Driving system and vehicle

Abstract

The invention provides a driving system and a vehicle, and the driving system comprises a first planetary transmission structure, a second planetary transmission structure, a first brake, a second brake, a third brake, an output transmission part, an engine, an input shaft, a first clutch and a second clutch, the second planet carrier is connected with the first gear ring, the first brake can brake the first sun gear, the third brake can brake the second gear ring, one of the first planet carrier and the first gear ring is connected with the second brake, and the other one of the first planet carrier and the first gear ring is connected with the output transmission piece. Through control over the first brake, the second brake, the third brake, the first clutch and the second clutch, at least five transmission paths of power output by the engine are achieved, the power transmission paths can be switched according to the power requirement when the engine works, and maximum efficiency of operation is achieved.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and mainly to a drive system and a vehicle. Background Art

[0002] In existing hybrid drive systems, electric motors are mainly used for driving, so the power transmission path between the engine and the wheel end is relatively simple, resulting in the engine in the hybrid drive system failing to achieve maximum efficiency when working, and thus the fuel consumption of the entire vehicle failing to be optimized. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a drive system and a vehicle, which increase the power transmission path between the engine and the wheel end, so that the engine can achieve maximum efficiency when working.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A drive system includes a first planetary transmission structure, a second planetary transmission structure, a first brake, a second brake, a third brake, an output transmission member, an engine, an input shaft, a first clutch and a second clutch. The first planetary transmission structure includes a first sun gear, a first planetary carrier and a first ring gear. One of the first planetary carrier and the first ring gear is connected to the second brake, and the other is connected to the output transmission member; the second planetary transmission structure includes a second sun gear, a second planetary carrier and a second ring gear. The second sun gear is connected to the first planetary carrier, and the second planetary carrier is connected to the first ring gear; the first brake is connected to the first sun gear for braking the first sun gear; the third brake is connected to the second ring gear for braking the second ring gear; the input shaft is connected to the engine; the first clutch and the second clutch are arranged on the input shaft, one of the first sun gear and the second ring gear is connected to the first clutch, and one of the first planetary carrier and the first ring gear connected to the second brake is connected to the second clutch.

[0006] In some embodiments of the present application, the first ring gear is connected to the second brake, and the first planetary carrier is in transmission connection with the output transmission member; the first clutch is connected to the first sun gear, and the second clutch is connected to the first ring gear.

[0007] In some embodiments of the present application, the first planetary carrier is connected to the second brake, and the first ring gear is transmission-connected to the output transmission member; the first clutch is connected to the second ring gear, and the second clutch is connected to the first planetary carrier.

[0008] In some embodiments of the present application, the second planetary transmission structure is coaxially arranged with the first planetary transmission structure; the first sun gear and the second sun gear are both mounted on the input shaft, and the first sun gear and the second sun gear can both rotate relative to the axis of the input shaft.

[0009] In some embodiments of the present application, the drive system further includes a first motor connected to the output transmission member.

[0010] In some embodiments of the present application, the output transmission member includes an intermediate shaft, a first gear, a second gear and a differential. The first gear and the second gear are both fixed on the intermediate shaft. The first gear is connected to the first motor, and the second gear is connected to the differential. The differential is used to connect to an external wheel end.

[0011] In some embodiments of the present application, the drive system further includes a second motor, which is drivingly connected to the input shaft.

[0012] In some embodiments of the present application, a fourth gear is provided on the output shaft of the second motor, a third gear is provided on the input shaft, and the third gear is engaged with the fourth gear; the diameter of the fourth gear is greater than the diameter of the third gear.

[0013] In some schemes of the present application, the operating modes of the drive system include at least: the first clutch and the second brake are in an engaged state, the second clutch, the first brake and the third brake are in a disengaged state, and the power of the engine is transmitted to the output transmission member through the first clutch, the first sun gear, the first planetary gear and the first planetary carrier to form engine drive mode 1; the first clutch and the third brake are in an engaged state, the second clutch, the first brake and the third brake are in a disengaged state, and the power of the engine is divided into two paths after passing through the first clutch, the first sun gear and the first planetary gear, one of which is directly transmitted to the output transmission member through the first planetary carrier, and the other is transmitted to the output transmission member through the first ring gear, the second planetary carrier, the second sun gear and the first planetary carrier to form engine drive mode 2; the second clutch and the first brake are in an engaged state, the second clutch, the second brake and the third brake are in a disengaged state, and the power of the engine is divided into two paths after passing through the second clutch and the second planetary carrier, one of which is transmitted to the output transmission member through the first ring gear, the first planetary gear and the first planetary carrier, and the other is transmitted to the output transmission member through the first ring gear, the second planetary carrier, the second sun gear and the first planetary carrier The second planetary gear, the second sun gear, and the first planetary carrier are transmitted to the output transmission member, thereby establishing Engine Drive Mode 3. The first and second clutches are engaged, and the first, second, and third brakes are disengaged. The engine power is split into two paths at the input shaft: one path is transmitted to the output transmission member through the first clutch, the first sun gear, the first planetary gear, and the first planetary carrier, while the other path is further split into two paths after passing through the second clutch and the second planetary carrier. One path is transmitted to the output transmission member through the second planetary gear, the second sun gear, and the first planetary carrier, while the other path is transmitted to the output transmission member through the first ring gear, the first planetary gear, and the first planetary carrier, thereby establishing Engine Drive Mode 4. The second clutch and the third brake are engaged, and the first clutch, the first and second brakes, and the second brake are disengaged. The engine power is split into two paths after passing through the second clutch and the second planetary carrier: one path is transmitted to the output transmission member through the first ring gear, the first planetary gear, and the first planetary carrier, while the other path is transmitted to the output transmission member through the second planetary gear, the second sun gear, and the first planetary carrier, thereby establishing Engine Drive Mode 5.

