CN112984001A

CN112984001A - Wet-type three-clutch

Info

Publication number: CN112984001A
Application number: CN201911310889.2A
Authority: CN
Inventors: 刘维; 张新桂; 王泽伦; 刘波; 余子林; 凌晓明
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-06-18
Anticipated expiration: 2039-12-18
Also published as: CN112984001B

Abstract

The invention relates to the technical field of clutches of hybrid electric vehicles, and provides a wet three-clutch, which comprises: the clutch comprises a motor, an odd clutch, an even clutch and an engine clutch, and further comprises a first shaft hub fixed on the motor shell and a second shaft hub fixed on the transmission shell, wherein the first shaft hub is fixedly connected with a first outer hub on the odd clutch and a third outer hub on the engine clutch respectively, and the second shaft hub is fixedly connected with a second outer hub on the even clutch. The wet three-clutch provided by the invention integrates the engine clutch, the odd clutch and the even clutch between the motor and the transmission, and the three clutches adopt the rotary piston type clutches, so that the wet three-clutch can be suitable for being used in low-pressure and high-pressure oil duct systems, has the advantages of wider applicability, higher integration level, compact overall layout, high space utilization rate and better volume, is suitable for being arranged and used in various hybrid electric vehicles, and has better economic benefit.

Description

Wet-type three-clutch

Technical Field

The invention relates to the technical field of clutches of hybrid electric vehicles, in particular to a wet three-clutch.

Background

With the continuous development of the automobile industry and the continuous popularization of new energy automobiles in various countries, the hybrid electric vehicle becomes a key research and development object of various automobile enterprises due to the technical advantages and the cost advantages of the hybrid electric vehicle. A hybrid car refers to a vehicle that runs by using two or more types of power sources. Generally, an engine and an electric motor are used as power sources of a hybrid vehicle. The clutch is arranged between the power source and the gearbox and can be used for switching different power sources to be connected with the gearbox, so that the free switching process of three different modes, namely pure electric drive, engine drive and hybrid drive, in the hybrid electric vehicle is realized. In the conventional three-clutch structure of the hybrid vehicle, a wet double clutch having an inner and outer nested structure on the input side of a transmission and a wet single clutch on the input side of an engine are often used, and in the three-clutch structure, the wet double clutch connected to the input side of the transmission is a high-pressure actuator of a release bearing type, and the wet single clutch connected to the input side of the engine is a piston type high-pressure actuator. The three-clutch structure has the advantages of low integration level, large size and difficult arrangement of the whole vehicle, and the two clutches have different design ideas and poor uniformity and can only be used in the high-pressure system environment.

Disclosure of Invention

The invention aims to solve the defects that the existing three-clutch structure is formed by combining two different design ideas, is only used in a high-pressure system, has low integration level and larger size and is difficult to arrange the whole vehicle, and provides a wet three-clutch.

The technical scheme adopted by the invention for solving the technical problems is as follows: a wet triple clutch comprising: the motor comprises a motor shell, a stator arranged in the motor shell and a rotor surrounding the stator to generate rotary power; an odd clutch including a first outer hub drivingly connected to the rotor and a first inner hub assembly engagable with the first outer hub, the first inner hub assembly drivingly connected to the transmission inner input shaft for transferring rotational power from the first outer hub to the transmission inner input shaft; an even clutch including a second outer hub drivingly connected to the first outer hub and a second inner hub assembly engagable with the second outer hub, the second inner hub assembly drivingly connected to the transmission outer input shaft for transferring rotational power from the second outer hub to the transmission outer input shaft; the engine clutch comprises a third outer hub in transmission connection with the rotor and a third inner hub assembly which is arranged in the third outer hub and can be combined with the third outer hub, and the third inner hub assembly is in transmission connection with a flywheel of an engine and transmits the rotary power of the engine to the third outer hub; still including being fixed in first hub on the motor casing and the second hub that is fixed in on the derailleur casing, first hub respectively with on the odd number clutch first outer hub and on the engine clutch third outer hub fixed connection, the second hub with on the even number clutch second outer hub fixed connection.

Furthermore, a first oil duct for supplying oil to the odd-numbered clutch and the engine clutch is arranged on the motor shell, a second oil duct communicated with the first oil duct is arranged in the first shaft hub, and the first oil duct comprises a first control oil duct for supplying pressure control oil to the odd-numbered clutch and the engine clutch and a first lubricating oil duct for supplying cooling lubricating oil to the odd-numbered clutch and the engine clutch.

