Hybrid power gearbox and hybrid power system

Abstract

The utility model relates to a hybrid power gearbox and a hybrid power system and relates to the field of vehicles, an engine of a vehicle is connected with the hybrid power gearbox, and the hybrid power gearbox comprises a generator, a driving motor, a first gear mechanism, a second gear mechanism, a first claw clutch and a second claw clutch. The generator and the driving motor are arranged in parallel shafts; when the first claw-shaped clutch is connected with the gear set in the first gear mechanism and the second claw-shaped clutch is disconnected with the gear set in the second gear mechanism, the first claw-shaped clutch and the second claw-shaped clutch are used for enabling the engine to intervene in driving; when the first claw-shaped clutch is disconnected with the gear set in the first gear mechanism and the second claw-shaped clutch is connected with the gear set in the second gear mechanism, the driving motor is driven; and when the first claw clutch is connected with the gear group in the first gear mechanism and the second claw clutch is connected with the gear group in the second gear mechanism, the driving device is used for driving the engine or driving the engine and the driving motor.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicles, and in particular, to a hybrid power transmission and a hybrid power system. Background Art

[0002] With the development of hybrid vehicles, hybrid systems often include dual motors (a generator and a drive motor), which can be arranged coaxially or in parallel. A coaxial arrangement results in a larger gearbox axial dimension, making complex gear shifting difficult. A parallel arrangement, on the other hand, allows for complex gear shifting but can complicate the gearbox structure, increasing the difficulty of design and manufacturing. Therefore, there is room for improvement in the aforementioned technology. Therefore, designing a hybrid gearbox that balances compact size, low cost, multiple gears, and excellent performance is an urgent technical challenge. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a hybrid power transmission and a hybrid power system.

[0004] According to a first aspect of an embodiment of the present disclosure, a hybrid transmission is provided, which is applied to a vehicle, wherein an engine of the vehicle is connected to the hybrid transmission, and the hybrid transmission comprises: a generator, a drive motor, a first gear mechanism, a second gear mechanism, a first dog clutch, and a second dog clutch, wherein the generator and the drive motor are arranged with parallel shafts;

[0005] When the first dog clutch (71) is engaged with the gear set in the first gear mechanism (50) and the second dog clutch (72) is disconnected from the gear set in the second gear mechanism (60), the engine (10) is engaged in driving;

[0006] When the first dog clutch (71) is disconnected from the gear set in the first gear mechanism (50), and the second dog clutch (72) is engaged with the gear set in the second gear mechanism (60), the drive motor (40) is enabled to engage in driving;

[0007] When the first dog clutch (71) is engaged with the gear set in the first gear mechanism (50), and the second dog clutch (72) is engaged with the gear set in the second gear mechanism (60), the engine (10) is enabled to be driven, or the engine (10) and the drive motor (40) are enabled to be driven.

[0008] Optionally, the first gear mechanism includes: a first gear set, a second gear set, a third gear set and a gear;

[0009] Wherein, the first gear set, the second gear set, the third gear set and the gear are sequentially arranged between the drive motor and the second gear mechanism; the first dog clutch is arranged between the third gear set and the gear.

[0010] Optionally, the second gear mechanism includes: a fourth gear set and a fifth gear set;

[0011] The fourth gear set and the fifth gear set are sequentially arranged between the first gear mechanism and the wheels of the vehicle; the second dog clutch is arranged between the fourth gear set and the fifth gear set.

[0012] Optionally, the hybrid transmission further comprises: a generator input shaft and a sixth gear set;

[0013] Wherein, the generator is used to charge the power battery under the drive of the engine;

[0014] The sixth gear set is connected to the generator through the generator input shaft;

[0015] The sixth gear set, the generator and the first gear mechanism are sequentially arranged in the gearbox, or the generator, the sixth gear set and the first gear mechanism are sequentially arranged in the gearbox;

[0016] The power battery of the vehicle is connected to the generator and the drive motor respectively.

[0017] Optionally, when the driving mode of the vehicle is a pure electric driving mode, the engine and the generator are not working, and the power battery drives the drive motor to work; the first dog clutch is disconnected from the third gear set and the gear, and the second dog clutch is engaged with the fourth gear set or the fifth gear set, so that the vehicle is driven by the drive motor;

[0018] When the driving mode of the vehicle is a series driving mode, the engine is working and the power battery drives the drive motor to work; the generator charges the power battery driven by the engine; the first dog clutch is disconnected from the third gear set and the gear, and the second dog clutch is engaged with the fourth gear set or the fifth gear set to drive the vehicle through the drive motor.

