CN209208474U

CN209208474U - Hybrid power coupled system and vehicle

Info

Publication number: CN209208474U
Application number: CN201822089933.9U
Authority: CN
Inventors: 祁宏钟; 张安伟; 赵江灵; 吴为理; 尚阳; 王川; 郑峰; 朱永明
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2018-12-12
Filing date: 2018-12-12
Publication date: 2019-08-06
Anticipated expiration: 2028-12-12

Abstract

The utility model belongs to new-energy automobile field, it is related to hybrid power coupled system and vehicle, including engine, generator, driving motor, first planetary gear mechanism, first brake, second clutch and the first jackshaft, first planetary gear mechanism includes the first sun wheel shaft, first sun gear, first planet carrier, first planetary gear and the first gear ring, engine is connected with the first sun wheel shaft, generator is connected with the first sun wheel shaft or the first gear ring, first sun gear is fixedly arranged in the first sun wheel shaft, first gear ring is connected with the first brake, first gear ring is connected by second clutch with the first sun wheel shaft, first planet carrier, which is slowed down, connects the first jackshaft, driving motor is connected with the first jackshaft, first jackshaft output power is to wheel；Be conducive to reduce system load, can be realized multiple drive modes, there is higher transmission efficiency, improve the power performance and economy of vehicle.

Description

Hybrid power coupling system and vehicle

Technical Field

The utility model belongs to the new energy automobile field especially relates to hybrid coupled system and vehicle.

Background

The power system comprises an engine (internal combustion engine) and a transmission system consisting of a transmission, a differential and a transmission shaft; its function is to provide the vehicle with the driving power required for the driving wheels. Internal combustion engines have a range of speeds and torques and achieve optimum operation within a small range, with minimum fuel consumption, minimum harmful emissions, or both. However, the actual road conditions vary greatly, and they are reflected not only in the speed of the driving wheels, but also in the torque required by the driving wheels. Therefore, it is the primary task of the transmission to achieve the optimum speed and torque of the internal combustion engine, i.e., the optimum power state, and match the power state of the driving wheels well.

The transmissions on the market at present mainly comprise a step transmission and a continuously variable transmission. Step-variable transmissions are subdivided into manual and automatic. They most provide a limited number of discrete output-to-input speed ratios through different meshing arrangements of gear trains or planetary gear trains. The speed of the drive wheels between two adjacent speed ratios is adjusted by means of the speed variation of the internal combustion engine. Continuously variable transmissions, whether mechanical, hydraulic, or electro-mechanical, provide an infinite number of continuously selectable speed ratios over a range of speeds, and theoretically, the speed change of the drive wheels can be accomplished entirely through the transmission. In this way, the internal combustion engine can be operated in the optimum speed range as much as possible. Meanwhile, compared with a stepped transmission, the stepless transmission has the advantages of stable speed regulation, full utilization of the maximum power of an internal combustion engine and the like, so that the stepless transmission is a subject of research of engineers in various countries for many years.

In recent years, the emergence of motor hybrid technology has opened up a new approach for achieving complete matching of power between an internal combustion engine and a power wheel. Among the many designs of powertrain, the most representative are the series hybrid system and the parallel hybrid system. In the series hybrid system of the electric motor, a generator of the internal combustion engine, a motor, a shafting and a driving wheel form a series power chain, and the structure of the power assembly is extremely simple. Wherein the generator-motor combination can be considered as a transmission in the conventional sense. When used in combination with an energy storage device, such as a battery, capacitor, etc., the transmission may also function as an energy modulation device to accomplish independent speed and torque modulation.

The motor parallel system is provided with two parallel independent power chains. One consisting of a conventional mechanical transmission and the other consisting of an electric motor-battery system. The mechanical transmission is responsible for speed regulation, while the electric machine-battery system regulates power or torque. In order to fully develop the potential of the whole system, the mechanical transmission also needs to adopt a stepless speed change mode.

The serial hybrid system has the advantages of simple structure and flexible layout. However, since all power passes through the generator and the motor, the power requirement of the motor is high, the volume is large, and the weight is heavy. Meanwhile, the energy transmission process is converted by two machines, namely electricity and machine, so that the efficiency of the whole system is low. In a parallel hybrid system, only a portion of the power passes through the electric machine system, and therefore, the power requirements on the electric machine are relatively low. The efficiency of the whole system is high. However, the system needs two sets of independent subsystems and is high in manufacturing cost. Typically only for weak mixing systems.

A conventional power coupling system includes an engine, a first planetary gear mechanism, a second planetary gear mechanism, a power battery, and a first motor and a second motor respectively connected to the power battery; the first planetary gear mechanism comprises a first sun gear, a first planet gear, a first external gear ring and a first planet carrier, and the second planetary gear mechanism comprises a second sun gear, a second planet gear, a second external gear ring and a second planet carrier; the engine is connected with the first sun gear, a first clutch for controlling the separation and closing of the engine and the first sun gear and a first brake for locking the first sun gear are arranged between the engine and the first sun gear, the second motor is respectively connected with the first sun gear or the first planet carrier through a second clutch and a planet carrier clutch, a second brake for locking the first planet carrier is arranged between the second motor and the first planetary gear mechanism, and outer ring gear teeth of the planetary gear mechanism are connected with the first outer gear ring and meshed with a driving wheel of the outer gear ring for transmitting the torque coupled by the engine and the motor to the second planetary gear mechanism;

a second gear ring clutch is arranged between the second outer gear ring and the second planet carrier and is used for controlling the separation and closing of the second outer gear ring and the second planet carrier; an outer gear ring brake is arranged on the second outer gear ring and used for locking the second outer gear ring; the second planetary gear mechanism, the outer gear ring brake and the second gear ring clutch jointly form a two-gear speed change mechanism. The second planetary gear mechanism is connected with the differential mechanism through a gear set, and then the coupled torque is transmitted to wheels through the differential mechanism;

although the conventional power coupling system can realize multiple working modes through different control strategies, the structure is complex, the system load is increased, the control is complex, the engine, the first motor and the second motor are all connected to the first planetary gear mechanism, when the wheels are driven, the power of the engine, the first motor and the second motor is required to be output through the first planetary gear mechanism and the second planetary gear mechanism, and the power performance and the economy are insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: aiming at the problem that the dynamic property and the economical efficiency of the power coupling system in the existing scheme are insufficient, the hybrid power coupling system and the vehicle are provided.

