Transmission and vehicle drive system

Abstract

The application provides a transmission and a vehicle driving system, the transmission of the application, an input shaft is in transmission connection with a first intermediate shaft through a first transmission component and a second transmission component respectively; a third transmission component is arranged on the second intermediate shaft and is in transmission connection with the first transmission component; the input shaft is selectively connected with the second intermediate shaft through a fourth transmission component; and an output shaft is in transmission connection with the first intermediate shaft through a speed conversion device. The transmission of the application can realize multiple different gear modes through the arrangement form of the transmission components arranged between the input shaft, the first intermediate shaft, the second intermediate shaft and the output shaft, can shorten the overall length of the transmission, and can improve the transmission efficiency of the transmission through fewer transmission components.

Description

Technical Field

[0001] This invention relates to the field of vehicle component technology, and in particular to a transmission. Furthermore, this invention also relates to a vehicle drive system using this transmission. Background Technology

[0002] A gearbox is a mechanism used to change the speed and torque from an engine. It can change the transmission ratio between the output shaft and the input shaft in a fixed or progressively increasing manner; it is also called a transmission. A hybrid transmission is a type of transmission that couples the power from the engine and the drive motor in a certain way, enabling the functions of changing speed and torque.

[0003] Existing hybrid transmissions have a relatively long overall structure, which makes them unsuitable for lateral arrangement and complicates vehicle layout. Furthermore, current technologies integrate numerous gears on the transmission's drive shaft, resulting in a complex structure. For multi-gear transmissions, power transmission requires passing through multiple sets of gears, leading to reduced efficiency; while for low-gear transmissions, power delivery is poor, failing to meet performance requirements. Summary of the Invention

[0004] In view of this, the present invention aims to provide a transmission that improves its performance.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A transmission includes an input shaft, a first transmission component, a second transmission component, a third transmission component, a fourth transmission component, a speed conversion device, a first intermediate shaft, a second intermediate shaft, and an output shaft;

[0007] The first intermediate shaft is movably connected to the input shaft via the first transmission component and the second transmission component, respectively.

[0008] The third transmission component is connected to the first transmission component and is mounted on the second intermediate shaft;

[0009] The second intermediate shaft is selectively connected to the input shaft via the fourth transmission component;

[0010] The output shaft is driven by the speed conversion device and connected to the first intermediate shaft. Further, the first transmission component includes a first driving wheel, a second driving wheel, a first synchronizer for selectively connecting the first driving wheel or the second driving wheel, a first driven wheel, and a second driven wheel; the first driving wheel, the second driving wheel, and the first synchronizer are all located on the input shaft; the first driven wheel and the second driven wheel are both located on the first intermediate shaft; the first driving wheel and the first driven wheel are drivenly connected, and the second driving wheel and the second driven wheel are drivenly connected.

[0011] Furthermore, the second transmission component includes a third driving wheel and a fourth driving wheel disposed on the input shaft, a third driven wheel, a fourth driven wheel, and a second synchronizer disposed on the first intermediate shaft; the third driving wheel and the third driven wheel are connected in a driving relationship, and the fourth driving wheel and the fourth driven wheel are connected in a driving relationship; the second synchronizer is used to selectively connect the third driven wheel or the fourth driven wheel.

[0012] Furthermore, the third transmission component includes a seventh drive wheel, an eighth drive wheel, and a third synchronizer for selectively connecting the seventh drive wheel or the eighth drive wheel on the second intermediate shaft; the seventh drive wheel is drivenly connected to the first driven wheel, and the eighth drive wheel is drivenly connected to the second driven wheel.

[0013] Furthermore, the second transmission component includes a third driving wheel and a fourth driving wheel disposed on the input shaft, a third driven wheel, a fourth driven wheel, and a second synchronizer disposed on the first intermediate shaft; the third driving wheel and the third driven wheel are connected in a driving relationship, and the fourth driving wheel and the fourth driven wheel are connected in a driving relationship; the second synchronizer is used to selectively connect the third driven wheel or the fourth driven wheel.

[0014] Furthermore, the fourth transmission component includes a fifth driving wheel disposed on the input shaft, a fifth driven wheel disposed on the second intermediate shaft, and a fourth synchronizer; the fourth synchronizer is used to selectively connect the fifth driven wheel; the fifth driving wheel and the fifth driven wheel are connected in a driving transmission.

[0015] Furthermore, it also includes a motor; a sixth driven wheel is provided on the second intermediate shaft, and the power output shaft of the motor is connected to the sixth driven wheel or the fifth driven wheel; the fourth synchronizer is used to selectively connect the sixth driven wheel.

[0016] Furthermore, it also includes a third intermediate shaft and a third intermediate wheel disposed on the third intermediate shaft; a sixth driving wheel is disposed on the power output shaft of the motor; the third intermediate wheel is drivenly connected to the sixth driving wheel, and the third intermediate wheel is drivenly connected to the sixth driven wheel or the fifth driven wheel.

[0017] Furthermore, the speed conversion device also includes a fifth intermediate shaft, which is connected to the first intermediate shaft in a transmission manner; a fifth transmission component and a sixth transmission component are provided on the fifth intermediate shaft, and a first control mechanism is provided on the output shaft to selectively connect the fifth transmission component or the sixth transmission component.

[0018] Furthermore, the fifth transmission component includes a first gear disposed on the fifth intermediate shaft; a second gear is disposed on the output shaft, the second gear being connected to the sixth transmission component in a transmission manner; the first control mechanism includes a fifth synchronizer for connecting the first gear or the second gear.

