Hybrid coupling system and hybrid electric vehicle

Abstract

The present application belongs to the technical field of automobile transmission systems, and specifically relates to a hybrid power coupling system and a hybrid vehicle. The hybrid power coupling system includes a power input shaft, a first planetary gear set, a second planetary gear set, at least two clutches, at least two brakes, a first output gear, and a motor drive assembly. Two of the first sun gear, the second sun gear, and the second planet carrier in the planetary gear set are respectively connected to the power input shaft via clutches. Two of the first sun gear, the second sun gear, and the second planet carrier in the planetary gear set are respectively connected to brakes. The first output gear is disposed on the first planet carrier, and the motor drive assembly connects the first output gear to the wheels. The present application can form multiple gears by controlling the two clutches and the two brakes, forming a series-parallel coupled power system with multiple gears, so that the engine can be in a high-efficiency zone when in direct drive or parallel drive mode, thereby further reducing the fuel consumption of the entire vehicle.

Description

Technical Field

[0001] The present application belongs to the technical field of automobile transmission systems, and specifically relates to a hybrid power coupling system and a hybrid power vehicle. Background Art

[0002] Hybrid electric vehicle powertrains primarily consist of three basic configurations: series, parallel, and hybrid. In the series configuration, there's no mechanical connection between the engine and the output shaft, enabling optimal speed or torque control. However, all energy must undergo two conversions between mechanical and electrical power before reaching the output shaft, resulting in significant losses. Parallel transmission offers high transmission efficiency, but the mechanical connection between the engine and the output shaft doesn't guarantee the engine always operates within its optimal operating range, making it typically used at medium and high speeds. Hybrid coupling combines the advantages of series and parallel configurations, achieving both optimized engine control and efficient control at medium and high speeds.

[0003] Currently, series-parallel coupled powertrains all have a single gear, which doesn't always allow the vehicle to operate in the optimal mode. For example, at high speeds, the optimal mode should be direct engine drive or parallel drive. However, because the powertrain only has a single gear, the engine is not in its high-efficiency zone when in direct or parallel drive mode. In these situations, the series range extender mode is often used, which prevents the entire system from achieving maximum efficiency and further reducing vehicle fuel consumption. Summary of the Invention

[0004] The purpose of this application is to provide a hybrid power coupling system and a hybrid vehicle, so that the engine can be in a high-efficiency zone in the engine direct drive or parallel drive mode, thereby further reducing the fuel consumption of the entire vehicle.

[0005] In order to achieve the above objectives, the present application provides a hybrid coupling system, comprising:

[0006] Power input shaft, used to connect to the engine;

[0007] A first planetary gear row includes a first sun gear, a first planet carrier, first planetary gears, and a first ring gear, wherein the first sun gear is disposed within the first ring gear, and the first planetary gears mesh with and connect the first sun gear and the first ring gear;

[0008] a second planetary gear row, comprising a second sun gear, a second planet carrier, second planetary gears, and a second ring gear, wherein the second sun gear is disposed within the second ring gear, the second planetary gears are connected to the first sun gear and the first ring gear, the first planet carrier is disposed on the first planetary gears and connected to the second ring gear, and the second planet carrier is disposed on the second planetary gears and connected to the first ring gear;

[0009] at least two clutches, wherein two of the first sun gear, the second sun gear, and the second planet carrier are connected to the power input shaft through the clutches respectively;

[0010] at least two brakes, two of the first sun gear, the second sun gear, and the second planet carrier being connected to the brakes respectively;

[0011] a first output gear, disposed on the first planet carrier;

[0012] The motor drive assembly is connected to the first output gear and the wheel.

[0013] Optionally, at least two of the clutches include a first clutch and a second clutch, the first clutch connecting the first sun gear and the power input shaft, the second clutch connecting the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connecting the second planetary carrier, and the second brake connecting the second sun gear.

[0014] Optionally, at least two of the clutches include a first clutch and a second clutch, the first clutch connecting the first sun gear and the power input shaft, the second clutch connecting the second sun gear and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connecting the second planetary carrier, and the second brake connecting the second sun gear.