In order to solve the technical problem, an embodiment of the present invention provides a hybrid coupling system, including an engine, a generator, a driving motor, a first planetary gear mechanism, a first brake, a second clutch, and a first intermediate shaft, where the first planetary gear mechanism includes a first sun gear shaft, a first sun gear, a first planet carrier, a first planet gear, and a first gear ring;

the engine is connected with the first sun gear shaft;

the generator is connected with the first sun gear shaft or the first gear ring;

the first sun gear is fixedly arranged on the first sun gear shaft, the first gear ring is connected with the first brake, the first gear ring is connected with the first sun gear shaft through the second clutch, and the first planet carrier is in deceleration connection with the first intermediate shaft;

the driving motor is connected with the first intermediate shaft;

the first intermediate shaft outputs power to wheels.

The embodiment of the utility model provides a vehicle, including the controller with connect in the battery of controller; the hybrid power coupling system is characterized in that the engine, the generator and the driving motor are connected to and controlled by the controller.

The embodiment of the utility model provides a hybrid coupling system and vehicle, first planetary gear mechanism is whole rotatory when the second clutch combines, whether participate in the speed reduction through controlling first planetary gear mechanism and realize two fender speed reductions of engine, the engine has two fender positions, when the generator links to each other with the ring gear, realize one fender speed reduction of generator through the speed reduction of first planet carrier to first jackshaft, when the generator links to each other with first sun gear axle, whether participate in the speed reduction through controlling first planetary gear mechanism and realize two fender speed reductions of generator, the dynamic behavior of whole car has been improved remarkably; by switching the working state (combination or disconnection) of the first brake and the working state (combination or disconnection) of the second clutch, the gear of the wheel driven by the engine or the generator can be controlled, the wheel can be driven by the driving motor, various driving modes can be realized, higher transmission efficiency can be obtained, and the vehicle economy can be improved; the engine and the generator share the speed reduction assembly (the speed reduction connecting structure from the first planet carrier to the first intermediate shaft, or the speed reduction connecting structure from the first planet gear mechanism and the first planet carrier to the first intermediate shaft), the structure is simple and compact, the number of parts is reduced, the system load is reduced, the power performance of the whole vehicle is improved, the volume is reduced, and the cost of the speed reduction assembly is reduced;

in the hybrid driving mode, the dual-motor pure electric mode, the single-motor pure electric mode and the series range extending mode, the driving motors are all involved in driving, and power interruption is avoided.

The hybrid power coupling system effectively supplements the driving power required by the wheels through the power battery so as to more reasonably allocate the power of the internal combustion engine and keep the working state of the internal combustion engine free from or less influenced by road conditions. The internal combustion engine can always work in a set optimal state to improve the fuel efficiency of the whole vehicle, is suitable for HEV (hybrid electric vehicle) models and PHEV (hybrid electric vehicle) models, and has good platformization.

Drawings

Fig. 1 is a schematic structural diagram of a hybrid power coupling system according to an embodiment of the present invention;

FIG. 2 is a power transfer route diagram of the hybrid coupling system of FIG. 1 in a first engine direct drive mode;

FIG. 3 is a power transfer route diagram of the hybrid coupling system of FIG. 1 in a second engine direct drive mode;

FIG. 4 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a first hybrid drive mode;

FIG. 5 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a second hybrid drive mode;

FIG. 6 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a third hybrid drive mode;

FIG. 7 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a fourth hybrid drive mode;

FIG. 8 is a power transmission scheme of the hybrid coupling system of FIG. 1 in a first two-motor electric-only mode;

FIG. 9 is a power transmission scheme of the hybrid coupling system of FIG. 1 in a second two-motor electric-only mode;

FIG. 10 is a power transfer route diagram of the hybrid coupling system of FIG. 1 in a third dual-motor electric-only mode;

FIG. 11 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a fourth dual-motor electric-only mode;

FIG. 12 is a power transmission scheme of the hybrid coupling system of FIG. 1 in a first single-motor electric-only mode;

FIG. 13 is a power transmission scheme of the hybrid coupling system of FIG. 1 in a second single-motor electric-only mode;

FIG. 14 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a first series range extending mode;

FIG. 15 is a power transmission route diagram of the hybrid coupling system of FIG. 1 in a second series range extending mode;

the reference numerals in the specification are as follows:

1. an engine; 2. a generator; 3. a drive motor;

4. a first planetary gear mechanism; 41. a first sun gear shaft; 42. a first sun gear; 43. a first carrier; 44. a first planet gear; 45. a first ring gear;

5. a first clutch; 6. a first brake; 7. a second clutch;

8. a second planetary gear mechanism; 81. a second sun gear shaft; 82. a second sun gear; 83. a second planet carrier; 84. a second planet wheel; 85. a second ring gear;

9. a second brake; 10. a third clutch;

11. a first intermediate shaft;

12. a first reduction gear pair; 121. a first gear; 122. a second gear;

13. a second intermediate shaft;

14. a speed increasing gear pair; 141. a third gear; 142. a fourth gear;

15. a second reduction gear pair; 151. a fifth gear; 152. a sixth gear;

16. a differential mechanism; 17. and (7) wheels.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, a hybrid coupling system provided by the embodiment of the present invention includes an engine 1, a generator 2, a driving motor 3, a first planetary gear mechanism 4, a first brake 6, a second clutch 7, and a first intermediate shaft 11; the first planetary gear mechanism 4 includes a first sun gear shaft 41, a first sun gear 42, a first carrier 43, a first planetary gear 44, and a first ring gear 45;

the engine 1 is connected to the first sun gear shaft 41;

the generator 2 is connected to the first sun gear shaft 41 (as shown in fig. 1), or the generator 2 is connected to the first ring gear 45 (not shown);

the first sun gear 42 is fixedly arranged on the first sun gear shaft 41, the first gear ring 45 is connected with the first brake 6, the first gear ring 45 is connected with the first sun gear shaft 41 through the second clutch 7, and the first planet carrier 43 is connected with the first intermediate shaft 11 in a speed reduction manner;

the driving motor 3 is connected with the first intermediate shaft 11;

the first intermediate shaft 11 outputs power to the wheels 17.

