CN207809040U - Hybrid electric drive system and vehicle - Google Patents

Abstract

The present disclosure relates to a hybrid drive system and a vehicle. The system includes: an engine; a first motor, driven by the engine to generate electricity; a transmission, the transmission includes a dual clutch, a gear set for a first gear, and a gear set for a second gear. The dual clutch is located between the first gear set and the second gear set, and the output shaft of the engine is selectively connected to the first gear set or the second gear through the dual clutch bit gear set; a second motor, the power shaft of the second motor is coaxially connected with the output shaft of the engine, and the transmission is located between the engine and the second motor; an output part, the output part is used for The power transmitted by the first gear set or the second gear set is output to drive the vehicle.

Description

Hybrid drive systems and vehicles

technical field

The present disclosure relates to a hybrid drive system and a vehicle.

Background technique

In today's world, human beings are facing two major challenges: energy scarcity and environmental degradation. Traditional automobiles are increasingly plagued by the oil crisis. Energy conservation and environmental protection have gradually become the development theme of the automobile industry. In recent years, hybrid electric vehicles with two different power sources to achieve reduced fuel consumption and emissions have been developed and applied, and put into commercial production and introduced to the market.

A hybrid drive system is generally composed of an engine, a generator, an electric motor, and a power supply. The engine and the power supply jointly provide power for the vehicle, which results in a complex structure, a large space occupation, and a high cost.

Utility model content

The purpose of the present disclosure is to provide a hybrid drive system with a simple structure, which can realize two-speed drive of the engine.

In order to achieve the above object, the present disclosure provides a hybrid drive system, including: an engine; a first motor, driven by the engine to generate electricity; a transmission, the transmission includes a dual clutch, a first gear gear set, the second gear set, the dual clutch is located between the first gear set and the second gear set, the output shaft of the engine is selectively connected to the The first gear gear set or the second gear gear set; the second motor, the power shaft of the second motor is coaxially connected with the output shaft of the engine, and the transmission is located between the engine and the second motor Between; the output part, the output part is used to output the power transmitted by the first gear set or the second gear set to drive the vehicle.

Optionally, the transmission includes a transmission output shaft, the transmission output shaft is connected to the first gear set, the transmission output shaft is connected to the second gear set, and the transmission output shaft The output transmits power.

Optionally, the first gear set includes a first driving gear and a first driven gear, the second gear set includes a second driving gear and a second driven gear, and the transmission output shaft and The first driven gear is connected, and the transmission output shaft is connected with the second driven gear.

Optionally, the dual clutch includes an input end, a first output shaft and a second output shaft, the power shaft of the second motor is connected to the input end, and the first output shaft is connected to the first driving gear connected, the second output shaft is connected with the second driving gear.

Optionally, the dual clutch is an electromagnetic dual clutch, which includes a shaft sleeve, a yoke, a first driving disc, a second driving disc, a first driven disc, a second driven disc, a first Coil and the second coil, the shaft sleeve is fixed on the power shaft of the second motor, the yoke is fixedly connected to the middle part of the shaft sleeve, and the first driving disc is slidably connected to the shaft sleeve At one end, the second driving disc is slidably connected to the other end of the bushing, the first driven disc is fixed on the first driving gear and rotates with the first driving gear, and the second driven disc The moving disk is fixed on the second driving gear and rotates following the second driving gear, the first coil is fixed on the side of the yoke close to the first driving disk, and the second coil is fixed on The side of the yoke close to the second driving disk.

Optionally, the position where the transmission output shaft is connected to the output part is located between the first driven gear and the second driven gear.

Optionally, the input end of the dual clutch is a housing of the dual clutch, the power shaft of the second motor passes through the housing to be coaxially connected with the output shaft of the engine, and the housing Keyed connection with the power shaft of the second motor, the first driving gear and the second driving gear are sleeved on the power shaft of the second motor, the first output shaft and the second output shaft of the dual clutch Empty sleeve on the power shaft of the second motor.

Optionally, the first motor is located between the engine and the transmission, one end of the power shaft of the first motor is connected to the output shaft of the engine, and the other end of the power shaft of the first motor is connected to the The power shaft of the second motor is connected.

Optionally, the system includes a clutch, and the other end of the power shaft of the first motor is connected to the power shaft of the second motor through the clutch.

Optionally, the clutch is integrated in the first electric motor.