[0015] Optionally, at least two of the clutches include a first clutch and a second clutch, the first clutch connecting the second sun gear and the power input shaft, the second clutch connecting the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connecting the second planetary carrier, and the second brake connecting the first sun gear.

[0016] Optionally, at least two of the clutches include a first clutch and a second clutch, the first clutch connecting the first sun gear and the power input shaft, the second clutch connecting the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connecting the first sun gear, and the second brake connecting the second sun gear.

[0017] Optionally, at least two of the clutches further include a third clutch, which connects the generator and the power input shaft.

[0018] Optionally, the motor drive assembly includes a differential, a motor input shaft and a power output shaft, the differential is connected to the first output gear, the power output shaft is connected to the differential and the wheels, and the motor input shaft is connected to the power output shaft and the drive motor.

[0019] Optionally, the motor input shaft is connected to the power output shaft through the differential.

[0020] Optionally, the motor drive assembly further includes a reduction gear and a second output gear, the reduction gear including a primary gear and a secondary gear coaxially connected, the primary gear being connected to the motor input shaft through the second output gear, the primary gear being meshed with the first output gear, and the secondary gear being connected to the differential.

[0021] The present application also provides a hybrid electric vehicle, comprising:

[0022] Hybrid coupling system;

[0023] The wheel is connected to the motor drive assembly.

[0024] The hybrid coupling system and hybrid vehicle disclosed in this application have the following beneficial effects:

[0025] In the present application, the hybrid coupling system includes a power input shaft, a first planetary gear row, a second planetary gear row, a clutch, a brake, a first output gear and a motor drive assembly, the first planetary gear row includes a first sun gear, a first planetary carrier, a first planetary gear and a first ring gear, the second planetary gear row includes a second sun gear, a second planetary carrier, a second planetary gear and a second ring gear, the first planetary carrier is arranged on the first planetary gear and is connected to the second ring gear, the second planetary carrier is arranged on the second planetary gear and is connected to the first ring gear, two of the first sun gear, the second sun gear and the second planetary carrier are respectively connected to the power input shaft through a clutch, and two of the first sun gear, the second sun gear and the second planetary carrier are respectively connected to the brake, and multiple gears can be formed by controlling the two clutches and the two brakes, forming a series-parallel coupled power system with multiple gears, so that the engine can be in a high-efficiency zone in the engine direct drive or parallel drive mode, so as to further reduce the fuel consumption of the whole vehicle.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 It is a structural diagram of the hybrid coupling system in Example 1 of the present application.

[0030] Figure 2 This is an operational logic diagram of the hybrid coupling system in Example 1 of the present application.

[0031] Figure 3 It is a structural diagram of the hybrid coupling system in Example 2 of the present application.

[0032] Figure 4 It is a structural diagram of the hybrid coupling system in Example 3 of the present application.

[0033] Figure 5 It is a structural diagram of the hybrid coupling system in the fourth embodiment of the present application.

[0034] Figure 6 It is a structural diagram of the hybrid vehicle in the fifth embodiment of the present application.

[0035] Description of reference numerals:

[0036] 100. Power input shaft;

[0037] 200, first planetary gear row; 210, first sun gear; 220, first planet carrier; 230, first planetary gear; 240, first ring gear;

[0038] 300, second planetary gear row; 310, second sun gear; 320, second planet carrier; 330, second planetary gear; 340, second ring gear;

[0039] 400, clutch; 410, first clutch; 420, second clutch; 430, third clutch;

[0040] 500, brake; 510, first brake; 520, second brake;

[0041] 600, first output gear;

[0042] 700, motor drive assembly; 710, differential; 720, motor input shaft; 730, power output shaft; 740, second output gear; 750, primary gear; 760, secondary gear;

[0043] 10. Engine; 20. Wheels; 30. Drive motor; 40. Generator. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0045] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0046] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0047] Example 1

[0048] See also Figure 1 As shown, the hybrid coupling system in this embodiment includes a power input shaft 100, a first planetary gear set 200, a second planetary gear set 300, a clutch 400, a brake 500, a first output gear 600, and a motor drive assembly 700. The power input shaft 100 is used to connect to the engine 10 and output the power of the engine 10 to the wheels 20.

