Transmission structure, drive system and vehicle

Abstract

This article discloses a transmission structure, drive system, and vehicle. The transmission structure includes an engine, a first motor, a second motor, and an intermediate shaft system. A first motor input gear is provided on the input shaft of the first motor. The engine is connected to an engine input gear shaft, on which a transmission gear set is provided. The first motor input gear meshes with the transmission gear set. The transmission gear set is also configured to mesh with the intermediate shaft system. A second motor first gear and a second motor second gear are connected to the input shaft of the second motor. Both the second motor first gear and the second motor second gear mesh with the intermediate shaft system. The intermediate shaft system is also configured to be transmission-connected to a differential assembly. The transmission structure disclosed herein can provide sufficient torque during vehicle startup, while maintaining a compact overall transmission size.

Description

Technical Field

[0001] The present application relates to, but is not limited to, transmission technology, and in particular to a transmission structure, a drive system, and a vehicle. Background Art

[0002] With rising vehicle emission standards, fuel-powered vehicles will find it difficult to meet them. Hybrid vehicles will be a path to reducing emissions and improving efficiency. Furthermore, hybrid vehicles offer the advantages of both fuel-powered and electric vehicles, making them irreplaceable. Therefore, designing a hybrid-specific transmission assembly that is low-cost, highly efficient, lightweight, and compact is crucial.

[0003] Hybrid-specific transmissions have evolved from the initial single-motor auxiliary drive to the current dual-motor system with motors serving more as the main drive. Motors have become increasingly important. Currently, the mainstream hybrid transmissions of various OEMs include both single-motor and dual-motor types, among which dual-motor hybrid transmissions have more obvious advantages.

[0004] Currently, dual-motor hybrid transmissions on the market generally use one motor for driving and the other for generating electricity, with a clear division of labor. However, this structure has a major drawback: the high output torque required during vehicle launch, and to meet the required output torque from a single motor, the motor must be larger, increasing the weight and cost of the transmission assembly. Summary of the Invention

[0005] The embodiments of the present application provide a transmission structure, a drive system, and a vehicle, which can provide sufficient torque during the vehicle's starting phase, and the overall size of the transmission is small.

[0006] An embodiment of the present application provides a transmission structure, the transmission structure including an engine, a first motor, a second motor and an intermediate shaft system;

[0007] A first motor input gear is provided on the input shaft of the first motor;

[0008] The engine is connected to an engine input gear shaft, on which a transmission gear set is provided, and the first motor input gear is meshed with the transmission gear set for transmission; the transmission gear set is also configured to be meshed with the intermediate shaft system for transmission;

[0009] The input shaft of the second motor is connected to a first gear gear of the second motor and a second gear gear of the second motor, and both the first gear gear of the second motor and the second gear gear of the second motor are meshed with the intermediate shaft system for transmission;

[0010] The intermediate shaft system is also configured to be in driving connection with the differential assembly.

[0011] In an exemplary embodiment, the transmission gear set includes an engine first gear, an engine second gear, and an engine third gear;

[0012] The first gear of the engine, the second gear of the engine and the third gear of the engine are all meshed with the intermediate shaft system for transmission;

[0013] The third gear of the engine is also meshed with the first motor input gear for transmission.

[0014] In an exemplary embodiment, the transmission structure further includes a first synchronizer disposed on the engine input gear shaft;

[0015] The engine first gear and the engine second gear are sleeved on the engine input gear shaft, and an annular gap is provided between the engine first gear and the engine second gear and the engine input gear shaft;

[0016] The first synchronizer is configured to cooperate with the engine first gear and the engine second gear, so that the engine input gear shaft drives the engine first gear or the engine second gear to rotate.

[0017] In an exemplary embodiment, the intermediate shaft system includes an intermediate shaft and an intermediate shaft first gear gear, an intermediate shaft second gear gear, an intermediate shaft third gear gear, and an intermediate shaft output gear disposed on the intermediate shaft;

[0018] The first gear gear of the intermediate shaft is meshed with the first gear gear of the engine and the first gear gear of the second motor for transmission; the second gear gear of the intermediate shaft is meshed with the second gear gear of the engine and the second gear gear of the second motor for transmission; the third gear gear of the intermediate shaft is meshed with the third gear gear of the engine for transmission; and the output gear of the intermediate shaft is transmission-connected to the differential assembly.