[0014] In some schemes of the present application, the operating modes of the drive system at least include: the second clutch and the first brake are in an engaged state, the first clutch, the second brake and the third brake are in a disengaged state, and the power of the engine is transmitted to the output transmission member through the second clutch, the first planetary carrier, the first planetary gear and the first ring gear to form engine drive mode 1; the second clutch, the first brake and the third brake are in an engaged state, the first clutch and the second brake are in a disengaged state, and the power of the engine is divided into two paths after passing through the second clutch and the first planetary carrier, one of which is directly transmitted to the output transmission member through the first planetary gear and the first ring gear, and the other is transmitted to the output transmission member through the second sun gear, the second planetary gear, the second planetary carrier and the first ring gear to form engine drive mode 2; the first clutch and the second brake are in an engaged state, the second clutch, the first brake and the third brake are in a disengaged state, and the power of the engine is transmitted to the output transmission member through the first clutch, the second ring gear, the second planetary gear, the second planetary carrier and the first ring gear to form engine drive mode 2. Engine Drive Mode 3: The first clutch, the second clutch, and the first brake are engaged, and the second and third brakes are disengaged. The engine power is split into two paths at the input shaft. One path is transmitted to the output transmission member through the first clutch, the second ring gear, the second planetary gear, the second planetary carrier, and the first ring gear. The other path is split into two branches after passing through the second clutch and the first planetary carrier. One branch is transmitted to the output transmission member through the first planetary gear and the first ring gear, and the other branch is transmitted to the output transmission member through the second sun gear, the second planetary gear, the second planetary carrier, and the first ring gear, thereby forming Engine Drive Mode 4. The first clutch and the first brake are engaged, and the second clutch, the second brake, and the third brake are disengaged. The engine power is split into two paths after passing through the first clutch, the second ring gear, and the second planetary gear. One path is transmitted to the output transmission member through the second planetary carrier and the first ring gear, and the other path is transmitted to the output transmission member through the second sun gear, the first planetary carrier, the first planetary gear, and the first ring gear, thereby forming Engine Drive Mode 5.

[0015] A vehicle comprises a vehicle body, a drive system and wheels, wherein the drive system is fixed on the vehicle body and the wheels are connected to the output transmission member.

[0016] Beneficial effects: The drive system of the present application includes a first planetary transmission structure, a second planetary transmission structure, a first brake, a second brake, a third brake, an output transmission member, an engine, an input shaft, a first clutch and a second clutch, which are connected to the first planetary carrier through the second sun gear, and the second planetary carrier is connected to the first ring gear. The first brake can brake the first sun gear, and the third brake can brake the second ring gear. One of the first planetary carrier and the first ring gear is connected to the second brake, and the other is connected to the output transmission member, so that by controlling the first brake, the second brake, the third brake, the first clutch and the second clutch, the power output of the engine has at least 5 transmission paths, and the engine can switch the power transmission path according to the power demand when working to achieve maximum efficiency.

[0017] A vehicle includes the above-mentioned mid-drive system, which enables the vehicle to switch the states of the first brake, the second brake, the third brake, the first clutch and the second clutch according to different road conditions while driving, thereby achieving maximum efficiency of engine operation and improving fuel economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a drive system of embodiment 1.

[0019] Figure 2 yes Figure 1 The diagram shows the structure of the drive system in engine drive mode 1, where the arrow indicates the direction of power transmission.

[0020] Figure 3 yes Figure 1 The diagram shows the structure of the drive system when it is in engine drive mode 2, with the arrow indicating the direction of power transmission.

[0021] Figure 4 yes Figure 1 The diagram shows the structure of the drive system when it is in engine drive mode 3, with the arrow indicating the direction of power transmission.

[0022] Figure 5 yes Figure 1 The diagram shows the structure of the drive system when it is in engine drive mode 4, with the arrow indicating the direction of power transmission.

[0023] Figure 6 yes Figure 1 The diagram shows the structure of the drive system when it is in engine drive mode 5, and the arrow indicates the direction of power transmission.

[0024] Figure 7 It is a structural diagram of the driving system of the second embodiment.

[0025] Figure 8 yes Figure 7 The diagram shows the structure of the drive system in engine drive mode 1, where the arrow indicates the direction of power transmission.

[0026] Figure 9 yes Figure 7 The diagram shows the structure of the drive system when it is in engine drive mode 2, with the arrow indicating the direction of power transmission.

[0027] Figure 10 yes Figure 7 The diagram shows the structure of the drive system when it is in engine drive mode 3, with the arrow indicating the direction of power transmission.

[0028] Figure 11 yes Figure 7 The diagram shows the structure of the drive system when it is in engine drive mode 4, with the arrow indicating the direction of power transmission.

[0029] Figure 12 yes Figure 7 The diagram shows the structure of the drive system when it is in engine drive mode 5, and the arrow indicates the direction of power transmission.

[0030] Explanation of the main component symbols: 11-engine; 12-first motor; 13-second motor; 21-first brake; 22-second brake; 23-third brake; 24-first clutch; 25-second clutch; 3-first planetary transmission structure; 31-first sun gear; 32-first planetary gear; 33-first planetary carrier; 34-first ring gear; 4-second planetary transmission structure; 41-second sun gear; 42-second planetary gear; 43-second planetary carrier; 44-second ring gear; 5-input shaft; 6-output transmission member; 61-intermediate shaft; 62-first gear; 63-second gear; 64-differential; 71-third gear; 72-fourth gear; 73-fifth gear; 74-sixth gear. DETAILED DESCRIPTION

[0031] The present invention provides a drive system and a vehicle. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] A vehicle includes a vehicle body, a drive system, and wheels. The drive system is fixed to the vehicle body, and the wheels are connected to output transmission members of the drive system so that the drive system can drive the wheels to rotate, thereby achieving movement of the vehicle.

[0035] See Figure 1 and Figure 7 The drive system of the present application includes an engine 11, an input shaft 5, a first planetary transmission structure 3, a second planetary transmission structure 4, a first brake 21, a second brake 22, a third brake 23, a first clutch 24, a second clutch 25, and an output transmission member 6. The output transmission member 6 is used for driving connection with the wheels. The input shaft 5 is drivingly connected to the engine 11. The engine 11 can input power, so that the power is transmitted to the output transmission member 6 through the first planetary transmission structure 3 and the second planetary transmission structure 4 to achieve the movement of the vehicle. In one embodiment, the input shaft 5 is directly connected to the output end of the engine 11, thereby reducing the structure of the drive system in the axial direction of the input shaft 5, thereby reducing the axial size of the drive system.