[0019] Optionally, when the driving mode of the vehicle is pure engine driving mode,

[0020] The engine is operating, the generator is not operating, or the generator is driven by the engine to charge the power battery; the first dog clutch is engaged with the gear to drive the vehicle through the engine;

[0021] Alternatively, the engine is working, the generator is not working, or the generator charges the power battery driven by the engine; the first dog clutch is engaged with the third gear set, and the second dog clutch is engaged with the fourth gear set or with the fifth gear set to drive the vehicle through the engine.

[0022] Optionally, when the driving mode of the vehicle is a parallel driving mode, the engine is working, the generator is not working, and the power battery drives the drive motor to work; the first dog clutch is engaged with the third gear set or with the gear, and the second dog clutch is engaged with the fourth gear set or with the fifth gear set, so as to drive the vehicle together through the engine and the drive motor.

[0023] Optionally, when the driving mode of the vehicle is the parking power generation mode, the engine is running, the generator is driven by the engine to charge the power battery, and the drive motor is not running; the first dog clutch is disconnected from the third gear set and the gear, and the second dog clutch is disconnected from the fourth gear set and the fifth gear set;

[0024] When the driving mode of the vehicle is the energy recovery mode, the generator and / or the drive motor charges the power battery under the drive of the braking system of the vehicle; the first dog clutch is engaged with the third gear set or with the gear, and the second dog clutch is engaged with the fourth gear set or with the fifth gear set; or, the first dog clutch (71) is disconnected from the third gear set (53) and the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or with the fifth gear set (62).

[0025] Optionally, the engine includes an engine output shaft, the drive motor further includes a drive motor output shaft, and the hybrid transmission further includes: a transmission input shaft, a transmission output shaft, and a transmission intermediate shaft;

[0026] The engine output shaft, the gearbox input shaft and the gearbox output shaft are coaxial, the drive motor output shaft and the gearbox intermediate shaft are coaxial, and the drive motor output shaft, the generator input shaft and the gearbox intermediate shaft are all parallel to the gearbox output shaft;

[0027] The engine output shaft is connected to the first end of the torsional vibration damper of the vehicle; the drive motor is connected to the first gear set through the drive motor output shaft; the first end of the transmission input shaft is connected to the second end of the torsional vibration damper, and the first end of the transmission input shaft is connected to the dog clutch, the first gear set, the second gear set, the third gear set, and the first dog clutch are coaxially arranged and sequentially provided on the transmission input shaft; the gear, the fourth gear set, the second dog clutch and the fifth gear set are coaxially arranged and sequentially provided on the transmission output shaft; the second gear set, the third gear set, the fourth gear set and the fifth gear set are coaxially arranged and sequentially provided on the transmission intermediate shaft.

[0028] According to a second aspect of an embodiment of the present disclosure, a hybrid power system is provided, comprising an engine, a power battery, and the hybrid power transmission described in the first aspect of the present disclosure.

[0029] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0030] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, wherein the engine of the vehicle is connected to the hybrid transmission, and the hybrid transmission includes: a generator, a drive motor, a first gear mechanism, a second gear mechanism, a first dog clutch and a second dog clutch, and the generator and the drive motor are arranged with parallel axes; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is disconnected from the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving; when the first dog clutch is disconnected from the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the drive motor to intervene in driving; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving, or to enable the engine and the drive motor to intervene in driving. Through the above technical solution, by engaging or disengaging two dog clutches with different gear sets in the two gear mechanisms respectively, it is possible to enable the drive motor and / or engine to drive the vehicle in multiple gears, and the deeply integrated design of the various components of the gearbox can reduce the size of the gearbox and reduce manufacturing costs.

[0031] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0033] Figure 1 is a structural diagram of a hybrid transmission provided by an exemplary embodiment.

[0034] Figure 2 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0035] Figure 3 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0036] Figure 4 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0037] Figure 5 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0038] Figure 6 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0039] Figure 7 Schematic diagram of a power transmission path of a hybrid transmission provided by an exemplary embodiment.

[0040] Figure 8 is a schematic diagram of a hybrid power system provided by an exemplary embodiment.