[0019] Furthermore, the sixth transmission component includes a planetary gear mechanism; the sun gear of the planetary gear mechanism is mounted on the fifth intermediate shaft; the ring gear or planet carrier of the planetary gear mechanism is connected to the second gear; the fifth intermediate shaft and the output shaft are arranged coaxially.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) The transmission described in this invention, through the arrangement of the first and second transmission components, facilitates the transmission of power connected to the input bearing to the first intermediate shaft via the first or second transmission component; through the arrangement of the fourth transmission component, facilitates the transmission of power connected to the input bearing to the second intermediate shaft; and through the arrangement of the third transmission component, facilitates the transmission of power from the second intermediate shaft to the first intermediate shaft. By providing a speed conversion device, it facilitates the transmission of power connected to the input bearing to the first intermediate shaft via the speed conversion device, realizing multiple gear modes and enriching the performance of the transmission.

[0022] The transmission of the present invention, through the arrangement of the transmission components between the input shaft, the first intermediate shaft and the second intermediate shaft, can not only realize a variety of different gear modes, but also shorten the overall length of the transmission, and improve the transmission efficiency of the transmission by reducing the number of transmission components.

[0023] (2) The first transmission component includes a first driving wheel, a second driving wheel, a first synchronizer, a first driven wheel and a second driven wheel, and the first synchronizer is used to selectively connect the first driving wheel or the second driving wheel to realize the transmission of power from the input shaft to the first intermediate shaft, which is convenient for arrangement and facilitates gear control and speed adjustment.

[0024] (3) The second transmission component includes a third driving wheel, a fourth driving wheel, a third driven wheel, a fourth driven wheel and a second synchronizer. The third driven wheel or the fourth driven wheel is selectively connected through the second synchronizer to realize the power transmission from the input bearing to the first intermediate shaft. This is convenient for arrangement and facilitates gear control and speed adjustment.

[0025] (4) The third transmission component includes a seventh driving wheel, an eighth driving wheel and a third synchronizer. The seventh driving wheel and the eighth driving wheel are respectively connected to the first driven wheel and the second driven wheel. The power transmission from the second intermediate bearing to the first intermediate shaft is realized by selectively connecting the third synchronizer to the seventh driving wheel or the eighth driving wheel. This facilitates the arrangement and enables the realization of multiple gear modes.

[0026] (5) The fourth transmission component includes a fifth drive wheel, a fifth driven wheel and a fourth synchronizer. By selectively connecting the fourth synchronizer to the fifth driven wheel or the sixth driven wheel, the power connected to the input bearing is transmitted to the second intermediate shaft via the fourth transmission component and then to the first intermediate shaft via the second intermediate shaft, or from the second intermediate shaft to the input shaft and then to the first intermediate shaft, which facilitates the implementation of reverse gear mode and further enriches the performance of the transmission.

[0027] (6) The transmission also includes a motor and a sixth driven wheel. By selectively connecting the sixth driven wheel to the fourth synchronizer, the power output of the motor is transmitted to the second intermediate shaft. The power transmission structure is simple, easy to arrange, and can realize multiple driving modes.

[0028] (7) The transmission also includes a third intermediate shaft, a third intermediate wheel, a sixth driving wheel and a sixth driven wheel, and facilitates the transmission of the motor's power to the second intermediate shaft by driving the third intermediate wheel to the sixth driving wheel, or driving the third intermediate wheel to the fifth driven wheel or the sixth driven wheel. The power can be transmitted to the first intermediate shaft or the input shaft via the second intermediate shaft.

[0029] (8) The speed conversion device includes a fifth intermediate shaft. By providing the fifth intermediate shaft, it is convenient to arrange the fifth transmission component and the sixth transmission component, and it can receive the power transmitted from the first intermediate shaft and transmit it to the output shaft.

[0030] (9) The fifth transmission component includes a first gear and a second gear is provided on the output shaft. By selectively connecting the first gear or the second gear through the first control mechanism, the power received on the fifth intermediate shaft can be transmitted to the output shaft via the first gear or via the sixth transmission component and the second gear, thereby facilitating the realization of various different gear modes.

[0031] (10) The sixth transmission component includes a planetary gear mechanism. By placing the sun gear of the planetary gear mechanism on the fifth intermediate shaft and connecting the ring gear or planet carrier of the planetary gear mechanism to the second gear, the power received on the fifth intermediate shaft can be transmitted to the output shaft via the planetary gear mechanism and the second gear, facilitating the realization of the ultra-low speed mode. In addition, by arranging the fifth intermediate shaft and the output shaft coaxially, the power transmission structure between the fifth intermediate shaft and the output shaft can be simplified, facilitating power transmission between the fifth intermediate shaft and the output shaft.

[0032] Another object of the present invention is to provide a vehicle drive system comprising a transmission as described above, and further comprising an engine and a clutch; the clutch is disposed between the power output end of the engine and the input shaft, and the clutch is used to control the power supply between the input shaft and the power output end of the engine.

[0033] The vehicle drive system described in this invention, by placing the control mechanism at the engine's power output end and controlling the power connection and disconnection between the input shaft and the engine's power output end, can achieve multiple drive modes, including engine-only drive, motor-only drive, and engine and motor combined drive, with multiple gear options available in each drive mode. Furthermore, the clutch can utilize existing standard components, thus reducing the overall cost of the vehicle drive system. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0035] Figure 1 This is a schematic diagram of the transmission in application state according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the power transmission route of the transmission in the first gear mode when the engine is driven, according to an embodiment of the present invention.

[0037] Figure 3 This is a schematic diagram of the power transmission route of the transmission in the second gear mode when the engine is driven, according to an embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of the power transmission route of the transmission in the third gear mode when the engine is driven, according to an embodiment of the present invention.