[0019] In an exemplary embodiment, the transmission structure further includes a first clutch disposed between the intermediate shaft third gear and the intermediate shaft output gear, the intermediate shaft third gear being sleeved on the intermediate shaft, and an annular gap being disposed between the intermediate shaft third gear and the intermediate shaft;

[0020] The first clutch is configured to connect or disconnect the intermediate shaft third speed gear and the intermediate shaft output gear.

[0021] In an exemplary embodiment, the diameter of the first gear of the engine is smaller than the diameter of the second gear of the engine, and the diameter of the second gear of the engine is smaller than the diameter of the third gear of the engine;

[0022] The diameter of the intermediate shaft first gear gear is greater than the diameter of the intermediate shaft second gear gear, and the diameter of the intermediate shaft second gear gear is greater than the diameter of the intermediate shaft third gear gear;

[0023] The diameter of the first gear of the second motor is smaller than the diameter of the second gear of the second motor.

[0024] In an exemplary embodiment, the transmission structure further includes a ring gear, wherein the ring gear is meshed with the intermediate shaft output gear and is connected to the differential assembly.

[0025] In an exemplary embodiment, the transmission structure further includes a second synchronizer disposed on the input shaft of the second motor;

[0026] The first gear of the second motor and the second gear of the second motor are sleeved on the input shaft of the second motor, and an annular gap is provided between the first gear of the second motor and the second gear of the second motor and the input shaft of the second motor;

[0027] The second synchronizer is configured to cooperate with the first gear gear of the second motor and the second gear gear of the second motor, so that the input shaft of the second motor drives the first gear gear of the second motor or the second gear gear of the second motor to rotate.

[0028] In an exemplary embodiment, the transmission structure further includes a second clutch disposed between the engine and the engine input gear shaft, wherein the second clutch is configured to couple or disconnect the engine and the engine input gear shaft.

[0029] An embodiment of the present application also provides a drive system, which includes the aforementioned transmission structure.

[0030] An embodiment of the present application also provides a vehicle, which includes the aforementioned drive system.

[0031] Compared with some technologies, this application has the following advantages:

[0032] In the transmission structure provided in the embodiment of the present application, the input gear of the first motor and the first and second gears of the second motor are all meshed and transmitted with the intermediate shaft system, and then connected to the subsequent differential assembly. That is, the first motor and the second motor can simultaneously drive the differential assembly to provide torque; during the vehicle's starting phase, the first motor and the second motor jointly provide torque to achieve the torque required by the vehicle, reducing the vehicle's output torque requirement for a single motor, thereby reducing the size of the two motors, and thereby reducing the weight and cost of the transmission assembly.

[0033] The drive system provided in the embodiment of the present application has the aforementioned transmission structure, has strong power, occupies little space on the vehicle, and is highly practical.

[0034] The vehicle provided in the embodiment of the present application has the aforementioned drive system, and the vehicle has strong power both in the starting phase and the normal driving phase, thereby reducing the weight and manufacturing cost of the entire vehicle.

[0035] Other features and advantages of the present application will be set forth in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0037] Figure 1 This is a schematic diagram of the transmission structure described in an embodiment of the present application.

[0038] Illustration:

[0039] 1-first motor, 11-first motor input gear, 2-second motor, 21-second motor first gear gear, 22-second motor second gear gear, 23-second synchronizer, 3-engine, 31-engine first gear gear, 32-engine second gear gear, 33-engine third gear gear, 34-engine input gear shaft, 35-first synchronizer, 36-second clutch, 4-intermediate shaft system, 41-intermediate shaft first gear gear, 42-intermediate shaft second gear gear, 43-intermediate shaft third gear gear, 44-intermediate shaft, 45-intermediate shaft output gear, 46-first clutch, 5-ring gear, 6-differential assembly. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0041] The embodiment of the present application provides a transmission structure, such as Figure 1 As shown, the transmission structure includes an engine 3, a first motor 1, a second motor 2 and an intermediate shaft system 4; a first motor input gear 11 is provided on the input shaft of the first motor 1; the engine 3 is connected to the engine input gear shaft 34, and a transmission gear set is provided on the engine input gear shaft 34, and the first motor input gear 11 is meshed with the transmission gear set for transmission; the transmission gear set is also configured to be meshed with the intermediate shaft system 4 for transmission; the second motor first gear 21 and the second motor second gear 22 are connected to the input shaft of the second motor 2, and the second motor first gear 21 and the second motor second gear 22 are both meshed with the intermediate shaft system 4 for transmission; the intermediate shaft system 4 is also configured to be transmission-connected to the differential assembly 6.

