Hybrid transmission with generator driving

Abstract

The present invention relates to the technical field of hybrid power transmissions, and in particular to a hybrid power transmission in which a generator is involved in driving, which is composed of three power sources, a generator, a drive motor and an engine, and a gear clutch transmission system, wherein the gear clutch transmission system comprises two sets of clutches, wherein the first clutch is coaxially arranged with the engine and is used to connect and disconnect the engine, and the second clutch is arranged on the hybrid drive output shaft and is used to connect and disconnect the engine, the generator and the transmission output end, and the gear clutch transmission system comprises a power generation module, a generator drive system, an engine drive system and a drive motor drive module; and further comprises a hydraulic system and a cooling and lubrication system, wherein the hydraulic system controls the operation of the clutch, and the cooling and lubrication system provides cooling and lubrication for the motor and the gear clutch transmission system. The application of the dual-motor pure electric drive in which the generator is involved in driving and the dual clutch consisting of two inner and outer wet multi-plate clutches are two important features of the present invention.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid power transmission, in particular to a hybrid power transmission with a generator participating in driving. Background Art

[0002] With the rapid growth of the global automobile ownership, the pressure on energy, environment, safety and other aspects is increasing, which has accelerated the global automobile energy conservation and electrification process. Faced with the industry bottlenecks such as the range anxiety of pure electric vehicles, the imperfect construction of charging infrastructure, and the difficulty of achieving major technological breakthroughs in power batteries in the short and medium term, pure electric vehicles are currently unable to meet the current market demand for automobile use.

[0003] Conventional hybrid electric vehicles (HEV) and plug-in hybrid electric vehicles (PHEV) can not only meet the current domestic and international target demands for emission and energy conservation, but also meet the current market usage conditions to a high extent, and have been widely promoted and applied around the world.

[0004] At present, most Japanese and European and American hybrid models adopt the ordinary hybrid (HEV) solution. Due to the rapid development of automobile battery technology in China, the plug-in hybrid (PHEV) solution is the main one. As the core component of hybrid models, hybrid transmissions have developed rapidly in recent years. At present, most of the hybrid transmissions that have been mass-produced in China use the P1+P3 hybrid architecture solution. The generator is directly connected to the engine through gears and splines as a P1 motor, and does not have an independent drive function. The advantages of this solution are simple structure and low control difficulty. It can adapt well to the needs of HEV and PHEV models at the same time. However, since pure electric drive can only rely on the drive motor, the drive motor needs to have higher torque and power, which increases the manufacturing cost of the transmission motor. PHEV models are mainly pure electric drive, and the generator is only used for power generation, which will lead to insufficient utilization of the generator. The hybrid transmission with P2+P3 architecture can solve this problem well. A clutch is added between the generator as the P2 motor and the engine to separate the generator and the engine. When the clutch is opened, the generator can participate in the vehicle drive. The dual-motor drive can give the vehicle powerful driving power. At the same time, this solution can reduce the power torque demand for the drive motor to reduce the motor cost. It can be said that the P2+P3 architecture is a hybrid transmission solution designed specifically for PHEV models. At present, the company has a mass-produced hybrid transmission that adopts the P2+P3 architecture solution. It is very popular with users because of its powerful pure electric drive power. However, the mass production solution has a complex structure and high manufacturing cost, and the non-modular design solution makes it difficult to expand the function design. Therefore, the need to develop a hybrid transmission with powerful functions, simple structure, low manufacturing cost, modular design that can expand multiple varieties of functions, and small size that can cover more models has become an urgent problem that needs to be solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a hybrid power transmission in which a generator participates in driving is provided.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a hybrid power transmission driven by a generator, comprising:

[0007] a power source, which includes a generator, a drive motor, and an engine with a shock absorber;

[0008] The gear clutch transmission system is used to transmit power between the generator, the drive motor, the engine and the differential. The clutch system consists of two clutches. The first clutch is coaxially arranged with the engine, connected to the input flange and the input shaft for connecting and disconnecting the engine. The second clutch for realizing single-speed drive and the double-clutch for realizing two-speed drive are arranged on the hybrid drive output shaft to determine whether the power of the generator and the engine can participate in the vehicle drive. The gear clutch transmission system includes a power generation module, a generator single / two-speed drive module, an engine single / two-speed drive module and a drive motor drive module;

[0009] Hydraulic system, used to control the closing and opening of the clutch in the clutch system, realize the connection and separation of engine power, and determine whether the power of the engine and generator participates in vehicle driving;

[0010] The cooling and lubrication system is used to cool the stator and rotor of the generator and drive motor, as well as to cool and lubricate the gear transmission system and clutch system.

[0011] Furthermore, the power generation module in the gear clutch transmission system includes a power generation driven gear and an input shaft, wherein the power generation driven gear is arranged on the generator gear shaft, and the generator gear shaft is spline-connected with the generator rotor shaft, and a hybrid drive driving gear is arranged on the input shaft, and the hybrid drive driving gear is meshed with the power generation driven gear on the generator gear shaft; the first clutch is arranged between the input shaft and the input flange, and the input flange is spline-connected with the shock absorber on the engine; when the first clutch is closed, the power of the engine drives the generator to generate electricity through the shock absorber, the input flange, the first clutch, the input shaft, the hybrid drive driving gear, the power generation driven gear, the generator gear shaft, and the generator rotor shaft, thereby forming a power generation module.

[0012] Further, the generator single-speed drive system in the gear clutch transmission system includes a generator driven gear, a hybrid drive driving gear, a second clutch, a hybrid drive output shaft and a differential, wherein the hybrid drive output shaft is provided with a hybrid drive driven gear; the hybrid drive driven gear is meshed with the hybrid drive driving gear on the input shaft; the hybrid drive output shaft is also provided with a second clutch; the second clutch is provided at the motor side end of the hybrid drive output shaft; the hybrid drive driven gear and the hybrid drive output shaft are connected through the second clutch; the hybrid drive output shaft is also provided with a hybrid drive main reduction driving gear, and the differential is provided with a main reduction driven gear; the main reduction driven gear is meshed with the hybrid drive main reduction driving gear on the hybrid drive output shaft;

[0013] When the first clutch is opened and the second clutch is closed, the power of the generator drives the vehicle through the generator rotor shaft, the generator gear shaft, the generator driven gear, the hybrid drive driving gear, the hybrid drive driven gear, the second clutch, the hybrid drive output shaft, the hybrid drive main reduction driving gear, the main reduction driven gear, and the differential, forming a generator single-speed drive module.

[0014] Furthermore, the engine single-speed drive system in the gear clutch transmission system includes an input flange, a first clutch, an input shaft, a hybrid drive output shaft and a differential. When the first clutch and the second clutch are both closed, the power of the engine drives the vehicle through the shock absorber, the input flange, the first clutch, the input shaft, the hybrid drive driving gear, the hybrid drive driven gear, the second clutch, the hybrid drive output shaft, the hybrid drive main reduction driving gear, the main reduction driven gear, and the differential, forming an engine single-speed drive module.

[0015] Furthermore, the drive motor drive module in the gear clutch transmission system includes a drive motor gear shaft, an electric drive output shaft and a differential; the drive motor gear shaft is splined with the drive motor rotor shaft, the drive motor gear shaft is provided with an electric drive driving gear, the electric drive output shaft is provided with an electric drive main reduction driving gear and an electric drive driven gear, the electric drive driven gear is meshed with the electric drive driving gear on the drive motor gear shaft, the main reduction driven gear on the electric drive main reduction driving gear differential is meshed, the power of the drive motor is rotated through the drive motor rotor shaft, the drive motor gear shaft, the electric drive driving gear, the electric drive driven gear, the electric drive output shaft, and the electric drive main reduction driving gear, the main reduction driven gear and the differential drive the vehicle to travel, and constitute a drive motor drive module.

[0016] Furthermore, the generator single / two-speed drive module and the drive motor drive module together constitute a dual-motor drive module.