[0049] The first planetary gear set 200 includes a first sun gear 210, a first planet carrier 220, first planetary gears 230, and a first ring gear 240. The first sun gear 210 is loosely mounted on the power input shaft 100 and disposed within the first ring gear 240. The first planetary gears 230 mesh with each other and connect the first sun gear 210 and the first ring gear 240. At least one first planetary gear 230 is provided, but typically three first planetary gears 230 are provided to ensure smooth operation of the first planetary gear set 200.

[0050] The second planetary gear set 300 includes a second sun gear 310, a second planetary carrier 320, second planetary gears 330, and a second ring gear 340. The second sun gear 310 is loosely mounted on the power input shaft 100 and disposed within the second ring gear 340. The second planetary gears 320 are connected to the first sun gear 210 and the first ring gear 240. The first planetary carrier 220 is disposed on the first planetary gears 230 and is connected to the second ring gear 340. The second planetary carrier 320 is disposed on the second planetary gears 330 and is connected to the first ring gear 240.

[0051] The first output gear 600 is disposed on the first planet carrier 220 , and the first output gear 600 and the first planet carrier 220 may be fixedly connected. The motor drive assembly 700 connects the first output gear 600 and the wheel 20 .

[0052] At least two clutches 400 are provided, and two of the first sun gear 210, the second sun gear 310, and the second planetary carrier 320 are connected to the power input shaft 100 via the clutches 400. When the clutches 400 are engaged, the power input shaft 100 can output power directly to the first sun gear 210, the second sun gear 310, or the second planetary carrier 320 via the clutches 400. Since the first planetary carrier 220 is directly connected to the first output gear 600, it is not directly connected to the power input shaft 100.

[0053] At least two brakes 500 are set, and two of the first sun gear 210, the second sun gear 310 and the second planetary carrier 320 are respectively connected to the brake 500. The brake 500 can be installed on the casing to combine the first sun gear 210, the second sun gear 310 or the second planetary carrier 320.

[0054] When two clutches 400 are provided, the two clutches 400 can be engaged at the same time, or one of them can be engaged. When two brakes 500 are provided, one of the two brakes 500 can be engaged, or both brakes can be separated. Multiple gears can be formed by controlling the two clutches 400 and the two brakes 500.

[0055] In this embodiment, the hybrid coupling system includes a power input shaft 100, a first planetary gear row 200, a second planetary gear row 300, a clutch 400, a brake 500, a first output gear 600 and a motor drive assembly 700. The first planetary gear row 200 includes a first sun gear 210, a first planetary carrier 220, a first planetary gear 230 and a first ring gear 240. The second planetary gear row 300 includes a second sun gear 310, a second planetary carrier 320, a second planetary gear 330 and a second ring gear 340. The first planetary carrier 220 is disposed on the first planetary gear 230 and is connected to the second ring gear 340. The second planetary carrier 320 is disposed on the first planetary gear 230 and is connected to the second ring gear 340. 0 is disposed on the second planetary gear 330 and connected to the first ring gear 240. Two of the first sun gear 210, the second sun gear 310, and the second planetary carrier 320 are respectively connected to the power input shaft 100 via a clutch 400. Two of the first sun gear 210, the second sun gear 310, and the second planetary carrier 320 are respectively connected to the brake 500. By controlling the two clutches 400 and the two brakes 500, multiple gears can be established, forming a series-parallel coupled power system with multiple gears. This allows the engine 10 to operate in a high-efficiency range in either direct drive or parallel drive mode, thereby further reducing the fuel consumption of the entire vehicle.

[0056] For example, the at least two clutches 400 include a first clutch 410 and a second clutch 420, wherein the first clutch 410 connects the first sun gear 210 and the power input shaft 100, and the second clutch 420 connects the second planetary carrier 320 and the power input shaft 100. The two brakes 500 include a first brake 510 and a second brake 520, wherein the first brake 510 connects the second planetary carrier 320, and the second brake 520 connects the second sun gear 310.