[0042] At the same time, only one of the second motor first gear 21 and the second motor second gear 22 is meshed with the intermediate shaft system 4 to avoid interference in the torque transmission to the intermediate shaft system 4. Of course, the above problem can also be solved by providing a clutch in the intermediate shaft system 4.

[0043] When only the engine 3 provides power (torque), the vehicle is in the engine 3 direct drive mode; when the first motor 1 and / or the second motor 2 provide power, the vehicle is in the pure electric drive mode; when the engine 3 and at least one motor provide power together, the vehicle is in the hybrid drive mode.

[0044] First motor 1 primarily generates electricity, powering the vehicle's battery or second motor 2. Second motor 2 primarily provides drive, providing torque. During vehicle launch, both first and second motors 1 and 2 simultaneously output power to intermediate shaft system 4, which in turn drives the wheels via differential assembly 6. This provides sufficient torque for launch, reducing the torque requirement of a single motor.

[0045] The transmission structure provided in the embodiment of the present application can not only realize the pure electric drive, series connection, parallel connection, engine 3 direct drive and other modes of the current mainstream dual-motor hybrid system, but also realize the simultaneous drive output of dual motors, thereby reducing the motor size, improving the drive efficiency and reducing the cost.

[0046] The transmission solution provided in the embodiment of the present application can achieve that when a larger torque demand is required in the starting stage, the two motors (the first motor 1 and the second motor 2) both output torque, thereby effectively reducing the size of the motors while ensuring the acceleration performance of the entire vehicle; at the same time, the two motors are power coupled through the intermediate shaft system 4, achieving an overall compact axial space.

[0047] In an exemplary embodiment, Figure 1 As shown, the transmission gear set includes an engine first gear gear 31, an engine second gear gear 32 and an engine third gear gear 33; the engine first gear gear 31, the engine second gear gear 32 and the engine third gear gear 33 are all meshed with the intermediate shaft system 4; the engine third gear gear 33 is also meshed with the first motor input gear 11.

[0048] The engine 3 drives the first motor input gear 11 to rotate via the engine third gear 33 , thereby driving the first motor 1 to generate electricity.

[0049] At the same time, one of the engine first gear 31 and the engine second gear 32 is meshed with the intermediate shaft system 4 to avoid interference with the torque transmission to the intermediate shaft system 4. Of course, the above problem can also be solved by arranging a clutch in the intermediate shaft system 4.

[0050] The engine first gear 31 , the engine second gear 32 and the engine third gear 33 are respectively meshed with the intermediate shaft system 4 to provide different torques to the intermediate shaft system 4 to meet the torque requirements of the vehicle under different working conditions.

[0051] In an exemplary embodiment, Figure 1 As shown, the transmission structure also includes a first synchronizer 35 arranged on the engine input gear shaft 34; the engine first gear gear 31 and the engine second gear gear 32 are sleeved on the engine input gear shaft 34, and an annular gap is provided between the engine first gear gear 31 and the engine second gear gear 32 and the engine input gear shaft 34; the first synchronizer 35 is configured to cooperate with the engine first gear gear 31 and the engine second gear gear 32 so that the engine input gear shaft 34 drives the engine first gear gear 31 or the engine second gear gear 32 to rotate.

[0052] By arranging the first synchronizer 35 on the engine input gear shaft 34 , it can be ensured that at the same time, one of the engine first gear 31 and the engine second gear 32 is meshed and transmitted with the intermediate shaft system 4 to avoid interference in the torque transmission to the intermediate shaft system 4 .

