Vehicle transmission and hybrid power system

Abstract

The invention relates to the technical field of vehicles, in particular to a vehicle transmission and a hybrid power system.The vehicle transmission comprises a differential gear device, the differential gear device comprises a first component, a second component and a third component which are in transmission connection, and the third component is in transmission connection with a first motor; the first torque transmission mechanism is configured to enable the engine to be in selective transmission connection with the first component, and the first torque transmission mechanism is further configured to enable the first component to be in selective transmission connection with the output shaft; the second torque transmission mechanism is configured to enable the engine to be in selective transmission connection with the second component, and the second torque transmission mechanism is further configured to enable the second component to be in selective transmission connection with the output shaft; the output shaft is connected with the second motor. According to the invention, the vehicle can meet the performance required in different working modes.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a vehicle transmission and a hybrid power system. Background Art

[0002] The sales of hybrid vehicles are increasing rapidly in the market due to their high fuel efficiency and good maneuverability. Hybrid vehicles have a hybrid power system, which usually includes an electric motor and a hybrid transmission (DHT). The choice of the hybrid system has a profound positive impact on the performance characteristics of the vehicle.

[0003] According to the number of motors, hybrid systems can be roughly divided into single motor type, dual motor type and multi-motor type, among which dual motor type is becoming more and more common. One motor is used as a drive motor to drive the vehicle, and the other motor is used as a generator to convert the engine's mechanical energy into electrical energy to charge the vehicle battery, and the battery's power is supplied to the drive motor. During the operation of the vehicle, when the battery SOC is low, the engine can run in parallel with the drive motor, charging the battery through the generator and / or directly providing energy to the drive motor.

[0004] Therefore, the engine can operate within its most efficient operating range, thereby achieving the best fuel economy state. In addition, when the drive motor is insufficient due to low battery SOC or close to the physical limit, the engine can also be used to directly provide driving force to the wheels. Since the drive motor can compensate for torque during the gear shifting process, the number of gears in the hybrid transmission can be greatly reduced, thereby reducing the weight, complexity and cost of the transmission system. However, due to the greatly reduced number of gears in the hybrid power transmission, the engine cannot be used at very low vehicle speeds and is usually driven only by the drive motor. Under conditions requiring a large amount of continuous driving energy, especially under high load, trailer use, high road slope conditions, etc., the battery SOC is very low under these conditions, and the performance is limited if only the drive motor is driven, or the engine can be used for driving, but due to the gear limitations of the hybrid transmission, the performance is not as good as the drive motor, and it gives customers a feeling of reduced performance. Summary of the invention

[0005] In order to solve the above technical problems, the present disclosure provides a vehicle transmission and a hybrid power system, so that the vehicle can meet the performance required in different working modes.

[0006] In a first aspect, an embodiment of the present disclosure provides a vehicle transmission, comprising: a differential gear device, the differential gear device comprising a first component, a second component and a third component that are transmission-connected, the differential gear device being a planetary gear set, the planetary gear set comprising a sun gear, a planet carrier and a ring gear, the first component being one of the planet carrier and the sun gear, the third component being the other of the planet carrier and the sun gear, the second component being the ring gear, and the third component being transmission-connected to a first motor; a first torque transmission mechanism, the first torque transmission mechanism being configured to selectively transmission-connect the engine to the first component, the first torque transmission mechanism being further configured to selectively transmission-connect the first component to an output shaft; a second torque transmission mechanism, the second torque transmission mechanism being configured to selectively transmission-connect the engine to the second component, the second torque transmission mechanism being further configured to selectively transmission-connect the second component to the output shaft; the output shaft being connected to a second motor.

[0007] In some embodiments, the vehicle transmission also includes a first gear set, a second gear set, a third gear set and a fourth gear set; the first torque transmission mechanism is also configured to selectively drive the first component to the output shaft by combining with the first gear set, and the second torque transmission mechanism is also configured to selectively drive the second component to the output shaft by combining with the first gear set, and the first gear set is drive-connected to the output shaft; the second gear set is connected between the first motor and the third component; the third gear set is connected between the second motor and the output shaft; and the fourth gear set is connected between the output shaft and the drive shaft.

