Vehicle transmission and hybrid system

Abstract

The present disclosure relates to the technical field of vehicles, and particularly relates to a vehicle transmission and hybrid power system, comprising: a differential gear device, the differential gear device comprising a first component, a second component and a third component in driving connection, the third component being in driving connection with a first motor; a first torque transmission mechanism, the first torque transmission mechanism being configured to selectively drive connect an engine with the first component, and 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, and the second torque transmission mechanism being further configured to selectively drive connect the second component with the output shaft; and the output shaft being connected with a second motor. The present disclosure can realize that the vehicle meets the required performance in different working modes.

Description

TECHNICAL FIELD

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

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

[0003] According to the number of electric motors, the hybrid power system can be roughly divided into single motor type, double motor type and multi motor type, and the double motor type is becoming more and more common. One electric motor is used as a drive motor to drive the vehicle, and the other electric motor is used as a generator to convert the mechanical energy of the engine into electrical energy to charge the vehicle battery, and the battery supplies power to the drive motor. During the operation of the vehicle, when the battery SOC is low, the engine can operate in parallel with the drive motor, and the battery is charged through the generator and / or the drive motor is directly supplied with energy.

[0004] Therefore, the engine can operate in its most efficient operating range, thereby achieving the best fuel economy state. In addition, when the drive motor is insufficient in energy 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 perform torque compensation during gear shifting, the number of gears of the hybrid transmission can be greatly reduced, thereby reducing the weight, complexity and cost of the transmission system. However, due to the great reduction in the number of gears of the hybrid transmission, the engine cannot be used at very low vehicle speeds, and is usually driven only by the drive motor, and under conditions requiring a large amount of continuous driving energy, especially under high load, trailer use, high road slope working conditions, etc., the SOC of the battery is very low, and the performance of the drive motor is limited, or the engine can be used for driving, but due to the limitation of the gear position of the hybrid transmission, the performance is not as good as that of the drive motor, and the customer feels a decrease in performance. SUMMARY

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

[0006] In a first aspect, the embodiments of the present disclosure provide a vehicle transmission, comprising: a differential gear device, the differential gear device comprising a first component, a second component and a third component in driving connection, 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, the third component being in driving connection with a first motor; a first torque transmission mechanism, the first torque transmission mechanism being configured to selectively connect an engine with the first component, and to selectively connect the first component with an output shaft; a second torque transmission mechanism, the second torque transmission mechanism being configured to selectively connect the engine with the second component, and to selectively connect the second component with the output shaft; the output shaft being connected with a second motor.

[0007] In some embodiments, the vehicle transmission further comprises 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 connect the first component with the output shaft by combining with the first gear set, the second torque transmission mechanism is further configured to selectively connect the second component with the output shaft by combining with the first gear set, the first gear set being in driving connection with the output shaft; the second gear set being connected between the first motor and the third component; the third gear set being connected between the second motor and the output shaft; the fourth gear set being connected between the output shaft and a drive shaft.

[0008] In some embodiments, the vehicle transmission further comprises an engine shaft, the engine and the second torque transmission mechanism being connected through the engine shaft, the engine and the first torque transmission mechanism being connected through the engine shaft.

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

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

[0011] In some embodiments, 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, the working modes including a low-speed high-load mode, a low-speed low-load mode, a high-speed mode and a pure electric mode.

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

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

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

[0016] The technical solution provided by the present disclosure has the following advantages compared with the prior art:

[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 DRAWINGS

[0018] The drawings incorporated into the specification and forming a part thereof, 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 technical solutions in the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

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

[0021] Figure 2 is Figure 1 is a schematic diagram of a hybrid power system with a vehicle transmission provided by the present disclosure;

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

[0023] Figure 4is a running schematic diagram of a vehicle with the hybrid power system provided by the present disclosure in a low-speed low-load mode;

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

[0025] Figure 6 is a running schematic diagram of a vehicle with the hybrid power system provided by the present disclosure in a pure electric mode. DETAILED DESCRIPTION

[0026] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present disclosure, the schemes 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, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other manners different from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present disclosure, and not all the embodiments.