[0057] See also Figure 1 and Figure 2 As shown, by controlling the two clutches 400 and the two brakes 500, multiple gears can be formed, namely engine direct drive 1st gear, engine direct drive 2nd gear, engine direct drive 3rd gear and engine direct drive 4th gear. The details are as follows:

[0058] In the engine direct drive first gear, the first clutch 410 is engaged, the first brake 510 is engaged, and the power of the engine 10 is output to the power input shaft 100. The power input shaft 100 drives the first sun gear 210 to rotate through the first clutch 410. The first sun gear 210 outputs power to the first output gear 600 through the first planetary carrier 220. The first output gear 600 drives the wheels 20 through the motor drive assembly 700.

[0059] When the engine is in direct drive 2nd gear, the first clutch 410 is engaged, the second brake 520 is engaged, and the power of the engine 10 is output to the power input shaft 100. The power input shaft 100 drives the first sun gear 210 to rotate through the first clutch 410. The first sun gear 210 drives the first planetary gear 230 to rotate. The power output of the first planetary gear 230 is divided into two paths. One path drives the first output gear 600 through the first planetary carrier 220, and the other path drives the first output gear 600 through the first ring gear 240, the second planetary carrier 320, the second planetary carrier 330, the second ring gear 340, and the first planetary carrier 220 in sequence. The first output gear 600 drives the wheels 20 through the motor drive assembly 700.

[0060] When the engine is in direct drive 3rd gear, the second clutch 420 is engaged, the second brake 520 is engaged, and the power of the engine 10 is output to the power input shaft 100. The power input shaft 100 drives the second planetary carrier 320 to rotate through the second clutch 420. The power output of the second planetary carrier 320 is divided into two paths. One path drives the first output gear 600 through the first planetary gear 230 and the first planetary carrier 220 in sequence. The other path drives the first output gear 600 through the second planetary gear 330, the second ring gear 340, and the first planetary carrier 220 in sequence. The first output gear 600 drives the wheels 20 through the motor drive assembly 700.

[0061] When the engine is in direct drive 4th gear, the first clutch 410 is engaged and the second clutch 420 is engaged. The power of the engine 10 is output to the power input shaft 100. The power output of the power input shaft 100 is divided into two paths. One path drives the first output gear 600 through the first clutch 410, the first sun gear 210, the first planetary gear 230, and the first planetary carrier 220 in sequence. The other path is output to the second planetary carrier 320 through the second clutch 420. The power output of the second planetary carrier 320 is divided into two paths. One path drives the first output gear 600 through the first ring gear 240, the first planetary gear 230, and the first planetary carrier 220 in sequence. The other path drives the first output gear 600 through the second planetary gear 330, the second ring gear 340, and the first planetary carrier 220 in sequence. The first output gear 600 drives the wheels 20 through the motor drive assembly 700.

[0062] Because the transmission paths differ in different gears, the speeds and torques output to the first output gear 600 also differ, enabling four gears of direct engine power output. At medium and high speeds, the optimal mode is direct engine drive or parallel drive. This embodiment controls the two clutches 400 and two brakes 500 to create four gears. This allows the engine 10 to operate in a high-efficiency range in direct or parallel drive modes, further reducing vehicle fuel consumption.

[0063] See also Figure 1As shown, the motor drive assembly 700 includes a differential 710, a motor input shaft 720 and a power output shaft 730. The differential 710 is connected to the first output gear 600, the power output shaft 730 is connected to the differential 710 and the wheel 20, and the motor input shaft 720 is connected to the power output shaft 730 and the drive motor 30.

[0064] It should be noted that the motor input shaft 720 is connected to the drive motor 30, but is not limited to this. The motor input shaft 720 and the drive motor 30 can also be connected integrally, depending on the specific situation. The motor input shaft 720 can be connected to the power output shaft 730 through the differential 710, but is not limited to this. The motor input shaft 720 can also be directly connected to the power output shaft 730, depending on the specific situation.