[0036] The first planetary transmission structure 3 includes a first sun gear 31, first planetary gears 32, a first planet carrier 33, and a first ring gear 34. The first ring gear 34 is annular in shape and is disposed circumferentially outside the first sun gear 31, with a mounting space between the inner diameter of the first ring gear 34 and the outer diameter of the first sun gear 31. Multiple first planetary gears 32 are provided, distributed in an annular pattern within the mounting space between the first sun gear 31 and the first ring gear 34. The first planetary gears 32 mesh with both the first sun gear 31 and the first ring gear 34. The first planetary carrier 33 is connected to the first planetary gears 32 and is rotationally connected to the first planet carrier 33. The axes of the first planet carrier 33, the first sun gear 31, and the first ring gear 34 coincide.

[0037] The second planetary transmission structure 4 includes a second sun gear 41, second planetary gears 42, a second planetary carrier 43, and a second ring gear 44. The second ring gear 44 is annular in shape and is disposed circumferentially outside the second sun gear 41, with a mounting space between the inner diameter of the second ring gear 44 and the outer diameter of the second sun gear 41. A plurality of first planetary gears 42 are provided, distributed in an annular pattern within the mounting space between the second sun gear 41 and the second ring gear 44. The second planetary gears 42 mesh with both the second sun gear 41 and the second ring gear 44. The second planetary carrier 43 is connected to the second planetary gears 42 and is rotationally connected to the second planetary carrier 43. The axes of the second planetary carrier 43, the second sun gear 41, and the second ring gear 44 coincide.

[0038] The first planetary transmission structure 3 and the second planetary transmission structure 4 are arranged in parallel and coaxially. The second sun gear 41 is connected to the first planet carrier 33, and the second planet carrier 43 is connected to the first ring gear 34. The first brake 21 is connected to the housing of the drive system and the first sun gear 31 and is used to brake the first sun gear 31. The second brake 22 is provided on the housing of the drive system and is connected to one of the first planet carrier 33 and the first ring gear 34, so that the second brake 22 can brake one of the first planet carrier 33 and the first ring gear 34. The one of the first planet carrier 33 and the first ring gear 34 not connected to the second brake 22 is connected to the output transmission member 6 to achieve power output. The third brake 23 is used to brake the second ring gear 44.

[0039] Among them, the one of the first planetary carrier 33 and the first ring gear 34 that is not connected to the second brake 22 is the structure for power output in the structure composed of the first planetary transmission structure 3 and the second planetary transmission structure 4, that is, the one connected to the output transmission member 6 is the structure for power output in the structure composed of the first planetary transmission structure 3 and the second planetary transmission structure 4.

[0040] exist Figure 1 In the illustrated embodiment, the second brake 22 connects the drive system housing and the first ring gear 34, enabling the second brake 22 to brake the first ring gear 34. The first planetary carrier 33 is connected to the output transmission member 6, enabling the first planetary carrier 33 to output power. A fifth gear 73 is fixed to the first planetary carrier 33 and meshes with the first gear 62 of the output transmission member 6, establishing a transmission connection between the first planetary carrier 33 and the output transmission member 6.

[0041] exist Figure 7In the illustrated embodiment, the second brake 22 connects the drive system housing and the first planetary carrier 33, enabling the second brake 22 to brake the first planetary carrier 33. The first ring gear 34 is connected to the output transmission member 6, enabling the first ring gear 34 to output power. Gear teeth are provided on the circumferential outer side of the first ring gear 34, which mesh with the first gear 62 in the output transmission member 6, establishing a transmission connection between the first ring gear 34 and the output transmission member 6.

[0042] The first clutch 24 and the second clutch 25 are arranged on the input shaft 5, one of the first sun gear 31 and the second ring gear 44 is connected to the first clutch 24, and one of the first planetary carrier 33 and the first ring gear 34 connected to the second brake 22 is connected to the second clutch 25, so that the power of the engine 11 can be transmitted to the first planetary transmission structure 3 and the second planetary transmission structure 4 through the first clutch 24, and can also be transmitted to the first planetary transmission structure 3 and the second planetary transmission structure 4 through the second clutch 25.

[0043] exist Figure 1 In the illustrated embodiment, the first clutch 24 is connected to the first sun gear 31, so that the first sun gear 31 can be coupled to the input shaft 5 via the first clutch 24. The second clutch 25 is connected to the first ring gear 34, so that the first ring gear 34 can be coupled to the input shaft 5 via the second clutch 25.

[0044] exist Figure 7 In the illustrated embodiment, the first clutch 24 is connected to the second ring gear 44, so that the second ring gear 44 can be coupled to the input shaft 5 via the first clutch 24. The second clutch 25 is connected to the first planet carrier 33, so that the first planet carrier 33 can be coupled to the input shaft 5 via the second clutch 25.

[0045] In the above description, by controlling the first brake 21, the second brake 22, the third brake 23, the first clutch 24, and the second clutch 25, multiple gear shifts are achieved, allowing the drive system to switch gears according to road conditions and the operating conditions of the engine 11, thereby optimizing the drive system's operation and improving vehicle comfort and economy. Furthermore, when the vehicle is coasting, the first clutch 24 and the second clutch 25 are disengaged, eliminating the need for the wheels to drag the shaft of the engine 11, thereby extending the service life of the engine 11.

[0046] The axial direction of the input shaft 5 is defined as the Y direction, which is the width of the vehicle. The radial direction from the input shaft 5 toward the output transmission member 6 is defined as the X direction, which is the length of the vehicle. In this application, the parallel and coaxial arrangement of the first planetary transmission structure 3 and the second planetary transmission structure 4 shortens the length of the drive system in the Y direction, thereby making the drive system more compact and smaller in size, allowing the drive system to be used in more compact vehicles.