[0008] In some embodiments, the vehicle transmission further includes an engine shaft, the engine and the second torque transmitting mechanism are connected via the engine shaft, and the engine and the first torque transmitting mechanism are connected via the engine shaft.

[0009] In some embodiments, a transmission gear set is disposed between the first torque transmission mechanism and the output shaft and the first component.

[0010] In a second aspect, the present disclosure further provides a hybrid power system, including an engine, a first motor, a second motor and a transmission, wherein the transmission is a vehicle transmission provided by the present disclosure.

[0011] In some embodiments, the hybrid power system realizes different operating modes by controlling the switching of the operating states of the first torque transmission mechanism and the second torque transmission mechanism, and the operating modes include low speed high load mode, low speed low load mode, high speed mode and pure electric mode.

[0012] In some embodiments, in the low speed and high load mode, the first torque transmission mechanism controls the engine to be connected to the first component, and the first torque transmission mechanism controls the first component to be disconnected from the output shaft, and the second torque transmission mechanism controls the engine to be disconnected from the second component, and the second torque transmission mechanism controls the second component to be connected to the output shaft.

[0013] In some embodiments, in the low speed and low load mode, the first torque transmission mechanism controls the engine to be connected to the first component, and the first torque transmission mechanism controls the first component to be disconnected from the output shaft, and the second torque transmission mechanism controls the engine to be connected to the second component, and the second torque transmission mechanism controls the second component to be disconnected from the output shaft.

[0014] In some embodiments, in the high speed mode, the first torque transmission mechanism controls the engine to be disconnected from the first component, and the first torque transmission mechanism controls the first component to be connected to the output shaft, and the second torque transmission mechanism controls the engine to be connected to the second component, and the second torque transmission mechanism controls the second component to be disconnected from the output shaft.

[0015] In some embodiments, in the pure electric mode, the first torque transmission mechanism controls the engine to be disconnected from the first component, and the first torque transmission mechanism controls the first component to be connected to the output shaft, and the second torque transmission mechanism controls the engine to be disconnected from the second component, and the second torque transmission mechanism controls the second component to be connected to the output shaft.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0017] The vehicle transmission provided by the present disclosure can realize the performance required by the vehicle in different working modes through the differential gear device, the first torque transmission mechanism and the second torque transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 is a schematic diagram of a hybrid power system with a vehicle transmission provided by the present disclosure;

[0021] Figure 2 yes Figure 1 A schematic diagram of a hybrid power system with a vehicle transmission;

[0022] Figure 3 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a low speed and high load mode;

[0023] Figure 4is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a low speed and low load mode;

[0024] Figure 5 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a high-speed mode;

[0025] Figure 6 It is a schematic diagram of the operation of a vehicle having the hybrid power system provided by the present invention in a pure electric mode. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0028] Figure 1 is a schematic diagram of a hybrid power system with a vehicle transmission provided by the present disclosure, Figure 2 yes Figure 1 A schematic diagram of a hybrid power system with a vehicle transmission, see Figure 1 and Figure 2 , this embodiment provides a vehicle transmission, the vehicle transmission comprising:

[0029] The differential gear device 10 includes a first component 11, a second component 12, and a third component 13 that are transmission-connected. The differential gear device 10 is a planetary gear set, and the planetary gear set includes a sun gear S, a planet carrier C, and a ring gear R. The first component 11 is one of the planet carrier C and the sun gear S, the third component 13 is the other of the planet carrier C and the sun gear S, the second component 12 is the ring gear R, and the third component 13 is transmission-connected to the first motor MG1.

[0030] A first torque transmission mechanism 20, the first torque transmission mechanism 20 is configured to selectively transmit and connect the engine Engine to the first component 11, and the first torque transmission mechanism 20 is also configured to selectively transmit and connect the first component 11 to the output shaft 90;

[0031] A second torque transmission mechanism 30, the second torque transmission mechanism 30 is configured to selectively transmit the engine Engine to the second component 12, and the second torque transmission mechanism 30 is also configured to selectively transmit the second component 12 to the output shaft 90;

[0032] The output shaft 90 is connected to the second motor MG2.