[0039] Figure 5 This is a schematic diagram of the power transmission route of the transmission in the fourth gear mode when the engine is driven, according to an embodiment of the present invention.

[0040] Figure 6 This is a schematic diagram of the power transmission route of the transmission in the first reverse gear mode when the engine is driven, according to an embodiment of the present invention.

[0041] Figure 7 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine is in the second reverse gear mode;

[0042] Figure 8This is a schematic diagram of the power transmission route of the transmission in ultra-low speed gear mode when the engine is driven, as described in an embodiment of the present invention.

[0043] Figure 9 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine and motor are driving together in the first gear mode.

[0044] Figure 10 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine and motor are driving together in the second gear mode.

[0045] Figure 11 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine and motor are driving together in the third gear mode.

[0046] Figure 12 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine and motor are driving together in the fourth gear mode.

[0047] Figure 13 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when the engine and motor are driving together in an ultra-low speed gear mode.

[0048] Figure 14 This is a schematic diagram of the power transmission route of the transmission in the first gear mode when driven by the electric motor, as described in an embodiment of the present invention.

[0049] Figure 15 This is a schematic diagram of the power transmission route of the transmission in the second gear mode when driven by the electric motor, as described in an embodiment of the present invention.

[0050] Figure 16 This is a schematic diagram of the power transmission route of the transmission described in this embodiment of the invention when it is in an ultra-low speed gear mode driven by a motor.

[0051] Figure 17 This is a schematic diagram of the output shaft assembly according to an embodiment of the present invention.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Engine; 2. Electric motor; 201. Sixth drive wheel; 3. Clutch;

[0054] 4. Input shaft; 401. First drive pulley; 402. Second drive pulley; 403. Third drive pulley; 404. Fourth drive pulley; 405. Fifth drive pulley; 406. First synchronizer;

[0055] 5. First intermediate shaft; 501. First driven wheel; 502. Second driven wheel; 503. Third driven wheel; 504. Fourth driven wheel; 505. Second synchronizer; 506. Ninth driving wheel;

[0056] 6. Second intermediate shaft; 601. Seventh driving wheel; 602. Eighth driving wheel; 603. Fifth driven wheel; 604. Sixth driven wheel; 605. Third synchronizer; 606. Fourth synchronizer;

[0057] 7. Third intermediate shaft; 701. Third intermediate wheel;

[0058] 8. Fifth intermediate shaft; 801. Ninth driven gear; 802. First gear;

[0059] 9. Planetary gear mechanism; 901. Sun gear; 902. Planet gears; 903. Ring gear; 904. Planet carrier;

[0060] 10. Output shaft; 1001. Second gear; 1002. Fifth synchronizer;

[0061] 11. Differential; 12. Steering mechanism. Detailed Implementation

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0063] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this invention, unless otherwise expressly defined, the terms "installation," "connection," "linking," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0065] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0066] This embodiment relates to a transmission, such as Figure 1As shown, the overall structure mainly includes an input shaft 4, a first transmission component, a second transmission component, a third transmission component, a fourth transmission component, a speed conversion device, a first intermediate shaft 5, a second intermediate shaft 6, and an output shaft 10.

[0067] The first intermediate shaft 5 is connected to the input shaft 4 via a first transmission component and a second transmission component, respectively, so that the power received by the input shaft 4 can be transmitted to the first intermediate shaft 5 via either the first or second transmission component. The second intermediate shaft 6 is equipped with a third transmission component, which is connected to the first transmission component, facilitating the transmission of power received on the second intermediate shaft 6 to the first intermediate shaft 5 via both the third and first transmission components. The second intermediate shaft 6 is selectively connected to the input shaft 4 via a fourth transmission component, facilitating the transmission of power received on the input shaft 4 to the second intermediate shaft 6 via the fourth transmission component.

[0068] Furthermore, the output shaft 4 is connected to the first intermediate shaft 5 via a speed conversion device, allowing the power received by the output shaft 4 to be transmitted to the first intermediate shaft 5 via the speed conversion device, thus facilitating the implementation of multiple gear modes. Additionally, the output shaft 10 can be directly used as the power input shaft of the differential 11, for inputting power to the differential 11.

[0069] In this embodiment, an output shaft assembly is also provided, such as... Figure 17 As shown, it includes a gear assembly, a steering device 12, and an output shaft 10. In this embodiment, the gear assembly is configured as an intermediate bushing, with a second gear 1001 loosely fitted on the gear assembly, and the gear assembly is fixedly connected to a fifth synchronizer 1002. The steering device 12 is angularly connected to the gear assembly and the output shaft 10. The steering device 12 includes a ball bearing support frame and a plurality of balls. The ball bearing support frame has a plurality of ball bearing mounting positions arranged circumferentially along the ball bearing support frame, with each ball bearing corresponding to a ball bearing and a portion of the ball bearing embedded in the ball bearing mounting position. The output shaft 10 and one component of the gear assembly are fixedly connected to the ball bearing support frame. The output shaft 10 and the other component of the gear assembly have a plurality of slides arranged circumferentially along their respective slides, the extension direction of which is the axial direction of the output shaft assembly, and another portion of the ball bearing is embedded in the slide.