Optionally, the output shaft of the engine is connected to the power shaft of the first electric motor through a gear increasing mechanism.

Optionally, the gear speed-up mechanism includes a first speed-up gear and a second speed-up gear that mesh with each other, the first speed-up gear is connected to the power shaft of the first motor, and the second speed-up gear The gear is connected to the output shaft of the engine, wherein the number of teeth of the first speed-up gear is smaller than the number of teeth of the second speed-up gear.

Optionally, the system includes a clutch, and the output shaft of the engine is connected to the power shaft of the second electric motor through the clutch.

Optionally, the output shaft of the engine is connected to the first motor through a belt transmission mechanism. In the present disclosure, through the combination of the dual clutch and the gear sets of the two gears, the switching of the two gears can be realized by controlling the dual clutch, and the structure is simple and the operation is convenient.

The present disclosure also provides a vehicle including the hybrid drive system as described above.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the description, together with the following specific embodiments, are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the attached picture:

FIG. 1 is a schematic schematic diagram of a hybrid drive system according to a first embodiment of the present disclosure;

FIG. 2 is a schematic schematic diagram of a hybrid drive system according to a second embodiment of the present disclosure.

3 is a schematic schematic diagram of a hybrid drive system according to a third embodiment of the present disclosure;

4 is a schematic cross-sectional view of an electromagnetic dual clutch in a hybrid drive system according to a third embodiment of the present disclosure;

Fig. 5 is a schematic diagram of first gear transmission of a hybrid drive system according to a third embodiment of the present disclosure;

Fig. 6 is a schematic diagram of second gear transmission of a hybrid drive system according to a third embodiment of the present disclosure.

Detailed ways

Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

FIG. 1 is a schematic schematic diagram of a hybrid drive system according to a first embodiment of the present disclosure. As shown in FIG. 1 , a hybrid drive system according to a first embodiment of the present disclosure includes an engine 1 , a transmission, and an output unit. The power of the engine 1 is transmitted to the output part through the transmission, and the output part outputs the power to drive the vehicle.

The transmission includes a dual clutch 4, a first gear gear set, and a second gear gear set. The dual clutch 4 is arranged between the first gear gear set and the second gear gear set. The output shaft of the engine 1 passes through the dual clutch 4 It can be selectively connected to the first gear set or the second gear set.

Wherein, in the first embodiment shown in Fig. 1, the double clutch 4 has an input end 41, a first output shaft 42 and a second output shaft 43, and the output shaft of the engine 1 is connected with the input end 41 of the double clutch 4, The first output shaft 42 of the dual clutch 4 is connected to the first gear set, and the second output shaft 43 of the dual clutch 4 is connected to the second gear set.

The input end 41 of double clutch 4 can be the housing of double clutch 4, and double clutch 4 also comprises two driven disks, and the first output shaft 42 of double clutch 4 can be connected with one of them driven disk by key, double clutch 4 The second output shaft 43 can be connected with another driven plate through a key. Generally, the housing of the dual clutch 4 can be disconnected from the two driven discs, that is, the input end 41 is disconnected from the first output shaft 42 and the second output shaft 43 . When one of the driven disks needs to be engaged, the housing can be controlled to engage with the corresponding driven disk to rotate synchronously, and the driven disk drives the corresponding output shaft to rotate synchronously, that is, the input end 41 is connected to the first output shaft 42 and the second output shaft. One of the two output shafts 43 is transmission-connected, so that the power transmitted from the input end 41 can be output through one of the first output shaft 42 and the second output shaft 43 .

In particular, the housing of the double clutch 4 can also be engaged with two driven discs at the same time, that is, the input end 41 can also be drivingly connected with the first output shaft 42 and the second output shaft 43 at the same time, so that the output from the input end 41 Power can be output through the first output shaft 42 and the second output shaft 43 at the same time.

It should be understood that the specific engagement state of the dual clutch 4 is affected by the control strategy. For those skilled in the art, the control strategy can be adaptively set according to the actual required transmission mode, so that the input and the two output shafts can Switch between full disconnect and drive connection of the input to one of the two output shafts.