[0028] Figure 1 is a schematic structural diagram of a hybrid power system with a vehicle transmission provided by the present disclosure, Figure 2 is Figure 1 is a schematic structural diagram of a hybrid power system with a vehicle transmission provided by the present disclosure, Figure 1 and Figure 2 The embodiment provides a vehicle transmission, and the vehicle transmission comprises:

[0029] A differential gear device 10, the differential gear device 10 comprises a first component 11, a second component 12 and a third component 13 which are in transmission connection, the differential gear device 10 is a planetary gear set, the planetary gear set comprises 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 one 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 in transmission connection with a first motor MG1;

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

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

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

[0033] Specifically, the embodiment provides a vehicle transmission, which comprises a differential gear device 10, a first torque transmission mechanism 20 and a second torque transmission mechanism 30. The differential gear device 10 comprises a first component 11, a second component 12 and a third component 13, and the third component 13 is in driving connection with a first motor MG1. The differential gear device 10 is a planetary gear set, which comprises 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 one 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 connect the engine Engine with the first component 11, and the first torque transmission mechanism 20 is further configured to connect the first component 11 with an 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 connect the engine Engine with the second component 12, and the second torque transmission mechanism 30 is further configured to selectively connect the second component 12 with 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. Thus, the vehicle can meet the required performance in different working modes 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 The vehicle transmission is exemplarily shown in the figures, in which the first component 11 is the planet carrier C, and the third component 13 is the sun gear S. In other embodiments of the present disclosure, the first component 11 can also be the sun gear S, and the third component 13 is the planet carrier C, which will not be described herein again.

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

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

[0038] With reference to the foregoing Figure 1 and Figure 2 In some optional embodiments, the vehicle transmission further comprises 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 drivingly connect the first component 11 to the output shaft 90 in combination with the first gear set 40, and the second torque transmission mechanism 30 is further configured to selectively drivingly connect the second component 12 to the output shaft 90 in combination with the first gear set 40, the first gear set 40 being drivingly connected to the output shaft 90. That is, the first component 11 can be disconnected or connected to the first gear set 40 through the first torque transmission mechanism 20, and the second component 12 can be disconnected or connected to the first gear set 40 through the second torque transmission mechanism 30.

[0040] The second gear set 50 is connected between the first motor MG1 and the third component 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 realize the transmission of power to the wheel Wheel, thereby realizing the driving of the vehicle.

[0043] It should be noted that the vehicle transmission is exemplarily shown to comprise the first gear set 40, the second gear set 50, the third gear set 60, and the fourth gear set 70 in the embodiments of the present disclosure. In other embodiments of the present disclosure, the gear sets in the vehicle transmission can also be arranged in other manners, and the gear ratios of the gear sets can be set according to requirements, which will not be described herein again.

[0044] With reference to the foregoing Figure 1 and Figure 2Optionally, the vehicle transmission further comprises an engine shaft 100, the engine Engine and the first torque transmission mechanism 20 are connected through the engine shaft 100, so as to realize 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, so as to realize the connection between the engine Engine and the second torque transmission mechanism 30.

[0045] Optionally, the first torque transmission mechanism 20 is provided with a transmission gear set between the output shaft 90 and the first component 11. That is, the first torque transmission mechanism 20 is provided with a transmission gear set 110 between the output shaft 90 and the first torque transmission mechanism 20, 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 the connection 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 connected between the engine Engine, the first motor MG1, the second motor MG2 and the differential gear device 10 can be spline gears.

[0047] With reference to the above Figure 1 and Figure 2 , the present disclosure also provides a hybrid system comprising an engine Engine, a first motor MG1, a second motor MG2 and a transmission, wherein the transmission is the vehicle transmission provided by the present disclosure.

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

[0049] The vehicle transmission comprises a differential gear device 10, a first torque transmission mechanism 20 and a second torque transmission mechanism 30. The differential gear device 10 comprises a first component 11, a second component 12 and a third component 13, and the third component 13 is in driving connection with the first motor MG1. The differential gear device 10 is a planetary gear set, which comprises 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 one 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 connect the engine Engine with the first component 11, and the first torque transmission mechanism 20 is further configured to connect the first component 11 with the output shaft 90, i.e. the engine Engine can be disconnected or connected with the first component C through the first torque transmission mechanism 20, and the first component 11 can 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 connect the engine Engine with the second component 12, and the second torque transmission mechanism 30 is further configured to selectively connect the second component 12 with the output shaft 90, i.e. the engine Engine can be disconnected or connected with the second component R through the second torque transmission mechanism 30, and the second component 12 can be disconnected or connected with the output shaft 90 through the second torque transmission mechanism 30. Thus, the vehicle can meet the required performance in different working modes through the differential gear device 10, the first torque transmission mechanism 20 and the second torque transmission mechanism 30.

[0051] With reference to the foregoing 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, 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.

[0052] Specifically, the engine Engine can be disconnected or connected with the first component C through the first torque transmission mechanism 20, and the first component 11 can be disconnected or connected with the output shaft 90 through the first torque transmission mechanism 20, the engine Engine can be disconnected or connected with the second component R through the second torque transmission mechanism 30, and the second component 12 can be disconnected or connected with the output shaft 90 through the second torque transmission mechanism 30, i.e. different working modes can be realized 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 a low-speed high-load mode, a low-speed low-load mode, a high-speed mode and a pure electric mode, and the vehicle can meet the required performance in different working modes.