[0033] Specifically, the present embodiment provides a vehicle transmission, which includes a differential gear device 10, a first torque transmission mechanism 20, and a second torque transmission mechanism 30. The differential gear device 10 includes a first component 11, a second component 12, and a third component 13, and the third component 13 is connected to the first motor MG1 by transmission. The differential gear device 10 is a planetary gear set, and the planetary gear set includes a sun gear S, a planet carrier C, and a ring gear R. The first component 11 is one of the planet carrier C and the sun gear S, the third component 13 is the other of the planet carrier C and the sun gear S, and the second component 12 is the ring gear R. That is, when the first component 11 is the planet carrier C, the third component 13 is the sun gear S, and when the first component 11 is the sun gear S, the third component 13 is the planet carrier C.

[0034] The first torque transmission mechanism 20 is configured to selectively transmit the engine Engine to the first component 11, and the first torque transmission mechanism 20 is also configured to transmit the first component 11 to the output shaft 90, that is, the engine Engine can be controlled to be disconnected or connected with the first component C through the first torque transmission mechanism 20, and the first component 11 can be controlled to be disconnected or connected with the output shaft 90 through the first torque transmission mechanism 20. The second torque transmission mechanism 30 is configured to selectively transmit the engine Engine to the second component 12, and the second torque transmission mechanism 30 is also configured to selectively transmit the second component 12 to the output shaft 90, that is, the engine Engine can be controlled to be disconnected or connected with the second component R through the second torque transmission mechanism 30, and the second component 12 can be controlled to be disconnected or connected with the output shaft 90 through the second torque transmission mechanism 30. Therefore, the performance required by the vehicle in different working modes can be achieved through the differential gear device 10, the first torque transmission mechanism 20 and the second torque transmission mechanism 30.

[0035] It should be noted that Figure 1 and Figure 2 It is exemplarily shown in the figure that the first component 11 of the vehicle transmission is a planet carrier C and the third component 13 is a sun gear S. In other embodiments of the present disclosure, the first component 11 may also be a sun gear S. In this case, the third component 13 is a planet carrier C, which will not be described in detail in the present disclosure.

[0036] Optionally, the first motor MG1 and the second motor MG2 are both connected to a battery. The first motor MG1 and the second motor MG2 both have the functions of generating electricity and motoring.

[0037] Optionally, the first torque transmission mechanism 20 and the second torque transmission mechanism 30 may be clutches. Thus, the engine Engine and the first component 11 may be connected or disconnected through the first torque transmission mechanism 20, and the first component 11 and the output shaft 90 may be connected or disconnected through the first torque transmission mechanism 20. Thus, the engine Engine and the second component 12 may be connected or disconnected through the second torque transmission mechanism 30, and the second component 12 and the output shaft 90 may be connected or disconnected through the second torque transmission mechanism 30.

[0038] Continue to refer Figure 1 and Figure 2 , in some optional embodiments, the vehicle transmission further includes a first gear set 40, a second gear set 50, a third gear set 60 and a fourth gear set 70;

[0039] The first torque transmission mechanism 20 is further configured to selectively drive-connect the first component 11 with the output shaft 90 by combining with the first gear set 40, and the second torque transmission mechanism 30 is further configured to selectively drive-connect the second component 12 with the output shaft 90 by combining with the first gear set 40, and the first gear set 40 is drive-connected with the output shaft 90. That is, the first component 11 can be disconnected or connected with the first gear set 40 by the first torque transmission mechanism 20, and the second component 12 can be disconnected or connected with the first gear set 40 by the second torque transmission mechanism 30.

[0040] The second gear set 50 is connected between the first motor MG1 and the third member 13;

[0041] The third gear set 60 is connected between the second motor MG2 and the output shaft 90;

[0042] The fourth gear set 70 is connected between the output shaft 90 and the drive shaft 80. That is, the output shaft 90 is connected to the fourth gear set 70, the fourth gear set 70 is connected to the drive shaft 80, and the drive shaft 80 is connected to the wheel Wheel, so as to transmit power to the wheel Wheel, thereby realizing the driving of the vehicle.