In the first embodiment of the present disclosure, through the combination of the dual clutch 4 and the two gear sets, the switching of the two gears can be realized by controlling the dual clutch 4 . Specifically, when the transmission is required to input power in the first gear, the housing of the dual clutch 4 can be controlled to engage with the driven plate corresponding to the first output shaft 42, so that the input end 41 of the dual clutch 4 is connected to the first output shaft. shaft 42 transmission connection; when the transmission is required to input power in the second gear, the housing of the dual clutch 4 can be controlled to engage with the driven plate corresponding to the second output shaft 43, so that the input end 41 of the dual clutch 4 is connected to the second output shaft 43 The output shaft 43 is in transmission connection.

The first gear gear set includes the first driving gear 5 and the first driven gear 6. The first driving gear 5 and the first driven gear 6 can be directly meshed, or both can be meshed with the intermediate gear, so that the gear can be transmitted through the intermediate gear. connect. The second gear gear set includes a second driving gear 7 and a second driven gear 8. The second driving gear 7 and the second driven gear 8 can be directly meshed, or both can be meshed with an intermediate gear, so that transmission through the intermediate gear connect. The first gear set may be a low gear set, and the second gear set may be a high gear set, but the disclosure is not limited thereto. In other embodiments, the first gear set may be a high gear set. The gear set, the second gear set can be a low gear set.

Speed changer can also comprise speed changer output shaft 10, and first driven gear 6 and second driven gear 8 all are installed on the speed changer output shaft 10, make speed changer output shaft 10 and first driven gear 6 and second driven gear 8 synchronized rotation. Regardless of whether the power from the first gear set or the second gear set is output externally through the transmission output shaft 10 .

The hybrid drive system also includes a first electric machine 2 and a second electric machine 3 . The first motor 2 can generate electricity driven by the engine 1, and can also be used as an electric motor to drive the vehicle. Likewise, the second motor 3 can be used to drive the vehicle and also generate electricity.

In the first embodiment shown in Figure 1, the power shaft of the second motor 3 passes through the housing of the dual clutch 4 to be coaxially connected with the output shaft of the engine 1, and the housing of the dual clutch 4 is connected to the second motor 3 The power shaft is connected by a key, the first driving gear 5 and the second driving gear 7 are idly sleeved on the power shaft of the second motor 3, and the first output shaft 42 and the second output shaft 43 of the double clutch 4 are also idly sleeved on the second On the power shaft of the second motor 3. In this way, the structure of the hybrid drive system is more compact, the axial length is smaller, and it is convenient to arrange on the whole vehicle.

In the first embodiment shown in Figure 1, the first motor 2 is located between the engine 1 and the transmission, one end of the power shaft of the first motor 2 is connected with the output shaft of the engine 1, and the other end is connected with the output shaft of the second motor 3. The power shafts are connected, and the rotation speed of the first motor 2 is equal to the rotation speed of the engine 1 . Further, the other end of the power shaft of the first motor 2 can be connected with the power shaft of the second motor 3 through a clutch 11 . By setting the clutch 11, when the engine 1 drives the first motor 2 to generate electricity, the clutch 11 can be controlled to disengage to separate the transmission and the second motor 3 from the system, thereby reducing load and improving power generation efficiency.

The output portion is configured to transmit power output by the transmission to wheels of the vehicle. For example, the output may include an output gear 20 and a differential 21 . The output gear 20 is installed on the transmission output shaft 10 and rotates synchronously with the transmission output shaft 10 , and the output gear 20 meshes with the final reduction gear 22 of the differential 21 . The function of the differential 21 is to make the left and right wheels roll at different angular velocities when the vehicle is turning or driving on an uneven road surface, so as to ensure pure rolling motion between the wheels on both sides and the ground. The differential gear 21 is provided with a final reduction gear 22 , and the final reduction gear 22 may be arranged on the housing of the differential gear 21 , for example. In order to reduce the axial size of the hybrid drive system, preferably, the output gear 20 may be located between the first driven gear 6 and the second driven gear 8 .