When in use, the first brake 6 is combined, the first ring gear 45 is fixed, the second clutch 7 is separated, the power of the engine 1 is input by the first sun gear 42, the first planet carrier 43 is output, and the speed ratio of the first planetary gear mechanism 4 is K1+1, wherein K1 is a characteristic parameter of the first planetary gear mechanism 4; or the first brake 6 is separated, and the second clutch 7 is combined, so that the first ring gear 45 and the first sun gear 42 are locked into a whole, the speed ratio of the whole first planetary gear mechanism 4 is 1, and the whole first planetary gear mechanism 4 rotates to output power; the power of the engine 1 is transmitted to the first intermediate shaft 11 through any one of the two paths, and then is output to the wheels 17 through the first intermediate shaft 11, so that the wheels 17 are directly driven by the engine 1;

when the generator 2 is connected with the first sun gear shaft 41, the first brake 6 is combined to fix the first ring gear 45, the second clutch 7 is separated, the power of the generator 2 is input by the first sun gear 42, the first planet carrier 43 is output, and the speed ratio of the first planetary gear mechanism 4 is K1+1, wherein K1 is a characteristic parameter of the first planetary gear mechanism 4; or the first brake 6 is separated, and the second clutch 7 is combined, so that the first ring gear 45 and the first sun gear 42 are locked into a whole, the speed ratio of the whole first planetary gear mechanism 4 is 1, and the whole first planetary gear mechanism 4 rotates to output power; the power of the generator 2 is transmitted to the first intermediate shaft 11 through any one of the two paths, and then is output to the wheels 17 through the first intermediate shaft 11, so that the generator 2 drives the wheels 17; similarly, when the generator 2 is connected to the first ring gear 45, the first brake 6 is disengaged, and the second clutch 7 is engaged, so that the generator 2 can drive the wheels 17, which is one less driving gear than the aforementioned scheme in which the generator 2 is connected to the first sun gear shaft 41.

The power of the driving motor 3 can be output to the wheels 17 through the intermediate shaft, so that the driving motor 3 can directly drive the wheels 17;

the power of the engine 1 can be transmitted to the first sun gear shaft 41, and the power of the first sun gear shaft 41 can be transmitted to the generator 2, thereby driving the generator 2 to generate electricity;

when the engine 1 or the generator 2 and the driving motor 3 participate in driving together, the first intermediate shaft plays a role of coupling power and transmits the coupled power to the wheels 17;

when the engine 1 and the generator 2 participate in driving together, the first sun gear shaft 41 functions to couple power and transmit the coupled power to the wheels 17.

The embodiment of the utility model provides a hybrid coupling system, first planetary gear mechanism 4 is whole rotatory when second clutch 7 combines, whether participate in the speed reduction through controlling first planetary gear mechanism 4 and realize the two-gear speed reduction of engine 1, engine 1 has two fender position, when generator 2 links to each other with the ring gear, realize the one-gear speed reduction of generator 2 through the speed reduction of first planet carrier 43 to first jackshaft 11, when generator 2 links to each other with first sun gear shaft 41, whether participate in the speed reduction through controlling first planetary gear mechanism 4 and realize the two-gear speed reduction of generator 2, the dynamic property of whole car has been improved remarkably; by switching the working state (connection or disconnection) of the first brake 6 and the working state (connection or disconnection) of the second clutch 7, the gear of the wheel 17 driven by the engine 1 or the generator 2 can be controlled, the wheel 17 can be driven by the driving motor 3, various driving modes can be realized, higher transmission efficiency can be obtained, and the vehicle economy can be improved; the engine 1 and the generator 2 share a speed reduction assembly (a speed reduction connection structure from the first planet carrier 43 to the first intermediate shaft, or a speed reduction connection structure from the first planet gear mechanism 4 and the first planet carrier 43 to the first intermediate shaft), the structure is simple and compact, the number of parts is reduced, the system load is reduced, the power performance of the whole vehicle is improved, the size is reduced, and the cost of the speed reduction assembly is reduced;

in the hybrid driving mode, the dual-motor pure electric mode, the single-motor pure electric mode and the series range extending mode, the driving motor 3 is driven to avoid power interruption.

The hybrid power coupling system effectively supplements the driving power required by the wheels 17 through the power battery so as to more reasonably allocate the power of the internal combustion engine and keep the working state of the internal combustion engine free from or less influenced by road conditions. The internal combustion engine can always work in a set optimal state to improve the fuel efficiency of the whole vehicle, is suitable for HEV (hybrid electric vehicle) models and PHEV (hybrid electric vehicle) models, and has good platformization.

Among them, the generator 2 is a motor/generator (M/G) that can be used for power generation and driving.

Specifically, the generator 2 also functions as a starter motor for starting the engine 1. If the generator 2 is not driven and does not generate power and the engine 1 is driven, the generator 2 starts the engine 1 and then stops working; when the generator 2 is driven or generates power and the engine 1 is driven, the generator 2 keeps the operating state after starting the engine 1.

Preferably, the first planet carrier 43 is rotatably sleeved on the first sun gear shaft 41, which is beneficial to increasing the structural stability and the transmission stability.

In an embodiment, as shown in fig. 1, the present invention further includes a second planetary gear mechanism 8, a second brake 9, and a third clutch 10, the second planetary gear mechanism 8 includes a second sun gear shaft 81, a second sun gear 82, a second planet carrier 83, a second planet gear 84, and a second ring gear 85;

the second sun gear 82 is fixedly arranged on the second sun gear shaft 81, the second planet carrier 83 is connected to the first intermediate shaft 11, the second gear ring 85 is connected with the second brake 9, and the second gear ring 85 is connected with the second sun gear shaft 81 through the third clutch 10;

the drive motor 3 is connected to the second sun gear shaft 81.

The second ring gear 85 is fixed by combining the second brake 9, the third clutch 10 is separated, the power of the generator 2 is input by the second sun gear 82, the second planet carrier 83 outputs the power to the first intermediate shaft 11, the speed ratio of the second planetary gear mechanism 8 is K2+1, wherein K2 is a characteristic parameter of the second planetary gear mechanism 8; or the second brake 9 is separated, and the third clutch 10 is combined, so that the second gear ring 85 and the second sun gear 82 are locked into a whole, the speed ratio of the whole second planetary gear mechanism 8 is 1, and the whole second planetary gear mechanism 8 rotates to output power to the first intermediate shaft 11; the power of the generator 2 is transmitted to the first intermediate shaft 11 through any one of the two paths, and then is output to the wheels 17 through the second intermediate shaft 13, so that the driving motor 3 drives the wheels 17. The generator 2 is coaxial with the engine 1 and is connected through the first planetary gear mechanism 4, the driving motor 3 is coaxial with the first intermediate shaft 11 and is connected through the second planetary gear mechanism 8, the structure is simple, more work types can be realized, and the economical efficiency of the vehicle is better improved.

In one embodiment, as shown in fig. 1, the hybrid coupling system further includes a first clutch 5, and the output shaft of the engine 1 is connected to the first sun gear shaft 41 through the first clutch 5. Whether the engine 1 participates in the driving is controlled by controlling the on-off of the first clutch 5; when the engine 1 is required to drive the wheels 17 or the generator 2 to generate power, the first clutch 5 is combined, and when the engine 1 is not required to work, the first clutch 5 is disconnected to reduce the system load and protect the engine 1.