[0047] In one embodiment, the first sun gear 31 and the second sun gear 41 are both mounted on the input shaft 5, and the first sun gear 31 and the second sun gear 41 can both rotate relative to the axis of the input shaft 5, so that the first planetary transmission structure 3 and the second planetary transmission structure 4 are installed on the input shaft 5, making the structure of the drive system more compact and the length in the Y direction smaller.

[0048] In the first planetary transmission structure 3, the first sun gear 31 is located in the center, the first ring gear 34 is located on the circumferential outside of the first sun gear 31, and the first planetary gear 32 is provided on the first planetary carrier 33. The first planetary gear 32 is located between the first ring gear 34 and the first sun gear 31, and is engaged with both the first ring gear 34 and the first sun gear 31. That is, the first sun gear 31, the first planetary gear 32 and the first ring gear 34 are located on the same plane, forming a single-row planetary transmission structure, so that the size of the first planetary transmission structure 3 in the Y direction is smaller.

[0049] Similarly, in the second planetary transmission structure 4, the second sun gear 41 is located in the center, the second ring gear 44 is located on the circumferential outside of the second sun gear 41, and the second planetary gear 42 is provided on the second planetary carrier 43. The second planetary gear 42 is located between the second ring gear 44 and the second sun gear 41, and is meshed with the second ring gear 44 and the second sun gear 41. That is, the second sun gear 41, the second planetary gear 42 and the second ring gear 44 are located on the same two planes, forming a single-row planetary transmission structure, so that the size of the second planetary transmission structure 4 in the Y direction is smaller.

[0050] The drive system of the present application adopts a first planetary transmission structure 3 and a second planetary transmission structure 4 to achieve power transmission. Compared with the traditional reducer structure in which transmission gears are arranged on parallel axes, the length of the drive system in the X direction is reduced, thereby making the structure of the drive system more compact and smaller in size, so that the drive system can be used in more compact vehicle models.

[0051] Among them, the second sun gear 41 is connected to the first planetary carrier 33, and the second planetary carrier 43 is connected to the first ring gear 34. Through the control of the first brake 21, the second brake 22, and the third brake 23, the power output by the engine 11 can be transmitted to the output transmission member 6 through different transmission paths in the first planetary transmission structure 3 and the second planetary transmission structure 4.

[0052] In one embodiment, the drive system further includes a second motor 13, which is drivingly connected to the input shaft 5. A fourth gear 72 is provided on the output shaft of the second motor 13, and a third gear 71 is provided on the input shaft 5. The third gear 71 meshes with the fourth gear 72, and the diameter of the fourth gear 72 is larger than that of the third gear 71. When the engine 11 drives the second motor 13 to generate electricity, the power of the engine 11 is transferred to the fourth gear 72 via the third gear 71, achieving speed increase and torque reduction. This, in turn, reduces the size of the second motor 13 while maintaining the same power generation requirements. When the second motor 13 is outputting power to drive the vehicle, the power of the second motor 13 is transferred to the third gear 71 via the fourth gear 72, achieving torque increase and speed reduction, thereby increasing the torque delivered to the wheels. The second motor 13 and the engine 11 are arranged on opposite axial sides of the differential 64, that is, the second motor 13 and the engine 11 are respectively connected to opposite ends of the input shaft 5, thereby facilitating the arrangement and connection of the engine 11, the second motor 13, and the input shaft 5.

[0053] In one embodiment, the drive system further includes a first motor 12 , which is connected to the output transmission member 6 . When the first motor 12 is working, power can be transmitted to the vehicle through the output transmission member 6 to drive the vehicle to move.

[0054] The drive system also includes an output transmission member 6, which includes an intermediate shaft 61, a first gear 62, a second gear 63 and a differential 64. The intermediate shaft 61 is arranged parallel to the input shaft 5, and the first gear 62 and the second gear 63 are both fixed on the intermediate shaft 61. A sixth gear 74 is provided on the output shaft of the first motor 12. The first gear 62 is transmission-connected to the sixth gear 74, and the second gear 63 is engaged with the differential gear on the differential 64. The differential 64 is used to connect to the external wheel end.

[0055] The first motor 12 and the engine 11 are arranged on the same axial side of the differential 64. The sixth gear 74, the first gear 62, and the fifth gear 73 are coplanar. The second gear 63 is coplanar with the differential 64 and is arranged on the side of the plane containing the sixth gear 74, the first gear 62, and the fifth gear 73 that is closer to the second planetary transmission structure 4. This positions the second gear 63 and the differential 64 radially outward from the first and second planetary transmission structures 3, 4, and axially at least partially overlaps with one of the first and second planetary transmission structures 3, 4, thereby reducing the size of the drive system in the Y direction.

[0056] In one embodiment, the diameter of the sixth gear 74 is smaller than the diameter of the first gear 62, and the diameter of the second gear 63 is smaller than the diameter of the differential gear on the differential 64, so that when the power of the first motor 12 is transmitted to the differential gear on the differential 64, a two-stage reduction is formed, thereby increasing the torque.

[0057] Example 1:

[0058] See Figure 1 The first planetary transmission structure 3 and the second planetary transmission structure 4 are arranged side by side along the axial direction of the input shaft 5. Furthermore, the first planetary carrier 33 of the first planetary transmission structure 3 is connected to the second sun gear 41 of the second planetary transmission structure 4, and the first ring gear 34 of the first planetary transmission structure 3 is connected to the second planetary carrier 43 of the second planetary transmission structure 4. The first brake 21 and the first clutch 24 are arranged on the side of the first planetary transmission structure 3 facing away from the second planetary transmission structure 4. The first brake 21 is arranged circumferentially outward of the first clutch 24, and the first brake 21 and the first clutch 24 are arranged coplanarly, thereby reducing the size of the drive system at the input shaft 5.

[0059] The third brake 23 is disposed on the circumferential outer side of the second ring gear 44 , and the second ring gear 44 is coplanar with the second planetary transmission structure 4 , thereby reducing the size of the drive system at the input shaft 5 .