[0070] The output shaft assembly provided in this embodiment of the invention connects the gear assembly and the output shaft 10 via a steering device 12. The angle between the centerline of the ball bearing support and the axis of the gear assembly can be adjusted by multiple balls at different positions within their corresponding slides. Since one component of the output shaft 10 and the gear assembly is fixedly connected to the ball bearing support, and the other component of the output shaft 10 and the gear assembly has a slide, the angle of the output shaft 10 relative to the gear assembly can be adjusted. Because the outer side of the gear assembly has teeth that mesh with the preceding gear in the transmission, the angle adjustment of the output shaft 10 relative to the gear assembly achieves directional adjustment of the output shaft 10, reducing the limitations on the arrangement of the output shaft 10 and its connected components (such as the main reducer), and also reducing the limitations on the arrangement of the connected components, facilitating vehicle layout; furthermore, it facilitates assembly during powertrain assembly. Figure 1 As shown, in a preferred embodiment, the first transmission component includes a first drive wheel 401 and a second drive wheel 402 loosely fitted on the input shaft 4, a first synchronizer 406 fixed on the input shaft 4, and a first driven wheel 501 and a second driven wheel 502 fixed on the first intermediate shaft 5. The first drive wheel 401 and the first driven wheel 501 are meshed together, and the second drive wheel 402 and the second driven wheel 502 are meshed together. By selectively connecting the first synchronizer 406 to either the first drive wheel 401 or the second drive wheel 402, the power received on the input shaft 4 can be transmitted to the first intermediate shaft 5 via the first drive wheel 401 and the first driven wheel 501, or via the second drive wheel 402 and the second driven wheel 502, thus facilitating the adjustment of multiple gear modes.

[0071] Furthermore, in this embodiment, the first transmission component is preferably arranged close to the power output end of the engine 1 described below. This is beneficial for making the internal structure of the transmission more compact, shortening the length of the transmission, and facilitating the arrangement of the transmission on the vehicle.

[0072] like Figure 1 As shown, in a preferred embodiment, the third transmission component includes a seventh drive wheel 601 and an eighth drive wheel 602 loosely fitted on the second intermediate shaft 6, and a third synchronizer 605 fixed on the second intermediate shaft 6. The seventh drive wheel 601 is meshed with the first driven wheel 501, and the eighth drive wheel 602 is meshed with the second driven wheel 502.

[0073] By selectively connecting the third synchronizer 605 to the seventh drive wheel 601 or the eighth drive wheel 602, the power received on the second intermediate shaft 6 can be transmitted to the first intermediate shaft 5 via the seventh drive wheel 601, the first driven wheel 501 and the third synchronizer 605, or via the eighth drive wheel 602, the second driven wheel 502 and the third synchronizer 605, thus facilitating the realization of various gear modes.

[0074] The second transmission component is used to transmit power from the input shaft 4 to the first intermediate shaft 5. As a preferred and feasible implementation, the second transmission component includes a third driving wheel 403 and a fourth driving wheel 404 fixed on the input shaft 4, a third driven wheel 503 and a fourth driven wheel 504 loosely fitted on the first intermediate shaft 5, and a second synchronizer 505 fixed on the first intermediate shaft 5.

[0075] Preferably, the third driving wheel 403 and the third driven wheel 503 are meshed together, and the fourth driving wheel 404 and the fourth driven wheel 504 are meshed together. By selectively connecting the third driven wheel 503 or the fourth driven wheel 504 to the second synchronizer 505, the power received on the input shaft 4 can be transmitted to the first intermediate shaft 5 via the third driven wheel 503 or the fourth driven wheel 504, thereby facilitating the realization of various gear modes.

[0076] In a preferred embodiment, the fourth transmission component includes a fifth drive wheel 405 fixed to the input shaft 4, a fifth driven wheel 603 loosely fitted onto the second intermediate shaft 6, and a fourth synchronizer 606 fixed to the second intermediate shaft 6. The fifth drive wheel 405 and the fifth driven wheel 603 are meshed together. By selectively connecting the fourth synchronizer 606 to the fifth driven wheel 603, the power received on the input shaft 4 can be transmitted to the second intermediate shaft 6 via the fourth transmission component, and then to the first intermediate shaft 5 via the third transmission component, thus achieving reverse gear mode. Furthermore, the third transmission component allows the transmission to have two different gears even when in reverse gear.

[0077] Furthermore, as a preferred arrangement, in this embodiment, the fifth drive wheel 405 is positioned between the third drive wheel 403 and the fourth drive wheel 404, thereby shortening the overall length of the transmission and facilitating its placement on the vehicle.

[0078] In addition, the transmission also includes a motor 2, and a sixth driven wheel 604 is loosely fitted on the second intermediate shaft 6. The power output shaft of the motor 2 is connected to the sixth driven wheel 604. By selectively connecting the fourth synchronizer 606 to the sixth driven wheel 604, the power input from the motor 2 is transmitted to the second intermediate shaft 6, thereby enabling the motor 2 to drive the transmission. It should be noted that the sixth driven wheel 604 facilitates the arrangement of the motor 2. Of course, it is also possible not to have the sixth driven wheel 604. In this case, the fourth synchronizer 606 can selectively connect to the fifth driven wheel 603, thereby enabling the power to be switched on and off between the power output shaft of the motor 2 and the second intermediate shaft 6.

[0079] In a preferred embodiment, the transmission further includes a third intermediate shaft 7 and a third intermediate pulley 701 mounted on the third intermediate shaft 7. A sixth drive pulley 201 is fixedly mounted on the power output shaft of the motor 2. The third intermediate pulley 701 is meshed with the sixth drive pulley 201, and the third intermediate pulley 701 is meshed with either the sixth driven pulley 604 or the fifth driven pulley 603. Thus, the power output from the motor 2 is transmitted to the second intermediate shaft 6 via the sixth drive pulley 201, the third intermediate pulley 701, the sixth driven pulley 604 or the fifth driven pulley 603, and the fourth synchronizer 606. Alternatively, the third intermediate shaft 7 and the third intermediate pulley 701 may be omitted, and the sixth drive pulley 201 may be directly meshed with either the sixth driven pulley 604 or the fifth driven pulley 603, allowing the power from the motor 2 to be transmitted to the second intermediate shaft 6 via the sixth drive pulley 201, the sixth driven pulley 604 or the fifth driven pulley 603, and the fourth synchronizer 606.