[0041] Description of Reference Numerals

[0042] 10-Engine, 11-Engine output shaft, 20-Torsional vibration damper, 30-Generator, 31-Generator input shaft, 40-Drive motor, 22-Drive motor output shaft, 21-Gearbox input shaft, 22-Gearbox output shaft, 23-Gearbox intermediate shaft, 50-First gear mechanism, 51-First gear set, 52-Second gear set, 53-Third gear set, 54-Gear, 60-Second gear mechanism, 60-Fourth gear mechanism, 60-Fifth gear mechanism, 71-First dog clutch, 72-Second dog clutch, 80-Power battery. DETAILED DESCRIPTION

[0043] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0044] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0045] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0046] Figure 1 is a structural diagram of a hybrid transmission provided by an exemplary embodiment, which is applied to a vehicle, such as Figure 1 As shown, the engine 10 of the vehicle is connected to the hybrid transmission, which includes: a generator 30, a drive motor 40, a first gear mechanism 50, a second gear mechanism 60, a first dog clutch 71 and a second dog clutch 72, and the generator 30 and the drive motor 40 are arranged in parallel axes;

[0047] When the first dog clutch 71 is engaged with the gear set in the first gear mechanism 50 and the second dog clutch 72 is disengaged from the gear set in the second gear mechanism 60 , the engine 10 is engaged in driving.

[0048] When the first dog clutch 71 is disconnected from the gear set in the first gear mechanism 50 and the second dog clutch 72 is engaged with the gear set in the second gear mechanism 60 , the drive motor 40 is engaged in driving.

[0049] When the first dog clutch 71 is engaged with the gear set in the first gear mechanism 50 and the second dog clutch 72 is engaged with the gear set in the second gear mechanism 60, the engine 10 is used to intervene in the driving, or the engine 10 and the drive motor 40 are used to intervene in the driving.

[0050] For example, the first gear mechanism 50 and the second gear mechanism 60 may each include a plurality of gear sets. In different driving modes of the vehicle, the first dog clutch 71 may be engaged with the gear set in the first gear mechanism 50, and the second dog clutch 72 may be disconnected from the gear set in the second gear mechanism 60, so that the engine 10 intervenes in the driving, thereby transmitting the power generated by the engine 10 to the wheels; or, the first dog clutch 71 may be disconnected from the gear set in the first gear mechanism 50, and the second dog clutch 72 may be disconnected from the gear set in the second gear mechanism 60. 0 is engaged, so that the drive motor 40 intervenes in the driving, thereby transmitting the power generated by the drive motor 40 to the wheels; or, when the first dog clutch 71 is engaged with the gear set in the first gear mechanism 50, and the second dog clutch 72 can be engaged with the gear set in the second gear mechanism 60, so that the engine 10 intervenes in the driving, thereby transmitting the power generated by the engine 10 to the wheels, or the engine 10 and the drive motor 40 are jointly involved in the driving, thereby transmitting the power generated by the engine 10 and the drive motor 40 to the wheels. In summary, for this hybrid transmission, the engine 10 can independently drive the vehicle, the drive motor 40 can independently drive the vehicle, or the engine 10 and the drive motor 40 can jointly drive the vehicle. Therefore, when the engine 10 drives the vehicle, the first dog clutch 71 should be engaged with the gear set in the first gear mechanism 50; when the drive motor 40 drives the vehicle, the second dog clutch 72 should be engaged with the gear set in the second gear mechanism 60; and when the engine 10 and the drive motor 40 jointly drive the vehicle, the first dog clutch 71 should be engaged with the gear set in the first gear mechanism 50, and the second dog clutch 72 should be engaged with the gear set in the second gear mechanism 60. In summary, when the first dog clutch 71 is disconnected from the gear set in the first gear mechanism 50, the engine 10 can stop driving the vehicle; and when the second dog clutch 72 is disconnected from the gear set in the second gear mechanism 60, the drive motor 40 can stop driving the vehicle.

[0051] Alternatively, as Figure 1 As shown, the first gear mechanism 50 includes: a first gear set 51, a second gear set 52, a third gear set 53, and a gear 54;

[0052] The first gear set 51 , the second gear set 52 , the third gear set 53 and the gear 54 are sequentially arranged between the drive motor 40 and the second gear mechanism 60 ; the first dog clutch 71 is arranged between the third gear set 53 and the gear 54 .

[0053] For example, when the first dog clutch 71 is engaged with the third gear set 53 or the gear 54, the engine 10 can be driven. Furthermore, the third gear set 53 or the gear 54 have different speed ratios. Therefore, when the first dog clutch 71 is engaged with the third gear set 53 or the gear 54, the operating gear of the engine 10 is different, that is, the speed or speed range of the engine 10 is different.

[0054] Alternatively, as Figure 1 As shown, the second gear mechanism 60 includes: a fourth gear set 61 and a fifth gear set 62;

[0055] The fourth gear set 61 and the fifth gear set 62 are sequentially disposed between the first gear mechanism 50 and the wheels of the vehicle; the second dog clutch 72 is disposed between the fourth gear set 61 and the fifth gear set 62 .