Furthermore, a first inner hub assembly of the odd clutch comprises a first connecting piece in transmission connection with the input shaft in the transmission, a first inner hub fixedly connected with the first connecting piece, a first friction plate set arranged between the first inner hub and the first outer hub, and a first piston assembly arranged between the first friction plate set and the first outer hub and capable of moving relatively, and when the first piston assembly abuts against the first friction plate set, the first inner hub and the first outer hub are combined to form transmission connection.

Specifically, the first piston assembly comprises a first piston arranged between the first outer hub and the first inner hub and a first balance piston fixed on the outer side of the third outer hub, a first balance oil chamber is formed between the first piston and the first balance piston, a first pressure oil chamber is formed between the first piston and the first outer hub, and a first return spring for returning the first piston is arranged in the first balance oil chamber.

Specifically, the second oil passage on the first hub comprises a second control oil passage for supplying oil to the first pressure oil chamber and a second lubricating oil passage for supplying oil to the first balance oil chamber, the second control oil passage is communicated with the first control oil passage, and the second lubricating oil passage is communicated with the first lubricating oil passage.

Further, a third inner hub assembly of the engine clutch comprises a third connecting piece fixed on the motor housing and in transmission connection with a flywheel of the engine, a third inner hub fixedly connected with the third connecting piece, a third friction plate set arranged between the third inner hub and the third outer hub, and a third piston assembly arranged between the third friction plate set and the third outer hub and capable of moving relatively, and when the third piston assembly abuts against the third friction plate set, the third inner hub and the third outer hub are combined to form transmission connection.

Specifically, the third piston assembly includes a third piston disposed between the third outer hub and the third inner hub, and a third balanced piston fixed to the first hub, a third balanced oil chamber is formed between the third piston and the third balanced piston, a third pressure oil chamber is formed between the third piston and the third outer hub, and a third return spring for returning the third piston is disposed in the third balanced oil chamber.

Specifically, the second oil passage on the first hub comprises a third control oil passage for supplying oil to the third pressure oil chamber and a third lubricating oil passage for supplying oil to the third balanced oil chamber, the third control oil passage is communicated with the first control oil passage, and the third lubricating oil passage is communicated with the first lubricating oil passage.

Furthermore, a fourth oil passage for supplying oil to the even-numbered clutch is arranged on the transmission shell, and a fifth oil passage communicated with the fourth oil passage is arranged in the second hub.

Specifically, the second inner hub assembly of the even clutch comprises a second connecting piece in transmission connection with the transmission outer input shaft, a second inner hub fixedly connected with the second connecting piece, a second friction plate set arranged between the second inner hub and the second outer hub, and a second piston assembly arranged between the second friction plate set and the second outer hub and capable of moving relatively, and when the second piston assembly abuts against the second friction plate set, the second inner hub and the second outer hub are combined to form transmission connection.

Specifically, the second piston assembly includes a second piston disposed between the second outer hub and the second inner hub, and a second balance piston disposed between the second inner hub and the second piston, a second balance oil chamber is formed between the second piston and the second balance piston, a second pressure oil chamber is formed between the second piston and the second outer hub, and a second return spring for returning the second piston is disposed in the second balance oil chamber.

Specifically, the fourth oil duct includes a fourth control oil duct for supplying pressure oil to an even-numbered clutch and a fourth lubricating oil duct for supplying cooling lubricating oil to the even-numbered clutch, the fifth oil duct on the second hub includes a fifth control oil duct for supplying oil to the second pressure oil chamber and a fifth lubricating oil duct for supplying oil to the second balance oil chamber, the fifth control oil duct is communicated with the fourth control oil duct, and the fifth lubricating oil duct is communicated with the fourth lubricating oil duct.

The wet three-clutch provided by the invention has the beneficial effects that: the engine clutch, the odd-numbered clutch and the even-numbered clutch are integrated between the motor and the transmission to form the wet three-clutch, the three clutches are all rotary piston type clutches, the working principle is the same, a pure electric mode can be formed through combination and separation of the three clutches, three different working conditions of an engine mode and a mixed mode can be switched freely, the wet three-clutch can be suitable for being used in a low-pressure oil duct system and a high-pressure oil duct system, the applicability is wider, the integration level is higher, the overall layout is compact, the space utilization rate is high, the size is better, the wet three-clutch is suitable for being arranged and used in various hybrid electric vehicles, and the wet three-clutch has better economic benefits.