[0017] Furthermore, the main reduction driven gear on the differential is meshed with the hybrid drive main reduction driving gear and the electric drive main reduction driving gear at the same time, and the driving forces from the two places are gathered to the differential for vehicle driving.

[0018] Further, the first clutch is arranged between the input shaft and the input flange, and is composed of a clutch inner hub, a clutch friction plate, a clutch steel plate, a clutch outer hub with a retaining ring, a clutch piston, a clutch return spring and a clutch return spring baffle. The clutch inner hub is welded to the input flange and is also connected to the clutch friction plate by a sliding spline. The clutch outer hub with a retaining ring is welded to the hybrid drive driving gear and is also connected to the clutch steel plate by a sliding spline. The clutch piston is arranged in the space between the input shaft and the hybrid drive driving gear and is slidably connected to the input shaft through its inner diameter and to the hybrid drive driving gear through its outer diameter, thereby forming a clutch hydraulic working chamber.

[0019] Furthermore, the second clutch is arranged on the hybrid drive output shaft, which is composed of a clutch inner hub, a clutch friction plate, a clutch steel plate, a clutch outer hub with a retaining ring, a clutch piston, a clutch return spring, a clutch return spring baffle and a clutch outer hub support. The clutch inner hub is welded and connected to the hybrid drive driven gear, and is also splined to the clutch friction plate; the clutch outer hub with a retaining ring is welded and connected to the clutch outer hub support, and is also splined to the clutch steel plate; the clutch outer hub support is splined to the hybrid drive output shaft; the clutch piston is installed in the space formed by the clutch outer hub support and is slidably connected to the clutch outer hub support, forming a second clutch hydraulic working chamber between the clutch piston and the clutch outer hub support.

[0020] Furthermore, a hybrid drive second driving gear is arranged on the input shaft near the motor side, a hybrid drive driven gear on the hybrid drive output shaft is provided with a hybrid drive second driven gear meshing with the hybrid drive second driving gear, and a dual-clutch second clutch is also arranged at the motor-side end of the hybrid drive output shaft, that is, a hybrid power transmission in which both the generator and the engine can be driven in two gears; the dual-clutch second clutch is composed of two groups of wet multi-plate clutches, an inner clutch and an outer clutch, and when the inner clutch is closed and the outer clutch is opened, the power of the generator and the engine is transmitted to the hybrid drive output shaft through the hybrid drive driving gear, the hybrid drive driven gear, and the inner clutch; when the inner clutch is opened and the outer clutch is closed, the power of the generator and the engine is transmitted to the hybrid drive output shaft through the hybrid drive second driving gear, the hybrid drive second driven gear, and the outer clutch, and the vehicle is driven to travel through the hybrid drive main reduction driving gear, the main reduction driven gear, and the differential, thereby realizing the two-gear driving function of the generator and the engine.

[0021] Furthermore, the inner clutch is composed of an inner clutch inner hub, an inner clutch friction plate, an inner clutch steel plate, an inner clutch piston, an inner clutch return spring, an inner clutch return spring baffle, a clutch intermediate hub with inner and outer retaining rings, and a clutch intermediate hub support; the outer clutch is composed of a clutch intermediate hub with inner and outer retaining rings, a clutch intermediate hub support, an outer clutch outer hub, an outer clutch friction plate, an outer clutch steel plate, an outer clutch piston, an outer clutch piston support, an outer clutch return spring, and an outer clutch return spring baffle; the inner clutch inner hub is welded to the hybrid drive driven gear and is connected to the inner clutch friction plate sliding spline; the clutch intermediate hub with inner and outer retaining rings is connected to the hybrid drive driven gear and is connected to the hybrid drive driven gear by sliding splines ... and is connected to the hybrid drive driven gear by sliding splines; the clutch intermediate hub with inner and outer retaining rings is connected to the hybrid drive driven gear and is connected to the hybrid drive driven gear and is connected to the hybrid The clutch intermediate hub support is welded and connected with the inner clutch steel plate and the outer clutch steel plate by sliding splines at the same time. The outer clutch outer hub is welded and connected with the second driven gear of the hybrid drive and is connected with the outer clutch friction plate by sliding splines at the same time. The clutch intermediate hub support is splined to the hybrid drive output shaft. The inner clutch piston is installed in the space formed by the clutch intermediate hub support and is slidingly connected with the clutch intermediate hub support to form an inner clutch hydraulic working chamber. The outer clutch piston is installed in the space formed by the outer clutch piston support and is slidingly connected with the outer clutch piston support to form an outer clutch hydraulic working chamber. The outer clutch piston support is splined to the hybrid drive output shaft.

[0022] Further, the hydraulic system includes a high-pressure oil pump, a first clutch solenoid valve and a high-pressure oil circuit for controlling the operation of the first clutch, a second clutch solenoid valve and a high-pressure oil circuit for controlling the operation of the second clutch when the engine and the generator are driven in single gear, an inner clutch solenoid valve and a high-pressure oil circuit for controlling the operation of the inner clutch of the second clutch of the dual clutch when the engine and the generator are driven in two gears, and an outer clutch solenoid valve and a high-pressure oil circuit for controlling the operation of the outer clutch of the second clutch of the dual clutch;

[0023] When the first clutch solenoid valve and the high-pressure oil circuit are at high pressure, the high-pressure lubricating oil enters the first clutch hydraulic working chamber through the central oil hole at the left end of the input shaft, driving the clutch piston to move in the piston space formed by the input shaft and the hybrid drive driving gear, thereby closing the first clutch; when the first clutch solenoid valve and the high-pressure oil circuit are at low pressure, the clutch return spring returns the clutch piston to open the first clutch;

[0024] When the engine and generator are driven in single gear, when the second clutch solenoid valve and the high-pressure oil circuit are at high pressure, the high-pressure lubricating oil enters the hydraulic working chamber of the second clutch through the center hole at the left end of the hybrid drive output shaft, driving the clutch piston to move in the piston space of the clutch outer hub support, thereby realizing the closing of the second clutch; when the second clutch solenoid valve and the high-pressure oil circuit are at low pressure, the clutch return spring returns the clutch piston to realize the opening of the second clutch.

[0025] When the engine and generator are driven in two gears, when the inner clutch solenoid valve and the high-pressure oil circuit are at high pressure, the high-pressure oil enters the inner clutch hydraulic working chamber through the center hole at the left end of the hybrid drive output shaft, and the hydraulic pressure pushes the inner clutch piston to move in the piston space of the clutch intermediate hub support to achieve the closing of the inner clutch; when the inner clutch solenoid valve and the high-pressure oil circuit are at low pressure, the inner clutch return spring returns the inner clutch piston to achieve the opening of the inner clutch; when the outer clutch solenoid valve and the high-pressure oil circuit are at high pressure, the hydraulic oil enters the eccentric hole closed at one end through the outer diameter of the hybrid drive output shaft and then enters the outer clutch hydraulic working chamber, and the hydraulic pressure pushes the outer clutch piston to move to achieve the closing of the outer clutch; when the outer clutch solenoid valve and the high-pressure oil circuit are at low pressure, the outer clutch return spring returns the outer clutch piston to achieve the opening of the outer clutch.

[0026] Furthermore, the cooling and lubricating system is composed of a low-pressure oil pump, an oil cooler, a cooling and lubricating oil circuit, and various branch oil circuits. The low-pressure oil pump pumps out the lubricating oil at the bottom of the gearbox, enters the oil cooler fixed on the outside of the gearbox housing through the housing oil passage, and the vehicle's water cooling facilities provide cooling water to perform heat exchange in the oil cooler to cool the lubricating oil, and the cooled lubricating oil is circulated into the gearbox housing, and is transported to all operating and heat-generating parts in the gearbox through the cooling and lubricating oil circuit and various branch oil circuits in the gearbox housing. The cooling and lubricating oil circuit is arranged in the gearbox housing on the engine side.