[0043] It should be noted that the embodiment of the present disclosure exemplarily shows that the vehicle transmission includes a first gear set 40, a second gear set 50, a third gear set 60 and a fourth gear set 70. In other embodiments of the present disclosure, the gear sets in the vehicle transmission can also be arranged in other ways, and the gear ratio of each gear set can be set according to requirements, which will not be elaborated in the present disclosure.

[0044] Continue to refer Figure 1 and Figure 2Optionally, the vehicle transmission further includes an engine shaft 100, and the engine Engine and the first torque transmission mechanism 20 are connected through the engine shaft 100, thereby realizing the connection between the engine Engine and the first torque transmission mechanism 20. The engine Engine and the second torque transmission mechanism 30 are also connected through the engine shaft 100, thereby realizing the connection between the engine Engine and the second torque transmission mechanism 30.

[0045] Optionally, a transmission gear set is provided between the first torque transmission mechanism 20 and the output shaft 90 and the first component 11. That is, a transmission gear set 110 is provided between the first torque transmission mechanism 20 and the output shaft 90, and between the first torque transmission mechanism 20 and the first component C, so as to realize the connection between the first torque transmission mechanism 20 and the output shaft 90, and between the first torque transmission mechanism 20 and the first component C. Optionally, the gear ratio of the transmission gear set 110 is 1:1.

[0046] Optionally, the gears connecting the engine Engine, the first motor MG1, the second motor MG2 and the differential gear device 10 may be spline gears.

[0047] Continue to refer Figure 1 and Figure 2 The present disclosure also provides a hybrid power system, including an engine Engine, a first motor MG1, a second motor MG2 and a transmission, wherein the transmission is a vehicle transmission provided by the present disclosure.

[0048] Specifically, the present disclosure further provides a hybrid power system, including an engine Engine, a first motor MG1, a second motor MG2, and a transmission, wherein the transmission is a vehicle transmission provided by the present disclosure.

[0049] The vehicle transmission includes a differential gear device 10, a first torque transmission mechanism 20 and a second torque transmission mechanism 30. The differential gear device 10 includes a first component 11, a second component 12 and a third component 13, and the third component 13 is connected to the first motor MG1 by transmission. The differential gear device 10 is a planetary gear set, and the planetary gear set includes a sun gear S, a planet carrier C and a ring gear R. The first component 11 is one of the planet carrier C and the sun gear S, the third component 13 is the other of the planet carrier C and the sun gear S, and the second component 12 is the ring gear R. That is, when the first component 11 is the planet carrier C, the third component 13 is the sun gear S, and when the first component 11 is the sun gear S, the third component 13 is the planet carrier C.

[0050] The first torque transmission mechanism 20 is configured to selectively transmit the engine Engine to the first component 11, and the first torque transmission mechanism 20 is also configured to transmit the first component 11 to the output shaft 90, that is, the engine Engine can be controlled to be disconnected or connected with the first component C through the first torque transmission mechanism 20, and the first component 11 can be controlled to be disconnected or connected with the output shaft 90 through the first torque transmission mechanism 20. The second torque transmission mechanism 30 is configured to selectively transmit the engine Engine to the second component 12, and the second torque transmission mechanism 30 is also configured to selectively transmit the second component 12 to the output shaft 90, that is, the engine Engine can be controlled to be disconnected or connected with the second component R through the second torque transmission mechanism 30, and the second component 12 can be controlled to be disconnected or connected with the output shaft 90 through the second torque transmission mechanism 30. Therefore, the performance required by the vehicle in different working modes can be achieved through the differential gear device 10, the first torque transmission mechanism 20 and the second torque transmission mechanism 30.

[0051] Continue to refer Figure 1 and Figure 2 The hybrid system realizes different working modes by controlling the switching of the working states of the first torque transmission mechanism 20 and the second torque transmission mechanism 30. The working modes include a low-speed high-load mode, a low-speed low-load mode, a high-speed mode and a pure electric mode.