Drawings

FIGS. 1-5 are cross-sectional views of a wet triple clutch according to the present invention;

FIG. 6 is a cross-sectional view of a first hub in a wet triple clutch provided by the present invention;

FIG. 7 is a cross-sectional view of a second hub in a wet triple clutch provided by the present invention; .

In the figure: 100-wet type three clutches, 10-motor, 11-motor shell, 111-first oil channel, 1111-first control oil channel, 1112-first lubricating oil channel, 12-stator and 13-rotor;

20-odd clutch, 21-first outer hub, 22-first inner hub assembly, 221-first connecting piece, 222-first inner hub, 223-first friction plate group, 224-first piston assembly, 2241-first piston, 2242-first balance piston, 2243-first balance oil chamber, 2244-first pressure oil chamber, 2245-first return spring;

30-even clutch, 31-second outer hub, 32-second inner hub assembly, 321-second connecting piece, 322-second inner hub, 323-second friction plate group, 324-second piston assembly, 3241-second piston, 3242-second balance piston, 3243-second balance oil chamber, 3244-second pressure oil chamber and 3245-second return spring;

40-engine clutch, 41-third outer hub, 42-third inner hub assembly, 421-third connecting piece, 422-third inner hub, 423-third friction plate set, 424-third piston assembly, 4241-third piston, 4242-third balance piston, 4243-third balance oil chamber, 4244-third pressure oil chamber and 4245-third return spring;

51-a transmission inner input shaft, 52-a transmission outer input shaft, 53-a transmission housing, 531-a fourth oil path, 5311-a fourth control oil path and 5312-a fourth lubricating oil path;

61-a first shaft hub, 611-a second oil duct, 6111-a second control oil duct, 6112-a second lubricating oil duct, 6113-a third control oil duct, 6114-a third lubricating oil duct, 62-a second shaft hub, 621-a fifth oil way, 6211-a fifth control oil duct, 6212-a fifth lubricating oil duct;

71-ball bearing, 72-thrust bearing, 73-dynamic seal ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 7, a wet triple clutch 100 according to the present invention is provided. The wet type triple clutch 100 can be used in various new energy automobiles, is arranged between a power source and a gearbox of an automobile and is used for switching different power sources, so that free switching of three different driving modes, namely pure electric driving, engine driving and hybrid driving, is realized. Specifically, as shown in fig. 1, the wet triple clutch 100 according to the present invention includes: an electric machine 10, an odd clutch 20, an even clutch 30, and an engine clutch 40. The odd clutch 20, the even clutch 30 and the engine clutch 40 in the wet-type three-clutch 100 all adopt rotary piston type clutches, the working principle is the same, the uniformity is strong, the reasonable layout and the position are compact, the overall occupied space is small, and the integration level is high.

Specifically, as shown in fig. 1, the wet triple clutch 100 according to the present invention fixes the motor 10 and the three rotary piston clutches to the outside of the transmission case 53 through two ball bearings 71, so as to realize the fixed connection between the clutches and the transmission. The motor 10 of the wet triple clutch 100 includes a motor housing 11, a stator 12 disposed in the motor housing 11, and a rotor 13 that generates rotational power around the stator 12. The stator 12 is composed of wound coils, the rotor 13 is formed by overlapping a plurality of circular silicon steel sheets, and permanent magnets are embedded in the rotor 13, so that when the rotor 13 rotates around the stator 12, an electric rotary power source can be provided for the wet-type three-clutch 100, and the power is transmitted to the three rotary piston-type clutches.

As shown in fig. 2, the present invention provides an odd-numbered clutch 20 in a wet three-clutch 100. The odd clutch 20 includes a first outer hub 21 drivingly connected to the rotor 13 and a first inner hub assembly 22 engagable with the first outer hub 21, the first inner hub assembly 22 drivingly connected to the transmission inner input shaft 51 for transmitting rotational power from the first outer hub 21 to the transmission inner input shaft 51. The first outer hub 21 of the odd clutch 20 is drivingly connected to the rotor 13 of the motor 10 via splines (not shown), so that the rotational power generated by the motor 10 is transmitted to the first outer hub 21. When the first outer hub 21 is coupled to the first inner hub assembly 22, rotational power received at the first outer hub 21 will be transmitted by the first inner hub assembly 22 to the transmission inner input shaft 51 for driving connection.