[0027] The cooling and lubrication system also includes various branch oil circuits, each branch oil circuit includes a generator stator cooling oil pipe, a drive motor stator cooling oil pipe, an oil collecting tank and a high-low pressure connecting oil circuit, and a branch oil circuit composed of 7 hollow shafts and housing oil holes, including an input flange and input shaft branch oil circuit, a generator gear shaft and a generator rotor shaft branch oil circuit, a drive motor gear shaft and a drive motor rotor shaft branch oil circuit, an electric drive output shaft branch oil circuit and a hybrid drive output shaft branch oil circuit; when the engine and the generator are driven in two gears, an external clutch cooling and lubrication branch oil circuit for providing cooling and lubrication to the external clutch of the second clutch of the dual clutch is also provided on the transmission housing;

[0028] The generator stator cooling oil pipe guides the cooling lubricating oil to the upper part of the generator stator and sprays it to the part of the generator stator that needs to be cooled; the drive motor stator cooling oil pipe guides the cooling lubricating oil to the upper part of the drive motor stator and sprays it to the part of the drive motor stator that needs to be cooled;

[0029] The high-low pressure connecting oil circuit includes a switch valve and a relief valve. When the clutch is not working, the two clutch solenoid valves and the high-pressure oil circuit that control the operation of the clutch are at low pressure, the switch valve of the high-low pressure connecting oil circuit is opened, and the lubricating oil of the high-pressure oil circuit enters the low-pressure oil circuit as a supplement to the low-pressure oil circuit. When the generator or engine needs to work, at least one of the first clutch solenoid valve and the high-pressure oil circuit and the second clutch solenoid valve and the high-pressure oil circuit needs high-pressure oil, the switch valve of the high-low pressure connecting oil circuit is closed, and the excess high-pressure oil generated by the continuous operation of the high-pressure oil pump enters the low-pressure oil circuit through the relief valve of the high-low pressure connecting oil circuit;

[0030] The generator gear shaft and the generator rotor shaft branch oil circuit transport the cooling lubricating oil of the cooling and lubricating oil circuit to the center hole of the generator rotor shaft, and while completing the lubrication of the bearings on the shaft, transport the cooling lubricating oil to the rotor part of the generator that needs to be cooled through the oil holes on the generator rotor shaft; the drive motor gear shaft and the drive motor rotor shaft branch oil circuit transport the cooling lubricating oil of the cooling and lubricating oil circuit to the center hole of the drive motor rotor shaft, and while completing the lubrication of the bearings, transport the cooling lubricating oil to the rotor part of the drive motor that needs to be cooled;

[0031] The input flange and input shaft branch oil circuits mix and drive the output shaft branch oil circuit to deliver the cooling and lubricating oil of the cooling and lubricating oil circuits to the two clutches and the bearings that need cooling and lubrication. The electric drive output shaft branch oil circuit is only used for lubrication of the right end bearing of the electric drive output shaft; the oil collecting tank collects the lubricating oil splashed by the operation of the gears in the gearbox and gathers it to the upper center of the generator stator for supplementary cooling of the generator stator;

[0032] When the engine and generator are driven in two gears, the cooling and lubricating branch oil circuit of the external clutch transports the cooling lubricating oil of the cooling and lubricating oil circuit to the rear end of the engine drive output shaft through the housing oil circuit, and then transports it to the part of the external clutch that needs cooling and lubrication through the eccentric hole on the shaft.

[0033] The branch oil circuits involved in clutch cooling and lubrication include the input flange and input shaft branch oil circuits, the hybrid drive output shaft branch oil circuits, and the external clutch cooling and lubrication branch oil circuits. In addition to providing cooling and lubrication for the clutch, they also balance the clutch piston to ensure that the clutch piston remains in the clutch open state when the shaft is rotating at high speed and there is no hydraulic drive.

[0034] Beneficial effects of the present invention:

[0035] Compared with the prior art, the present invention improves the gear clutch transmission system, optimizes the distribution and arrangement of gears and clutches, has high integration, simple structure, small space occupation, improves power response and acceleration performance, and reduces energy loss during transmission;

[0036] By opening and closing the clutch in the gear clutch transmission system, the engine power is connected or disconnected, as well as the engine and generator power are connected or disconnected with the hybrid drive output shaft, so that the hybrid transmission is in different drive modes. It can realize functions such as engine start and stop, parking power generation, generator drive, engine drive, drive motor drive, dual motor drive, reversing, and brake energy recovery, ultimately improving the vehicle's fuel economy and meeting emission requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present invention (a single-speed hybrid power transmission in which the generator can participate in driving).

[0039] Figure 2 It is a schematic diagram of the structure of the second embodiment of the present invention (a two-speed hybrid power transmission in which the generator can participate in the driving).

[0040] Figure 3 yes Figure 2 A schematic diagram of the partially enlarged structure of the second clutch of the dual-clutch transmission.

[0041] In the figure: 1. shock absorber; 2. input flange; 3. input shaft; 4. hybrid drive driving gear; 5. hybrid drive second driving gear; 6. generator gear shaft; 7. generator driven gear; 8. generator rotor shaft; 9. drive motor rotor shaft; 10. drive motor gear shaft; 11. electric drive driving gear; 12. electric drive output shaft; 13. electric drive driven gear; 14. electric drive main reduction driving gear; 15. differential; 16. main reduction driven gear; 17. hybrid drive output shaft; 18. hybrid drive main reduction driving gear; 19. hybrid drive driven gear; 20. Drive the second driven gear; 21, clutch inner hub; 22, clutch friction plate; 23, clutch steel plate; 24, clutch outer hub with retaining ring; 25, clutch piston; 26, clutch return spring; 27, clutch return spring baffle; 28, clutch outer hub support; 29, inner clutch inner hub; 30, inner clutch friction plate; 31, inner clutch steel plate; 32, inner clutch piston; 33, inner clutch return spring; 34, inner clutch return spring baffle; 35, clutch intermediate hub with inner and outer retaining rings; 36, clutch intermediate hub support; 37, outer clutch outer hub ;38, external clutch friction plate;39, external clutch steel plate;40, external clutch piston;41, external clutch piston support;42, external clutch return spring;43, external clutch return spring baffle;44, high-pressure oil pump;45, first clutch solenoid valve and high-pressure oil circuit;46, second clutch solenoid valve and high-pressure oil circuit;47, internal clutch solenoid valve and high-pressure oil circuit;48, external clutch solenoid valve and high-pressure oil circuit;49, low-pressure oil pump;50, oil cooler;51, cooling and lubricating oil circuit;52, generator stator cooling oil pipe;53, drive motor stator cooling oil pipe;5 4. Oil collecting tank; 55. High and low pressure connecting oil circuits; 511. Input flange and input shaft branch oil circuit; 512. Generator gear shaft and generator rotor shaft branch oil circuit; 513. Drive motor gear shaft and drive motor rotor shaft branch oil circuit; 514. Electric drive output shaft branch oil circuit; 515. Hybrid drive output shaft branch oil circuit; 516. External clutch cooling and lubrication branch oil circuit; 100. Generator; 200. Engine; 300. Drive motor; 400. First clutch; 500. Second clutch; 600. Dual clutch second clutch; 601. Inner clutch; 602. External clutch. DETAILED DESCRIPTION

[0042] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0043] Embodiment 1: A single-speed hybrid transmission in which the generator can participate in driving.

[0044] A hybrid power transmission with a generator participating in driving, comprising:

[0045] Power source: It is composed of a generator 100, a drive motor 300 and an engine 200 with a shock absorber 1.

[0046] The gear clutch transmission system is used to transmit power between the generator 100, the drive motor 300, the engine 200 and the differential 15. The clutch system consists of two clutches. The first clutch 400 is coaxially arranged with the engine, connecting the input flange 2 and the input shaft 3 for connecting and disconnecting the engine 200. The second clutch 500 of the single-speed scheme and the double-clutch second clutch 600 of the two-speed scheme are arranged on the hybrid drive output shaft 17 to determine whether the power of the generator and the engine can participate in the vehicle driving. The gear clutch transmission system includes a power generation module, a generator single / two-speed drive module, an engine single / two-speed drive module and a drive motor drive module.