[0052] Specifically, the first torque transmission mechanism 20 can be used to control the engine Engine to be disconnected from or connected to the first component C, and the first torque transmission mechanism 20 can be used to control the first component 11 to be disconnected from or connected to the output shaft 90, the second torque transmission mechanism 30 can be used to control the engine Engine to be disconnected from or connected to the second component R, and the second component 12 can be controlled to be disconnected from or connected to the output shaft 90 by the second torque transmission mechanism 30, that is, different working modes can be achieved by controlling the switching of the working states of the first torque transmission mechanism 20 and the second torque transmission mechanism 30, and the working modes include low-speed and high-load mode, low-speed and low-load mode, high-speed mode and pure electric mode, and the vehicle can meet the performance required in different working modes.

[0053] Figure 3 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a low speed and high load mode, Figure 4 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a low speed and low load mode, Figure 5 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a high-speed mode, Figure 6 is a schematic diagram of an operation of a vehicle having a hybrid power system provided by the present disclosure in a pure electric mode, with reference to Figure 3-Figure 6The working mode of the vehicle can be expressed as a plurality of working modes according to the combination of the differential gear device 10, the first torque transmission mechanism 20 and the second torque transmission mechanism 30 in the vehicle transmission. The working mode of the vehicle can include a low speed high load mode, a low speed low load mode, a high speed mode and a pure electric mode. Figure 3-Figure 6 The arrows in the middle correspond to the direction of power flow.

[0054] Hereinafter, a method according to an exemplary embodiment of the present invention will be described. Figure 3-Figure 6 working mode.

[0055] refer to Figure 3 In some optional embodiments, in the low-speed and high-load mode, the first torque transmission mechanism 20 controls the engine Engine to be connected to the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be disconnected from the output shaft, the second torque transmission mechanism 30 controls the engine Engine to be disconnected from the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be connected to the output shaft. At this time, part of the power of the engine Engine is converted into electrical energy through the first motor MG1, and the rest of the power of the engine Engine is transmitted to the output shaft. In this mode, the power flow can generate a higher continuous drive shaft torque, and when necessary, the maximum power can be continuously output in a wider range of low vehicle speeds, so as to meet the high load requirements of the vehicle at low speeds without affecting the normal driving of the vehicle.

[0056] refer to Figure 4 In some optional embodiments, in the low speed and low load mode, the first torque transmission mechanism 20 controls the engine Engine to be connected to the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be disconnected from the output shaft, and the second torque transmission mechanism 30 controls the engine Engine to be connected to the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be disconnected from the output shaft. At this time, the power of the engine Engine is converted into electrical energy by the first motor MG1, and then transmitted to the second motor MG2, and finally transmitted to the output shaft. In this mode, the first component 11, the second component 12 and the third component 13 rotate at the same speed, and all the power of the engine Engine is absorbed by the first motor MG1. In this mode, in the high speed range, affected by the power generation power of the first motor MG1, it is impossible to generate a higher continuous drive shaft torque and a higher output power. However, in normal driving (low speed and low load), the drive shaft torque and output power can meet the normal driving needs and effectively improve the efficiency of the engine Engine.

[0057] refer to Figure 5In high-speed mode, the first torque transmission mechanism 20 controls the engine Engine to be disconnected from the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be connected to the output shaft, the second torque transmission mechanism 30 controls the engine Engine to be connected to the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be disconnected from the output shaft. At this time, part of the power of the engine Engine is converted into electrical energy through the first motor MG1, and the remaining power is transmitted to the output shaft. Compared with the series mode, in this mode, a higher continuous drive shaft torque and a higher output power can be generated in a wider high-speed range. In normal driving (high speed and low load), the drive shaft torque and output power can meet normal driving needs, and the engine Engine is in efficient operation in this mode.

[0058] refer to Figure 6 In pure electric mode, the first torque transmission mechanism 20 controls the engine Engine to be disconnected from the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be connected to the output shaft, the second torque transmission mechanism 30 controls the engine Engine to be disconnected from the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be connected to the output shaft. At this time, the power generated by the first motor MG1 and the second motor MG2 is transmitted to the output shaft. The first component 11, the second component 12 and the third component 13 rotate at the same speed, and the power of the first motor MG1 is transmitted to the output shaft. In this mode, a higher continuous drive shaft torque can be generated within a wider high-speed range, that is, in pure electric mode, the high load requirements of the vehicle at high speed can be met without affecting the normal driving of the vehicle.