In one embodiment, as shown in fig. 1, the hybrid coupling system further includes a first reduction gear pair 12, and the first carrier 43 is connected to the first intermediate shaft 11 through the first reduction gear pair 12;

specifically, the first reduction gear pair 12 includes a first gear 121 and a second gear 122 engaged with each other, the first gear 121 is engaged with the first carrier 43, and the second gear 122 is fixedly disposed on the first intermediate shaft 11; the structure is simple and compact, the system load is reduced, and the transmission stability is ensured;

preferably, a second intermediate shaft 13 is further included, and the first gear 121 is arranged on the second intermediate shaft 13, so that the transmission stability is further improved. Or,

in another embodiment, the hybrid coupling system further includes a second gear, and the second gear 122 is fixed on the first intermediate shaft 13 and is meshed with the first carrier 43 (referring to fig. 1, on the basis of fig. 1, the first gear 121 and the second intermediate shaft 13 are eliminated, and the second gear 122 is meshed with the first carrier 43), which reduces the first gear 121 and the second intermediate shaft 13 compared with the previous scheme, and is beneficial to reducing the system load.

In one embodiment, as shown in fig. 1, when the generator 2 is connected to the first sun gear shaft 41, the first sun gear shaft 41 is connected to the generator 2 through the speed increasing gear pair 14; when the generator 2 participates in driving, the generator 2 goes to the first sun gear shaft 41 and goes through the speed-increasing gear pair 14 to realize speed reduction and torque increase. Similarly, when the generator 2 is connected to the first ring gear 45, the first ring gear 45 may also be connected to the generator 2 via the speed-increasing gear pair 14.

In one embodiment, as shown in fig. 1, the speed-increasing gear pair 14 includes a third gear 141 and a fourth gear 142, the third gear 141 is fixed on the first sun gear shaft 41, and the fourth gear 142 is fixed on the rotating shaft of the generator 2; the structure is simple and compact, the system load is reduced, and the transmission stability is ensured.

In one embodiment, as shown in fig. 1, the engine 1 is connected to one end of the first sun gear shaft 41, the first planet carrier 43 is rotatably sleeved on the first sun gear shaft 41, and the generator 2 is connected to the other end of the first sun gear shaft 41; the driving motor 3 is connected to one end of the first intermediate shaft 11, and the other end of the first intermediate shaft 11 serves as a power output end. The structure is simple and compact, and the transmission stability is ensured.

Specifically, the drive motor 3 is connected to one end of the first intermediate shaft 11 through the second planetary gear mechanism 8, that is, the second carrier 83 is connected to one end of the first intermediate shaft 11.

Furthermore, as shown in fig. 1, the hybrid coupling system further comprises a differential 16, the first intermediate shaft 11 being connected to the differential 16, the differential 16 driving the wheels 17.

Preferably, as shown in fig. 1, the hybrid coupling system further comprises a second reduction gear pair 15, and the first intermediate shaft 11 is connected to the differential 16 through the second reduction gear pair 15 at a reduced speed. The power provided by the engine 1 and the generator 2 is subjected to multi-stage speed reduction [ the first planet carrier 43, (the first gear 121) and the second gear 122 and the second reduction gear pair 15] or the first planetary gear mechanism 4, (the first gear 121) and the second gear 122 and the second reduction gear pair 15] and then is transmitted to the differential 16, and the power provided by the driving motor 3 is subjected to one-stage speed reduction (the second reduction gear pair 15) or two-stage speed reduction (the second planetary gear mechanism 8 and the second reduction gear pair 15) and then is transmitted to the differential 16, so that better power matching is realized.

More preferably, as shown in fig. 1, the second reduction gear pair 15 includes a fifth gear 151 and a sixth gear 152 that mesh with each other;

the fifth gear 151 is fixedly disposed on the first intermediate shaft 11 (for example, fixed to an end of the first intermediate shaft 11 away from the driving motor 3), and the sixth gear 152 is connected to the differential 16, which is beneficial to simplifying the structure and reducing the system load.

The following describes preferred embodiments relating to the control of the brakes (broadly, the first brake 6, the second brake 9) and the clutches (broadly, the first clutch 5, the second clutch 7, the third clutch 10):

example one

When the generator 2 is connected to the first sun gear shaft 41, and the second planetary gear mechanism 8 and the first clutch 5 are provided, the hybrid power coupling system has five working modes, namely an engine direct-drive mode (with two gears, namely a first engine direct-drive mode and a second engine direct-drive mode), a hybrid drive mode (with four gears, namely a first hybrid drive mode, a second hybrid drive mode, a third hybrid drive mode and a fourth hybrid drive mode), a dual-motor pure electric drive mode (with four gears, namely a first dual-motor pure electric mode, a second dual-motor pure electric mode, a third dual-motor pure electric mode and a fourth dual-motor pure electric mode), a single-motor pure electric mode (with two gears, namely a first single-motor pure electric mode and a second single-motor pure electric mode), a series range-extended mode (with two gears, namely a first series range-extended mode and a second series range-extended mode);

the five operating modes are shown in table 1.

TABLE 1

The following modes, in conjunction with fig. 2 to 15, describe the power transmission route of the hybrid coupling system;

(1) first engine direct drive mode

The first clutch 5 is combined, the first brake 6 is combined, the second clutch 7 is separated, the second brake 9 is separated, the third clutch 10 is separated, the engine 1 is driven, and the generator 2 and the driving motor 3 do not work to establish a first engine direct-drive mode;

specifically, as shown in fig. 2, the power transmission route in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the vehicle speed requires a medium-low speed, the hybrid coupling system can enter a first engine direct-drive mode.

(2) Second Engine direct drive mode

The first clutch 5 is combined, the first brake 6 is separated, the second clutch 7 is combined, the second brake 9 is separated, the third clutch 10 is separated, the engine 1 is driven, and the generator 2 and the driving motor 3 do not work so as to establish a second engine direct drive mode;

specifically, as shown in fig. 3, the power transmission route in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the vehicle speed requires medium and high speed, the hybrid power coupling system can enter a second engine direct drive mode.

(3) First hybrid drive mode

Combining the first clutch 5, combining the first brake 6, separating the second clutch 7, combining the second brake 9, separating the third clutch 10, driving the engine 1, driving the generator 2 or generating electricity under the driving of the engine 1, and driving the motor 3 to establish a first hybrid driving mode;

specifically, as shown in fig. 4, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

the power transmission route 2 is: the generator 2- > the accelerating gear pair 14- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first decelerating gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheel 17,

the power transmission line 3 is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the speed increasing gear pair 14- > the generator 2,

the power transmission line 4 is: the drive motor 3- > the second sun gear shaft 81- > the second planet gear 84- > the second planet carrier 83- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the vehicle speed is required to be at medium-high speed, the hybrid coupling system can enter a first hybrid driving mode, and the engine 1 and the driving motor 3 drive the wheels 17 together. Meanwhile, when the power battery is full of electricity, the generator 2 can be used for driving the wheels 17, and when the power battery is insufficient of electricity, the engine 1 can be used for driving the generator 2 to generate electricity for the power battery.