[0080] Preferably, the speed conversion device in this embodiment includes a fifth intermediate shaft 8, which is connected to the first intermediate shaft 5 in a transmission manner. The fifth transmission component and the sixth transmission component are both disposed on the fifth intermediate shaft 8.

[0081] The fifth transmission component includes a first gear 802 fixed on the fifth intermediate shaft 8 and a second gear 1001 loosely fitted on the output shaft 10. The second gear 1001 is connected to the sixth transmission component. The first control mechanism includes a fifth synchronizer 1002 for connecting the first gear 802 or the second gear 1001. By selectively connecting the fifth synchronizer 1002 to the first gear 802 and the second gear 1001, the power received on the fifth intermediate shaft 8 can be transmitted to the output shaft 10 via the first gear 802 and the fifth synchronizer 1002, or via the sixth transmission component, the second gear 1001 and the fifth synchronizer 1002, to facilitate the transmission to achieve multiple different gears.

[0082] Furthermore, the aforementioned sixth transmission component, in a preferred embodiment, includes a planetary gear mechanism 9. The planetary gear mechanism 9 mainly comprises a sun gear 901, a ring gear 903, and planetary gears 902 respectively connected to the sun gear 901 and the ring gear 903. The sun gear 901 is fixed to the fifth intermediate shaft 8, the ring gear 903 is fixed to the transmission housing, and the second gear 1001 is connected to the planet carrier 904. In this case, by selectively connecting the fifth synchronizer 1002 to the second gear 1001, the power received on the fifth intermediate shaft 8 is easily transmitted to the output shaft 10 via the sixth transmission component, the second gear 1001, and the fifth synchronizer 1002. This enables the transmission to achieve an ultra-low speed mode, thereby improving the transmission's performance. Simultaneously, each gear in the transmission of this invention has an ultra-low speed mode, resulting in good driving performance.

[0083] It should be noted that if the planet carrier 904 of the planetary gear mechanism 9 is fixed to the transmission housing, the second gear 1001 can be connected to the gear ring 903. In this case, by selectively connecting the fifth synchronizer 1002 to the second gear 1001, power transmission between the fifth intermediate shaft 8 and the output shaft 10 is achieved. Furthermore, as a preferred arrangement, in this embodiment, the fifth intermediate shaft 8 and the output shaft 10 are arranged coaxially to simplify the power transmission structure between them and make the power transmission between them more stable.

[0084] In a preferred embodiment, the transmission in this example also includes a ninth drive wheel 506 and a ninth driven wheel 801. The ninth drive wheel 506 is fixed to the first intermediate shaft 5, and preferably positioned at one end of the first intermediate shaft 5 near the differential 11. The ninth driven wheel 801 is fixed to the fifth intermediate shaft 8. The ninth drive wheel 506 and the ninth driven wheel 801 are meshed together, enabling the transmission of power received on the first intermediate shaft 5 to the output shaft 10. Alternatively, the fifth intermediate shaft 8 can be directly connected to the first intermediate shaft 5, or both can be coaxially arranged. In this case, the ninth drive wheel 506 and the ninth driven wheel 801 are not required; however, this might result in a larger axial space occupied by the transmission along the first intermediate shaft 5.

[0085] The transmission in this embodiment, by optimizing the gear arrangement of each transmission component, can not only realize a variety of different gear modes, but also shorten the overall length of the transmission, while reducing the number of gear sets through which power is transmitted, thereby improving the transmission efficiency of the transmission.

[0086] This embodiment also relates to a vehicle drive system, which includes the aforementioned transmission, as well as an engine 1 and a clutch 3. The clutch 3 is located between the power output end of the engine 1 and the input shaft 4. By engaging or disengaging the clutch 3, the power supply between the power output end of the engine 1 and the input shaft 4 can be controlled, allowing the power output by the engine 1 to be transmitted to the output shaft 10 via the input shaft 4 and the first intermediate shaft 5, thereby enabling various drive modes.

[0087] The vehicle drive system of this embodiment has three drive modes, including engine 1 drive mode alone, engine 1 and motor 2 drive mode together, and motor 2 drive mode alone. Each drive mode has multiple different gear modes, which can be referred to below for details.

[0088] The gear modes for engine 1 driving independently are as follows:

[0089] 1) When engine 1 is driving alone, the power transmission route of the transmission in first gear can be as follows: Figure 2 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with first drive wheel 401, and fifth synchronizer 1002 is engaged with first gear 802.

[0090] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → First synchronizer 406 → First drive wheel 401 → First driven wheel 501 → First intermediate shaft 5 → Ninth drive wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0091] 2) When engine 1 is driving alone, the power transmission route of the transmission in second gear can be as follows: Figure 3 As shown, at this time, clutch 3 is engaged, second synchronizer 505 is engaged with third driven wheel 503, and fifth synchronizer 1002 is engaged with first gear 802.

[0092] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → Third driving wheel 403 → Third driven wheel 503 → Second synchronizer 505 → First intermediate shaft 5 → Ninth driving wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0093] 3) When engine 1 is driving alone, the power transmission route of the transmission in third gear can be as follows: Figure 4 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with second drive wheel 402, and fifth synchronizer 1002 is engaged with first gear 802.