Fig. 2 is a schematic schematic diagram of a second embodiment according to the present disclosure. The difference between the second embodiment and the first embodiment is that in the second embodiment, the power shaft of the first motor 2 is connected with the output shaft of the engine 1 through a gear speed-up mechanism, so that the first motor 2 The rotational speed of the engine 1 is greater than that of the engine 1, so that the engine 1 can be matched with the high-efficiency region when the first electric machine 2 is used as a generator, so as to improve the power generation efficiency. Specifically, a first speed-up gear 17 is installed on the power shaft of the first motor 2, a second speed-up gear 18 is installed on the output shaft of the engine 1, and the first speed-up gear 17 meshes with the second speed-up gear 18, The number of teeth of the first speed-up gear 17 is smaller than the number of teeth of the second speed-up gear 18 . In other unshown embodiments, the output shaft of the engine 1 may also be connected with the power shaft of the first electric motor 2 through a belt transmission mechanism. Specifically, the belt transmission mechanism may include a large pulley, a small pulley and a transmission belt, wherein the output shaft of the engine 1 is connected to the large pulley, and the power shaft of the first motor 2 is connected to the small pulley, so that the first motor 2 The rotational speed of is greater than the rotational speed of engine 1.

Fig. 3 is a schematic schematic diagram of a third embodiment according to the present disclosure. The difference between the third embodiment and the first embodiment is that in the third embodiment, the dual clutch 4 is an electromagnetic dual clutch, and the first driving gear 5 and the second driving gear 7 pass through the electromagnetic dual clutch. The clutch is selectively connected to the power shaft 31 of the second electric machine 3 . Specifically, as shown in Figure 4, the electromagnetic dual clutch includes a shaft sleeve 151, a yoke 152, a first driving disc 153, a second driving disc 154, a first driven disc 155, a second driven disc 156, a coil support 159. The first coil 157 and the second coil 158, the sleeve 151 is fixed on the power shaft 31 of the second motor 3, the yoke 152 is fixedly connected to the middle of the sleeve 151, the first active The disk 153 is slidably connected to one end of the shaft sleeve 151, the second driving disk 154 is slidably connected to the other end of the shaft sleeve 151, and the first driven disk 155 is fixed on the first driving gear 5 And follow the first driving gear 5 to rotate, the second driven plate 156 is fixed on the second driving gear 7 and follow the rotation of the second driving gear 7, the first coil 157 is fixed on the The yoke 152 is close to the side of the first driving disc 153, the second coil 158 is fixed on the side of the yoke 152 close to the second driving disc 154, and the coil support 159 connects the external power supply to the first coil. 157 or the second coil 158 is turned on.

In one embodiment, as shown in FIG. 4, the first driving disc 153 includes a first armature 1531 and a first inner friction plate 1532 fixedly connected to the first armature 1531, and the second driving disc 154 includes a second armature 1541 and a second inner friction plate 1542 fixedly connected to the second armature 1541, the first armature 1531 and the second armature 1541 are slidably connected to the shaft sleeve 151 through a spline; The first driven plate 155 includes a first gear connector 1551 and a first outer friction plate 1552, the first gear connector 1551 is fixedly connected with the first driving gear 5, and the first outer friction plate 1552 is fixed Connected to the first gear connector 1551 and cooperate with the first inner friction plate 1532, the second driven disc 156 includes a second gear connector 1561 and a second outer friction plate 1562, the second The gear connecting member 1561 is fixedly connected with the second driving gear 7 , and the second outer friction plate 1562 is fixedly connected with the second gear connecting member 1561 and cooperates with the second inner friction plate 1542 .

As shown in Figure 5, when the first gear needs to be engaged, the first coil 157 is turned on, and due to the magnetic force, the first armature 1531 and the first inner friction plate 1532 fixed on the first armature 1531 slide towards the direction of the yoke 152 , the first inner friction plate 1532 and the first outer friction plate 1552 rub against each other, and the rotational movement of the power shaft 31 of the engine 1 and/or the second motor 3 passes through the shaft sleeve 151, the first armature 1531, and the first inner friction plate 1532 in sequence. , the first outer friction plate 1552, the first gear connector 1551, the first driving gear 5, and the first driven gear 6 are transmitted to the transmission output shaft 10, driving the output gear 14 fixed on the transmission output shaft 10 to rotate, and the power Transmission to the final reduction gear 16 meshing with the output gear 14, and then through the differential 15, the power is transmitted to the left half shaft and the right half shaft connected to the differential 15, the vehicle drives in first gear, and the power transmission path of first gear As shown by the thick solid line in Figure 5.