The first inner hub assembly 22 of the odd clutch 20 includes a first connecting member 221 in transmission connection with the transmission inner input shaft 51, a first inner hub 222 fixedly connected with the first connecting member 221, a first friction plate set 223 disposed between the first inner hub 222 and the first outer hub 21, and a first piston assembly 224 disposed between the first friction plate set 223 and the first outer hub 21 and capable of moving relatively, and when the first piston assembly 224 abuts against the first friction plate set 223, the first inner hub 222 and the first outer hub 21 are combined to form transmission connection. The first friction plate set 223 is formed by a plurality of disc-shaped friction plates and a plurality of disc-shaped steel plates which are alternately arranged. When first piston assembly 224 abuts first set of friction plates 223, engagement of odd clutch 20 is achieved, thereby achieving the drive connection. The first connecting member 221 is in transmission connection with the transmission inner input shaft 51 through a spline, so that power transmitted after the clutch is combined is transmitted to the transmission inner input shaft 51 to realize transmission connection.

Specifically, as shown in fig. 2, the first piston assembly 224 in the odd clutch 20 includes a first piston 2241 disposed between the first outer hub 21 and the first inner hub 222 and a first balance piston 2242 fixed to the outer side of the third outer hub 41, a first balance oil chamber 2243 is formed between the first piston 2241 and the first balance piston 2242, a first pressure oil chamber 2244 is formed between the first piston 2241 and the first outer hub 21, and a first return spring 2245 for returning the first piston 2241 is disposed in the first balance oil chamber 2243. When the odd clutch 20 needs to be engaged, the first piston 2241 needs to be pushed by the pressure oil from the initial position toward the first friction plate group 223, and finally, the odd clutch comes into contact with the first friction plate group 223. Both the pressure oil and the lubricating oil of the odd clutch 20 are supplied to the motor housing 11 side.

As shown in fig. 5, a first oil passage 111 that supplies oil to the odd-numbered clutch 20 is provided in the motor housing 11, and the first oil passage 111 includes a first control oil passage 1111 that supplies pressure control oil to the odd-numbered clutch 20 and a first lubricating oil passage 1112 that supplies cooling lubricating oil to the odd-numbered clutch 20. The oil passage in the motor case 11 communicates through a first hub 61 fixed to the motor case 11. As shown in fig. 1, the first hub 61 is fixed to the motor housing 11 on one side and is fixedly connected to the first outer hub 21 of the odd clutch 20. In the present embodiment, the first hub 61 is fixedly connected to the first outer hub 21 and the motor housing 11, respectively, by welding. The first hub 61 functions to support the odd clutch 20 on the motor housing 11, while the first hub 61 is provided with a second oil passage 611 communicating with the first oil passage 111. Oil passage into the odd clutch 20 in the motor housing 11 is achieved through the second oil passage 611 on the first hub 61, thereby pushing the movement of the first piston assembly 224 in the odd clutch 20.

As shown in fig. 6, the second oil passage 611 on the first shaft hub 61 includes a second control oil passage 6111 that supplies oil to the first pressure oil chamber 2244 and a second lubricating oil passage 6112 that supplies oil to the first balance oil chamber 2243, the second control oil passage 6111 communicating with the first control oil passage 1111, and the second lubricating oil passage 6112 communicating with the first lubricating oil passage 1112. When the odd clutch 20 needs to be engaged, only the second control oil passage 6111 of the first hub 61 of the pressure oil on the first control oil passage 111 of the motor housing 11 enters the first pressure oil chamber 2244, so that the first piston 2241 is pushed to move toward the first friction plate set 223 and finally abuts to achieve engagement of the clutch. When the first piston assembly 224 is disengaged from the first friction plate set 223, the first piston 2241 is pushed back to the initial position by the first return spring 2245, and the odd clutch 20 is disengaged. In this embodiment, the first piston 2241 and the first balance piston 2242, which are located in the odd-numbered clutch 20, are vulcanized rubber pistons, the first return spring 2245 is a belleville spring,

further, as shown in fig. 1, the wet type triple clutch 100 provided by the present invention further includes an even clutch 30 disposed at one side of the odd clutch 20. The even clutch 30 and the odd clutch 20 are arranged in parallel in the longitudinal direction of the rotor 13 of the motor 10. The even clutch 30 includes a second outer hub 31 drivingly connected to the first outer hub 21 and a second inner hub assembly 32 engagable with the second outer hub 31, the second inner hub assembly 32 being drivingly connected to the transmission outer input shaft 52 for transmitting rotational power from the second outer hub 31 to the transmission outer input shaft 52. The second outer hubs 31 of the even clutches 30 are in splined driving connection with the first outer hubs 21, so that the rotational power received at the first outer hubs 31 of the odd clutches 20 can be directly transmitted to the second outer hubs 31 of the even clutches 30 and transmitted to the transmission outer input shaft 52 by engagement of the even clutches 30.