[0047] The hydraulic system is used to control the closing and opening of the clutch in the clutch system, realize the connection and separation of the power of the engine 200, and determine whether the power of the engine 200 and the generator 100 is involved in the vehicle driving.

[0048] The cooling and lubrication system is used to cool the stator and rotor of the generator 100 and the drive motor 300 as well as to cool and lubricate the gear transmission system and the clutch system.

[0049] In the specific implementation of this embodiment, the power generation module in the gear clutch transmission system includes a power generation driven gear 7 and an input shaft 3, the power generation driven gear 7 is arranged on the generator gear shaft 6, the generator gear shaft is splined with the generator rotor shaft 8, the input shaft 3 is provided with a hybrid drive driving gear 4, the hybrid drive driving gear 4 is meshed with the power generation driven gear 7 on the generator gear shaft 6; the first clutch 400 is arranged between the input shaft 3 and the input flange 2, and the input flange 2 is splined with the shock absorber 1 on the engine 200. When the first clutch 400 is closed, the power of the engine 200 drives the generator 100 to generate electricity through the shock absorber 1, the input flange 2, the first clutch 400, the input shaft 3, the hybrid drive driving gear 4, the power generation driven gear 7, the generator gear shaft 6, and the generator rotor shaft 8, forming a power generation module.

[0050] In a specific implementation of the present embodiment, the generator single-speed drive system in the gear clutch transmission system includes a generator driven gear 7, a hybrid drive driving gear 4, a second clutch 500, a hybrid drive output shaft 17 and a differential 15, wherein the hybrid drive output shaft 17 is provided with a hybrid drive driven gear 19; the hybrid drive driven gear 19 is meshed with the hybrid drive driving gear 4 on the input shaft 3; the hybrid drive output shaft 17 is further provided with a second clutch 500; the second clutch 500 is arranged at the motor side end of the hybrid drive output shaft 17; the hybrid drive driven gear 19 and the hybrid drive output shaft 17 are connected through the second clutch 500; the hybrid drive output shaft 17 is further provided with a hybrid drive main reduction driving gear 18, and the differential 15 is provided with a main reduction driven gear 16; the main reduction driven gear 16 is meshed with the hybrid drive main reduction driving gear 18 on the hybrid drive output shaft 17. When the first clutch 400 is opened and the second clutch 500 is closed, the power of the generator drives the vehicle through the generator rotor shaft 8, the generator gear shaft 6, the generator driven gear 7, the hybrid drive driving gear 4, the hybrid drive driven gear 19, the second clutch 500, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15, forming a generator single-speed drive module.

[0051] In a specific implementation of this embodiment, the engine single-speed drive system in the gear clutch transmission system includes an input flange 2, a first clutch 400, an input shaft 3, a hybrid drive output shaft 17 and a differential 15. When the first clutch 400 and the second clutch 500 are both closed, the power of the engine drives the vehicle through the shock absorber 1, the input flange 2, the first clutch 400, the input shaft 3, the hybrid drive driving gear 4, the hybrid drive driven gear 19, the second clutch 500, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15, forming an engine single-speed drive module.

[0052] In the specific implementation of the present embodiment, the drive motor driving module in the gear clutch transmission system includes a drive motor gear shaft 10, an electric drive output shaft 12 and a differential 15; the drive motor gear shaft 10 is spline-connected with the drive motor rotor shaft 9, the drive motor gear shaft 10 is provided with an electric drive driving gear 11, the electric drive output shaft 12 is provided with an electric drive main reduction driving gear 14 and an electric drive driven gear 13, the electric drive driven gear 13 is meshed with the electric drive driving gear 11 on the drive motor gear shaft 10, and the electric drive main reduction driving gear 14 is meshed with the main reduction driven gear 16 on the differential 15. The power of the drive motor 300 rotates through the drive motor rotor shaft 9, the drive motor gear shaft 10, the electric drive driving gear 11, the electric drive driven gear 13, the electric drive output shaft 12, and the electric drive main reduction driving gear 14, and the main reduction driven gear 16 and the differential 15 drive the vehicle to travel, thereby forming a drive motor driving module.

[0053] In a specific implementation of this embodiment, the generator drive system and the drive motor drive module together constitute a dual-motor drive module.

[0054] In the specific implementation of this embodiment, the main reduction driven gear 16 on the differential 15 is meshed with the hybrid drive main reduction driving gear 18 and the electric drive main reduction driving gear 14 at the same time, and the driving forces from both places are simultaneously gathered to the differential 15 for vehicle driving.

[0055] In a specific implementation manner of this embodiment, the first clutch 400 is arranged between the input shaft 3 and the input flange 2, and is composed of a clutch inner hub 21, a clutch friction plate 22, a clutch steel plate 23, a clutch outer hub 24 with a retaining ring, a clutch piston 25, a clutch return spring 26 and a clutch return spring baffle 27. The clutch inner hub 21 is welded to the input flange 2 and is also connected to the clutch friction plate 22 by a sliding spline. The clutch outer hub 24 with a retaining ring is welded to the hybrid drive driving gear 4 and is also connected to the clutch steel plate 23 by a sliding spline. The clutch piston 25 is arranged in the space between the input shaft 3 and the hybrid drive driving gear 4, and is slidably connected to the input shaft 3 through its inner diameter and is slidably connected to the hybrid drive driving gear 4 through its outer diameter, and a first clutch hydraulic working chamber is formed between the three parts.

[0056] In the specific implementation of this embodiment, the second clutch 500 is arranged on the hybrid drive output shaft 17, which is composed of a clutch inner hub 21, a clutch friction plate 22, a clutch steel plate 23, a clutch outer hub 24 with a retaining ring, a clutch piston 25, a clutch return spring 26, a clutch return spring retaining plate 27 and a clutch outer hub support 28. The clutch inner hub 21 is welded to the hybrid drive driven gear 19 and is also splined to the clutch friction plate 22; the clutch outer hub 24 with a retaining ring is welded to the clutch outer hub support 28 and is splined to the clutch steel plate 23; the clutch outer hub support 28 is splined to the hybrid drive output shaft 17; the clutch piston 25 is installed in the space formed by the clutch outer hub support 28 and is slidably connected to the clutch outer hub support 28, and a second clutch hydraulic working chamber is formed between the clutch piston 25 and the clutch outer hub support 28. Except for the clutch outer hub support 28, other parts are common to the first clutch 400.

[0057] In a specific implementation of this embodiment, the hydraulic system includes a high-pressure oil pump 44 , a first clutch solenoid valve and a high-pressure oil circuit 45 for controlling the operation of the first clutch 400 , and a second clutch solenoid valve and a high-pressure oil circuit 46 for controlling the operation of the second clutch 500 . When the first clutch solenoid valve and the high-pressure oil circuit 45 are at high pressure, the high-pressure lubricating oil enters the first clutch hydraulic working chamber through the central oil hole at the left end of the input shaft 3, driving the clutch piston 25 to move in the piston space formed by the input shaft 3 and the hybrid drive driving gear 4, thereby closing the first clutch 400; when the first clutch solenoid valve and the high-pressure oil circuit 45 are at low pressure, the clutch return spring 26 returns the clutch piston 25 to open the first clutch 400; when the second clutch solenoid valve and the high-pressure oil circuit 46 are at high pressure, the high-pressure lubricating oil enters the second clutch hydraulic working chamber through the central hole at the left end of the hybrid drive output shaft 17, driving the clutch piston 25 to move in the piston space of the clutch outer hub support 28, thereby closing the second clutch 500; when the second clutch solenoid valve and the high-pressure oil circuit 46 are at low pressure, the clutch return spring 26 returns the clutch piston 25 to open the second clutch 500.