As shown in Figure 6, when the second gear needs to be engaged, the second coil 158 is turned on, and due to the magnetic force, the second armature 1541 and the second inner friction plate 1542 fixed on the second armature 1541 slide towards the direction of the yoke 152 , the second inner friction plate 1542 and the second outer friction plate 1562 rub against each other, and the rotational movement of the power shaft 31 of the engine 1 and/or the second motor 3 passes through the shaft sleeve 151, the second armature 1541, and the second inner friction plate 1542 in turn. , the second outer friction plate 1562, the second gear connector 1561, the second driving gear 7, and the second driven gear 8 are transmitted to the transmission output shaft 10, driving the output gear 14 fixed on the transmission output shaft 10 to rotate, and the power Transmission to the main reduction gear 16 meshing with the output gear 14, and then through the differential 15, the power is transmitted to the left half shaft and the right half shaft connected to the differential 15, the vehicle is driven in second gear, and the power transmission path of the second gear As shown by the thick solid line in Figure 6.

The hybrid drive system of the present disclosure may have the following operating conditions;

1. The second motor 3 is in pure electric working condition. Both the input terminal and the two output shafts of the control dual clutch 4 are disconnected, the engine 1 and the first motor 2 are not working, and the second motor 3 drives the wheels through the differential 21 . This working condition is mainly used for situations such as constant speed or urban road surface, and the battery has a relatively high power. The advantage of this working condition is that the second motor 3 is directly driven, the transmission chain is the shortest, and the parts involved in the work are the least, so that the highest transmission efficiency and the minimum noise can be achieved.

2. Double-motor pure electric working condition. The second motor 3 is the main power source with full power output; the first motor 2 is the auxiliary power source with limited power output. The input controlling the dual clutch 4 is connected to one of the two output shafts. The rotational speeds of the two electric motors are adjusted to ensure that the angular velocity transmitted to the output shaft 10 of the transmission is consistent. This working condition is mainly used for acceleration, climbing, overtaking, high-speed and other heavy load occasions, and the battery power is high. Compared with single-motor drive, this working condition has better power performance, better economy and lower noise than hybrid drive, and the typical application that can highlight its advantages is the steep slope (winding mountain road) Congested traffic.

3. Parallel working conditions. The engine 1, the first motor 2 and the second motor 3 all drive wheels. The speed of the two motors can be adjusted to match the angular velocity of the output shaft 10 of the transmission. The advantage of this working condition is that the three-engine engine 1 , the first motor 2 and the second motor 3 are driven simultaneously, which can exert the maximum power performance.

4. Working conditions in series. Both the input terminal and the two output shafts of the control dual clutch 4 are disconnected, the engine 1 drives the first motor 2 to generate electricity, and the second motor 3 drives the wheels.

5. Engine 1 is driven independently. The input end of the control dual clutch 4 is connected to one of the two output shafts, the first motor 2 and the second motor 3 are not working, and the gear switching can be realized through the dual clutch 4 .

6. Engine 1 driving charging condition. On the basis of the independent driving condition of the engine 1, the first motor 2 is simultaneously driven to generate electricity.

7. Braking/deceleration feedback working condition. The second electric machine 3 generates electricity when the vehicle is braked. This working condition is mainly used for vehicle downhill, braking or deceleration. The advantage of this working condition is that it can maximize the feedback energy when decelerating or braking.

8. Mixed working conditions. On the one hand, the engine 1 drives the first motor 2 to generate electricity, and on the other hand, the power is transmitted to the differential 21 through the dual clutch 4 and the gear set to drive the wheels, and the second motor 3 drives the wheels through the differential 21 . This working condition is mainly used for acceleration, climbing and other large load occasions and the situation of low power. The advantage of this working condition is that the full power of the engine 1 can be exerted, which not only ensures the power performance of the vehicle, but also simultaneously generates power to keep the battery power.

The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple modifications all belong to the protection scope of the present disclosure.

In addition, it should be noted that the various specific technical features described in the above specific implementation manners may be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not further described in this disclosure.

In addition, various implementations of the present disclosure can also be combined in any way, as long as they do not violate the idea of the present disclosure, they should also be regarded as the content disclosed in the present disclosure.