[0053] Figure 3 is a running schematic diagram of a vehicle with the hybrid system provided by the present disclosure in a low-speed high-load mode, Figure 4 is a running schematic diagram of a vehicle with the hybrid system provided by the present disclosure in a low-speed low-load mode, Figure 5 is a running schematic diagram of a vehicle with the hybrid system provided by the present disclosure in a high-speed mode, Figure 6 is a running schematic diagram of a vehicle with the hybrid system provided by the present disclosure in a pure electric mode, with reference to Figures 3-6, the working mode of the vehicle can be expressed as multiple 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. Figures 3-6 The arrows correspond to the flow direction of the power flow.

[0054] Hereinafter, the working mode of the vehicle according to the exemplary embodiment of the present application will be described. Figures 3-6

[0055] Referring to Figure 3 In some optional embodiments, in the low-speed high-load mode, the first torque transmission mechanism 20 controls the engine Engine to be connected with the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be disconnected with the output shaft, the second torque transmission mechanism 30 controls the engine Engine to be disconnected with the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be connected with the output shaft. At this time, part of the power of the engine Engine is converted into electric 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 needed, the maximum power can be continuously output in a wider vehicle low-speed range, so as to meet the demand of high load at low speed of the vehicle without affecting the normal driving of the vehicle.

[0056] Referring to Figure 4 In some optional embodiments, in the low-speed low-load mode, the first torque transmission mechanism 20 controls the engine Engine to be connected with the first component 11, and the first torque transmission mechanism 20 controls the first component 11 to be disconnected with the output shaft, the second torque transmission mechanism 30 controls the engine Engine to be connected with the second component 12, and the second torque transmission mechanism 30 controls the second component 12 to be disconnected with the output shaft. At this time, the power of the engine Engine is converted into electric energy through the first motor MG1, and then transmitted to the second motor MG2, and finally transmitted to the output shaft. And 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, a higher continuous drive shaft torque and a higher output power cannot be generated due to the influence of the power generation of the first motor MG1, but the drive shaft torque and the output power can meet the demand of normal driving when normal driving (low speed and low load) is performed, and the efficiency of the engine Engine is effectively improved.

[0057] Referring to Figure 5 ​In the high speed mode, the first torque transmission mechanism 20 controls the engine Engine to be disconnected from the first component 11, and 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 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 electric energy by the first motor MG1, and the rest of the 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, and the drive shaft torque and the output power can meet the normal driving requirements in normal driving (high speed and low load), and the engine Engine is in high efficiency operation in this mode.

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

[0059] And in the pure electric mode, the first motor MG1 and the second motor MG2 both generate power to be transmitted to the output shaft, and a higher continuous drive shaft torque can be generated compared with single motor drive.

[0060] The hybrid power system provided by the embodiments of the present disclosure can realize 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 the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the disclosure range involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and 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 each other to form a technical solution with similar functions disclosed in the present disclosure (but not limited to).

[0062] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0063] Although the subject matter has been described using language specific to structural features and / or methodological logic, 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. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0064] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily 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 this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle transmission characterized by, Comprising: a differential gear device, the differential gear device comprising a first component, a second component and a third component in driving connection, 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, the third component being in driving connection with a first motor; a first torque transmission mechanism configured to selectively connect the engine with the first component, the first torque transmission mechanism being further configured to selectively connect the first component with an output shaft; a second torque transmission mechanism configured to selectively connect the engine with the second component, the second torque transmission mechanism being further configured to selectively connect the second component with the output shaft; the output shaft being connected with a second motor.

2. The vehicle transmission of claim 1, wherein: the vehicle transmission further comprises 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 connect the first component with the output shaft by engaging with the first gear set, the second torque transmission mechanism is further configured to selectively connect the second component with the output shaft by engaging with the first gear set, the first gear set being in driving connection with 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 a drive shaft.

3. The vehicle transmission of claim 1, wherein: the vehicle transmission further comprises an engine shaft, the engine and the second torque transmission mechanism being connected through the engine shaft, the engine and the first torque transmission mechanism being connected through the engine shaft.

4. The vehicle transmission of claim 1, wherein: the first torque transmission mechanism is provided with a transmission gear set between the output shaft and the first component.

5. A hybrid system characterized by comprising: A hybrid power system comprising an engine, a first motor, a second motor and a transmission, wherein the transmission is the vehicle transmission of any one of claims 1-4.

6. The hybrid system according to claim 5, characterized by 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, the working modes including 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 of claim 6, wherein: in the low-speed high-load mode, the first torque transmission mechanism controls the engine to be connected with the first component, and the first torque transmission mechanism controls the first component to be disconnected with the output shaft, the second torque transmission mechanism controls the engine to be disconnected with the second component, and the second torque transmission mechanism controls the second component to be connected with the output shaft.

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

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

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

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