[0053] The engine first gear gear 31 and the engine second gear gear 32 are sleeved on the engine input gear shaft 34, and an annular gap is provided between the engine first gear gear 31 and the engine second gear gear 32 and the engine input gear shaft 34, that is, the engine first gear gear 31 and the engine second gear gear 32 are both sleeved on the engine input gear shaft 34, and the engine input gear shaft 34 cannot directly drive the engine first gear gear 31 and the engine second gear gear 32 to rotate. A first synchronizer 35 is provided on the engine input gear shaft 34, and the first synchronizer 35 has three positions: left, middle and right. When the first synchronizer 35 is in the middle position, the first synchronizer 35 does not contact the engine first gear gear 31 and the engine second gear gear 32. When the first synchronizer 35 is in the left position, the first synchronizer 35 cooperates with the engine first gear gear 31, and the engine input gear shaft 34 drives the engine first gear gear 31 to rotate through the first synchronizer 35. When the first synchronizer 35 is in the right position, the first synchronizer 35 cooperates with the engine second gear gear 32, and the engine input gear shaft 34 drives the engine second gear gear 32 to rotate through the first synchronizer 35.

[0054] The engine third gear 33 is fixedly connected to the engine input gear shaft 34 and always rotates together with the engine input gear shaft 34 .

[0055] In an exemplary embodiment, Figure 1As shown, the intermediate shaft system 4 includes an intermediate shaft 44 and an intermediate shaft first gear gear 41, an intermediate shaft second gear gear 42, an intermediate shaft third gear gear 43, and an intermediate shaft output gear 45 arranged on the intermediate shaft 44; the intermediate shaft first gear gear 41 is meshed with the engine first gear gear 31 and the second motor first gear gear 21 for transmission, the intermediate shaft second gear gear 42 is meshed with the engine second gear gear 32 and the second motor second gear gear 22 for transmission, the intermediate shaft third gear gear 43 is meshed with the engine third gear gear 33 for transmission, and the intermediate shaft output gear 45 is transmission-connected to the differential assembly 6.

[0056] In the cooperation between the three gears on the engine input gear shaft 34 and the intermediate shaft system 4: the engine first gear gear 31 is meshed with the intermediate shaft first gear gear 41 for transmission, the engine second gear gear 32 is meshed with the intermediate shaft second gear gear 42 for transmission, and the engine third gear gear 33 is meshed with the intermediate shaft third gear gear 43 for transmission.

[0057] In the cooperation between the two gears on the input shaft of the second motor 2 and the intermediate shaft system 4: the second motor first gear gear 21 and the intermediate shaft first gear gear 41 are meshed for transmission, and the second motor second gear gear 22 and the intermediate shaft second gear gear 42 are meshed for transmission.

[0058] The torque transmitted to the intermediate shaft system 4 is transmitted to the differential assembly 6 via the intermediate shaft output gear 45, thereby driving the vehicle forward.

[0059] In an exemplary embodiment, Figure 1 As shown, the transmission structure also includes a first clutch 46 arranged between the intermediate shaft third gear 43 and the intermediate shaft output gear 45. The intermediate shaft third gear 43 is sleeved on the intermediate shaft 44, and an annular gap is provided between the intermediate shaft third gear 43 and the intermediate shaft 44; the first clutch 46 is configured to connect or disconnect the intermediate shaft third gear 43 and the intermediate shaft output gear 45.

[0060] The intermediate shaft third gear 43 is sleeved on the intermediate shaft 44, and an annular gap is provided between the intermediate shaft third gear 43 and the intermediate shaft 44, that is, the intermediate shaft third gear 43 is loosely sleeved on the intermediate shaft 44, and the intermediate shaft 44 cannot directly drive the intermediate shaft third gear 43 to rotate.

[0061] A first clutch 46 is provided between the intermediate shaft third gear 43 and the intermediate shaft output gear 45 . When the first clutch 46 is engaged, the intermediate shaft output gear 45 and the intermediate shaft third gear 43 are axially coupled, and the intermediate shaft third gear 43 drives the intermediate shaft output gear 45 to rotate through the intermediate shaft 44 .

[0062] Since the aforementioned engine third gear 33 is fixedly connected to the engine input gear shaft 34 and always rotates together with the engine input gear shaft 34, and the engine third gear 33 is always engaged with the intermediate shaft third gear 43, a first clutch 46 is provided between the intermediate shaft third gear 43 and the intermediate shaft output gear 45 to disconnect the intermediate shaft third gear 43 from the intermediate shaft 44, thereby avoiding interference caused by the intermediate shaft 44 being driven to rotate when the intermediate shaft third gear 43 does not transmit torque.