[0060] The second brake 22 and the second clutch 25 are arranged on the side of the second planetary transmission structure 4 away from the first planetary transmission structure 3, and the second brake 22 is arranged on the circumferential outside of the second clutch 25, and the second brake 22 and the second clutch 25 are arranged in the same plane, so that the size of the drive system at the input shaft 5 can be reduced.

[0061] See Figure 1 The first ring gear 34 is connected to the second brake 22, the first planetary carrier 33 is in driving connection with the output transmission member 6, the first clutch 24 is connected to the first sun gear 31, and the second clutch 25 is connected to the first ring gear 34. In this embodiment, five power transmission paths are formed between the input shaft 5 and the output transmission member 6. The transmission ratios of at least two of the five power transmission paths can be set to be different, allowing the drive system to have multiple different gear positions. The power transmission paths between the input shaft 5 and the output transmission member 6 specifically include paths one through five.

[0062] See Figure 2 Path 1: Control the first clutch 24 and the second brake 22 to be in the engaged state, and the second clutch 25, the first brake 21 and the third brake 23 to be in the disengaged state. The power on the input shaft 5 is transmitted to the output transmission member 6 through the first clutch 24, the first sun gear 31, the first planetary gear 32 and the first planetary carrier 33, and then transmitted to the wheels.

[0063] See Figure 3Path 2: Control the first clutch 24 and the third brake 23 to be in the engaged state, and the second clutch 25, the first brake 21 and the second brake 22 to be in the disengaged state. The power on the input shaft 5 is divided into two paths after passing through the first clutch 24, the first sun gear 31 and the first planetary gear 32. One path is directly transmitted to the output transmission member 6 through the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the first ring gear 34, the second planetary carrier 43, the second sun gear 41 and the first planetary carrier 33, and then transmitted to the wheels.

[0064] See Figure 4 Path three: Control the second clutch 25 and the first brake 21 to be in the engaged state, and the second clutch 25, the second brake 22 and the third brake 23 to be in the disengaged state. The power on the input shaft 5 is divided into two paths after passing through the second clutch 25 and the second planetary carrier 43. One path is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33.

[0065] See Figure 5 , Path four: Control the first clutch 24 and the second clutch 25 to be in the engaged state, and the first brake 21, the second brake 22 and the third brake 23 to be in the disengaged state. The power on the input shaft 5 is divided into two paths at the input shaft 5. One path is transmitted to the output transmission member 6 through the first clutch 24, the first sun gear 31, the first planetary gear 32, and the first planetary carrier 33. The other path is divided into two branches after passing through the second clutch 25 and the second planetary carrier 43. One branch is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33, and the other branch is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33.

[0066] See Figure 6 Path five: Control the second clutch 25 and the third brake 23 to be in the engaged state, and the first clutch 24, the first second brake, and the second brake 22 to be in the disengaged state. The power on the input shaft 5 is divided into two paths after passing through the second clutch 25 and the second planetary carrier 43. One path is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33.

[0067] In an embodiment in which the drive system includes an engine 11, a first motor 12 and a second motor 13, the drive system can achieve 5 engine drive modes, 1 pure electric mode, 1 series extended-range mode, 5 parallel hybrid modes, 6 brake energy recovery, 5 driving charging modes, and 1 parking power generation mode.

[0068] Among them, the five engine driving modes enable the high-efficiency area of ​​the engine 11 to cover medium and high vehicle speeds, avoiding the use of the direct drive mode of the first motor 12 in the low-efficiency area of ​​the motor, thereby avoiding energy conversion loss and maximizing efficiency.

[0069] When the drive system is in pure electric mode, the power of the first motor 12 is output through two stages of deceleration, so that the first motor 12 operates in the most efficient range during low and medium speed driving of the vehicle.

[0070] The vehicle includes five parallel hybrid modes, which gives the vehicle strong power. The multiple engine 11 drive gears and the parallel torque regulation of the first motor 12 enable the high-efficiency range of the engine 11 and the first motor 12 to cover all medium and high-speed driving conditions of the vehicle, so that the vehicle also has excellent economic performance.

[0071] When in series range-extending mode, the engine 11 can output power when the first motor 12 is driven, electricity is generated through the second motor 13, and the first motor 12 outputs power. It can be used for medium and high-speed cruising feeding and charging or for efficiently extending the PHEV's range.

[0072] The vehicle includes five driving charging modes, which can realize that when the engine 11 is driven, the engine 11 outputs power. While the engine 11 drives the vehicle to travel, the second motor 13 generates electricity through the clutch engagement, which can be used for power feeding and charging or for efficiently extending the PHEV cruising range.

[0073] The vehicle includes 6 brake energy frame recovery modes, allowing the vehicle to select the appropriate gear according to different braking speeds, achieving efficient energy recovery and effective braking functions.

[0074] The vehicle has a parking charging mode, which can achieve temporary parking at a traffic light or when the vehicle is parked, the engine 11 outputs power and generates electricity through the second motor 13.

[0075] In the present application, it is also possible to achieve power-free switching between different working modes by controlling the opening and closing of the first clutch 24 and the second clutch and the coordinated control of the motor speed and torque, which not only achieves a comprehensive improvement in the vehicle system's power and economy, but also enables the vehicle to have top-level driving comfort.

[0076] In detail, when the drive system is in engine drive mode 1, the power of the engine 11 is transmitted through the above-mentioned path 1, that is, the engine 11 is working, the first motor 12 and the second motor 13 are not working, the first clutch 24 and the second brake 22 are in a coupled state, the second clutch 25, the first brake 21 and the third brake 23 are in a disengaged state, and the power of the engine 11 is transmitted to the output transmission member 6 through the first clutch 24, the first sun gear 31, the first planetary gear 32 and the first planetary carrier 33, and then transmitted to the wheels.

[0077] When the drive system is in engine drive mode 2, the power of the engine 11 is transmitted through the above-mentioned path 2, that is, the engine 11 is working, the first motor 12 and the second motor 13 are not working, the first clutch 24 and the third brake 23 are in a coupled state, and the second clutch 25, the first brake 21 and the third brake 23 are in a disengaged state. The power of the engine 11 is divided into two paths after passing through the first clutch 24, the first sun gear 31 and the first planetary gear 32. One path is directly transmitted to the output transmission member 6 through the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the first ring gear 34, the second planetary carrier 43, the second sun gear 41 and the first planetary carrier 33, and then transmitted to the wheels.