[0094] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → First synchronizer 406 → Second drive wheel 402 → Second driven wheel 502 → First intermediate shaft 5 → Ninth drive wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0095] 4) When engine 1 is driving alone, the power transmission route of the transmission in fourth gear can be as follows: Figure 5 As shown, at this time, clutch 3 is engaged, second synchronizer 505 is engaged with fourth driven wheel 504, and fifth synchronizer 1002 is engaged with first gear 802.

[0096] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → Fourth driving wheel 404 → Fourth driven wheel 504 → Second synchronizer 505 → First intermediate shaft 5 → Ninth driving wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0097] 5) When engine 1 is driving alone, the power transmission route of the transmission in first reverse gear can be as follows: Figure 6 As shown, at this time, clutch 3 is engaged, third synchronizer 605 is engaged with seventh drive wheel 601, fourth synchronizer 606 is engaged with fifth driven wheel 603, and fifth synchronizer 1002 is engaged with first gear 802.

[0098] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → Fifth drive wheel 405 → Fifth driven wheel 603 → Fourth synchronizer 606 → Second intermediate shaft 6 → Third synchronizer 605 → Seventh drive wheel 601 → First driven wheel 501 → First intermediate shaft 5 → Ninth drive wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0099] 6) When engine 1 is driving alone, the power transmission route of the transmission in the second reverse gear position can be as follows: Figure 7 As shown, at this time, clutch 3 is engaged, third synchronizer 605 is engaged with eighth drive wheel 602, fourth synchronizer 606 is engaged with fifth driven wheel 603, and fifth synchronizer 1002 is engaged with first gear 802.

[0100] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → Fifth drive wheel 405 → Fifth driven wheel 603 → Fourth synchronizer 606 → Second intermediate shaft 6 → Third synchronizer 605 → Eighth drive wheel 602 → Second driven wheel 502 → First intermediate shaft 5 → Ninth drive wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0101] 7) When engine 1 is driving alone, the power transmission route of the transmission in ultra-low gear can be as follows: Figure 8 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with first drive wheel 401, and fifth synchronizer 1002 is engaged with second gear 1001.

[0102] The power transmission route is as follows: Engine 1 → Clutch 3 → Input shaft 4 → First synchronizer 406 → First drive wheel 401 → First driven wheel 501 → First intermediate shaft 5 → Ninth drive wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → Sun gear 901 → Planet gear 902 → Planet carrier 904 → Second gear 1001 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0103] The gear modes when engine 1 and electric motor 2 are used together are as follows:

[0104] 1) When engine 1 and motor 2 drive together, the power transmission route of the transmission in first gear can be as follows: Figure 9 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with first drive wheel 401, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with seventh drive wheel 601, and fifth synchronizer 1002 is engaged with first gear 802.

[0105] The power transmission route of engine 1 is as follows: engine 1 → clutch 3 → input shaft 4 → first synchronizer 406 → first drive wheel 401 → first driven wheel 501 → first intermediate shaft 5 → ninth drive wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0106] The power transmission route of motor 2 is as follows: motor 2 → sixth driving wheel 201 → third intermediate wheel 701 → sixth driven wheel 604 → fourth synchronizer 606 → second intermediate shaft 6 → third synchronizer 605 → seventh driving wheel 601 → first driven wheel 501 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0107] 2) When engine 1 and motor 2 drive together, the power transmission route of the transmission in second gear can be as follows: Figure 10 As shown, at this time, clutch 3 is engaged, second synchronizer 505 is engaged with third driven wheel 503, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with seventh driving wheel 601, and fifth synchronizer 1002 is engaged with first gear 802. It should be noted that this gear mode can be implemented by adjusting the speed of motor 10 to match the power transmission route of engine 20.

[0108] The power transmission route of engine 1 is as follows: engine 1 → clutch 3 → input shaft 4 → third drive wheel 403 → third driven wheel 503 → second synchronizer 505 → first intermediate shaft 5 → ninth drive wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0109] The power transmission route of motor 2 is as follows: motor 2 → sixth driving wheel 201 → third intermediate wheel 701 → sixth driven wheel 604 → fourth synchronizer 606 → second intermediate shaft 6 → third synchronizer 605 → seventh driving wheel 601 → first driven wheel 501 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0110] 3) When engine 1 and motor 2 drive together, the power transmission route of the transmission in third gear can be as follows: Figure 11 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with second drive wheel 402, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with eighth drive wheel 602, and fifth synchronizer 1002 is engaged with first gear 802.

[0111] The power transmission route of engine 1 is as follows: engine 1 → clutch 3 → input shaft 4 → first synchronizer 406 → second driving wheel 402 → second driven wheel 502 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0112] The power transmission route of motor 2 is as follows: motor 2 → sixth driving wheel 201 → third intermediate wheel 701 → sixth driven wheel 604 → fourth synchronizer 606 → second intermediate shaft 6 → third synchronizer 605 → eighth driving wheel 602 → second driven wheel 502 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0113] 4) When engine 1 and motor 2 drive together, the power transmission route of the transmission in fourth gear can be as follows: Figure 12 As shown, at this time, clutch 3 is engaged, second synchronizer 505 is engaged with fourth driven wheel 504, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with eighth driving wheel 602, and fifth synchronizer 1002 is engaged with first gear 802. It should be noted that this gear mode can be implemented by adjusting the speed of motor 10 to match the power transmission route of engine 20.