[0065] See also Figure 1 and Figure 2 As shown, multiple gears can be formed by controlling the two clutches 400 and the two brakes 500, namely engine direct drive 1st gear, engine direct drive 2nd gear, engine direct drive 3rd gear and engine direct drive 4th gear. By connecting the motor input shaft 720 in engine direct drive 1st gear, engine direct drive 2nd gear, engine direct drive 3rd gear and engine direct drive 4th gear, respectively, parallel hybrid 1st gear, parallel hybrid 2nd gear, parallel hybrid 3rd gear and parallel hybrid 4th gear can be formed. The wheels 20 are jointly driven by the first output gear 600 and the motor input shaft 720. The engine 10 can be in a high-efficiency zone to further reduce the fuel consumption of the entire vehicle. At the same time, the power input of the drive motor 30 is connected to make the power of the entire vehicle better.

[0066] See also Figure 1 and Figure 2 As shown, when both the first clutch 410 and the second clutch 420 are disengaged, the engine 10 is completely decoupled and stops operating, and the drive motor 30 alone drives the wheels 20. When the vehicle is traveling at low speeds, the drive motor 30 alone drives the wheels 20, preventing the engine 10 from operating in an inefficient range, thereby further reducing vehicle fuel consumption.

[0067] See also Figure 1 As shown, the motor input shaft 720 is connected to the power output shaft 730 through the differential 710 .

[0068] It should be noted that the motor input shaft 720 can be connected to the power output shaft 730 through the differential 710, but is not limited thereto. The motor input shaft 720 can also be directly connected to the power output shaft 730, depending on the specific situation.

[0069] The motor input shaft 720 is connected to the power output shaft 730 through the differential 710. In this design, two wheels 20 can be driven by one drive motor 30. The motor input shaft 720 is directly connected to the power output shaft 730. In this design, two wheels 20 can be driven by two drive motors 30 respectively.

[0070] See also Figure 1 As shown, the motor drive assembly 700 also includes a reduction gear and a second output gear 740. The reduction gear includes a primary gear 750 and a secondary gear 760 that are coaxially connected. The primary gear 750 is connected to the motor input shaft 720 through the second output gear 740. The primary gear 750 is meshed with the first output gear 600, and the secondary gear 760 is connected to the differential 710. In other words, the second output gear 740 and the first output gear 600 are both meshed with the primary gear 750, and the secondary gear 760 is meshed with the gear of the differential 710. The power output by the second output gear 740 and the first output gear 600 is output to the differential 710 after being reduced by the two-stage gear.

[0071] It should be noted that the reduction gear may include a first-stage gear 750 and a second-stage gear 760 that are coaxially connected, but is not limited thereto. The reduction gear may also include a third-stage gear to form multiple gear reductions, which may be determined according to specific circumstances.

[0072] The motor drive assembly 700 also includes a reduction gear, which is engaged with the first output gear 600 and the second output gear 740 at the same time, combining the power output by the engine 10 and the drive motor 30 into one and also plays a role in reducing speed.

[0073] See also Figure 1 As shown, the at least two clutches 400 further include a third clutch 430 , which connects the generator 40 and the power input shaft 100 .

[0074] See also Figure 2 As shown, third clutch 430 is engaged, first clutch 410 and second clutch 420 are disengaged, and the hybrid coupling system switches to range-extended mode. In range-extended mode, engine 10 drives generator 40 via third clutch 430 to generate electricity, which in turn powers drive motor 30. The hybrid coupling system has a range-extended mode, in which engine 10 consistently operates at its most efficient point, further reducing vehicle fuel consumption.

[0075] In engine direct drive gear 1, 2, 3, and 4, the third clutch 430 engages, and the hybrid coupling system can correspondingly switch to driving charging gear 1, 2, 3, and 4. In driving charging mode, the engine 10 drives the generator 40 via the third clutch 430 to generate electricity, while simultaneously outputting power to the wheels 20 via the power input shaft 100. The hybrid coupling system has a driving charging mode. In this mode, the power of the engine 10 is used to drive the vehicle while also charging the vehicle. Charging can be performed when there is excess power output, further reducing vehicle fuel consumption.