[0078] When the drive system is in engine drive mode 3, the power of the engine 11 is transmitted through the above-mentioned path three, that is, the engine 11 is working, the first motor 12 and the second motor 13 are not working, the second clutch 25 and the first brake 21 are in the engaged state, the second clutch 25, the second brake 22 and the third brake 23 are in the disengaged state, and the power of the engine 11 is divided into two paths after passing through the second clutch 25 and the second planetary carrier 43. One path is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33.

[0079] When the drive system is in engine drive mode 4, the power of the engine 11 is transmitted through the above-mentioned path four, that is, the first clutch 24 and the second clutch 25 are in the engaged state, and the first brake 21, the second brake 22 and the third brake 23 are in the disengaged state. The power of the engine 11 is divided into two paths at the input shaft 5. One path is transmitted to the output transmission member 6 through the first clutch 24, the first sun gear 31, the first planetary gear 32, and the first planetary carrier 33. The other path is divided into two branches after passing through the second clutch 25 and the second planetary carrier 43. One branch is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33, and the other branch is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33.

[0080] When the drive system is in engine drive mode 5, the power of the engine 11 is transmitted through the above-mentioned path five, that is, the second clutch 25 and the third brake 23 are in the engaged state, and the first clutch 24, the first second brake and the second brake 22 are in the disengaged state. The power of the engine 11 is divided into two paths after passing through the second clutch 25 and the second planetary carrier 43. One path is transmitted to the output transmission member 6 through the first ring gear 34, the first planetary gear 32, and the first planetary carrier 33, and the other path is transmitted to the output transmission member 6 through the second planetary gear 42, the second sun gear 41, and the first planetary carrier 33.

[0081] When the drive system is in pure electric mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the first motor 12 is working, the engine 11 and the second motor 13 are not working, and the power output by the first motor 12 is transmitted to the wheels through the output transmission member 6.

[0082] When the drive system is in parallel hybrid mode 1, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 1, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0083] When the drive system is in parallel hybrid mode 2, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 2, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0084] When the drive system is in parallel hybrid mode 3, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path three, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0085] When the drive system is in parallel hybrid mode 4, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 4, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0086] When the drive system is in parallel hybrid mode 5, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 5, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0087] When the drive system is in the series extended-range mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the power output by the first motor 12 is transmitted to the wheels through the output transmission member 6, and the engine 11 drives the second motor 13 to generate electricity.

[0088] When the drive system is in driving charging mode 1, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 1, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0089] When the drive system is in driving charging mode 2, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 2, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0090] When the drive system is in driving charging mode 3, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path three, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0091] When the drive system is in driving charging mode 4, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 4, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0092] When the drive system is in driving charging mode 5, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 5, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0093] When the drive system is in the parking power generation mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the first motor 12 does not work, and the engine 11 drives the second motor 13 to generate electricity.

[0094] When the drive system is in the regenerative braking mode, the engine 11 is not operating, and the wheel torque flows back to the second motor 13 via one of the aforementioned paths 1, 2, 3, 4, and 5 to drive the second motor 13 to generate electricity, or flows back to the first motor 12 via the output transmission member 6 to drive the first motor 12 to generate electricity, thereby forming six regenerative braking modes. In other embodiments, the wheel torque can also flow back to the second motor 13 via one of the aforementioned paths 1, 2, 3, 4, and 5, while simultaneously flowing back to the first motor 12 via the output transmission member 6 to drive both the first and second motors 12, 13 to generate electricity.

[0095] The working modes of the drive system are as follows:

[0096]

[0097]

[0098] Example 2:

[0099] See Figure 7 The function of this embodiment is the same as that of the first embodiment, but the power transmission path is different.

[0100] See Figure 7 The first planetary transmission structure 3 and the second planetary transmission structure 4 are arranged side by side along the axial direction of the input shaft 5. Furthermore, the first planetary carrier 33 of the first planetary transmission structure 3 is connected to the second sun gear 41 of the second planetary transmission structure 4, and the first ring gear 34 of the first planetary transmission structure 3 is connected to the second planetary carrier 43 of the second planetary transmission structure 4. The first brake 21 and the second brake 22 are arranged on the side of the first planetary transmission structure 3 facing away from the second planetary transmission structure 4. The first clutch 24 is arranged on the side of the second planetary transmission structure 4 facing away from the first planetary transmission structure 3. The second clutch 25 is arranged between the first planetary transmission structure 3 and the second planetary transmission structure 4. This ensures that the first brake 21, the second brake 22, the first clutch 24, and the second clutch 25 do not mechanically interfere with the first planetary transmission structure 3 and the second planetary transmission structure 4.

[0101] The third brake 23 is disposed on the circumferential outer side of the second ring gear 44 , and the second ring gear 44 is coplanar with the second planetary transmission structure 4 , thereby reducing the size of the drive system at the input shaft 5 .

[0102] The first planetary carrier 33 is connected to the second brake 22, and the first ring gear 34 is in transmission connection with the output transmission member 6. The first clutch 24 is connected to the second ring gear 44, and the second clutch 25 is connected to the first planetary carrier 33. In this embodiment, five power transmission paths are formed between the input shaft 5 and the output transmission member 6. The transmission ratios of at least two of the five power transmission paths can be set to be different, allowing the drive system to have multiple different gear positions. Specifically, the power transmission paths between the input shaft 5 and the output transmission member 6 include paths six through ten.

[0103] See Figure 8 , Path six: the second clutch 25 and the first brake 21 are in the engaged state, the first clutch 24, the second brake 22 and the third brake 23 are in the disengaged state, and the power on the input shaft 5 is transmitted to the output transmission member 6 through the second clutch 25, the first planetary carrier 33, the first planetary gear 32 and the first ring gear 34.