Specifically, as shown in fig. 3, the second inner hub assembly 32 of the even clutch 30 includes a second connecting member 321 in transmission connection with the transmission outer input shaft 52, a second inner hub 322 fixedly connected to the second connecting member 321, a second friction plate set 323 disposed between the second inner hub 322 and the second outer hub 31, and a second piston assembly 324 disposed between the second friction plate set 323 and the second outer hub 31 and capable of moving relatively, and when the second piston assembly 324 abuts against the second friction plate set 323, the second inner hub 322 and the second outer hub 31 are combined to form transmission connection. The second connecting piece 321 and the transmission outer input shaft 52 are in transmission through spline transmission connection. Second piston assembly 324 includes a second piston 3241 disposed between second outer hub 31 and second inner hub 322, and a second balanced piston 3242 disposed between second inner hub 322 and second piston 3241, a second balanced oil chamber 3243 is formed between second piston 3241 and second balanced piston 3242, a second pressure oil chamber 3244 is formed between second piston 3241 and second outer hub 31, and a second return spring 3245 for returning second piston 3241 is disposed in second balanced oil chamber 3243. In this embodiment, the second piston 3241 and the second balance piston 3242 are both vulcanized rubber pistons, and the second return spring 3245 is a coil spring set.

The engagement and disengagement principle of the even clutch 30 is identical to that of the odd clutch 20 and will not be described in detail. The pressurized oil and the lubricating oil in the even-numbered clutch 30 are both supplied from the transmission case 53 on the other side. As shown in fig. 5, the transmission case 53 is provided with a fourth oil passage 531 for supplying oil to the even-numbered clutches 30, and the second hub 62 is provided with a fifth oil passage 621 through which the fourth oil passage 531 communicates. The second hub 62 is provided not only to function as a support and a fixing for the even-numbered clutch but also to provide a fifth oil passage 621 on the inner side thereof so that the oil passage on the transmission case 53 communicates with the even-numbered clutch 30.

As shown in fig. 5, the fourth oil passage 531 includes a fourth control oil passage 5311 that supplies pressure oil to the even-numbered clutches 30 and a fourth lubricating oil passage 5312 that supplies cooling lubricating oil to the even-numbered clutches 30. As shown in fig. 7, the fifth oil passage 621 on the second hub 62 includes a fifth control oil passage 6211 that supplies oil to the second pressure oil chamber 3244 and a fifth lubricating oil passage 6212 that supplies oil to the second balance oil chamber 3243, the fifth control oil passage 6211 communicating with the fourth control oil passage 5311, and the fifth lubricating oil passage 6212 communicating with the fourth lubricating oil passage 5312. The pressurized oil and the lubricating oil required for the even-numbered clutches 30 are both provided from one side of the transmission case 53, and the engagement of the even-numbered clutches 30 is achieved.

As shown in fig. 1, the wet triple clutch 100 provided by the present invention further includes an engine clutch 40. The engine clutch 40 includes a third outer hub 41 drivingly connected to the rotor 13 and a third inner hub assembly 42 disposed within the third outer hub 41 and engageable with the third outer hub 41, the third inner hub assembly 42 being drivingly connected to a flywheel (not shown) of the engine to transmit rotational power of the engine to the third outer hub 41. The engine clutch 40 is mainly used to transmit power generated by the flywheel of the engine. If the motor 10 and the engine simultaneously generate power and the engine clutch 40 is engaged, the power generated by the motor 10 and the engine is coupled through the engine clutch 40, the odd clutch 20 and the even clutch 30, and then is transmitted to the transmission to realize hybrid driving. When the motor 10 does not generate power and the engine clutch 40 is engaged, the power generated by the engine is transmitted to the odd clutch 20 and the even clutch 30, and finally transmitted to the transmission inner input shaft 51 and the transmission outer input shaft 52 by the odd clutch 20 and the even clutch 30 to realize pure engine drive. If the engine clutch 40 is disengaged, the power generated by the engine cannot be transmitted to the odd clutch 20 and the even clutch 30 through the engine clutch 40, and therefore, the power generated by the motor 10 can be transmitted to the transmission through the odd clutch 20 and the even clutch 30 to realize the pure electric drive.