[0076] When the first clutch 410, second clutch 420, first brake 510, and second brake 520 are engaged in engine direct drive gear 1, engine direct drive gear 2, engine direct drive gear 3, and engine direct drive gear 4, respectively, and the third clutch 430 is engaged, while the engine 10 is deactivated, the hybrid coupling system can accordingly switch to regenerative braking gear 1, regenerative braking gear 2, regenerative braking gear 3, and regenerative braking gear 4. In regenerative braking mode, power flows from the wheels 20 back to the power input shaft 100 in a direction opposite to the power output direction in engine direct drive gear 1, engine direct drive gear 2, engine direct drive gear 3, and engine direct drive gear 4, respectively. The power input shaft 100 drives the generator 40 via the third clutch 430 to generate electricity. The hybrid coupling system features a regenerative braking mode, allowing the vehicle to recover kinetic energy during deceleration, braking, and downhill driving, further reducing vehicle fuel consumption.

[0077] When first clutch 410 and second clutch 420 are disengaged, third clutch 430 is engaged, and engine 10 is running, the hybrid coupling system can correspondingly switch to the parking power generation mode. The hybrid coupling system has a parking power generation mode that allows the generator 40 to charge the vehicle while parked, meeting the user's parking power needs.

[0078] In summary, the hybrid coupling system, through control of clutch 400 and brake 500, enables multiple operating modes, including generator direct drive mode, pure electric mode, parallel hybrid mode, range-extended mode, driving charging mode, brake regeneration mode, and parking power generation mode. This ensures that engine 10 always operates in its high-efficiency range while recovering excess kinetic energy from the engine 10 or the vehicle, further reducing vehicle fuel consumption. Furthermore, by coordinating the opening and closing of clutch 400's slip friction and the speed and torque of drive motor 30, switching between different operating modes is achieved without power interruption, ensuring superior driving comfort.

[0079] Example 2

[0080] The difference between the second embodiment and the first embodiment is that the installation positions of the first clutch 410 and the second clutch 420 are different.

[0081] See also Figure 3 As shown, in this embodiment, a first clutch 410 connects the first sun gear 210 and the power input shaft 100, and a second clutch 420 connects the second sun gear 310 and the power input shaft 100. At least two brakes 500 include a first brake 510 and a second brake 520. The first brake 510 is connected to the second planet carrier 320, and the second brake 520 is connected to the second sun gear 310. The specific operating mode of the hybrid coupling system in this embodiment is similar to that of the first embodiment and will not be repeated here.

[0082] It should be noted that the at least two brakes 500 may further include a third brake connected to the first sun gear 210. When the hybrid coupling system is provided with three brakes 500, the three brakes 500 can be separated or combined as appropriate to achieve 3rd or 4th gear engine direct drive. Furthermore, under engine direct drive, the engine 10, generator 40, drive motor 30, and third clutch 430 can be used to achieve various operating modes, including pure electric mode, parallel hybrid mode, range extension mode, driving charging mode, braking recovery mode, and parking power generation mode.

[0083] The first clutch 410 is connected to the first sun gear 210 and the power input shaft 100, the second clutch 420 is connected to the second sun gear 310 and the power input shaft 100, the first brake 510 is connected to the second planetary carrier 320, and the second brake 520 is connected to the second sun gear 310. By controlling the two clutches 400 and the two brakes 500, a 4-speed engine direct drive can be formed. Under the engine direct drive, the engine 10, the generator 40, the drive motor 30 and the third clutch 430 are coordinated to realize various working modes such as pure electric mode, parallel hybrid mode, extended range mode, driving charging mode, braking recovery mode and parking power generation mode, so that the engine 10 can always operate in the high-efficiency zone, and the surplus kinetic energy of the engine 10 or the vehicle can be recovered, thereby further reducing the fuel consumption of the whole vehicle.

[0084] Example 3

[0085] The difference between the third embodiment and the first embodiment lies in that the installation positions of the first clutch 410 and the second clutch 420 are different, and the installation positions of the first brake 510 and the second brake 520 are also different.

[0086] See also Figure 4As shown, at least two clutches 400 include a first clutch 410 and a second clutch 420. The first clutch 410 connects the second sun gear 310 and the power input shaft 100, and the second clutch 420 connects the second planetary carrier 320 and the power input shaft 100. At least two brakes 500 include a first brake 510 and a second brake 520. The first brake 510 connects the second planetary carrier 320, and the second brake 520 connects the first sun gear 210. The specific operating mode of the hybrid coupling system in this embodiment is similar to that of the first embodiment and will not be repeated here.