(4) Second hybrid drive mode

Combining the first clutch 5, combining the first brake 6, separating the second clutch 7, separating the second brake 9, combining the third clutch 10, driving the engine 1, driving the generator 2 or generating electricity under the driving of the engine 1, and driving the motor 3 to establish a second hybrid driving mode;

specifically, as shown in fig. 5, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

the power transmission line 4 is: the driving motor 3- > the second planetary gear mechanism 8- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the vehicle speed is required to be at a medium-low speed, the hybrid coupling system can enter a second hybrid driving mode, and the engine 1 and the driving motor 3 drive the wheels 17 together. Meanwhile, when the power battery is full of electricity, the generator 2 can be used for driving the wheels 17, and when the power battery is insufficient of electricity, the engine 1 can be used for driving the generator 2 to generate electricity for the power battery.

(5) Third hybrid drive mode

The first clutch 5 is combined, the first brake 6 is separated, the second clutch 7 is combined, the second brake 9 is combined, the third clutch 10 is separated, the engine 1 is driven, the generator 2 is driven or generates electricity under the drive of the engine 1, and the motor 3 is driven to establish a third hybrid driving mode;

specifically, as shown in fig. 6, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

the power transmission route 2 is: the generator 2- > speed-up gear pair 14- > first planetary gear mechanism 4- > first speed-down gear pair 12- > first intermediate shaft 11- > differential mechanism 16- > wheels 17,

When the vehicle speed is required to be at medium-high speed, the hybrid coupling system can enter a third hybrid driving mode, and the engine 1 and the driving motor 3 drive the wheels 17 together. Meanwhile, when the power battery is full of electricity, the generator 2 can be used for driving the wheels 17, and when the power battery is insufficient of electricity, the engine 1 can be used for driving the generator 2 to generate electricity for the power battery.

(6) Fourth hybrid drive mode

Combining the first clutch 5, separating the first brake 6, combining the second clutch 7, separating the second brake 9, combining the third clutch 10, driving the engine 1, driving the generator 2 or generating electricity under the driving of the engine 1, and driving the motor 3 to establish a fourth hybrid driving mode;

specifically, as shown in fig. 7, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

When the vehicle speed is required to be at a medium-low speed, the hybrid coupling system can enter a fourth hybrid driving mode, and the engine 1 and the driving motor 3 drive the wheels 17 together. Meanwhile, when the power battery is full of electricity, the generator 2 can be used for driving the wheels 17, and when the power battery is insufficient of electricity, the engine 1 can be used for driving the generator 2 to generate electricity for the power battery.

(7) First two-motor pure electric drive mode

The first clutch 5 is separated, the first brake 6 is combined, the second clutch 7 is separated, the second brake 9 is combined, the third clutch 10 is separated, the engine 1 does not work, and the generator 2 and the driving motor 3 are driven together to establish a first double-motor pure electric mode;

specifically, as shown in fig. 8, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > the accelerating gear pair 14- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first decelerating gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheel 17,

the power transmission route 2 is: the drive motor 3- > the second sun gear shaft 81- > the second planet gear 84- > the second planet carrier 83- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a first two-motor pure electric driving mode and is suitable for medium and high vehicle speeds.

(8) Second double-motor pure electric drive mode

The first clutch 5 is separated, the first brake 6 is combined, the second clutch 7 is separated, the second brake 9 is separated, the third clutch 10 is combined, the engine 1 does not work, and the generator 2 and the driving motor 3 are driven together to establish a second double-motor pure electric mode;

specifically, as shown in fig. 9, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > the accelerating gear pair 14- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first decelerating gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheel 17,

the power transmission route 2 is: the driving motor 3- > the second planetary gear mechanism 8- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a second double-motor pure electric driving mode, and is suitable for medium and low speeds.

(9) Third dual-motor pure electric drive mode

The first clutch 5 is separated, the first brake 6 is separated, the second clutch 7 is combined, the second brake 9 is combined, the third clutch 10 is separated, the engine 1 does not work, and the generator 2 and the driving motor 3 are driven together to establish a third double-motor pure electric mode;

specifically, as shown in fig. 10, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > speed-up gear pair 14- > first planetary gear mechanism 4- > first speed-down gear pair 12- > first intermediate shaft 11- > differential mechanism 16- > wheels 17,

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a third dual-motor pure electric drive mode, and is suitable for medium and high vehicle speeds.

(10) Fourth dual-motor pure electric drive mode

The first clutch 5 is separated, the first brake 6 is separated, the second clutch 7 is combined, the second brake 9 is separated, the third clutch 10 is combined, the engine 1 does not work, and the generator 2 and the driving motor 3 are driven together to establish a fourth double-motor pure electric mode;

specifically, as shown in fig. 11, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > speed-up gear pair 14- > first planetary gear mechanism 4- > first speed-down gear pair 12- > first intermediate shaft 11- > differential mechanism 16- > wheels 17,

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a fourth dual-motor pure electric driving mode, and is suitable for medium and low vehicle speeds.

(11) First single-motor pure electric mode

The first clutch 5 is separated, the first brake 6 is separated, the second clutch 7 is separated, the second brake 9 is combined, the third clutch 10 is separated, the engine 1 and the generator 2 do not work, and the motor 3 is driven to establish a first single-motor pure electric mode;

specifically, as shown in fig. 12, the power transmission route in this drive mode is: the drive motor 3- > the second sun gear shaft 81- > the second planet gear 84- > the second planet carrier 83- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a first single-motor pure electric mode and is suitable for medium and high vehicle speeds.

(12) Second single motor electric only mode

The first clutch 5 is separated, the first brake 6 is separated, the second clutch 7 is separated, the second brake 9 is separated, the engine 1 and the generator 2 do not work in combination with the third clutch 10, and the motor 3 is driven to establish a second single-motor pure electric mode;

specifically, as shown in fig. 13, the power transmission route in this drive mode is: the driving motor 3- > the second planetary gear mechanism 8- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

When the electric quantity of the power battery is sufficient, the hybrid power coupling system can enter a second single-motor pure electric mode and is suitable for medium and low vehicle speeds.