[0058] In the specific implementation of this embodiment, the cooling and lubricating system is composed of a low-pressure oil pump 49, an oil cooler 50, a cooling and lubricating oil circuit 51, and various branch oil circuits. The low-pressure oil pump 49 pumps out the lubricating oil at the bottom of the gearbox, and enters the oil cooler 50 fixed on the outside of the gearbox housing through the housing oil passage. The vehicle's water cooling facilities provide cooling water to perform heat exchange in the oil cooler 50 to cool the lubricating oil, and the cooled lubricating oil is circulated into the gearbox housing, and is transported to all operating and heat-generating parts in the gearbox through the cooling and lubricating oil circuit 51 and various branch oil circuits in the gearbox housing. The cooling and lubricating oil circuit 51 is arranged in the gearbox housing on the engine side.

[0059] In a specific implementation of this embodiment, the cooling and lubrication system also includes various branch oil circuits, each branch oil circuit includes a generator stator cooling oil pipe 52, a drive motor stator cooling oil pipe 53, an oil collecting tank 54 and a high and low pressure connecting oil circuit 55, and a branch oil circuit composed of 7 hollow shafts and shell oil holes, including an input flange and input shaft branch oil circuit 511, a generator gear shaft and generator rotor shaft branch oil circuit 512, a drive motor gear shaft and drive motor rotor shaft branch oil circuit 513, an electric drive output shaft branch oil circuit 514 and a hybrid drive output shaft branch oil circuit 515. The generator stator cooling oil pipe 52 guides the cooling lubricating oil to the upper part of the stator of the generator 100, and sprays it to the part of the stator of the generator 100 that needs to be cooled; the drive motor stator cooling oil pipe 53 guides the cooling lubricating oil to the upper part of the stator of the drive motor 300, and sprays it to the part of the stator of the drive motor 300 that needs to be cooled; the high-low pressure connecting oil circuit 55 includes a switch valve and a relief valve. When the clutch is not working, the two clutch solenoid valves and the high-pressure oil circuit that control the operation of the clutch are low-pressure, the switch valve of the high-low pressure connecting oil circuit 55 is opened, and the lubricating oil in the high-pressure oil circuit enters the low-pressure oil circuit as a supplement to the low-pressure oil circuit. When the generator 100 or the engine 200 needs to work, at least one of the first clutch solenoid valve and the high-pressure oil circuit 45 and the second clutch solenoid valve and the high-pressure oil circuit 46 needs high-pressure oil, the switch valve of the high-low pressure connecting oil circuit 55 is closed, and the excess high-pressure oil generated by the continuous operation of the high-pressure oil pump enters the low-pressure oil circuit through the relief valve of the high-low pressure connecting oil circuit 55. The generator gear shaft and generator rotor shaft branch oil circuit 512 delivers the cooling lubricating oil of the cooling and lubricating oil circuit 51 to the center hole of the generator rotor shaft 8, and while completing the lubrication of the bearings on the shaft, delivers it to the rotor parts of the generator 100 that need cooling through the oil holes on the generator rotor shaft 8. The drive motor gear shaft and drive motor rotor shaft branch oil circuit 513 deliver the cooling lubricating oil of the cooling and lubricating oil circuit 51 to the center hole of the drive motor rotor shaft 9, and while completing the lubrication of the bearings, delivers it to the rotor parts of the drive motor 300 that need cooling. The input flange and input shaft branch oil circuit 511 mixed drive output shaft branch oil circuit 515 delivers the cooling lubricating oil of the cooling and lubricating oil circuit 51 to the two clutches and the bearing parts that need cooling and lubrication. The electric drive output shaft branch oil circuit 514 is only used for the lubrication of the right end bearing of the electric drive output shaft 12. The oil collecting tank 54 collects the lubricating oil splashed by the gears in the gearbox and gathers it to the upper center of the generator stator for supplementary cooling of the stator of the generator 100. The oil collecting tank 54 is independent of the cooling and lubricating oil circuits, thereby increasing the cooling effect of the generator stator without consuming energy.

[0060] The working mode of the first embodiment is as follows:

[0061] Parking power generation: When the vehicle is stopped, the first clutch 400 is closed and the second clutch 500 is opened. After the engine 200 is started using the power of the generator 100, the power of the engine 200 drives the generator 100 to generate electricity through the shock absorber 1, the input flange 2, the first clutch 400, the input shaft 3, the hybrid drive driving gear 4, the power generation driven gear 7, the generator gear shaft 6, and the generator rotor shaft 8 to charge the vehicle battery pack.

[0062] Single-motor pure electric drive: The slow start of the vehicle and the low-speed pure electric driving conditions with low requirements on the vehicle's dynamic performance are completed by the single-motor drive of the drive motor 300. The first clutch 400 and the second clutch 500 are both open, and the power of the drive motor 300 is driven by the drive motor gear shaft 10 splined with the drive motor rotor shaft 9, the electric drive driving gear 11, the electric drive driven gear 13, the electric drive output shaft 12, the electric drive main reduction driving gear 14, the main reduction driven gear 16, and the differential 15 to drive the vehicle. The power used by the drive motor 300 comes from the vehicle battery pack.

[0063] Dual-motor pure electric drive: The vehicle's quick start, climbing, and pure electric driving conditions with high requirements for vehicle power are completed by dual-motor drive with the drive motor 300 as the main drive and the generator 100 single-gear drive as the auxiliary drive. When the first clutch 400 is open and the second clutch 500 is closed, the drive motor 300 performs the pure electric drive function as the main drive motor, while the power of the generator 100 drives the vehicle through the generator rotor shaft 8, the generator gear shaft 6, the generator driven gear 7, the hybrid drive driving gear 4, the hybrid drive driven gear 19, the second clutch 500, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15. The dual-motor pure electric drive can provide a strong driving force for the vehicle, and the electricity used by the two motors comes from the vehicle battery pack.

[0064] Extended-range drive: When the vehicle is in driving state, with the first clutch 400 closed and the second clutch 500 open, the power of the engine 200 drives the generator 100 to generate electricity through the shock absorber 1, the input flange 2, the motor input shaft 3, the hybrid drive driving gear 4, the generator driven gear 7, the generator gear shaft 6, and the generator rotor shaft 8, while charging the vehicle battery pack or directly providing driving power to the drive motor 300. At the same time, the drive motor 300 performs the aforementioned pure electric drive function. Unlike the aforementioned pure electric drive, during extended-range drive, part of the power required for the drive motor 300 comes from the vehicle battery pack and part comes from the generator 100.

[0065] Engine start-stop: The start and stop of the engine 200 in the parking power generation or vehicle driving state is driven and controlled by the generator 100 when the first clutch 400 is closed and the second clutch 500 is open.

[0066] Reversing: The vehicle is reversed by the drive motor 300 under pure electric drive or extended-range drive conditions.

[0067] Braking energy recovery: Braking energy recovery during vehicle driving is implemented by converting the driving motor 300 into a power generation state. In the dual-motor pure electric drive mode, the generator can also participate in auxiliary braking energy recovery.

[0068] Engine single gear drive: When the first clutch 400 and the second clutch 500 are both closed, the power of the engine 200 drives the vehicle through the shock absorber 1, the input flange 2, the first clutch 400, the input shaft 3, the hybrid drive driving gear 4, the hybrid drive driven gear 19, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15. Under this working condition, the generator 100 and the drive motor 300 are both in an idling state.

[0069] Engine single-gear drive, dual-motor auxiliary drive: Under the engine single-gear drive condition, the generator 100 is placed in the power generation state, the engine 200 is placed in a high fuel efficiency range for stable operation, and the vehicle acceleration and deceleration and braking energy recovery deceleration are controlled by switching the positive and negative torque of the drive motor 300 or adjusting the drive torque.

[0070] Embodiment 2: A two-speed hybrid transmission in which the generator can participate in driving.