[0087] It should be noted that the at least two brakes 500 may further include a third brake connected to the first sun gear 210. When the hybrid coupling system is provided with three brakes 500, the three brakes 500 can be separated or combined as appropriate to achieve 3rd or 4th gear engine direct drive. Furthermore, under engine direct drive, the engine 10, generator 40, drive motor 30, and third clutch 430 can be used to achieve various operating modes, including pure electric mode, parallel hybrid mode, range extension mode, driving charging mode, braking recovery mode, and parking power generation mode.

[0088] The first clutch 410 is connected to the second sun gear 310 and the power input shaft 100, the second clutch 420 is connected to the second planetary carrier 320 and the power input shaft 100, the first brake 510 is connected to the second planetary carrier 320, and the second brake 520 is connected to the first sun gear 210. By controlling the two clutches 400 and the two brakes 500, a 4-speed engine direct drive can be formed. Under the engine direct drive, the engine 10, the generator 40, the drive motor 30 and the third clutch 430 are coordinated to realize various working modes such as pure electric mode, parallel hybrid mode, extended range mode, driving charging mode, braking recovery mode and parking power generation mode, so that the engine 10 can always operate in the high-efficiency zone, and the surplus kinetic energy of the engine 10 or the vehicle can be recovered, thereby further reducing the fuel consumption of the whole vehicle.

[0089] Example 4

[0090] The difference between the fourth embodiment and the first embodiment is that the installation positions of the first brake 510 and the second brake 520 are different.

[0091] See also Figure 5As shown, at least two clutches 400 include a first clutch 410 and a second clutch 420. The first clutch 410 connects the first sun gear 210 and the power input shaft 100, and the second clutch 420 connects the second planetary carrier 320 and the power input shaft 100. At least two brakes 500 include a first brake 510 and a second brake 520. The first brake 510 connects the first sun gear 210, and the second brake 520 connects the second sun gear 310. The specific operating mode of the hybrid coupling system in this embodiment is similar to that of the first embodiment and will not be repeated here.

[0092] It should be noted that the at least two brakes 500 may further include a third brake connected to the first sun gear 210. When the hybrid coupling system is provided with three brakes 500, the three brakes 500 can be separated or combined as appropriate to achieve 3rd or 4th gear engine direct drive. Furthermore, under engine direct drive, the engine 10, generator 40, drive motor 30, and third clutch 430 can be used to achieve various operating modes, including pure electric mode, parallel hybrid mode, range extension mode, driving charging mode, braking recovery mode, and parking power generation mode.

[0093] The first clutch 410 is connected to the first sun gear 210 and the power input shaft 100, the second clutch 420 is connected to the second planetary carrier 320 and the power input shaft 100, the first brake 510 is connected to the first sun gear 210, and the second brake 520 is connected to the second sun gear 310. By controlling the two clutches 400 and the two brakes 500, a 4-speed engine direct drive can be formed. Under the engine direct drive, the engine 10, the generator 40, the drive motor 30 and the third clutch 430 are coordinated to realize various working modes such as pure electric mode, parallel hybrid mode, extended range mode, driving charging mode, braking recovery mode and parking power generation mode, so that the engine 10 can always operate in the high-efficiency zone, and the surplus kinetic energy of the engine 10 or the vehicle can be recovered, thereby further reducing the fuel consumption of the whole vehicle.

[0094] Example 5

[0095] This embodiment provides a hybrid vehicle. Figure 6 As shown, it includes a hybrid coupling system and a wheel 20. The hybrid coupling system includes the hybrid coupling system disclosed in Embodiments 1 to 4. The wheel 20 is connected to the power output shaft 730 of the hybrid coupling system.

