CN207809036U - 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; a transmission, the transmission includes a dual clutch, a gear set for the first gear, a gear set for the second gear, and a synchronizer, and the output shaft of the engine is connected to the input end of the dual clutch , the first output shaft of the dual clutch is connected to the power shaft of the first motor, and the second output shaft of the dual clutch is selectively connected to the first gear set or the second gear set through the synchronizer a second gear set; 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.

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, which has a simple structure and 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; a transmission, the transmission includes a dual clutch, a first gear set, a second gear set, and a synchronizer The output shaft of the engine is connected to the input end of the dual clutch, the first output shaft of the dual clutch is connected to the power shaft of the first motor, and the second output shaft of the dual clutch is selectively connected through the synchronizer connected to the first gear set or the second gear set; an output portion for outputting the power transmitted by the first gear set or the second gear set to drive the vehicle .

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 second output shaft Selectably connected to the first drive gear or the second drive gear through the synchronizer.

Optionally, the transmission further includes a transmission output shaft, the transmission output shaft is connected to the first driven gear, the transmission output shaft is connected to the second driven gear, and the output part is used to output The power transmitted by the transmission output shaft to drive the vehicle.

Optionally, the synchronizer is located between the first driving gear and the second driving gear, and the dual clutch is located on the same side of the first gear set and the second gear set.

Optionally, the system further includes a second motor, and the output part is also used to output power from the second motor to drive the vehicle.

Optionally, the first driving gear and the second driving gear are loosely sleeved on the second output shaft of the dual clutch, and the power shaft of the second motor is coaxially connected with the second output shaft.

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

Optionally, the power shaft of the second motor is coaxially connected with the output shaft of the transmission.

In the present disclosure, by setting the dual clutch, the power of the engine can be selectively provided to the wheels through the dual clutch for driving or to the first motor for power generation, and by setting the synchronizer, the engine can realize two gears drive, simple structure and easy operation.

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;

FIG. 3 is a schematic schematic diagram 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, an output part, and a first motor 2 . 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 double clutch 4, a synchronizer 10, a first gear gear set, and a second gear gear set. Wherein, as shown in Figure 1, the double clutch 4 has an input end 41, a first output shaft 42 and a second output shaft 43, the output shaft of the engine 1 is connected with the input end 41 of the double clutch 4, and the first output of the double clutch 4 The shaft 42 is connected with the first motor 2 , and the second output shaft 43 of the dual clutch 4 is selectively connected to the first gear set or the second gear set through the synchronizer 10 . The dual clutch 4 is located on the same side of the first gear set and the second gear set, and the first output shaft 42 of the dual clutch 4 is vacantly sleeved on the second output shaft 43, so that the structure of the hybrid drive system is more compact , easy to arrange on the vehicle.

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 is disconnected from both 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 is connected to the first output shaft 42 and the second One of the output shafts 43 is in transmission connection, so that the power transmitted from the input end can be output through one of the first output shaft 42 and the second output shaft 43 .

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.

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.

The first driving gear 5 and the second driving gear 7 are idly sleeved on the second output shaft 43 of the double clutch 4 . The second output shaft 43 is also provided with a synchronizer 10, the synchronizer 10 is located between the first driving gear 5 and the second driving gear 7, and the synchronizer 10 can selectively connect the first driving gear 5 or the second driving gear 7 Engages with the second output shaft 43 . For example, in the embodiment shown in FIG. 1 , the coupling sleeve of the synchronizer 10 can be moved to the left to engage the first driving gear 5 , and can be moved to the right to engage the second driving gear 7 .

Speed changer can also comprise speed changer output shaft 9, and first driven gear 6 and second driven gear 8 all are installed on the speed changer output shaft 9, make speed changer output shaft 9 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 9 .

In the present disclosure, when the engine 1 needs to be used to drive the wheels, the input end 41 of the control dual clutch 4 is connected to the second output shaft 43, and the power of the engine 1 passes through the dual clutch 4, the synchronizer 10, and the first gear in sequence. Group or second gear gear set, transmission output shaft 9 is transmitted to the output. By controlling the synchronizer 10 to engage with the gear set of the first gear or the gear set of the second gear, the power output of the two gears of the engine can be realized, and the structure is simple and the operation is convenient.

Driven by the engine 1 , the first motor 2 can generate electricity. The power shaft of the first motor 2 can be directly connected with the first output shaft 42 of the double clutch 4, or can be connected through an intermediate transmission mechanism. In the first embodiment shown in FIG. 1 , the first output shaft 42 of the dual clutch 4 is directly connected to the power shaft of the first motor 2 .

The output portion is configured to transmit power output by the transmission to wheels of the vehicle. For example, the output unit may include the output gear 14 , or may include the output gear 14 and the differential 16 . The output gear 14 is installed on the transmission output shaft 9 and rotates synchronously with the transmission output shaft 9 , and the output gear 14 meshes with the final reduction gear 15 of the differential 16 . The function of the differential 16 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. A final reduction gear 15 is arranged on the differential 16 , and the final reduction gear 15 can be arranged on a housing of the differential 16 , for example.

In the second embodiment shown in FIG. 2 , the hybrid drive system further includes a second motor 3 , and the output part is also used to output power from the second motor 3 to drive the vehicle. The second electric machine 3 can be used not only as an electric motor for driving the vehicle, but also as a generator for generating electricity.