Claims (15)

1. A hybrid drive system, characterized in that, comprising: engine (1); A first motor (2), the first motor (2) generates electricity under the drive of the engine (1); Transmission, the transmission includes a dual clutch (4), a first gear set, a second gear set, the dual clutch (4) is located between the first gear set and the second gear set During, the output shaft of the engine (1) is selectively connected to the first gear set or the second gear set through the dual clutch (4); The second motor (3), the power shaft of the second motor (3) is coaxially connected with the output shaft of the engine (1), and the transmission is located between the engine (1) and the second motor (3) between; An output part, the output part is used to output the power transmitted by the first gear set or the second gear set to drive the vehicle. 2. The system according to claim 1, characterized in that, the transmission comprises a transmission output shaft (10), the transmission output shaft (10) is connected with the first gear gear set, and the transmission output shaft (10) is connected with the second gear gear set, and the transmission output shaft (10) transmits power to the output part. 3. The system according to claim 2, characterized in that the first gear set comprises a first driving gear (5) and a first driven gear (6), and the second gear set comprises The second driving gear (7) and the second driven gear (8), the transmission output shaft (10) is connected with the first driven gear (6), and the transmission output shaft (10) is connected with the first driven gear (6). Two driven gears (8) are connected. 4. The system according to claim 3, characterized in that, the double clutch (4) comprises an input end (41), a first output shaft (42) and a second output shaft (43), and the second motor (3) The power shaft (31) is connected with the input end (41), the first output shaft (42) is connected with the first driving gear (5), and the second output shaft (43) is connected with the first driving gear (5). The second driving gear (7) is connected. 5. The system according to claim 4, characterized in that, the input end (41) of the dual clutch (4) is the housing of the dual clutch (4), and the power of the second motor (3) The shaft passes through the housing to be coaxially connected with the output shaft of the engine (1), the housing is keyed to the power shaft of the second motor (3), and the first driving gear (5) and the second driving gear (7) are sleeved on the power shaft of the second motor (3), and the first output shaft (42) and the second output shaft (43) of the dual clutch (4) are sleeved on the on the power shaft of the second motor (3). 6. The system according to claim 3, characterized in that, the double clutch (4) is an electromagnetic double clutch, and the electromagnetic double clutch includes a shaft sleeve (151), a magnetic yoke (152), a first drive disc (153), the second driving disc (154), the first driven disc (155), the second driven disc (156), the first coil (157) and the second coil (158), the axle sleeve (151 ) is fixed on the power shaft (31) of the second motor (3), the yoke (152) is fixedly connected to the middle part of the bushing (151), and the first driving disc (153) is slidably connected At one end of the bushing (151), the second driving disc (154) is slidably connected to the other end of the bushing (151), and the first driven disc (155) is fixed on the first On the driving gear (5) and follow the rotation of the first driving gear (5), the second driven plate (156) is fixed on the second driving gear (7) and follow the second driving gear ( 7) rotation, the first coil (157) is fixed on the side of the yoke (152) close to the first driving disk (153), and the second coil (158) is fixed on the yoke ( 152) a side close to the second driving disc (154). 7. The system according to claim 3, characterized in that, the position on the transmission output shaft (10) connected with the output part is located at the first driven gear (6) and the second driven gear ( 8) Between. 8. The system according to claim 1, characterized in that, the first motor (2) is located between the engine (1) and the transmission, and one end of the power shaft of the first motor (2) is connected to the The output shaft of the engine (1) is connected, and the other end of the power shaft of the first motor (2) is connected with the power shaft of the second motor (3). 9. The system according to claim 8, characterized in that the system comprises a clutch (11), the other end of the power shaft of the first motor (2) is connected to the power shaft of the second motor (3) Connected via said clutch (11). 10. System according to claim 9, characterized in that the clutch (11) is integrated in the first electric machine (2). 11. The system according to claim 1, characterized in that, the output shaft of the engine (1) is connected with the power shaft of the first electric motor (2) through a gear increasing mechanism. 12. The system according to claim 11, characterized in that, the gear speed-up mechanism comprises a first speed-up gear (17) and a second speed-up gear (18) meshing with each other, and the first speed-up gear (17) is connected with the power shaft of the first motor (2), and the second speed-up gear (18) is connected with the output shaft of the engine (1), wherein the first speed-up gear (17 ) number of teeth is less than the number of teeth of the second speed-up gear (18). 13. The system according to claim 11, characterized in that the system comprises a clutch (11), the output shaft of the engine (1) and the power shaft of the second electric machine (3) pass through the clutch ( 11) Connected. 14. The system according to claim 1, characterized in that the output shaft of the engine (1) is connected with the first electric motor (2) through a belt transmission mechanism. 15. A vehicle, characterized by comprising the hybrid drive system according to any one of claims 1-14.