(13) First series range extension mode

The first clutch 5 is combined, the first brake 6 is separated, the second clutch 7 is separated, the second brake 9 is combined, the third clutch 10 is separated, the engine 1 drives the generator 2 to generate electricity, and the motor 3 is driven to establish a first series range extending mode;

specifically, as shown in fig. 14, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the speed increasing gear pair 14- > the generator 2,

When the electric quantity of the power battery is insufficient, the hybrid power coupling system can enter a first series range extending mode and is suitable for medium and high vehicle speeds.

(14) Second series range extension mode

Combining the first clutch 5, the first brake 6, the second clutch 7 and the second brake 9, combining the third clutch 10, driving the generator 2 to generate power by the engine 1, and driving the motor 3 to drive so as to establish a second series range extending mode;

specifically, as shown in fig. 15, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the speed increasing gear pair 14- > the generator 2,

When the electric quantity of the power battery is insufficient, the hybrid power coupling system can enter a second series range extending mode and is suitable for medium and low vehicle speeds.

(15) Parking power generation mode

The first clutch 5 is separated, the first brake 6 is separated, the second clutch 7 is separated, the second brake 9 is separated, the engine 1 and the generator 2 do not work in combination with the third clutch 10, the driving motor 3 generates braking torque and induced current generated in a winding of the driving motor to charge the power battery so as to establish a parking power generation mode;

when the vehicle is braked, the hybrid power coupling system can enter a parking power generation mode, the driving motor 3 generates braking torque to brake the wheels 17, and meanwhile induced current generated in a winding of the driving motor 3 charges a power battery, so that the recovery of braking energy is realized.

In addition, if the setting of the first clutch 5 is cancelled, the control of the first clutch 5 may be cancelled, and the power path of each operating mode does not need to pass through the first clutch 5 correspondingly, and for avoiding repeated description, the control of the brake and the clutch and the power path in each operating mode of the scheme are not listed here.

If the second planetary gear mechanism 8 is not provided, the control of the second brake 9 and the third clutch 10 may be omitted, the power path of each working mode does not need to pass through the second planetary gear mechanism 8, the second brake 9 and the third clutch 10 correspondingly, and the working modes of the hybrid coupling system are reduced by the following gears correspondingly: for avoiding redundant description, the control of the brake and the clutch and the power route in each working mode of the scheme are not listed any more here;

if the first gear 121 and the second intermediate shaft 13 are eliminated and the second gear 122 is meshed with the first carrier 43, the path passing through the first reduction gear pair 12 is changed to pass through the second gear 122, and for avoiding redundant description, power paths in each operating mode of the scheme are not listed here.

Example two

When the generator 2 is connected to the first gear ring 45 and the second planetary gear mechanism 8 and the first clutch 5 are provided, the hybrid coupling system has five operating modes, such as an engine direct drive mode (having two gears: a first engine direct drive mode and a second engine direct drive mode), a hybrid drive mode (having two gears: a third hybrid drive mode and a fourth hybrid drive mode), a dual-motor pure electric drive mode (having two gears: a third dual-motor pure electric mode and a fourth dual-motor pure electric mode), a single-motor pure electric mode (having two gears: a first single-motor pure electric mode and a second single-motor pure electric mode), and a series range-extended mode (having two gears: a first series range-extended mode and a second series range-extended mode);

the five operation modes are shown in table 2.

TABLE 2

The embodiment can refer to fig. 1, fig. 2-3, fig. 6-7, fig. 10-11, and fig. 12-15, and the generator 2 in the drawings is connected with the first gear ring 45 instead;

(1) first engine direct drive mode

specifically, similar to fig. 2, the power transmission route in this drive mode is: the engine 1- > the first clutch 5- > the first sun gear shaft 41- > the first planet gear 44- > the first planet carrier 43- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

(2) Second Engine direct drive mode

specifically, similar to fig. 3, the power transmission route in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

(3) Third hybrid drive mode

specifically, similarly to fig. 6, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

the power transmission line 3 is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the speed-increasing gear pair 14- > the generator 2,

(4) Fourth hybrid drive mode

specifically, similarly to fig. 7, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the first reduction gear pair 12- > the first intermediate shaft 11- > the differential 16- > the wheels 17,

(5) Third dual-motor pure electric drive mode

specifically, similarly to fig. 10, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > speed-up gear pair 14- > first planetary gear mechanism 4- > first speed-down gear pair 12- > first intermediate shaft 11- > differential mechanism 16- > wheels 17,

(6) Fourth dual-motor pure electric drive mode

specifically, similarly to fig. 11, the power transmission route 1 in this drive mode is: the power transmission route 2 is: the generator 2- > speed-up gear pair 14- > first planetary gear mechanism 4- > first speed-down gear pair 12- > first intermediate shaft 11- > differential mechanism 16- > wheels 17,

(7) First single-motor pure electric mode

specifically, similarly to fig. 12, the power transmission route in this drive mode is: the drive motor 3- > the second sun gear shaft 81- > the second planet gear 84- > the second planet carrier 83- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

(8) Second single motor electric only mode

specifically, similar to fig. 13, the power transmission route in this drive mode is: the driving motor 3- > the second planetary gear mechanism 8- > the first intermediate shaft 11- > the differential 16- > the wheels 17.

(9) First series range extension mode

specifically, similarly to fig. 14, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the speed-increasing gear pair 14- > the generator 2,

(10) Second series range extension mode

specifically, similarly to fig. 15, the power transmission route 1 in this drive mode is: the engine 1- > the first clutch 5- > the first planetary gear mechanism 4- > the speed-increasing gear pair 14- > the generator 2,

(11) Parking power generation mode

If the second planetary gear mechanism 8 is not provided, the control of the second brake 9 and the third clutch 10 may be omitted, the power path of each working mode does not need to pass through the second planetary gear mechanism 8, the second brake 9 and the third clutch 10 correspondingly, and the working modes of the hybrid coupling system are reduced by the following gears correspondingly: a fourth hybrid driving mode, a fourth dual-motor pure electric mode, a second single-motor pure electric mode and a second series range extending mode, and for avoiding redundant description, control of a brake and a clutch and power routes in each working mode of the scheme are not listed one by one;

The embodiment of the utility model provides a vehicle is still provided, including the controller with connect in the power battery of controller, still include the hybrid coupled system that any preceding embodiment mentioned, engine 1, generator 2 and driving motor 3 are connected in the controller and are controlled by the controller.