The second electric machine 3 can be coupled into the hybrid drive system in various ways. In the second embodiment shown in FIG. 2 , the power shaft of the second motor 3 is coaxially connected with the second output shaft 43 of the dual clutch 4 , so that the power shaft of the second motor 3 is synchronized with the second output shaft 43 rotate.

Further, in the second embodiment shown in FIG. 2 , a clutch 13 may be provided between the power shaft of the second motor 3 and the second output shaft 43 of the dual clutch 4 . By setting the clutch 13, the second motor 3 can be disengaged from the second output shaft 43 by controlling the clutch 13 to be disengaged in the fuel-only driving condition, so as to reduce the load and improve the working efficiency.

Fig. 3 is a schematic schematic diagram of a third embodiment according to the present disclosure. The difference between the third embodiment and the second embodiment mainly lies in that: in the third embodiment, the power shaft of the second motor 3 is connected with the transmission output shaft 9 through the clutch 13 .

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

1. The second motor is in pure electric working condition. The coupling sleeve of the control synchronizer 10 is engaged with one of the first driven gear 6 and the second driven gear 8, the second output shaft 43 of the control double clutch 4 is disconnected from the input end 41, and the second motor 3 passes through the first Gear set or second gear set, transmission output shaft 9, output gear 14, final reduction gear 15, differential 16 drive wheels. This working condition is mainly used for starting, medium and low speed or urban roads, etc., 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. Parallel working condition. The engine 1, the first motor 2 and the second motor 3 all drive the wheels, and the input end 41 of the dual clutch 4 is connected to the first output shaft 42 and the second output shaft 43, and the speed of the two motors can be adjusted to match the output shaft of the transmission 9 angular velocity. The advantage of this working condition is that the engine 1 , the first electric motor 2 and the second electric motor 3 are driven simultaneously, so that the maximum power performance can be exerted.

3. Working conditions in series. The input end 41 of the control dual clutch 4 is connected to the first output shaft 42, the sleeve of the synchronizer 10 is engaged with the first driving gear 5 or the second driving gear 7, the engine 1 drives the first motor 2 to generate electricity, and the second motor 3 Drive the wheels.

4. Engine independent driving condition. The input end 41 of the control double clutch 4 is connected with the second output shaft 43, the input end 41 of the double clutch 4 is disconnected from the first output shaft 42, the first motor 2 and the second motor 3 are not working, and the synchronizer 10 can be used to Realize gear switching.

5. Engine driving and charging conditions. On the basis of the independent driving condition of the engine 1 , the input end 41 of the control dual clutch 4 is connected to the first output shaft 42 , and the engine 1 simultaneously drives the first motor 2 to generate electricity.

6. Braking/deceleration feedback working conditions. The second motor 3 brakes the wheels and generates electricity. 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.

7. 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 16 through the dual clutch 4 and the gear set to drive the wheels, and the second motor 3 drives the wheels through the differential 16 . 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 (9)

1. a kind of hybrid electric drive system, which is characterized in that including：

Engine (1)；

First motor (2)；

Speed changer, the speed changer include double clutch (4), the first gear gear set, the second gear gear set, synchronizer (10), the output shaft of the engine (1) is connect with the input terminal (41) of double clutch (4), and the first of the double clutch (4) Output shaft (42) is connected to the line shaft of the first motor (2), and the second output shaft (43) of the double clutch (4) passes through institute It states synchronizer (10) and is optionally connected to the first gear gear set or the second gear gear set；

Output section, the output section be used to export the power that is transmitted by the first gear gear set or the second gear gear set with Drive vehicle.

2. system according to claim 1, which is characterized in that the first gear gear set includes the first driving gear (5) and the first driven gear (6), the second gear gear set include the second driving gear (7) and the second driven gear (8), The synchronizer (10) is selectively by first driving gear (5) or the second driving gear (7) and second output shaft (43) it engages.

3. system according to claim 2, which is characterized in that the speed changer further includes transmission output shaft (9), described Transmission output shaft (9) and first driven gear (6) connection, the transmission output shaft (9) and second driven tooth (8) connection is taken turns, the output section is for exporting the power transmitted by the transmission output shaft (9) to drive vehicle.

4. system according to claim 2, which is characterized in that the synchronizer (10) is located at first driving gear (5) between the second driving gear (7), the double clutch (4) is located at the first gear gear set and the second shift gear The same side of group, the first output shaft (42) empty set of the double clutch (4) is on the second output shaft (43).

5. system according to claim 2, which is characterized in that the system also includes the second motor (3), the output sections Power of the output from second motor (3) is additionally operable to drive vehicle.

6. system according to claim 5, which is characterized in that first driving gear (5) and the second driving gear (7) On the second output shaft (43) of the double clutch (4), the line shaft of second motor (3) exports empty set with described second Axis (43) is coaxially connected.

7. system according to claim 6, which is characterized in that the system also includes clutch (13), second electricity The line shaft of machine (3) is connect with second output shaft (43) by the clutch (13).

8. system according to claim 5, which is characterized in that the line shaft of second motor (3) and the speed changer Output shaft (9) is coaxially connected.

9. a kind of vehicle, which is characterized in that include the hybrid electric drive system according to any one of claim 1-8.