Specifically, as shown in fig. 4, in the wet type third clutch 100 of the present invention, the third inner hub assembly 42 of the engine clutch 40 includes a third connecting member 421 fixed to the motor housing 11 and drivingly connected to a flywheel (not shown) of the engine, a third inner hub 422 fixedly connected to the third connecting member 421, a third friction plate set 423 disposed between the third inner hub 422 and the third outer hub 41, and a third piston assembly 424 disposed between the third friction plate set 423 and the third outer hub 41 and capable of moving relatively, and when the third piston assembly 424 abuts against the third friction plate set 423, the third inner hub 422 and the third outer hub 41 are combined to form a driving connection. One side of the third connection 421 on the third inner hub assembly 42 is in driving connection with the flywheel of the engine through a spline. When the engine clutch 40 is engaged, engine power received at the third inner hub assembly 42 will be transferred to the third outer hub 41. The third piston assembly 424 includes a third piston 4241 disposed between the third outer hub 41 and the third inner hub 422, and a third balanced piston 4242 fixed to the first hub 61, a third balanced oil chamber 4243 is formed between the third piston 4241 and the third balanced piston 4242, a third pressure oil chamber 4244 is formed between the third piston 4241 and the third outer hub 41, and a third return spring 4245 for returning the third piston 4241 is provided in the third balanced oil chamber 4243.

The principle and manner of operation of the engine clutch 40 is identical to that of the odd clutch 20 and will not be described in detail herein. And the pressure oil and the lubrication oil of the third piston assembly 424 of the engine clutch 40 are both supplied from the first oil passage 111 on one side of the motor housing 11. The second oil passage 611 on the first hub 61 therefore further includes a third control oil passage 6113 that supplies oil to the third pressure oil chamber 4244 and a third lubricating oil passage 6114 that supplies oil to the third balanced oil chamber 4243, the third control oil passage 6113 communicates with the first control oil passage 1111, and the third lubricating oil passage 6114 communicates with the first lubricating oil passage 1112.

As shown in fig. 1, the wet clutch 100 of the present invention further includes a first hub 61 fixed to the motor housing 11 and a second hub 62 fixed to the transmission housing 53, wherein the first hub 61 is fixedly connected to the first outer hub 21 of the odd clutch 20 and the third outer hub 41 of the engine clutch 40, and the second hub 62 is fixedly connected to the second outer hub 31 of the even clutch 30. The first hub 61 is fixedly connected with the motor housing 11, the first outer hub 21 of the odd-numbered clutch 20 and the third outer hub 41 of the engine clutch 40 by welding. Therefore, the power transmission between the engine clutch 40 and the odd-numbered clutch 20 is realized by the first hub 61, and when the engine clutch 40 is engaged, the power generated at the engine can be transmitted to the first outer hub 21 of the odd-numbered clutch 20 through the third outer hub 41 of the engine clutch 40, and the power of the motor and the power of the engine can be coupled at the first outer hub 21. Meanwhile, the first outer hub 21 of the odd clutch 20 and the second outer hub 31 of the even clutch 30 are in spline transmission connection, so that the power of the motor and the power of the engine can be coupled on the even clutch at the same time. The third outer hub 41 of the engine clutch 40 is connected to the rotor 13 of the electric machine 11 by spline transmission, so that when the engine clutch 40 is engaged, the third outer hub 41 can also couple and transmit two power sources. The second hub 62 is fixedly connected with the second outer hub 31 of the even clutch 30 by welding, and the second outer hub 31 is in transmission connection with the first outer hub 21 of the odd clutch 30, so that the second hub 62, the even clutch 30, the odd clutch 20 and the first hub 61 form a whole to rotate around the central shaft.

Specifically, as shown in fig. 1, thrust bearings are provided between the first outer hub 21 of the odd clutch 20 and the motor housing 11, between the first shaft hub 61 and the third inner hub assembly 42 of the engine clutch 40, between the third inner hub assembly 42 of the engine clutch 40 and the first inner hub assembly 22 of the odd clutch 20, and between the first inner hub assembly 22 of the odd clutch 20 and the second inner hub assembly 32 of the even clutch 30 for restricting oil passages in the entire wet three clutch 100. The oil path sealing in the wet type triple clutch 100 provided by the invention adopts the dynamic sealing ring 73 to carry out dynamic sealing.

The working principle of three different driving modes of the wet three-clutch provided by the invention is as follows:

the first method comprises the following steps: electric only mode

The engine clutch 40 is disengaged, and engine power cannot be transmitted to the transmission by the engine clutch 40. The rotational power generated by the motor 10 is transmitted from the rotor 13 to the first outer hub 21 of the odd clutch 20, and is transmitted from the first outer hub 21 to the second outer hub 31 of the even clutch 30. The odd clutch 20 and the even clutch 30 are simultaneously engaged, so that the power of the rotor 13 is transmitted to the transmission inner input shaft 53 through the odd clutch 20, and the power of the rotor 13 is transmitted to the transmission outer input shaft 52 through the even clutch 30, thereby realizing the power transmission from the motor 10 to the transmission.