[0114] The power transmission route of engine 1 is as follows: engine 1 → clutch 3 → input shaft 4 → fourth drive wheel 404 → fourth driven wheel 504 → second synchronizer 505 → first intermediate shaft 5 → ninth drive wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0115] The power transmission route of motor 2 is as follows: motor 2 → sixth driving wheel 201 → third intermediate wheel 701 → sixth driven wheel 604 → fourth synchronizer 606 → second intermediate shaft 6 → third synchronizer 605 → eighth driving wheel 602 → second driven wheel 502 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → first gear 802 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0116] 5) When engine 1 and motor 2 drive together, the power transmission route of the transmission in ultra-low gear can be as follows: Figure 13 As shown, at this time, clutch 3 is engaged, first synchronizer 406 is engaged with first drive wheel 401, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with seventh drive wheel 601, and fifth synchronizer 1002 is engaged with second gear 1001.

[0117] The power transmission route of engine 1 is as follows: engine 1 → clutch 3 → input shaft 4 → first synchronizer 406 → first driving wheel 401 → first driven wheel 501 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → sun gear 901 → planet gear 902 → planet carrier 904 → second gear 1001 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0118] The power transmission route of motor 2 is as follows: motor 2 → sixth driving wheel 201 → third intermediate wheel 701 → sixth driven wheel 604 → fourth synchronizer 606 → second intermediate shaft 6 → third synchronizer 605 → seventh driving wheel 601 → first driven wheel 501 → first intermediate shaft 5 → ninth driving wheel 506 → ninth driven wheel 801 → fifth intermediate shaft 8 → sun gear 901 → planetary gear 902 → planetary carrier 904 → second gear 1001 → fifth synchronizer 1002 → output shaft 10 → differential 11.

[0119] The gear modes when motor 2 is driven alone are as follows:

[0120] 1) When motor 2 is driven alone, the power transmission route of the transmission in first gear can be as follows: Figure 14 As shown, at this time, clutch 3 is disengaged, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with seventh driving wheel 601, and fifth synchronizer 1002 is engaged with first gear 802.

[0121] The power transmission route is as follows: Motor 2 → Sixth driving wheel 201 → Third intermediate wheel 701 → Sixth driven wheel 604 → Fourth synchronizer 606 → Second intermediate shaft 6 → Third synchronizer 605 → Seventh driving wheel 601 → First driven wheel 501 → First intermediate shaft 5 → Ninth driving wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0122] 2) When motor 2 is driven alone, the power transmission route of the transmission in second gear can be as follows: Figure 15 As shown, at this time, clutch 3 is disengaged, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with eighth driving wheel 602, and fifth synchronizer 1002 is engaged with first gear 802.

[0123] The power transmission route is as follows: Motor 2 → Sixth driving wheel 201 → Third intermediate wheel 701 → Sixth driven wheel 604 → Fourth synchronizer 606 → Second intermediate shaft 6 → Third synchronizer 605 → Eighth driving wheel 602 → Second driven wheel 502 → First intermediate shaft 5 → Ninth driving wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → First gear 802 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0124] 3) When motor 2 is driven alone, the power transmission route of the transmission in the ultra-low speed gear can be as follows: Figure 16 As shown, at this time, clutch 3 is disengaged, fourth synchronizer 606 is engaged with sixth driven wheel 604, third synchronizer 605 is engaged with seventh driving wheel 601, and fifth synchronizer 1002 is engaged with second gear 1001.

[0125] The power transmission route is as follows: Motor 2 → Sixth driving wheel 201 → Third intermediate wheel 701 → Sixth driven wheel 604 → Fourth synchronizer 606 → Second intermediate shaft 6 → Third synchronizer 605 → Seventh driving wheel 601 → First driven wheel 501 → First intermediate shaft 5 → Ninth driving wheel 506 → Ninth driven wheel 801 → Fifth intermediate shaft 8 → Sun gear 901 → Planet gear 902 → Planet carrier 904 → Second gear 1001 → Fifth synchronizer 1002 → Output shaft 10 → Differential 11.

[0126] It should be noted that the above-mentioned connection of the power output shaft of motor 2 to the sixth driven wheel 604 is only a preferred embodiment. Alternatively, the power output shaft of motor 2 can be connected to the fifth driven wheel 603. In this case, the sixth driven wheel 604 is not required. The power output of motor 2 can be transmitted to the second intermediate shaft 6 via the fifth driven wheel 603 and the fourth synchronizer 606. The power transmitted to the second intermediate shaft 6 can be transmitted to the differential 11 via the power transmission routes of the first gear, second gear, and ultra-low speed gear when motor 2 is driven alone, thus realizing different gear modes.

[0127] In addition, when the power output shaft of motor 2 is connected to the fifth driven wheel 603, the power output by motor 2 can also be transmitted to the input shaft 4 via the fifth driven wheel 603 and the fifth driving wheel 405. The power transmitted to the input shaft 4 can be transmitted to the differential 11 via the power transmission routes of the first gear, second gear, third gear, fourth gear and ultra-low speed gear when the engine 1 is driven alone, thereby realizing a variety of different gear modes.

[0128] In addition, it should be noted that, in the various gear modes given above, in engine drive mode, the ultra-low speed gear corresponds to the first gear. The only difference between the two is that in the first gear, power is transmitted to the differential 11 via the first gear 802 and the fifth synchronizer 1002 after being transmitted to the fifth intermediate shaft 8, while in the ultra-low speed gear, power is transmitted to the differential 11 via the planetary gear mechanism 9, the second gear 1001, and the fifth synchronizer 1002 after being transmitted to the fifth intermediate shaft 8.