[0063] In an exemplary embodiment, Figure 1 As shown, the diameter of the engine first gear gear 31 is smaller than the diameter of the engine second gear gear 32, and the diameter of the engine second gear gear 32 is smaller than the diameter of the engine third gear gear 33; the diameter of the intermediate shaft first gear gear 41 is larger than the diameter of the intermediate shaft second gear gear 42, and the diameter of the intermediate shaft second gear gear 42 is larger than the diameter of the intermediate shaft third gear gear 43; the diameter of the second motor first gear gear 21 is smaller than the diameter of the second motor second gear gear 22.

[0064] The diameters of the gears are different to distinguish the different gears of the vehicle, making it easier for users to adjust the gears according to their needs.

[0065] In an exemplary embodiment, Figure 1 As shown, the transmission structure further includes a ring gear 5 , which is meshed with the intermediate shaft output gear 45 and connected to the differential assembly 6 .

[0066] The intermediate shaft output gear 45 transmits power to the differential assembly 6 through the ring gear 5. The ring gear 5 and the differential assembly 6 are connected by bolts or welding.

[0067] In an exemplary embodiment, Figure 1 As shown, the transmission structure also includes a second synchronizer 23 arranged on the input shaft of the second motor 2; the second motor first gear 21 and the second motor second gear 22 are sleeved on the input shaft of the second motor 2, and an annular gap is provided between the second motor first gear 21 and the second motor second gear 22 and the input shaft of the second motor 2; the second synchronizer 23 is configured to cooperate with the second motor first gear 21 and the second motor second gear 22, so that the input shaft of the second motor 2 drives the second motor first gear 21 or the second motor second gear 22 to rotate.

[0068] By arranging a second synchronizer 23 on the input shaft of the second motor 2, it can be ensured that at the same time, one of the second motor first gear 21 and the second motor second gear 22 is engaged and transmitted with the intermediate shaft system 4 to avoid interference in the torque transmission to the intermediate shaft system 4.

[0069] The second motor first gear 21 and the second motor second gear 22 are both sleeved on the input shaft of the second motor 2, and an annular gap is provided between the second motor first gear 21 and the second motor second gear 22 and the input shaft of the second motor 2, that is, the second motor first gear 21 and the second motor second gear 22 are both loosely sleeved on the input shaft of the second motor 2, and the input shaft of the second motor 2 cannot directly drive the second motor first gear 21 and the second motor second gear 22 to rotate. A second synchronizer 23 is provided on the input shaft of the second motor 2, and the second synchronizer 23 has three positions: left, middle and right; when the second synchronizer 23 is in the middle position, the second synchronizer 23 does not contact the second motor first gear 21 and the second motor second gear 22; when the second synchronizer 23 is in the left position, the second synchronizer 23 cooperates with the second motor first gear 21, and the input shaft of the second motor 2 drives the second motor first gear 21 to rotate through the second synchronizer 23; when the second synchronizer 23 is in the right position, the second synchronizer 23 cooperates with the second motor second gear 22, and the input shaft of the second motor 2 drives the second motor second gear 22 to rotate through the second synchronizer 23.

[0070] In an exemplary embodiment, Figure 1 As shown, the transmission structure further includes a second clutch 36 disposed between the engine 3 and the engine input gear shaft 34 , and the second clutch 36 is configured to couple or disconnect the engine 3 and the engine input gear shaft 34 .

[0071] When the engine 3 does not provide torque, that is, the torque is provided by the first motor 1 and / or the second motor 2, and the vehicle is in pure electric drive mode, the second clutch 36 disconnects the engine 3 and the engine 3 output gear shaft to prevent the engine 3 output gear shaft from driving the engine 3 to idle, thereby reducing power loss and improving vehicle endurance.

[0072] The following describes the torque transmission paths of each gear of the first motor 1, the second motor 2, and the engine 3. It should be understood that in different driving modes, multiple torque transmission paths may exist simultaneously.

