electricity through the first clutch 51, the ring gear 43, and the first gear 61 in sequence. If the engine 1 drives the drive motor 3 to generate electricity, the power of the engine drives the drive motor to generate electricity through the first clutch 51, the ring gear 43, the meshing teeth of the planet carrier 44, the second gear 62, the second shaft 8, the third gear 63, and the fourth gear 64 in sequence.

[0069] When the hybrid power transmission system is in the hybrid drive second gear mode, the drive motor 3 or the generator 2 is working, the first clutch 51 and the third clutch 53 are both closed, and the second clutch 52 and the brake 9 are both disconnected; if the generator 2 or the drive motor 3 is working in the power output state, the engine 1 and the drive motor 3 or the generator 2 that outputs power drive the vehicle wheels to rotate at the same time. At this time, the engine 1 drives the vehicle wheels to rotate in the engine second gear driving mode; if the drive motor 3 drives the vehicle wheels to rotate, the power of the drive motor 3 drives the vehicle wheels to rotate through the fourth gear 64, the third gear 63 and the differential gear 10 in sequence; if the generator 2 drives the vehicle wheels to rotate, the counter power of the generator 2 drives the vehicle wheels to rotate through the first gear 51, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0070] If the generator 2 or the drive motor 3 is working in the power generation state, the engine 1 drives the wheels of the vehicle to rotate, and drives the drive motor 3 or the generator 2 to generate electricity; if the power output by the engine 1 is greater than the preset required power of the vehicle, the engine 1 drives the wheels of the vehicle to rotate, and at the same time, the engine 1 also drives the generator 2 or the drive motor 3 to generate electricity. If the engine 1 drives the generator 2 to generate electricity, the power of the engine 1 drives the generator 2 to generate electricity through the first clutch 51, the ring gear 43, and the first gear 61 in sequence. If the engine 1 drives the drive motor 3 to generate electricity, the power of the engine drives the drive motor 3 to generate electricity through the first clutch 51, the ring gear 43, the first gear 61, the third clutch 53, the second shaft 8, the third gear 63, and the fourth gear 64 in sequence.

[0071] When the hybrid power transmission system is in the hybrid drive third gear mode, the drive motor 3 or the generator 2 outputs and works, the first clutch 51 and the brake 9 are both closed, and the second clutch 52 and the third clutch 53 are both disconnected; if the generator 2 or the drive motor 3 works in the power output state, the engine 1 and the drive motor 3 or the generator 2 that outputs power drive the vehicle wheels to rotate at the same time. At this time, the engine 1 drives the vehicle wheels to rotate in the engine third gear driving mode; if the drive motor 3 drives the vehicle wheels to rotate, the power of the drive motor 3 drives the vehicle wheels to rotate through the fourth gear 64, the third gear 63 and the differential gear 10 in sequence; if the generator 2 drives the vehicle wheels to rotate, the counter power of the generator 2 drives the vehicle wheels to rotate through the first gear 51, the ring gear 43, the planetary gear 42, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63 and the reduction gear 10 in sequence.

[0072] If the generator 2 or the drive motor 3 is working in the power generation state, the engine 1 drives the wheels of the vehicle to rotate, and drives the drive motor 3 or the generator 2 to generate electricity. If the power output by the engine 1 is greater than the preset required power of the vehicle, the engine 1 drives the wheels of the vehicle to rotate, and at the same time, the engine 1 also drives the generator 2 or the drive motor 3 to generate electricity. If the engine 1 drives the generator 2 to generate electricity, the power of the engine 1 drives the generator 2 to generate electricity through the first clutch 51, the ring gear 43, and the first gear 61 in sequence. If the engine 1 drives the drive motor 3 to generate electricity, the power of the engine drives the drive motor 3 to generate electricity through the first clutch 51, the ring gear 43, the planetary gear 42, the meshing teeth of the planetary carrier 44, the second gear 62, the second shaft 8, the third gear 63, and the fourth gear 64 in sequence.