By adopting the hybrid power coupling system, the engine 1 can drive the generator 2 to generate power for the power battery, the power battery can provide power for driving the wheels 17 for the generator 2 and the driving motor 3, the engine 1 can directly drive the wheels 17, the working state of the first brake 6 and the working state of the second clutch 7 are switched, and the gear of the wheel 17 driven by the engine 1 or the generator 2 can be controlled, so that various driving modes are realized, and higher transmission efficiency is obtained; the engine is in a direct drive mode, so that the energy conversion of machine-electricity and electricity-machine is avoided, and the transmission efficiency is improved; the dual-motor pure electric mode is realized, so that the power performance of the whole vehicle can be further improved, and the production cost of the whole vehicle is reduced; the engine 1 and the generator 2 share the speed reduction assembly, the structure is simple and compact, the number of parts is reduced, and the reduction of load is facilitated, so that the power performance of the whole vehicle can be further improved, and the production cost of the whole vehicle is reduced; in a hybrid driving mode, a dual-motor pure electric mode, a single-motor pure electric mode and a series range extending mode, the driving motor 3 is driven to avoid power interruption; the power battery effectively supplements the driving power required by the wheels 17 so as to more reasonably allocate the power of the internal combustion engine and keep the working state of the internal combustion engine free from or less influenced by road conditions. The internal combustion engine can always work in a set optimal state to improve the fuel efficiency of the whole vehicle, is suitable for HEV (hybrid electric vehicle) models and PHEV (hybrid electric vehicle) models, and has good platformization.

In one embodiment, five driving modes (an engine direct-drive mode, a hybrid driving mode, a dual-motor pure electric driving mode, a single-motor pure electric mode and a series range extending mode) of the hybrid power coupling system can be automatically switched according to the battery SOC value and the vehicle speed requirement, and a control flow for automatically switching the five driving modes comprises the following steps:

s1, the controller judges the relation between the battery SOC value and the first threshold value, or simultaneously judges the relation between the battery SOC value and the first threshold value and the relation between the vehicle speed and the second threshold value;

s2, switching the working mode of the hybrid power coupling system by the controller according to the judgment result of the step S1;

s3, when braking, the controller controls the driving motor 3 to generate braking torque and induce current in its windings to charge the power battery.

The first threshold is used for judging the SOC value of the battery, the second threshold is used for judging the vehicle speed, the present embodiment does not limit the value ranges of the first threshold and the second threshold, and can be freely set according to a specific control strategy, and the values of the first threshold and the second threshold are different under different control strategies. After the first threshold and the second threshold are set in the controller, the controller automatically performs the determination of step S1 and automatically switches between the five driving modes according to the determination result of step S1.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A hybrid power coupling system comprises an engine, a generator, a driving motor, a first planetary gear mechanism, a first brake and a second clutch, wherein the first planetary gear mechanism comprises a first sun gear shaft, a first sun gear, a first planet carrier, a first planet gear and a first gear ring, and is characterized by further comprising a first intermediate shaft;

the engine is connected with the first sun gear shaft;

the driving motor is connected with the first intermediate shaft;

the first intermediate shaft outputs power to wheels.

2. The hybrid coupling system of claim 1, further comprising a second planetary gear mechanism including a second sun gear shaft, a second sun gear, a second planet carrier, a second planet gear, and a second ring gear, a second brake, and a third clutch;

the second sun gear is fixedly arranged on the second sun gear shaft, the second planet carrier is connected to the first intermediate shaft, the second gear ring is connected with the second brake, and the second gear ring is connected with the second sun gear shaft through the third clutch;

the driving motor is connected with the second sun gear shaft.

3. The hybrid coupling system according to claim 1 or 2, further comprising a first clutch through which an output shaft of the engine is connected with the first sun gear shaft.

4. The hybrid coupling system according to claim 1, further comprising a second countershaft, a first gear disposed on the second countershaft and engaged with the first carrier, and a second gear fixedly disposed on the first countershaft, the first gear and the second gear being engaged with each other; or

The first gear is fixedly arranged on the first intermediate shaft and meshed with the first planet carrier.

5. The hybrid coupling system according to claim 1, wherein the first sun shaft is connected to the generator through a step-up gear pair;

the speed-increasing gear pair comprises a third gear and a fourth gear, the third gear is fixedly arranged on the first sun gear shaft, and the fourth gear is fixedly arranged on a rotating shaft of the generator.

6. The hybrid coupling system according to claim 1, wherein the engine is connected to one end of the first sun gear shaft, the first planet carrier is rotatably sleeved on the first sun gear shaft, and the generator is connected to the other end of the first sun gear shaft; the driving motor is connected to one end of the first intermediate shaft, and the other end of the first intermediate shaft serves as a power output end.

7. The hybrid coupling system of claim 1, wherein when the generator is connected to the first sun shaft:

the hybrid power coupling system is provided with a first engine direct-drive mode, a second engine direct-drive mode, a first hybrid drive mode, a third hybrid drive mode, a first double-motor pure electric mode, a third double-motor pure electric mode, a first single-motor pure electric mode and a first series range extending mode;

the second clutch is separated in combination with the first brake, the engine is driven, and the generator and the driving motor do not work so as to establish the first engine direct-drive mode;

disengaging the first brake, engaging the second clutch, the engine driving, the generator and the drive motor not operating to establish the second engine direct drive mode;

engaging the first brake, disengaging the second clutch, driving the engine, driving the generator or generating electricity under the driving of the engine, and driving the electric machine to establish the first hybrid driving mode;

disengaging the first brake, engaging the second clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the third hybrid driving mode;

engaging said first brake, disengaging said second clutch, deactivating said engine, and driving said generator and said drive motor together to establish said first dual-motor electric-only mode;

disengaging the first brake, engaging the second clutch, deactivating the engine, and driving the generator and the drive motor together to establish the third dual-motor electric-only mode;

disengaging the first brake, disengaging the second clutch, deactivating the engine and the generator, and driving the electric machine to establish the first single-motor electric-only mode;

disengaging the first brake, disengaging the second clutch, driving the generator to generate electricity by the engine, and driving the motor to establish the first series range extending mode;

when the generator is connected to the first ring gear:

the hybrid power coupling system is provided with a first engine direct-drive mode, a second engine direct-drive mode, a third hybrid drive mode, a third double-motor pure electric mode, a first single-motor pure electric mode and a first series range extending mode;

and disengaging the first brake and the second clutch, driving the generator to generate power by the engine, and driving the motor to establish the first series range extending mode.