[0056] For example, when the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62, the drive motor 40 can be engaged in driving. Furthermore, the fourth gear set 61 and the fifth gear set 62 have different speed ratios. Therefore, when the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62, the drive motor 40 operates in different gears and has a different speed or speed range.

[0057] Alternatively, as Figure 1 As shown, the hybrid transmission further includes: a generator input shaft 31 and a sixth gear set 55;

[0058] The generator 30 is used to charge the power battery 80 driven by the engine 10;

[0059] The sixth gear set 55 is connected to the generator 30 via the generator input shaft 31;

[0060] The sixth gear set 55, the generator 30 and the first gear mechanism 50 are sequentially arranged in the hybrid transmission, or the generator 30, the sixth gear set 55 and the first gear mechanism 50 are sequentially arranged in the hybrid transmission;

[0061] The power battery 80 of the vehicle is connected to the generator 30 and the drive motor 40 respectively.

[0062] Alternatively, as Figure 1 As shown, the engine 10 includes an engine output shaft 11, the drive motor further includes a drive motor output shaft 41, and the hybrid transmission further includes: a transmission input shaft 21, a transmission output shaft 22 and a transmission intermediate shaft 23;

[0063] The engine output shaft 11, the gearbox input shaft 21 and the gearbox output shaft 22 are coaxial, the drive motor output shaft 41 and the gearbox intermediate shaft 23 are coaxial, and the drive motor output shaft 41, the generator input shaft 31 and the gearbox intermediate shaft 23 are all parallel to the gearbox output shaft 22;

[0064] The engine output shaft 11 is connected to the first end of the torsional vibration damper 20 of the vehicle; the drive motor 40 is connected to the first gear set 51 through the drive motor output shaft 41; the first end of the transmission input shaft 21 is connected to the second end of the torsional vibration damper 20, and the first end of the transmission input shaft 21 is connected to the dog clutch 71. The first gear set 51, the second gear set 52, the third gear set 53, and the first dog clutch 71 are coaxially arranged and sequentially provided on the transmission input shaft 21; the gear 54, the fourth gear set 61, the second dog clutch 72 and the fifth gear set 62 are coaxially arranged and sequentially provided on the transmission output shaft 22; the second gear set 52, the third gear set 53, the fourth gear set 61 and the fifth gear set 62 are coaxially arranged and sequentially provided on the transmission intermediate shaft 23.

[0065] For example, Figure 1 In a hybrid transmission, the generator 30 and drive motor 40 can be deeply integrated into the transmission using a parallel axis arrangement. This structure significantly reduces the axial dimension of the hybrid transmission, making it more compact and facilitating overall vehicle layout. Both the generator 30 and drive motor 40 can utilize oil cooling technology, further enhancing the hybrid transmission's performance. Furthermore, the power battery 80 can be installed relatively close to the hybrid transmission, though this disclosure does not impose any restrictions on this.

[0066] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, wherein the engine of the vehicle is connected to the hybrid transmission, and the hybrid transmission includes: a generator, a drive motor, a first gear mechanism, a second gear mechanism, a first dog clutch and a second dog clutch, and the generator and the drive motor are arranged with parallel axes; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is disconnected from the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving; when the first dog clutch is disconnected from the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the drive motor to intervene in driving; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving, or to enable the engine and the drive motor to intervene in driving. Through the above technical solution, by engaging or disengaging two dog clutches with different gear sets in the two gear mechanisms respectively, it is possible to enable the drive motor and / or engine to drive the vehicle in multiple gears, and the deeply integrated design of the various components of the gearbox can reduce the size of the gearbox and reduce manufacturing costs.

[0067] For example, for Figure 1 The hybrid transmission vehicle shown can provide multiple driving modes for the vehicle, including but not limited to: pure electric driving mode, series driving mode, parallel driving mode, pure engine driving mode, and energy recovery mode. It is understood that this disclosure only describes relatively typical modes and does not fully cover all possible modes.

[0068] Optionally, when the driving mode of the vehicle is a pure electric driving mode, the engine 10 and the generator 30 do not work, and the power battery 80 drives the drive motor 40 to work; the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62 to drive the vehicle through the drive motor 40.

[0069] For example, Figure 1 Taking the hybrid transmission shown in FIG. as an example, when the driving mode of the vehicle is the pure electric driving mode, the vehicle can be driven by the first gear of the driving motor or the second gear of the driving motor. When the vehicle is driven by the first gear of the driving motor, the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61. The power transmission route of the driving motor 40 is as shown in FIG. Figure 2As shown in the direction of the middle arrow, the power battery 80 supplies power to the drive motor 40 to drive the drive motor to generate power. The power generated by the drive motor 40 passes through the first gear set 51, the second gear set 51, the gearbox intermediate shaft 23, and the fourth gear set 61 to the gearbox output shaft 22, and then transmits the power provided by the drive motor 40 to the wheels of the vehicle.