[0073] In one embodiment, if Figure 1 As shown, the hybrid powertrain system has a parking power generation mode and a range extension mode;

[0074] When the hybrid power transmission system is in the parking power generation mode, the first clutch 51 is closed, the second clutch 52, the third clutch 53 and the brake 9 are all disconnected, and the engine 1 drives the generator 2 to generate electricity; specifically, in this mode, the engine 1 drives the generator 2 to reverse through the first clutch 51, the ring gear 43, the planetary gear 42 and the first gear 61 in sequence, thereby achieving the technical effect of charging the generator 2, thereby improving the energy utilization rate of the engine 1.

[0075] When the hybrid power transmission system is in the parking power generation mode, the first clutch 51 is closed, the second clutch 52, the third clutch 53 and the brake 9 are all disconnected, the engine 1 drives the generator 2 to generate electricity, and the drive motor 3 drives the vehicle wheels to rotate. Specifically, in this mode, the engine 1 drives the generator 2 to reverse through the first clutch 51, the ring gear 43, the planetary gear 42 and the first gear 61 in sequence, and if the drive motor 3 outputs power, the drive motor 3 drives the vehicle wheels to rotate through the fourth support wheel, the third gear 63 and the vehicle differential gear in sequence.

[0076] In summary, the driving modes included in the hybrid power transmission mechanism are shown in Table 1:

[0077] Table 1 Driving mode table of hybrid coupling mechanism

[0078]

[0079] Another embodiment of the present invention further provides an automobile, comprising the hybrid power transmission system.

[0080] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hybrid powertrain system, characterized in that: The invention comprises an engine, a generator, a drive motor, a planetary gear mechanism, a clutch assembly, a gear assembly, a first shaft, a second shaft and a brake for braking the first shaft; the clutch assembly comprises a first clutch, a second clutch and a third clutch; The planetary gear mechanism comprises a sun gear, planetary gears, a ring gear provided with external teeth, and a planet carrier provided with meshing teeth; the sun gear and the ring gear are both meshed with the planetary gears; the sun gear is connected to the first shaft, the output shaft of the engine is connected to the ring gear through the first clutch, the ring gear is connected to the first shaft through the second clutch, and the output shaft of the generator is connected to the second shaft through the third clutch; The gear assembly includes a first gear, a fourth gear, and a second gear and a third gear both mounted on the second shaft; the first gear is mounted on the output shaft of the generator and meshes with the outer teeth of the ring gear; the second gear meshes with the meshing teeth of the planet carrier; the drive motor is connected to the output end through the fourth gear; The second clutch includes a third coupling portion mounted on the ring gear and a fourth coupling portion mounted on the first shaft; the third clutch includes a fifth coupling portion mounted on the generator output shaft and a sixth coupling portion mounted on the second shaft.

2. The hybrid powertrain system according to claim 1, characterized in that: The output end is provided with a reduction gear, and the fourth gear and the third gear are respectively meshed on opposite sides of the reduction gear.

3. The hybrid powertrain system according to claim 1, characterized in that: The output end is provided with a reduction gear, and the fourth gear and the reduction gear are respectively meshed with the opposite sides of the third gear.

4. The hybrid powertrain system according to claim 1, characterized in that: The output end is provided with a reduction gear, and the reduction gear is meshed with the third gear; the meshing teeth of the fourth gear and the planet carrier are respectively meshed with the opposite sides of the second gear.

5. The hybrid powertrain system according to claim 1, characterized in that: The output end is provided with a reduction gear, and the reduction gear is meshed with the second gear; the fourth gear is meshed with the third gear.