[0071] Based on the modular design scheme, hybrid power transmission products with different functions can be derived by adjusting the design of the engine drive system module: on the basis of the single-speed drive hybrid power transmission in which the generator 100 can participate in the driving of the embodiment 1, the position of the generator 100 is appropriately moved to the left, a hybrid drive second driving gear 5 is added to the input shaft 3 near the motor side, and a hybrid drive second driven gear 20 meshing with the hybrid drive second driving gear 5 is added to the hybrid drive driven gear 19 on the hybrid drive output shaft 17, and at the same time, the second clutch 500 of the single clutch is adjusted to a double-clutch second clutch 600 composed of two sets of wet multi-piece clutches, an inner clutch 601 and an outer clutch 602, that is, a hybrid power transmission in which both the generator 100 and the engine 200 can be driven in two gears; when the inner clutch 601 is closed and the outer clutch 602 is opened, the generator 10 The power of the generator 100 and the engine 200 is transmitted to the hybrid drive output shaft 17 through the hybrid drive driving gear 4, the hybrid drive driven gear 19, and the inner clutch 601; when the inner clutch 601 is opened and the outer clutch 602 is closed, the power of the generator 100 and the engine 200 is transmitted to the hybrid drive output shaft 17 through the hybrid drive second driving gear 5, the hybrid drive second driven gear 20, and the outer clutch 602, and the vehicle is driven to travel through the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15, thereby realizing the two-speed driving function of the generator and the engine.

[0072] like Figure 2 and Figure 3As shown, the inner clutch 601 is composed of an inner clutch inner hub 29, an inner clutch friction plate 30, an inner clutch steel plate 31, an inner clutch piston 32, an inner clutch return spring 33, an inner clutch return spring baffle 34, a clutch intermediate hub 35 with inner and outer retaining rings, and a clutch intermediate hub support 36; the outer clutch 602 is composed of a clutch intermediate hub 35 with inner and outer retaining rings, a clutch intermediate hub support 36, an outer clutch outer hub 37, an outer clutch friction plate 38, an outer clutch steel plate 39, an outer clutch piston 40, an outer clutch piston support 41, an outer clutch return spring 42, and an outer clutch return spring baffle 43; the inner clutch inner hub 29 is welded to the hybrid drive driven gear 19 and is connected to the inner clutch friction plate 30 by sliding splines; the clutch with inner and outer retaining rings The clutch intermediate hub 35 is welded to the clutch intermediate hub support 36 and is also slidingly splined to the inner clutch steel plate 31 and the outer clutch steel plate 39; the outer clutch outer hub 37 is welded to the second driven gear 20 of the hybrid drive and is also slidingly splined to the outer clutch friction plate 38; the clutch intermediate hub support 36 is splined to the hybrid drive output shaft 17; the inner clutch piston 32 is installed in the space formed by the clutch intermediate hub support 36 and is slidingly connected to the clutch intermediate hub support 36 to form an inner clutch hydraulic working chamber; the outer clutch piston 40 is installed in the space formed by the outer clutch piston support 41 and is slidingly connected to the outer clutch piston support 41 to form an outer clutch hydraulic working chamber; the outer clutch piston support 41 is splined to the hybrid drive output shaft 17.

[0073] In addition to the high-pressure oil pump 44, the first clutch solenoid valve and the high-pressure oil circuit 45, the hydraulic system of the two-speed drive scheme of the engine and the generator also has an inner clutch solenoid valve and a high-pressure oil circuit 47 for controlling the operation of the inner clutch 601 of the second clutch 600 of the dual-clutch, and an outer clutch solenoid valve and a high-pressure oil circuit 48 for controlling the operation of the outer clutch 602 of the second clutch 600 of the dual-clutch. When the inner clutch solenoid valve and the high-pressure oil circuit 47 are under high pressure, the high-pressure oil enters the hydraulic working chamber of the inner clutch through the center hole at the left end of the hybrid drive output shaft 17, and the hydraulic pressure pushes the inner clutch piston 32 to move in the piston space of the clutch intermediate hub support 36. , realizing the closing of the inner clutch 601; when the inner clutch solenoid valve and the high-pressure oil circuit 47 are at low pressure, the inner clutch return spring 33 returns the inner clutch piston 32 to realize the opening of the inner clutch 601; when the outer clutch solenoid valve and the high-pressure oil circuit 48 are at high pressure, the hydraulic oil enters the eccentric hole closed at one end through the outer diameter of the hybrid drive output shaft 17 and then enters the hydraulic working chamber of the outer clutch, and the hydraulic pressure pushes the outer clutch piston 40 to move to realize the closing of the outer clutch 602; when the outer clutch solenoid valve and the high-pressure oil circuit 48 are at low pressure, the outer clutch return spring 42 returns the outer clutch piston 40 to realize the opening of the outer clutch 602.

[0074] In addition to all the cooling and lubrication systems of the single-speed scheme, the cooling and lubrication system of the two-speed drive scheme of the engine and generator is also provided with an external clutch cooling and lubrication branch oil circuit 516 for cooling and lubricating the external clutch of the dual-clutch second clutch 600.

[0075] Compared with the hybrid transmission of the first embodiment, the vehicle is suitable for executing the engine 200 drive when the vehicle speed is greater than 80 km / h. The second embodiment adds a hybrid drive second driving gear 5 and a hybrid drive second driven gear 20, and the speed is relatively large, which can extend the vehicle speed at which the engine 200 is efficiently driven down to about 50 km / h, and better exert the fuel economy of the engine 200.

[0076] The working mode of the second embodiment is as follows:

[0077] The second embodiment has the working modes of parking power generation, pure electric drive of the drive motor, extended-range drive, engine start-stop, reverse, and brake energy recovery of the first embodiment. The parts involved in each of the above working modes and their working states are the same as those of the first embodiment. In addition, the second embodiment also has the following working modes:

[0078] Dual-motor two-speed drive: For vehicle quick start, hill climbing and pure electric driving conditions with high requirements on vehicle dynamics, the first clutch 400 is opened and the dual-motor drive is completed with the drive motor 300 as the main drive and the generator 100 as the auxiliary drive in two-speed drive. When the vehicle starts or at a relatively low speed, the inner clutch 601 of the dual-clutch second clutch 600 is opened, and the outer clutch 602 is closed. The power of the generator 100 is driven through the generator rotor shaft 8, the generator gear shaft 6, the generator driven gear 7, the hybrid drive driving gear 4, the input shaft 3, the hybrid drive second driving gear 5, the hybrid drive second driven gear 20, the outer clutch 602, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15 to drive the vehicle to travel; at a relatively high speed, the inner clutch 601 of the dual-clutch second clutch 600 is closed, and the outer clutch 602 is opened. The power of the generator 100 is driven through the generator rotor shaft 8, the generator gear shaft 6, the generator driven gear 7, the hybrid drive driving gear 4, the hybrid drive driven gear 19, the inner clutch 601, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15 to drive the vehicle to travel; the dual-motor two-speed drive can provide a strong driving force for the vehicle, and the electricity used by the two motors comes from the vehicle battery pack.

[0079] The engine two-speed drive: the first clutch 400 is closed, and the power transmission path of the engine 200 after passing through the shock absorber 1, the input flange 2, the first clutch 400, and the input shaft 3 is consistent with the generator two-speed drive. Under the vehicle medium-speed driving condition, the inner clutch 601 of the double-clutch second clutch 600 is opened, and the outer clutch 602 is closed. The power of the engine 200 passes through the hybrid drive second driving gear 5, the hybrid drive second driven gear 20, the outer clutch 602, the hybrid drive output shaft 17, and the hybrid drive The vehicle is driven by the main reduction driving gear 18, the main reduction driven gear 16, and the differential 15; at a higher vehicle speed, the inner clutch 601 is closed, the outer clutch 602 is opened, and the power of the engine 200 is driven by the hybrid drive driving gear 4, the hybrid drive driven gear 19, the inner clutch 601, the hybrid drive output shaft 17, the hybrid drive main reduction driving gear 18, the main reduction driven gear 16, and the differential 15 to drive the vehicle; in the two-speed engine driving condition, the generator 100 and the drive motor 300 can be in an idling state.