And the second method comprises the following steps: engine only mode

The engine clutch 40 is engaged while the electric machine 10 is not operating. The rotor on the motor 10 generates no power. The power on the engine is transmitted from the third inner hub assembly 42 of the engine clutch 40 to the third outer hub 41, and is transmitted to the first outer hub 21 of the odd clutch 20 and the second outer hub 31 of the even clutch 30 via the first hub 61. The odd clutch 20 and the even clutch 30 are simultaneously engaged, so that the power of the engine is transmitted to the transmission inner input shaft 53 through the odd clutch 20, and the power of the engine is transmitted to the transmission outer input shaft 52 through the even clutch 30, thereby realizing the power transmission from the engine to the transmission.

And the third is that: hybrid mode

The engine clutch 40 is engaged and the electric machine 10 is operating. The power generated by the rotor 13 of the motor 10 is transmitted to the first outer hub 21 of the odd clutch 20, the second outer hub 31 of the even clutch 30, and the third outer hub 31 of the engine clutch 40, respectively. The power of the engine is transmitted to the third outer hub 31 of the engine clutch 40 through the engagement of the engine clutch 40, and is transmitted to the first outer hub 21 of the odd clutch 20 and the second outer hub 31 of the even clutch 30 through the first hub 61. The power of the motor 10 and the power of the engine are coupled on three outer hubs of three clutches, and are finally transmitted to the transmission inner input shaft 51 and the transmission outer input shaft 52 through the combination of the three clutches, so that the power transmission of the engine and the motor to the transmission is realized.

According to the wet type three-clutch 100 provided by the invention, the engine clutch 40, the odd-numbered clutch 20 and the even-numbered clutch 30 are integrated between the motor 10 and the transmission to form the wet type three-clutch 100, the three clutches are all rotary piston type clutches, the working principle is the same, three different working conditions of a pure electric mode, an engine mode and a mixed mode can be freely switched through combination and separation of the three clutches, and the wet type three-clutch 100 can be suitable for being used in a low-pressure oil duct system and a high-pressure oil duct system, is wider in applicability, higher in integration level, compact in overall layout, high in space utilization rate, better in volume, suitable for being arranged and used in various hybrid electric vehicles, and has better economic benefit.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet three clutch, characterized in that, comprising:

a motor, comprising a motor housing, a stator arranged in the motor housing, and a rotor surrounding the stator to generate rotational power;

an odd-numbered clutch, the odd-numbered clutch includes a first outer hub drivingly connected to the rotor and a first inner hub assembly that can be combined with the first outer hub, the first inner hub assembly is drivingly connected to an inner transmission input shaft , which transmits the rotational power on the first outer hub to the inner input shaft of the transmission;

an even-numbered clutch, the even-numbered clutch includes a second outer hub drivingly connected with the first outer hub and a second inner hub assembly that can be combined with the second outer hub, the second inner hub assembly is connected to an outer input of the transmission a shaft drive connection to transmit the rotational power on the second outer hub to the outer input shaft of the transmission;

An engine clutch, the engine clutch includes a third outer hub drivingly connected with the rotor and a third inner hub assembly disposed in the third outer hub and combined with the third outer hub, the third inner hub The hub assembly is connected with the flywheel of the engine, and transmits the rotational power of the engine to the third outer hub;

It also includes a first shaft hub fixed on the motor housing and a second shaft hub fixed on the transmission housing, the first shaft hub is respectively connected with the first outer hub on the odd-numbered clutch and The third outer hub on the engine clutch is fixedly connected, and the second shaft hub is fixedly connected with the second outer hub on the even-numbered clutch.

2 . The wet three-clutch according to claim 1 , wherein the motor housing is provided with a first oil passage for supplying oil to the odd-numbered clutch and the engine clutch, and the first oil passage is provided. 3 . A second oil passage communicated with the first oil passage is arranged in the shaft hub, and the first oil passage includes a first control oil passage that provides pressure control oil for the odd clutch and the engine clutch, and a first oil passage for the odd clutch and the engine clutch. The odd clutch and the engine clutch provide a first oil passage for cooling oil.