[0104] See Figure 9 Path seven: Control the second clutch 25, the first brake 21 and the third brake 23 to be in the engaged state, and the first clutch 24 and the second brake 22 to be in the disengaged state. The power on the input shaft 5 is divided into two paths after passing through the second clutch 25 and the first planetary carrier 33. One path is directly transmitted to the output transmission member 6 through the first planetary gear 32 and the first ring gear 34, and the other path is transmitted to the output transmission member 6 through the second sun gear 41, the second planetary gear 42, the second planetary carrier 43 and the first ring gear 34.

[0105] See Figure 10 , Path eight: Control the first clutch 24 and the second brake 22 to be in the engaged state, the second clutch 25, the first brake 21 and the third brake 23 to be in the disengaged state, and the power on the input shaft 5 is transmitted to the output transmission member 6 through the first clutch 24, the second ring gear 44, the second planetary gear 42, the second planetary carrier 43 and the first ring gear 34.

[0106] See Figure 11 , Path nine: Control the first clutch 24, the second clutch 25 and the first brake 21 to be in the engaged state, and the second brake 22 and the third brake 23 to be in the disengaged state. The power on the input shaft 5 is divided into two paths at the input shaft 5. One path is transmitted to the output transmission member 6 through the first clutch 24, the second ring gear 44, the second planetary gear 42, the second planetary carrier 43 and the first ring gear 34; the other path is divided into two branches after passing through the second clutch 25 and the first planetary carrier 33. One branch is transmitted to the output transmission member 6 through the first planetary gear 32 and the first ring gear 34, and the other branch is transmitted to the output transmission member 6 through the second sun gear 41, the second planetary gear 42, the second planetary carrier 43 and the first ring gear 34.

[0107] See Figure 12 Path ten: control the first clutch 24 and the first brake 21 to be in the engaged state, and the second clutch 25, the second brake 22 and the third brake 23 to be in the disengaged state. The power on the input shaft 5 is divided into two paths after passing through the first clutch 24, the second ring gear 44 and the second planetary gear 42. One path is transmitted to the output transmission member 6 through the second planetary carrier 43 and the first ring gear 34, and the other path is transmitted to the output transmission member 6 through the second sun gear 41, the first planetary carrier 33, the first planetary gear 32 and the first ring gear 34.

[0108] In an embodiment in which the drive system includes an engine 11, a first motor 12, and a second motor 13, the drive system can achieve 5 engine drive modes, 1 pure electric mode, 1 series extended-range mode, 5 parallel hybrid modes, 6 brake energy recovery, 5 driving charging modes, and 1 parking power generation mode.

[0109] In detail, when the driving system is in the engine driving mode 1, the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 6, and then transmitted to the wheels.

[0110] When the drive system is in engine drive mode 2, the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 7, and then transmitted to the wheels.

[0111] When the drive system is in engine drive mode 3, the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 8, and then transmitted to the wheels.

[0112] When the drive system is in engine drive mode 4, the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 9, and then transmitted to the wheels.

[0113] When the drive system is in engine drive mode 5, the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 10, and then transmitted to the wheels.

[0114] When the drive system is in pure electric mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the first motor 12 is working, the engine 11 and the second motor 13 are not working, and the power output by the first motor 12 is transmitted to the wheels through the output transmission member 6.

[0115] When the drive system is in parallel hybrid mode 1, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path six, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0116] When the drive system is in parallel hybrid mode 2, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path seven, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0117] When the drive system is in parallel hybrid mode 3, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path eight, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0118] When the drive system is in parallel hybrid mode 4, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 9, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0119] When the drive system is in parallel hybrid mode 5, the engine 11 and the first motor 12 are working, and the second motor 13 is not working. The power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 10, and is combined with the power output of the first motor 12 to be delivered to the wheels.

[0120] When the drive system is in the series extended-range mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the power output by the first motor 12 is transmitted to the wheels through the output transmission member 6, and the engine 11 drives the second motor 13 to generate electricity.

[0121] When the drive system is in driving charging mode 1, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path six, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0122] When the drive system is in driving charging mode 2, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 7, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0123] When the drive system is in driving charging mode 3, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path eight, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0124] When the drive system is in driving charging mode 4, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 9, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0125] When the drive system is in driving charging mode 5, the first motor 12 is working, and part of the power of the engine 11 is transmitted to the output transmission member 6 through the above-mentioned path 10, and is combined with the power output of the first motor 12 to be transmitted to the wheels. The other part of the power of the engine 11 drives the second motor 13 to generate electricity.

[0126] When the drive system is in the parking power generation mode, the first clutch, the second clutch 25, the first brake 21, the second brake 22 and the third brake 23 are all disengaged, the first motor 12 does not work, and the engine 11 drives the second motor 13 to generate electricity.

[0127] When the drive system is in the regenerative braking mode, the engine 11 is not operating, and the wheel torque flows back to the second motor 13 via one of the aforementioned paths 6, 7, 8, 9, and 10 to drive the second motor 13 to generate electricity, or flows back to the first motor 12 via the output transmission member 6 to drive the first motor 12 to generate electricity, thereby forming six regenerative braking modes. In other embodiments, the wheel torque can also flow back to the second motor 13 via one of the aforementioned paths 6, 7, 8, 9, and 10, while simultaneously flowing back to the first motor 12 via the output transmission member 6 to drive both the first and second motors 12, 13 to generate electricity.

[0128] The working modes of the drive system are as follows:

[0129]

[0130]

[0131] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the scope of protection of the present invention.

Claims

1. A drive system, characterized in that: include: A first planetary transmission structure includes a first sun gear, a first planet carrier and a first ring gear; a second planetary transmission structure, the second planetary transmission structure comprising a second sun gear, a second planet carrier, and a second ring gear, the second sun gear being connected to the first planet carrier, and the second planet carrier being connected to the first ring gear; a first brake connected to the first sun gear and configured to brake the first sun gear; a second brake and an output transmission member, wherein one of the first planet carrier and the first ring gear is connected to the second brake, and the other is connected to the output transmission member; a third brake connected to the second ring gear and configured to brake the second ring gear; an engine and an input shaft, wherein the input shaft is drivingly connected to the engine; The first clutch and the second clutch are arranged on the input shaft, one of the first sun gear and the second ring gear is connected to the first clutch, and one of the first planet carrier and the first ring gear connected to the second brake is connected to the second clutch.