8. The hybrid coupling system of claim 2, wherein when the generator is connected to the first sun shaft:

the hybrid power coupling system is provided with a first engine direct-drive mode, a second engine direct-drive mode, a first hybrid drive mode, a second hybrid drive mode, a third hybrid drive mode, a fourth hybrid drive mode, a first double-motor pure electric mode, a second double-motor pure electric mode, a third double-motor pure electric mode, a fourth double-motor pure electric mode, a first single-motor pure electric mode, a second single-motor pure electric mode, a first series range-extending mode and a second series range-extending mode;

engaging the first brake, disengaging the second clutch, disengaging the second brake, disengaging the third clutch, the engine is driven, and the generator and the drive motor are not operated to establish the first engine direct drive mode;

disengaging the first brake, engaging the second clutch, disengaging the second brake, disengaging the third clutch, the engine driving, the generator and the drive motor not operating to establish the second engine direct drive mode;

engaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the first hybrid driving mode;

engaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the second hybrid driving mode;

disengaging the first brake, engaging the second clutch, engaging the second brake, disengaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the third hybrid driving mode;

disengaging the first brake, engaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the fourth hybrid driving mode;

engaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, deactivating the engine, and driving the generator and the drive motor together to establish the first dual-motor electric-only mode;

engaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine is not operating, and the generator and the drive motor drive are jointly driven to establish the second dual-motor electric-only mode;

disengaging the first brake, engaging the second clutch, engaging the second brake, disengaging the third clutch, deactivating the engine, and driving the generator and the drive motor together to establish the third dual-motor electric-only mode;

disengaging the first brake, engaging the second clutch, disengaging the second brake, engaging the third clutch, the engine not operating, the generator and the drive motor driven in common to establish the fourth dual-motor electric-only mode;

disengaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, the engine and the generator are not operated, the drive motor is driven to establish the first single-motor electric-only mode;

disengaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine and the generator not operating, the drive motor driving to establish the second single-motor electric-only mode;

disengaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, the engine driving the generator to generate electricity, the drive motor driving to establish the first series range extending mode;

disengaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving the generator to generate electricity, the drive motor driving to establish the second series range extending mode;

when the generator is connected to the first ring gear:

the hybrid power coupling system is provided with a first engine direct-drive mode, a second engine direct-drive mode, a third hybrid drive mode, a fourth hybrid drive mode, a third double-motor pure electric mode, a fourth double-motor pure electric mode, a first single-motor pure electric mode, a second single-motor pure electric mode, a first series range-extending mode and a second series range-extending mode;

and separating the first brake, the second clutch and the second brake, combining the third clutch, driving the generator to generate power by the engine, and driving the motor to establish the second series range-extending mode.

9. The hybrid coupling system according to claim 3, wherein when the generator is connected to the first sun gear shaft and the second planetary gear mechanism is not provided:

engaging the first clutch, engaging the first brake, disengaging the second clutch, the engine driving, the generator and the drive motor not operating to establish the first engine direct drive mode;

engaging the first clutch, disengaging the first brake, engaging the second clutch, the engine driving, the generator and the drive motor not operating to establish the second engine direct drive mode;

engaging the first clutch, engaging the first brake, disengaging the second clutch, driving the engine, driving the generator or generating electricity under the driving of the engine, and driving the motor to establish the first hybrid driving mode;

engaging the first clutch, disengaging the first brake, engaging the second clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving to establish the third hybrid driving mode;

disengaging the first clutch, engaging the first brake, disengaging the second clutch, deactivating the engine, and driving the generator and the drive motor together to establish the first dual-motor electric-only mode;

disengaging the first clutch, disengaging the first brake, engaging the second clutch, deactivating the engine, and driving the generator and the driving motor together to establish the third dual-motor electric-only mode;

disengaging the first clutch, disengaging the first brake, disengaging the second clutch, the engine and the generator are not operated, and the drive motor is driven to establish the first single-motor electric-only mode;

engaging the first clutch, disengaging the first brake, disengaging the second clutch, the engine driving the generator to generate electricity, the drive motor driving to establish the first series range extending mode;

when the generator is connected with the first sun gear shaft and the second planetary gear mechanism is provided:

engaging the first clutch, engaging the first brake, disengaging the second clutch, disengaging the second brake, disengaging the third clutch, the engine being driven, the generator and the drive motor being inoperative to establish the first engine direct drive mode;

engaging the first clutch, disengaging the first brake, engaging the second clutch, disengaging the second brake, disengaging the third clutch, the engine driving, the generator and the drive motor not operating to establish the second engine direct drive mode;

engaging the first clutch, engaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, driving the engine, driving the generator or generating electricity under the driving of the engine, driving the electric machine to establish the first hybrid driving mode;

engaging the first clutch, engaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving, to establish the second hybrid driving mode;

engaging the first clutch, disengaging the first brake, engaging the second clutch, engaging the second brake, disengaging the third clutch, driving the engine, driving the generator or generating electricity under the driving of the engine, driving the electric machine to establish the third hybrid driving mode;

engaging the first clutch, disengaging the first brake, engaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving, the generator driving or generating electricity under the driving of the engine, the driving motor driving, to establish the fourth hybrid driving mode;

disengaging the first clutch, engaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, deactivating the engine, and driveably co-driving the generator and the drive motor to establish the first dual-motor electric-only mode;

disengaging the first clutch, engaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine not operating, the generator and the drive motor drive jointly driven to establish the second dual-motor electric-only mode;

disengaging the first clutch, disengaging the first brake, engaging the second clutch, engaging the second brake, disengaging the third clutch, the engine not operating, the generator and the drive motor driven in common to establish the third dual-motor electric-only mode;

the first clutch is separated, the first brake is separated, the second clutch is combined, the second brake is separated, the third clutch is combined, the engine does not work, and the generator and the driving motor are driven together to establish the fourth double-motor pure electric mode;

disengaging the first clutch, disengaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, the engine and the generator not operating, the drive motor driving to establish the first single-motor electric-only mode;

disengaging the first clutch, disengaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine and the generator not operating, the drive motor driving to establish the second single-motor electric-only mode;

engaging the first clutch, disengaging the first brake, disengaging the second clutch, engaging the second brake, disengaging the third clutch, the engine driving the generator to generate electricity, the drive motor driving to establish the first series range extending mode;

engaging the first clutch, disengaging the first brake, disengaging the second clutch, disengaging the second brake, engaging the third clutch, the engine driving the generator to generate electricity, the drive motor driving to establish the second series range extending mode;

when the generator is connected with the first gear ring and the second planetary gear mechanism is not arranged:

when the generator is connected with the first gear ring and the second planetary gear mechanism is arranged:

and combining the first clutch, separating the first brake, separating the second clutch, separating the second brake, combining the third clutch, driving the generator to generate power by the engine, and driving the motor to establish the second series range extending mode.

10. A vehicle comprising a controller and a battery connected to the controller, characterized by further comprising the hybrid coupling system of any one of claims 1-9, the engine, the generator, and the drive motor being connected to and controlled by the controller.