3 . The wet three-clutch according to claim 2 , wherein the first inner hub assembly of the odd-numbered clutch comprises a first connecting member that is drivingly connected with the input shaft in the transmission, and is connected to the first inner hub assembly. 4 . a first inner hub fixedly connected by a connecting piece, a first friction plate set disposed between the first inner hub and the first outer hub, and a first friction plate group disposed between the first friction plate group and the first outer hub The first piston assembly is relatively movable therebetween. When the first piston assembly is in contact with the first friction plate group, the first inner hub is combined with the first outer hub to form a transmission connection.

4. The wet three clutch according to claim 3, wherein the first piston assembly comprises a first piston disposed between the first outer hub and the first inner hub and a first piston fixed on the A first balance piston outside the third outer hub, a first balance oil cavity is formed between the first piston and the first balance piston, and a first balance oil cavity is formed between the first piston and the first outer hub. A pressure oil chamber is provided in the first balance oil chamber with a first return spring for restoring the first piston.

5 . The wet three-clutch according to claim 4 , wherein the second oil passage on the first hub comprises a second control oil passage for supplying oil to the first pressure oil chamber and a second oil passage for supplying oil to the first pressure oil chamber. 6 . A second lubricating oil passage for supplying oil to the first balance oil chamber, the second control oil passage communicates with the first control oil passage, and the second lubricating oil passage communicates with the first lubricating oil passage.

6 . The wet three clutch according to claim 2 , wherein the third inner hub assembly of the engine clutch comprises a third connection fixed on the motor housing and connected to the flywheel drive of the engine. 7 . parts, a third inner hub fixedly connected with the third connecting piece, a third friction plate set disposed between the third inner hub and the third outer hub, and a third friction plate set disposed between the third friction plate set and the The third piston assembly is relatively movable between the third outer hubs. When the third piston assembly is in contact with the third friction plate group, the third inner hub and the third outer hub are combined to form a transmission connect.

7 . The wet three clutch according to claim 6 , wherein the third piston assembly comprises a third piston disposed between the third outer hub and the third inner hub and a third piston fixed on the third inner hub. 8 . The third balance piston on the first shaft hub, a third balance oil cavity is formed between the third piston and the third balance piston, and a third balance oil cavity is formed between the third piston and the third outer hub. Three pressure oil chambers, and a third return spring for restoring the third piston is arranged in the third balance oil chamber.

8 . The wet three clutch according to claim 7 , wherein the second oil passage on the first hub comprises a third control oil passage for supplying oil to the third pressure oil chamber and a third control oil passage for supplying oil to the third pressure oil chamber. The third lubricating oil passage for supplying oil to the third balance oil chamber, the third control oil passage communicates with the first control oil passage, and the third lubricating oil passage communicates with the first lubricating oil passage.

9 . The wet three-clutch according to claim 2 , wherein a fourth oil passage for supplying oil to the even-numbered clutches is arranged on the transmission housing, and a fourth oil passage is arranged in the second hub. The fourth oil passage communicates with the fifth oil passage.

10 . The wet three-clutch according to claim 9 , wherein the second inner hub assembly of the even-numbered clutch comprises a second connecting member drivingly connected with the outer input shaft of the transmission, and is connected with the second inner hub. 11 . a second inner hub fixedly connected by the connecting piece, a second friction plate set disposed between the second inner hub and the second outer hub, and a second friction plate group disposed between the second friction plate group and the second outer hub The second piston assembly is relatively movable therebetween. When the second piston assembly is in contact with the second friction plate group, the second inner hub is combined with the second outer hub to form a transmission connection.

11. The wet three-clutch of claim 10, wherein the second piston assembly comprises a second piston disposed between the second outer hub and the second inner hub and a second piston disposed between the second outer hub and the second inner hub. A second balance piston between the second inner hub and the second piston, a second balance oil chamber is formed between the second piston and the second balance piston, and the second piston is connected to the second balance piston. A second pressure oil chamber is formed between the two outer hubs, and a second return spring for restoring the second piston is arranged in the second balance oil chamber.

12 . The wet triple clutch according to claim 11 , wherein the fourth oil passage comprises a fourth control oil passage for providing pressure oil for the even-numbered clutches and a fourth lubricating oil passage for providing cooling lubricating oil for the even-numbered clutches 13 . an oil passage, the fifth oil passage on the second hub includes a fifth control oil passage for supplying oil to the second pressure oil chamber and a fifth lubricating oil passage for supplying oil to the second balance oil chamber, The fifth control oil passage communicates with the fourth control oil passage, and the fifth lubricating oil passage communicates with the fourth lubricating oil passage.