6. The hybrid powertrain system according to claim 1, characterized in that: The hybrid powertrain system has a generator drive mode, the generator drive mode including a generator drive first gear mode, a generator drive second gear mode and a generator drive third gear mode; When the hybrid powertrain system is in the generator-driven first gear mode, the second clutch is closed, the first clutch, the third clutch and the brake are all disconnected, and the generator drives the vehicle wheels to rotate; When the hybrid powertrain system is in the generator-driven second gear mode, the third clutch is closed, the first clutch, the second clutch and the brake are all disconnected, and the generator drives the vehicle wheels to rotate; When the hybrid power transmission system is in the generator driven third gear mode, the brake is closed, the first clutch, the second clutch and the third clutch are all disconnected, and the generator drives the vehicle wheels to rotate.

7. The hybrid powertrain system according to claim 1, characterized in that: The hybrid powertrain system has a drive motor drive mode; When the hybrid powertrain system is in the drive motor driving mode, the first clutch, the second clutch, the third clutch and the brake are all disconnected, and the drive motor drives the vehicle wheels to rotate.

8. The hybrid powertrain system according to claim 1, characterized in that: The hybrid powertrain system has an engine driving mode, the engine driving mode including an engine driving first gear mode, an engine driving second gear mode and an engine driving third gear mode; When the hybrid powertrain system is in the engine driven first gear mode, the drive motor and the generator are not working, the first clutch and the second clutch are both closed, the third clutch and the brake are both disconnected, and the engine drives the vehicle wheels to rotate; When the hybrid powertrain system is in the engine-driven second gear mode, the drive motor and the generator are both inoperative, the first clutch and the third clutch are both closed, the second clutch and the brake are both disconnected, and the engine drives the vehicle wheels to rotate; When the hybrid powertrain system is in the engine-driven third gear mode, the drive motor and the generator are not working, the first clutch and the brake are closed, the second clutch and the third clutch are disconnected, and the engine drives the vehicle wheels to rotate.

9. The hybrid powertrain system according to claim 1, characterized in that: The hybrid power transmission system has a hybrid drive mode, and the hybrid drive mode includes a hybrid drive first gear mode, a hybrid drive second gear mode and a hybrid drive third gear mode; When the hybrid power transmission system is in the hybrid drive first gear mode, the drive motor or the generator is working, the first clutch and the second clutch are both closed, the third clutch and the brake are both disconnected, if the generator or the drive motor is working in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate at the same time; if the generator or the drive motor is working in the power generation state, the engine drives the vehicle wheels to rotate and drives the drive motor or the generator to generate electricity; When the hybrid power transmission system is in the hybrid drive second gear mode, the drive motor or the generator is working, the first clutch and the third clutch are both closed, and the second clutch and the brake are both disconnected; if the generator or the drive motor is working in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate at the same time; if the generator or the drive motor is working in the power generation state, the engine drives the vehicle wheels to rotate and drives the drive motor or the generator to generate electricity; When the hybrid power transmission system is in the hybrid drive third gear mode, the drive motor or the generator outputs power, the first clutch and the brake are both closed, and the second clutch and the third clutch are both disconnected; if the generator or the drive motor works in the power output state, the engine and the drive motor or the generator that outputs power drive the vehicle wheels to rotate simultaneously; if the generator or the drive motor works in the power generation state, the engine drives the vehicle wheels to rotate, and drives the drive motor or the generator to generate electricity.

10. The hybrid powertrain system according to claim 1, characterized in that: The hybrid powertrain system has a parking power generation mode; When the hybrid powertrain system is in the parking power generation mode, the first clutch is closed, the second clutch, the third clutch and the brake are all disconnected, and the engine drives the generator to generate electricity.

11. The hybrid powertrain system according to claim 1, characterized in that: The hybrid powertrain system has an extended range mode; When the hybrid powertrain is in the range-extending mode, the first clutch is closed, the second clutch, the third clutch and the brake are all disconnected, the engine drives the generator to generate electricity, and the drive motor drives the vehicle wheels to rotate.

12. A car, characterized in that: A hybrid powertrain system comprising any one of claims 1 to 11.

Images