[0073] Torque transmission path when engine 3 generates electricity:

[0074] Output end of engine 3 — second clutch 36 — engine input gear shaft 34 — engine third gear gear 33 — first motor input gear 11 — first motor 1 .

[0075] Engine 3 drives the first gear torque transmission path:

[0076] Output end of engine 3 — second clutch 36 — engine input gear shaft 34 — first synchronizer 35 — engine first gear 31 — intermediate shaft first gear 41 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0077] Engine 3 drives the second gear torque transmission path:

[0078] Output end of engine 3 — second clutch 36 — engine input gear shaft 34 — first synchronizer 35 — engine second gear 32 — intermediate shaft second gear 42 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0079] Engine 3 drives the third gear torque transmission path:

[0080] Output end of engine 3 — second clutch 36 — engine input gear shaft 34 — engine third gear 33 — intermediate shaft third gear 43 — first clutch 46 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0081] The first motor 1 drives the first gear torque transmission path:

[0082] First motor 1 — first motor input gear 11 — engine third gear gear 33 — engine input gear shaft 34 — first synchronizer 35 — engine first gear gear 31 — intermediate shaft first gear gear 41 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0083] The first motor 1 drives the second gear torque transmission path:

[0084] First motor 1 — first motor input gear 11 — engine third gear gear 33 — engine input gear shaft 34 — first synchronizer 35 — engine second gear gear 32 — intermediate shaft second gear gear 42 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0085] The first motor 1 drives the third gear torque transmission path:

[0086] First motor 1 —first motor input gear 11 —engine third-speed gear 33 —intermediate shaft third-speed gear 43 —first clutch 46 —intermediate shaft output gear 45 —ring gear 5 —differential assembly 6 .

[0087] The second motor 2 drives the first gear torque transmission path:

[0088] Second motor 2 — second synchronizer 23 — second motor first gear 21 — intermediate shaft first gear 41 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0089] The second motor 2 drives the second gear torque transmission path:

[0090] Second motor 2 — second synchronizer 23 — second motor second gear 22 — intermediate shaft second gear 42 — intermediate shaft 44 — intermediate shaft output gear 45 — ring gear 5 — differential assembly 6 .

[0091] The following table illustrates the states of the first clutch 46, the second clutch 36, the first synchronizer 35 and the second synchronizer 23 in each driving mode:

[0092]

[0093]

[0094]

[0095] In the table above, a "-" sign indicates the clutch is disengaged, and a "+" sign indicates the clutch is engaged. "Left" indicates the left synchronizer tooth is engaged, "Center" indicates neither synchronizer tooth is engaged, and "Right" indicates the right synchronizer tooth is engaged. MG1 represents the first motor, MG2 represents the second motor, and ICE represents the engine.

[0096] The three-speed dual-motor hybrid powertrain system solution provided in the embodiment of the present application can achieve three-speed output of the engine, and the two motors simultaneously output torque through pure electric drive, effectively reducing the torque demand of a single motor drive and reducing costs. The multi-link gear pair achieves more gear output with a minimum number of gears, effectively improving the assembly efficiency, achieving a compact structural layout, and a high overall success rate density.

[0097] The arrangement of three gears driven by the engine, two gears driven by the second motor and three gears driven by the first motor is realized with a minimum number of gear shafts and shafts, which has a compact structure and low cost.

[0098] An embodiment of the present application also provides a drive system, which includes the aforementioned transmission structure.

[0099] The drive system provided in the embodiment of the present application has the aforementioned transmission structure, has strong power, occupies little space on the vehicle, and is highly practical.

[0100] An embodiment of the present application also provides a vehicle, which includes the aforementioned drive system.

[0101] The vehicle provided in the embodiment of the present application has the aforementioned drive system, and the vehicle has strong power both in the starting phase and the normal driving phase, thereby reducing the weight and manufacturing cost of the entire vehicle.

[0102] In the description of this application, it should be noted that the orientations or positional relationships indicated by “upper”, “lower”, “one end”, “one side”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0103] In the description of the embodiments of this application, unless otherwise expressly specified or limited, the terms "connect," "assemble," and "install" should be understood in a broad sense. For example, the term "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0104] The embodiments described herein are exemplary rather than restrictive, and it will be apparent to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described herein. Although many possible feature combinations are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0105] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique technical solution defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other technical solutions to form another unique technical solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application may be implemented individually or in any appropriate combination. Therefore, the embodiments are not subject to other limitations except for the limitations set forth in the appended claims and their equivalents. In addition, various modifications and changes may be made within the scope of protection of the appended claims.