[0096] The hybrid vehicle includes a hybrid coupling system, which includes a power input shaft 100, a first planetary gear row 200, a second planetary gear row 300, a clutch 400, a brake 500, a first output gear 600 and a motor drive assembly 700. The first planetary gear row 200 includes a first sun gear 210, a first planetary carrier 220, a first planetary gear 230 and a first ring gear 240. The second planetary gear row 300 includes a second sun gear 310, a second planetary carrier 320, a second planetary gear 330 and a second ring gear 340. The first planetary carrier 220 is arranged on the first planetary gear 230 and is connected to the second ring gear 340. The planetary carrier 320 is arranged on the second planetary gear 330 and is connected to the first ring gear 240. Two of the first sun gear 210, the second sun gear 310 and the second planetary carrier 320 are respectively connected to the power input shaft 100 through the clutch 400. Two of the first sun gear 210, the second sun gear 310 and the second planetary carrier 320 are respectively connected to the brake 500. By controlling the two clutches 400 and the two brakes 500, multiple gears can be formed, forming a series-parallel coupled power system with multiple gears, so that the engine 10 can be in the high-efficiency zone in the direct drive or parallel drive mode of the engine 10, so as to further reduce the fuel consumption of the whole vehicle.

[0097] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0098] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; 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 this application based on specific circumstances.

[0099] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0100] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A hybrid coupling system, characterized in that: include: Power input shaft, used to connect to the engine; A first planetary gear row includes a first sun gear, a first planet carrier, first planetary gears, and a first ring gear, wherein the first sun gear is disposed within the first ring gear, and the first planetary gears mesh with and connect the first sun gear and the first ring gear; a second planetary gear row, comprising a second sun gear, a second planet carrier, second planetary gears, and a second ring gear, wherein the second sun gear is disposed within the second ring gear, the second planetary gears are connected to the first sun gear and the first ring gear, the first planet carrier is disposed on the first planetary gears and connected to the second ring gear, and the second planet carrier is disposed on the second planetary gears and connected to the first ring gear; at least two clutches, two of the first sun gear, the second sun gear, and the second planet carrier are connected to the power input shaft via the clutches respectively; at least two brakes, two of the first sun gear, the second sun gear, and the second planet carrier being connected to the brakes respectively; a first output gear, disposed on the first planet carrier; The motor drive assembly is connected to the first output gear and the wheel.

2. The hybrid coupling system according to claim 1, characterized in that: At least two of the clutches include a first clutch and a second clutch, the first clutch connects the first sun gear and the power input shaft, the second clutch connects the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connects the second planetary carrier, and the second brake connects the second sun gear.

3. The hybrid coupling system according to claim 1, characterized in that: At least two of the clutches include a first clutch and a second clutch, the first clutch connects the first sun gear and the power input shaft, the second clutch connects the second sun gear and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connects the second planetary carrier, and the second brake connects the second sun gear.

4. The hybrid coupling system according to claim 1, characterized in that: At least two of the clutches include a first clutch and a second clutch, the first clutch connects the second sun gear and the power input shaft, the second clutch connects the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connects the second planetary carrier, and the second brake connects the first sun gear.

5. The hybrid coupling system according to claim 1, characterized in that: At least two of the clutches include a first clutch and a second clutch, the first clutch connects the first sun gear and the power input shaft, the second clutch connects the second planetary carrier and the power input shaft, and the two brakes include a first brake and a second brake, the first brake connects the first sun gear, and the second brake connects the second sun gear.

6. The hybrid coupling system according to any one of claims 1 to 5, characterized in that: At least two of the clutches further include a third clutch, and the third clutch connects the generator and the power input shaft.

7. The hybrid coupling system according to any one of claims 1 to 5, characterized in that: The motor drive assembly includes a differential, a motor input shaft and a power output shaft, the differential is connected to the first output gear, the power output shaft is connected to the differential and the wheels, and the motor input shaft is connected to the power output shaft and the drive motor.

8. The hybrid coupling system according to claim 7, characterized in that: The motor input shaft is connected to the power output shaft through the differential.

9. The hybrid coupling system according to claim 8, characterized in that: The motor drive assembly also includes a reduction gear and a second output gear, the reduction gear includes a primary gear and a secondary gear coaxially connected, the primary gear is connected to the motor input shaft through the second output gear, the primary gear is meshed with the first output gear, and the secondary gear is connected to the differential.

10. A hybrid vehicle, characterized in that: include: The hybrid coupling system according to any one of claims 1 to 9; The wheel is connected to the motor drive assembly.

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