[0080] Engine two-speed drive, dual-motor auxiliary drive: Under the engine two-speed drive condition, the generator 100 is placed in a power generation state, the engine 200 is placed in a high fuel efficiency range for stable operation, and the vehicle acceleration and deceleration and braking energy recovery deceleration are controlled by switching the positive and negative torque of the drive motor 300 or adjusting the drive torque.

[0081] Of course, in actual products, whether it is implementation one or implementation two, the single clutch and dual clutch of the wet multi-plate clutch can be replaced by an electromagnetic clutch. The hybrid transmission of the wet multi-plate clutch solution needs to be equipped with a high-pressure oil pump and a hydraulic system to assist the clutch, while the hybrid transmission of the electromagnetic clutch solution does not need a high-pressure oil pump and a hydraulic system. Therefore, the hybrid transmission of the electromagnetic clutch solution has a lower manufacturing cost. Both solutions need to be provided with a cooling and lubrication system to provide cooling and lubrication for the motor and the gear clutch transmission system.

[0082] In addition, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, including but not limited to: changing the multi-plate wet clutch to an electromagnetic clutch, changing the electronically controlled oil pump to a mechanical oil pump, etc. With the above-mentioned ideal embodiments of the present invention as inspiration, through the above-mentioned description, relevant staff can make various changes and modifications without departing from the scope of the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hybrid power transmission with generator participation in driving, characterized in that: include: A power source, comprising a generator (100), a drive motor (300), and an engine (200) with a shock absorber (1); A gear clutch transmission system is used to transmit power between a generator (100), a drive motor (300), an engine (200) and a differential (15). The clutch system comprises two clutches. A first clutch (400) is coaxially arranged with the engine and connected to an input flange (2) and an input shaft (3) for connecting and disconnecting the engine (200) to achieve a dual-clutch two-speed drive. A second clutch (600) is arranged on a hybrid drive output shaft (17) and is used to determine whether the power of the generator and the engine can participate in driving the vehicle. The gear clutch transmission system comprises a power generation module, a generator two-speed drive module, an engine two-speed drive module and a drive motor drive module. A hydraulic system for controlling the closing and opening of a clutch in a clutch system, realizing the connection and separation of the power of the engine (200), and determining whether the power of the engine (200) and the generator (100) participates in driving the vehicle; A cooling and lubrication system, used for cooling the stator and rotor of the generator (100) and the drive motor (300), and for cooling and lubricating the gear transmission system and the clutch system; A hybrid drive second driving gear (5) is arranged on the input shaft (3) near the motor side, a hybrid drive driven gear (19) on the hybrid drive output shaft (17) is provided with a hybrid drive second driven gear (20) meshing with the hybrid drive second driving gear (5), and a dual-clutch second clutch (600) is also arranged on the motor side end of the hybrid drive output shaft (17), so as to form a hybrid power transmission in which both the generator and the engine can be driven in two gears, and the dual-clutch second clutch (600) is composed of two sets of wet multi-plate clutches, namely an inner clutch (601) and an outer clutch (602). When the inner clutch (601) is closed and the outer clutch (602) is opened, the generator (1 The power of the generator (100) and the engine (200) is transmitted to the hybrid drive output shaft (17) through the hybrid drive driving gear (4), the hybrid drive driven gear (19), and the inner clutch (601); when the inner clutch (601) is opened and the outer clutch (602) is closed, the power of the generator (100) and the engine (200) is transmitted to the hybrid drive output shaft (17) through the hybrid drive second driving gear (5), the hybrid drive second driven gear (20), and the outer clutch (602), and the vehicle is driven to travel through the hybrid drive main reduction driving gear (18), the main reduction driven gear (16), and the differential (15), thereby realizing the two-speed driving function of the generator and the engine.

2. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The power generation module in the gear clutch transmission system comprises a power generation driven gear (7) and an input shaft (3), wherein the power generation driven gear (7) is arranged on a generator gear shaft (6), wherein the generator gear shaft (6) is spline-connected to a generator rotor shaft (8), and a hybrid drive driving gear (4) is arranged on the input shaft (3), wherein the hybrid drive driving gear (4) meshes with the power generation driven gear (7) on the generator gear shaft (6); the first clutch (400) is arranged between the input shaft (3) and an input flange (2), wherein the input flange (2) is spline-connected to a shock absorber (1) on an engine (200); When the first clutch (400) is closed, the power of the engine (200) drives the generator (100) to generate electricity through the shock absorber (1), the input flange (2), the first clutch (400), the input shaft (3), the hybrid drive driving gear (4), the power generation driven gear (7), the generator gear shaft (6), and the generator rotor shaft (8), thereby forming a power generation module.

3. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The drive motor drive module in the gear clutch transmission system comprises a drive motor gear shaft (10), an electric drive output shaft (12) and a differential (15); the drive motor gear shaft (10) is spline-connected to the drive motor rotor shaft (9); an electric drive driving gear (11) is arranged on the drive motor gear shaft (10); an electric drive main reduction driving gear (14) and an electric drive driven gear (13) are arranged on the electric drive output shaft (12); the electric drive driven gear (13) is connected to the drive motor gear shaft (10) The electric drive driving gear (11) on the vehicle body is meshed, the electric drive main reduction driving gear (14) is meshed with the main reduction driven gear (16) on the differential (15), the power of the drive motor (300) is rotated through the drive motor rotor shaft (9), the drive motor gear shaft (10), the electric drive driving gear (11), the electric drive driven gear (13), the electric drive output shaft (12), and the electric drive main reduction driving gear (14), and the main reduction driven gear (16) and the differential (15) drive the vehicle to travel, thereby forming a drive motor drive module.

4. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The generator two-speed drive module and the drive motor drive module together constitute a dual-motor drive module.

5. The hybrid power transmission with generator participation drive according to claim 3, characterized in that: The main reduction driven gear (16) on the differential (15) is meshed with the hybrid drive main reduction driving gear (18) and the electric drive main reduction driving gear (14) at the same time, and the driving forces from the two places are simultaneously gathered to the differential (15) for vehicle driving.

6. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The first clutch (400) is arranged between the input shaft (3) and the input flange (2), and is composed of a clutch inner hub (21), a clutch friction plate (22), a clutch steel plate (23), a clutch outer hub (24) with a retaining ring, a clutch piston (25), a clutch return spring (26) and a clutch return spring retaining plate (27). The clutch inner hub (21) is welded to the input flange (2) and is also connected to the clutch friction plate (22) by a sliding spline. The clutch outer hub (24) with a retaining ring is welded to the hybrid drive driving gear (4) and is also connected to the clutch steel plate (23) by a sliding spline. The clutch piston (25) is arranged in the space between the input shaft (3) and the hybrid drive driving gear (4), and is slidably connected to the input shaft (3) through its inner diameter and is slidably connected to the hybrid drive driving gear (4) through its outer diameter, thereby forming a first clutch hydraulic working chamber.

7. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The second clutch (500) is arranged on the hybrid drive output shaft (17), and is composed of a clutch inner hub (21), a clutch friction plate (22), a clutch steel plate (23), a clutch outer hub (24) with a retaining ring, a clutch piston (25), a clutch return spring (26), a clutch return spring retaining plate (27) and a clutch outer hub support (28). The clutch inner hub (21) is welded to the hybrid drive driven gear (19) and is also connected to the clutch friction plate (22) by a sliding spline. The clutch outer hub (24) with a retaining ring is welded to the clutch outer hub support (28) and is also connected to the clutch steel plate (23) by a sliding spline. The clutch outer hub support (28) is splined to the hybrid drive output shaft (17). The clutch piston (25) is installed in a space formed by the clutch outer hub support (28) and is connected to the clutch outer hub support (28) by a sliding spline. A second clutch hydraulic working chamber is formed between the clutch piston (25) and the clutch outer hub support (28).

8. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The inner clutch (601) is composed of an inner clutch inner hub (29), an inner clutch friction plate (30), an inner clutch steel plate (31), an inner clutch piston (32), an inner clutch return spring (33), an inner clutch return spring baffle (34), a clutch intermediate hub (35) with inner and outer retaining rings, and a clutch intermediate hub support (36); the outer clutch (602) is composed of a clutch intermediate hub (35) with inner and outer retaining rings, a clutch intermediate hub support (36), an outer clutch outer hub (37), an outer clutch friction plate (38), an outer clutch steel plate (39), an outer clutch piston (40), an outer clutch piston support (41), an outer clutch return spring (42), and an outer clutch return spring baffle (43); the inner clutch inner hub (29) is welded to the hybrid drive driven gear (19) and is slidingly splined to the inner clutch friction plate (30 ... The clutch intermediate hub (35) is welded to the clutch intermediate hub support (36) and is also connected to the inner clutch steel plate (31) and the outer clutch steel plate (39) by sliding spline. The outer clutch outer hub (37) is welded to the second driven gear (20) of the hybrid drive and is also connected to the outer clutch friction plate (38) by sliding spline. The clutch intermediate hub support (36) is connected to the hybrid drive output shaft (17) by spline. The inner clutch piston (32) is installed in the space formed by the clutch intermediate hub support (36) and is connected to the clutch intermediate hub support (36) by sliding to form an inner clutch hydraulic working chamber. The outer clutch piston (40) is installed in the space formed by the outer clutch piston support (41) and is connected to the outer clutch piston support (41) by sliding to form an outer clutch hydraulic working chamber. The outer clutch piston support (41) is connected to the hybrid drive output shaft (17) by spline.

9. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The hydraulic system comprises a high-pressure oil pump (44), a first clutch solenoid valve and a high-pressure oil circuit (45) for controlling the operation of the first clutch (400), and when the engine and the generator are driven in two gears, an inner clutch solenoid valve and a high-pressure oil circuit (47) for controlling the operation of the inner clutch (601) of the second clutch (600) of the dual-clutch system, and an outer clutch solenoid valve and a high-pressure oil circuit (48) for controlling the operation of the outer clutch (602) of the second clutch (600) of the dual-clutch system; when the first clutch solenoid valve and the high-pressure oil circuit (45) are at high pressure, the high-pressure lubricating oil enters the hydraulic working chamber of the first clutch through the central oil hole at the left end of the input shaft (3), drives the clutch piston (25) to move in the piston space formed by the input shaft (3) and the hybrid drive driving gear (4), and realizes the closing of the first clutch (400); when the first clutch solenoid valve and the high-pressure oil circuit (45) are at low pressure, the clutch return spring (26) returns the clutch piston (25), and realizes the opening of the first clutch (400); When the inner clutch solenoid valve and the high-pressure oil circuit (47) of the two-speed scheme are at high pressure, the high-pressure oil enters the inner clutch hydraulic working chamber through the left end center hole of the hybrid drive output shaft (17), and the hydraulic pressure pushes the inner clutch piston (32) to move in the piston space of the clutch intermediate hub support (36), thereby closing the inner clutch (601); when the inner clutch solenoid valve and the high-pressure oil circuit (47) are at low pressure, the inner clutch return spring (33) returns the inner clutch piston (32) to open the inner clutch (601); when the outer clutch solenoid valve and the high-pressure oil circuit (48) are at high pressure, the hydraulic oil enters the eccentric hole closed at one end through the outer diameter of the hybrid drive output shaft (17) and then enters the outer clutch hydraulic working chamber, and the hydraulic pressure pushes the outer clutch piston (40) to move to close the outer clutch (602); when the outer clutch solenoid valve and the high-pressure oil circuit (48) are at low pressure, the outer clutch return spring (42) returns the outer clutch piston (40) to open the outer clutch (602).

10. The hybrid power transmission with generator participation drive according to claim 1, characterized in that: The cooling and lubricating system is composed of a low-pressure oil pump (49), an oil cooler (50), a cooling and lubricating oil circuit (51), and various branch oil circuits. The low-pressure oil pump (49) pumps the lubricating oil at the bottom of the gearbox and enters the oil cooler (50) fixed to the outside of the gearbox housing through the housing oil passage. The vehicle's water cooling facilities provide cooling water to perform heat exchange in the oil cooler (50) to cool the lubricating oil. The cooled lubricating oil is circulated into the gearbox housing and transported to all operating and heat-generating parts in the gearbox through the cooling and lubricating oil circuit (51) and various branch oil circuits in the gearbox housing. The cooling and lubricating oil circuit (51) is arranged in the gearbox housing on the engine side. The cooling and lubricating system further comprises branch oil circuits, each branch oil circuit comprising a generator stator cooling oil pipe (52), a drive motor stator cooling oil pipe (53), an oil collecting tank (54) and a high-low pressure connecting oil circuit (55), and a branch oil circuit formed by seven hollow shafts and housing oil holes, including an input flange and input shaft branch oil circuit (511), a generator gear shaft and generator rotor shaft branch oil circuit (512), a drive motor gear shaft and drive motor rotor shaft branch oil circuit (513), an electric drive output shaft branch oil circuit (514), a hybrid drive output shaft branch oil circuit (515), and an external clutch cooling and lubrication branch oil circuit (516) provided on the transmission housing for providing cooling and lubrication to an external clutch (602) of a dual clutch second clutch (600); The generator stator cooling oil pipe (52) guides the cooling lubricating oil to the upper part of the stator of the generator (100) and sprays it to the part of the stator of the generator (100) that needs to be cooled; the drive motor stator cooling oil pipe (53) guides the cooling lubricating oil to the upper part of the stator of the drive motor (300) and sprays it to the part of the stator of the drive motor (300) that needs to be cooled; the oil collecting tank (54) collects the lubricating oil splashed by the operation of the gears in the gearbox and gathers it to the center of the upper part of the generator stator for supplementary cooling of the stator of the generator (100); the high-low pressure connecting oil circuit (55) includes a switch valve and a relief valve. When the clutch is not working, the two clutch solenoid valves that control the operation of the clutch and the high-pressure oil circuit are low-pressure, the switch valve of the high-low pressure connecting oil circuit (55) is opened, and the lubricating oil in the high-pressure oil circuit enters the low-pressure oil circuit to supplement the low-pressure oil circuit; The generator gear shaft and the generator rotor shaft branch oil circuit (512) transport the cooling lubricating oil of the cooling and lubricating oil circuit (51) to the center hole of the generator rotor shaft (8), and while completing the lubrication of the bearings on the shaft, transport the cooling lubricating oil to the rotor portion of the generator (100) that needs to be cooled through the oil holes on the generator rotor shaft (8); the drive motor gear shaft and the drive motor rotor shaft branch oil circuit (513) transport the cooling lubricating oil of the cooling and lubricating oil circuit (51) to the center hole of the drive motor rotor shaft (9), and while completing the lubrication of the bearings, transport the cooling lubricating oil to the rotor portion of the drive motor (300) that needs to be cooled; The input flange and input shaft branch oil circuit (511) hybrid drive output shaft branch oil circuit (515) transports the cooling lubricating oil of the cooling and lubricating oil circuit (51) to the two clutches and the bearing parts that need cooling and lubrication, and the electric drive output shaft branch oil circuit (514) is only used for lubricating the right end bearing of the electric drive output shaft (12); when the engine and the generator are driven in two gears, the external clutch cooling and lubricating oil circuit (516) transports the cooling lubricating oil of the cooling and lubricating oil circuit (51) to the rear end of the engine drive output shaft (17) through the housing oil circuit, and then transports it to the external clutch (602) parts that need cooling and lubrication through the eccentric hole on the shaft.

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