2. The drive system according to claim 1, characterized in that The first ring gear is connected to the second brake, and the first planet carrier is transmission-connected to the output transmission member; The first clutch is connected to the first sun gear, and the second clutch is connected to the first ring gear.

3. The drive system according to claim 1, characterized in that The first planet carrier is connected to the second brake, and the first ring gear is transmission-connected to the output transmission member; The first clutch is connected to the second ring gear, and the second clutch is connected to the first planet carrier.

4. The drive system according to any one of claims 1 to 3, characterized in that: The second planetary transmission structure is coaxially arranged with the first planetary transmission structure; The first sun gear and the second sun gear are both sleeved on the input shaft, and the first sun gear and the second sun gear are both rotatable relative to the axis of the input shaft.

5. The drive system according to any one of claims 1 to 3, characterized in that: The drive system further comprises: The first motor is connected to the output transmission member.

6. The drive system according to claim 5, characterized in that: The output transmission component includes an intermediate shaft, a first gear, a second gear and a differential. The first gear and the second gear are both fixed on the intermediate shaft. The first gear is in driving connection with the first motor, and the second gear is in driving connection with the differential.

7. The drive system according to claim 5, characterized in that: The drive system further comprises a second motor, a fourth gear is provided on the output shaft of the second motor, a third gear is provided on the input shaft, and the third gear is meshed with the fourth gear; A diameter of the fourth gear is greater than a diameter of the third gear.

8. The drive system according to claim 2, characterized in that: The first clutch and the second brake are engaged, the second clutch, the first brake, and the third brake are disengaged, and the engine power is transmitted to the output transmission member through the first clutch, the first sun gear, the first planetary gear, and the first planetary carrier, thereby forming engine drive mode 1; The first clutch and the third brake are engaged, the second clutch, the first brake, and the third brake are disengaged, and the engine power is divided into two paths after passing through the first clutch, the first sun gear, and the first planetary gear. One path is directly transmitted to the output transmission member via the first planetary carrier, and the other path is transmitted to the output transmission member via the first ring gear, the second planetary carrier, the second sun gear, and the first planetary carrier, thereby forming engine drive mode 2. The second clutch and the first brake are engaged, and the second clutch, the second brake, and the third brake are disengaged. The engine power is divided into two paths after passing through the second clutch and the second planetary carrier. One path is transmitted to the output transmission member through the first ring gear, the first planetary gear, and the first planetary carrier, and the other path is transmitted to the output transmission member through the second planetary gear, the second sun gear, and the first planetary carrier, thereby forming engine drive mode 3. The first clutch and the second clutch are in the engaged state, and the first brake, the second brake, and the third brake are in the disengaged state. The engine power is divided into two paths at the input shaft. One path is transmitted to the output transmission member through the first clutch, the first sun gear, the first planetary gear, and the first planetary carrier. The other path is further divided into two branches after passing through the second clutch and the second planetary carrier. One path is transmitted to the output transmission member through the second planetary gear, the second sun gear, and the first planetary carrier, and the other path is transmitted to the output transmission member through the first ring gear, the first planetary gear, and the first planetary carrier, thereby forming engine drive mode 4. The second clutch and the third brake are in the engaged state, the first clutch, the first and second brakes, and the second brake are in the disengaged state, and the engine power is divided into two paths after passing through the second clutch and the second planetary carrier. One path is transmitted to the output transmission member through the first ring gear, the first planetary gear, and the first planetary carrier, and the other path is transmitted to the output transmission member through the second planetary gear, the second sun gear, and the first planetary carrier, thereby forming engine drive mode 5.

9. The drive system according to claim 3, characterized in that: The operating modes of the drive system include at least: The second clutch and the first brake are engaged, the first clutch, the second brake, and the third brake are disengaged, and the engine power is transmitted to the output transmission member through the second clutch, the first planetary carrier, the first planetary gear, and the first ring gear, thereby forming engine drive mode 1; The second clutch, the first brake, and the third brake are engaged, and the first clutch and the second brake are disengaged. The engine power is divided into two paths after passing through the second clutch and the first planetary carrier. One path is directly transmitted to the output transmission member via the first planetary gear and the first ring gear, and the other path is transmitted to the output transmission member via the second sun gear, the second planetary gear, the second planetary carrier, and the first ring gear, thereby forming engine drive mode 2. The first clutch and the second brake are engaged, the second clutch, the first brake, and the third brake are disengaged, and the engine power is transmitted to the output transmission member through the first clutch, the second ring gear, the second planetary gear, the second planetary carrier, and the first ring gear, thereby forming engine drive mode 3; The first clutch, the second clutch, and the first brake are engaged, and the second brake and the third brake are disengaged. The engine power is split into two paths at the input shaft. One path is transmitted to the output transmission member through the first clutch, the second ring gear, the second planetary gear, the second planetary carrier, and the first ring gear. The other path is split into two branches after passing through the second clutch and the first planetary carrier. One branch is transmitted to the output transmission member through the first planetary gear and the first ring gear, and the other branch is transmitted to the output transmission member through the second sun gear, the second planetary gear, the second planetary carrier, and the first ring gear, thereby forming engine drive mode 4. The first clutch and the first brake are in the engaged state, the second clutch, the second brake and the third brake are in the disengaged state, and the power of the engine is divided into two paths after passing through the first clutch, the second ring gear and the second planetary gear. One path is transmitted to the output transmission member through the second planetary carrier and the first ring gear, and the other path is transmitted to the output transmission member through the second sun gear, the first planetary carrier, the first planetary gear and the first ring gear, thereby forming engine drive mode 5.

10. A vehicle, characterized in that: include: body; The drive system according to any one of claims 1 to 9, wherein the drive system is fixed to the vehicle body; The wheel is connected to the output transmission member.

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