Claims

1. A transmission structure, characterized in that: It includes an engine, a first motor, a second motor and an intermediate shaft system; A first motor input gear is provided on the input shaft of the first motor; The engine is connected to an engine input gear shaft, on which a transmission gear set is provided, and the first motor input gear is meshed with the transmission gear set for transmission; the transmission gear set is also configured to be meshed with the intermediate shaft system for transmission; The input shaft of the second motor is connected to a first gear gear of the second motor and a second gear gear of the second motor, and both the first gear gear of the second motor and the second gear gear of the second motor are meshed with the intermediate shaft system for transmission; The intermediate shaft system is also configured to be transmission-connected to the differential assembly; The transmission gear set includes an engine first gear, an engine second gear, and an engine third gear; the engine first gear, the engine second gear, and the engine third gear are all configured to mesh with the intermediate shaft system; the engine third gear is also meshed with the first motor input gear; The intermediate shaft system includes an intermediate shaft and an intermediate shaft first gear gear, an intermediate shaft second gear gear, an intermediate shaft third gear gear, and an intermediate shaft output gear arranged on the intermediate shaft; the intermediate shaft first gear gear is meshed with the engine first gear gear and the second motor first gear gear, the intermediate shaft second gear gear is meshed with the engine second gear gear and the second motor second gear gear, the intermediate shaft third gear gear is meshed with the engine third gear gear, and the intermediate shaft output gear is transmission-connected to the differential assembly.

2. The transmission structure according to claim 1, characterized in that: Also included is a first synchronizer disposed on the engine input gear shaft; The engine first gear and the engine second gear are sleeved on the engine input gear shaft, and an annular gap is provided between the engine first gear and the engine second gear and the engine input gear shaft; The first synchronizer is configured to cooperate with the engine first gear and the engine second gear, so that the engine input gear shaft drives the engine first gear or the engine second gear to rotate.

3. The transmission structure according to claim 1, characterized in that: It also includes a first clutch disposed between the intermediate shaft third gear and the intermediate shaft output gear, wherein the intermediate shaft third gear is sleeved on the intermediate shaft, and an annular gap is provided between the intermediate shaft third gear and the intermediate shaft; The first clutch is configured to connect or disconnect the intermediate shaft third speed gear and the intermediate shaft output gear.

4. The transmission structure according to claim 1, characterized in that: The diameter of the first gear of the engine is smaller than the diameter of the second gear of the engine, and the diameter of the second gear of the engine is smaller than the diameter of the third gear of the engine; The diameter of the intermediate shaft first gear gear is greater than the diameter of the intermediate shaft second gear gear, and the diameter of the intermediate shaft second gear gear is greater than the diameter of the intermediate shaft third gear gear; The diameter of the first gear of the second motor is smaller than the diameter of the second gear of the second motor.

5. The transmission structure according to claim 1, characterized in that: It also includes a ring gear, which is meshed with the intermediate shaft output gear and connected to the differential assembly.

6. The transmission structure according to any one of claims 1 to 5, characterized in that: Also included is a second synchronizer disposed on the input shaft of the second motor; The first gear of the second motor and the second gear of the second motor are sleeved on the input shaft of the second motor, and an annular gap is provided between the first gear of the second motor and the second gear of the second motor and the input shaft of the second motor; The second synchronizer is configured to cooperate with the first gear gear of the second motor and the second gear gear of the second motor, so that the input shaft of the second motor drives the first gear gear of the second motor or the second gear gear of the second motor to rotate.

7. The transmission structure according to any one of claims 1 to 5, characterized in that: The invention also includes a second clutch provided between the engine and the engine input gear shaft, wherein the second clutch is configured to connect or disconnect the engine and the engine input gear shaft.

8. A drive system, characterized in that: The invention comprises a transmission structure as claimed in any one of claims 1 to 7.

9. A vehicle, characterized in that: Comprising the drive system as claimed in claim 8.

Images