[0129] However, besides the two gear modes mentioned above, the other gear modes also have their own corresponding ultra-low speed gears. The only difference is that after power is transmitted to the fifth intermediate shaft 8, the power is not transmitted to the differential 11 via the first gear 802 and the fifth synchronizer 1002. Instead, similar to the aforementioned ultra-low speed gears, after power is transmitted to the fifth intermediate shaft 8, it is transmitted to the differential 11 via the planetary gear mechanism 9, the second gear mechanism 1001, and the fifth synchronizer 1002.

[0130] The vehicle drive system of the present invention, by setting the control mechanism at the power output end of the engine 1 and controlling the power connection and disconnection between the input shaft 4 and the power output end of the engine 1, can realize multiple drive modes such as engine 1 driving alone, motor 2 driving alone, and engine 1 and motor 2 driving together, and has multiple gear modes in each drive mode.

[0131] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transmission, characterized in that: It includes an input shaft (4), a first transmission component, a second transmission component, a third transmission component, a fourth transmission component, a speed conversion device, a first intermediate shaft (5), a second intermediate shaft (6), and an output shaft (10); it also includes a motor (2); the first intermediate shaft (5) is connected to the input shaft (4) through the first transmission component and the second transmission component respectively; The third transmission component is connected to the first transmission component and is disposed on the second intermediate shaft (6); The second intermediate shaft (6) is selectively connected to the input shaft (4) via the fourth transmission component. The output shaft (10) is connected to the first intermediate shaft (5) via the speed conversion device; The fourth transmission component includes a fifth driving wheel (405) disposed on the input shaft (4), a fifth driven wheel (603) disposed on the second intermediate shaft (6), and a fourth synchronizer (606). The fourth synchronizer (606) is used to selectively connect the fifth driven wheel (603). The fifth driving wheel (405) and the fifth driven wheel (603) are connected by a transmission. The second intermediate shaft (6) is provided with a sixth driven wheel (604), and the power output shaft of the motor (2) is connected to the sixth driven wheel (604); The fourth synchronizer (606) is used to selectively connect the sixth driven wheel (604), which is loosely fitted on the second intermediate shaft (6); The first transmission component includes a first drive wheel (401), a second drive wheel (402), a first synchronizer (406) for selectively connecting the first drive wheel (401) or the second drive wheel (402), a first driven wheel (501) and a second driven wheel (502). The first drive wheel (401), the second drive wheel (402), and the first synchronizer (406) are all mounted on the input shaft (4); The first driven wheel (501) and the second driven wheel (502) are both mounted on the first intermediate shaft (5); The first driving wheel (401) and the first driven wheel (501) are connected by a drive, and the second driving wheel (402) and the second driven wheel (502) are connected by a drive. The third transmission component includes a seventh drive wheel (601), an eighth drive wheel (602) disposed on the second intermediate shaft (6), and a third synchronizer (605) for selectively connecting the seventh drive wheel (601) or the eighth drive wheel (602); the third synchronizer (605) is fixed on the second intermediate shaft (6); The seventh driving wheel (601) is connected to the first driven wheel (501) in a driving connection, and the eighth driving wheel (602) is connected to the second driven wheel (502) in a driving connection.

2. The transmission according to claim 1, characterized in that: The second transmission component includes a third driving wheel (403) and a fourth driving wheel (404) disposed on the input shaft (4), a third driven wheel (503), a fourth driven wheel (504) disposed on the first intermediate shaft (5), and a second synchronizer (505). The third driving wheel (403) and the third driven wheel (503) are connected by a drive, and the fourth driving wheel (404) and the fourth driven wheel (504) are connected by a drive. The second synchronizer (505) is used to selectively connect the third driven wheel (503) or the fourth driven wheel (504).

3. The transmission according to claim 1, characterized in that: It also includes a third intermediate shaft (7) and a third intermediate wheel (701) disposed on the third intermediate shaft (7); The motor (2) has a sixth drive wheel (201) on its power output shaft. The third intermediate wheel (701) is connected to the sixth driving wheel (201) in a driving connection, and the third intermediate wheel (701) is connected to the sixth driven wheel (604) or the fifth driven wheel (603) in a driving connection.

4. The transmission according to any one of claims 1-3, characterized in that: The speed conversion device includes a fifth intermediate shaft (8), which is connected to the first intermediate shaft (5) in a transmission manner; The fifth intermediate shaft (8) is provided with a fifth transmission component and a sixth transmission component; The output shaft (10) is provided with a first control mechanism that selectively connects to the fifth transmission component or the sixth transmission component.

5. The transmission according to claim 4, characterized in that: The fifth transmission component includes a first gear (802) disposed on the fifth intermediate shaft (8). The output shaft (10) is provided with a second gear (1001), and the second gear (1001) is connected to the sixth transmission component. The first control mechanism includes a fifth synchronizer (1002) for connecting the first gear (802) or the second gear (1001).

6. The transmission according to claim 5, characterized in that: The sixth transmission component includes a planetary gear mechanism (9); The sun gear (901) of the planetary gear mechanism (9) is located on the fifth intermediate shaft (8); The gear ring (903) or planet carrier (904) of the planetary gear mechanism (9) is connected to the second gear (1001); The fifth intermediate shaft (8) and the output shaft (10) are arranged coaxially.

7. A vehicle drive system, characterized in that: The transmission comprising any one of claims 1-6 further comprises an engine (1) and a clutch (3). The clutch (3) is located between the power output end of the engine (1) and the input shaft (4), and the clutch (3) is used to control the power supply between the input shaft (4) and the power output end of the engine (1).

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