[0059] Furthermore, in the pure electric mode, both the first motor MG1 and the second motor MG2 generate power and transmit it to the output shaft, which can generate a higher continuous drive shaft torque compared to a single motor drive.

[0060] The vehicle transmission in the hybrid system provided by the embodiment of the present disclosure can achieve the performance required by the vehicle in different working modes through the differential gear device 10, the first torque transmission mechanism 20 and the second torque transmission mechanism 30.

[0061] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0062] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0063] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0064] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle transmission, characterized in that: include: A differential gear device, the differential gear device comprising a first component, a second component and a third component which are transmission-connected, the differential gear device is a planetary gear set, the planetary gear set comprises a sun gear, a planet carrier and a ring gear, the first component is one of the planet carrier and the sun gear, the third component is the other of the planet carrier and the sun gear, the second component is the ring gear, and the third component is transmission-connected to the first motor; a first torque transmission mechanism, the first torque transmission mechanism being configured to selectively drive connect the engine with the first component, the first torque transmission mechanism being further configured to selectively drive connect the first component with an output shaft; a second torque transmission mechanism, the second torque transmission mechanism being configured to selectively drive connect the engine with the second component, the second torque transmission mechanism being further configured to selectively drive connect the second component with the output shaft; The output shaft is connected to the second motor.

2. The vehicle transmission according to claim 1, characterized in that: The vehicle transmission also includes a first gear set, a second gear set, a third gear set, and a fourth gear set; The first torque transmission mechanism is further configured to selectively drive the first member to the output shaft by combining with the first gear set, and the second torque transmission mechanism is further configured to selectively drive the second member to the output shaft by combining with the first gear set, and the first gear set is drive-connected to the output shaft; The second gear set is connected between the first motor and the third component; The third gear set is connected between the second motor and the output shaft; The fourth gear set is connected between the output shaft and the drive shaft.

3. The vehicle transmission according to claim 1, characterized in that: The vehicle transmission also includes an engine shaft, the engine and the second torque transmitting mechanism are connected through the engine shaft, and the engine and the first torque transmitting mechanism are connected through the engine shaft.

4. The vehicle transmission according to claim 1, characterized in that: A transmission gear set is disposed between the first torque transmission mechanism, the output shaft and the first component.

5. A hybrid power system, characterized in that: It comprises an engine, a first motor, a second motor and a transmission, wherein the transmission is the vehicle transmission according to any one of claims 1-4.

6. The hybrid power system according to claim 5, characterized in that: The hybrid power system realizes different working modes by controlling the switching of the working states of the first torque transmission mechanism and the second torque transmission mechanism, and the working modes include a low-speed high-load mode, a low-speed low-load mode, a high-speed mode and a pure electric mode.

7. The hybrid power system according to claim 6, characterized in that: In the low speed and high load mode, the first torque transmission mechanism controls the engine to be connected to the first component, and the first torque transmission mechanism controls the first component to be disconnected from the output shaft, the second torque transmission mechanism controls the engine to be disconnected from the second component, and the second torque transmission mechanism controls the second component to be connected to the output shaft.

8. The hybrid power system according to claim 6, characterized in that: In the low speed and low load mode, the first torque transmission mechanism controls the engine to be connected to the first component, and the first torque transmission mechanism controls the first component to be disconnected from the output shaft, and the second torque transmission mechanism controls the engine to be connected to the second component, and the second torque transmission mechanism controls the second component to be disconnected from the output shaft.

9. The hybrid power system according to claim 6, characterized in that: In the high speed mode, the first torque transmission mechanism controls the engine to be disconnected from the first component, and the first torque transmission mechanism controls the first component to be connected to the output shaft, the second torque transmission mechanism controls the engine to be connected to the second component, and the second torque transmission mechanism controls the second component to be disconnected from the output shaft.

10. The hybrid power system according to claim 6, characterized in that: In the pure electric mode, the first torque transmission mechanism controls the engine to be disconnected from the first component, and the first torque transmission mechanism controls the first component to be connected to the output shaft, and the second torque transmission mechanism controls the engine to be disconnected from the second component, and the second torque transmission mechanism controls the second component to be connected to the output shaft.

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