[0070] When the vehicle is driven by the second gear of the drive motor, the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fifth gear set 62. The power transmission route of the drive motor 40 is as follows: Figure 3 As indicated by the arrows, the power battery 80 supplies power to the drive motor 40, driving the drive motor to generate power. The power generated by the drive motor 40 is sequentially transmitted through the first gear set 51, the second gear set 51, the transmission intermediate shaft 23, and the fifth gear set 62 to the transmission output shaft 22, thereby transmitting the power provided by the drive motor 40 to the vehicle's wheels. The "first gear" and "second gear" of the drive motor 40 are used to distinguish the two gears of the drive motor 40 and are not intended to indicate the relative size of the two gears of the drive motor 40.

[0071] Optionally, when the driving mode of the vehicle is a series driving mode, the engine 10 works and the power battery 80 drives the drive motor 40 to work; the generator 30 charges the power battery 80 driven by the engine 10; the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62 to drive the vehicle through the drive motor 40.

[0072] For example, Figure 1 Taking the hybrid transmission shown in the figure as an example, compared with the above-mentioned pure electric drive mode, in the series drive mode, the generator 30 charges the power battery 80 of the vehicle under the drive of the engine 10, and the power transmission route of the engine 10 is as follows: Figure 4 As shown in the direction of the middle arrow, the power generated by the engine 10 is sequentially transmitted through the engine output shaft 11, the torsional vibration damper 20, the sixth gear set 55, the generator input shaft 31 to the generator 30, and the generator 30 charges the power battery 80; in addition, while the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, the drive motor 40 can work in the first gear of the drive motor to drive the vehicle. At this time, the power transmission route of the drive motor 40 is as follows Figure 2As shown, no further details are given here; or while the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, the drive motor 40 can work through the second gear of the drive motor to drive the vehicle. At this time, the power transmission route of the drive motor 40 is as shown Figure 3 As shown, no further details are given here.

[0073] Optionally, when the driving mode of the vehicle is pure engine driving mode,

[0074] The engine 10 is operating, the generator 30 is not operating, or the generator 30 is driven by the engine 10 to charge the power battery 80 ; the first dog clutch 71 is engaged with the gear 54 to drive the vehicle through the engine 10 ;

[0075] Alternatively, the engine 10 is working, the generator 30 is not working, or the generator 30 charges the power battery 80 driven by the engine 10; the first dog clutch 71 is engaged with the third gear set 53, and the second dog clutch 72 is engaged with the fourth gear set 61 or with the fifth gear set 62 to drive the vehicle through the engine 10.

[0076] For example, Figure 1 Taking the hybrid transmission shown in FIG. 1 as an example, when the driving mode of the vehicle is the pure engine driving mode, and the power battery 80 is charged by the engine 10, the power transmission route of the engine 10 to charge the power battery 80 is as follows: Figure 4 As shown, no further details are given here. Furthermore, the generator 30 can be selected to operate or not operate based on the SOC of the power battery 80. When the generator 30 is operating, it charges the power battery 80. For example, the generator 30 operates when the SOC of the power battery 80 is less than a preset threshold, and does not operate when the SOC of the power battery 80 is greater than or equal to the threshold. Alternatively, the generator 30 operates when the voltage of the power battery 80 is less than a preset threshold, and does not operate when the voltage of the power battery 80 is greater than or equal to the threshold.

[0077] In addition, when the driving mode of the vehicle is the pure engine driving mode, the vehicle can be driven by any one of the engine first gear, the engine second gear, or the engine third gear. When the vehicle is driven by the engine first gear, the first dog clutch 71 is engaged with the gear 54, and the second dog clutch 72 is disconnected from both the fourth gear set 61 and the fifth gear set 62. The power transmission route of the engine 10 is as follows: Figure 5As shown in the direction of the middle arrow, the power generated by the engine is sequentially transmitted through the engine output shaft 11, the torsional vibration damper 20, the transmission input shaft 22, the gear 54 to the transmission output shaft 22, and then the power provided by the engine 10 is transmitted to the wheels of the vehicle.

[0078] When the vehicle is driven through the second gear of the engine, the first dog clutch 71 is engaged with the third gear set 53, and the second dog clutch 72 is engaged with the fourth gear set 61. The power transmission path of the engine 10 is as follows: Figure 6 As shown in the direction of the middle arrow, the power generated by the engine passes through the engine output shaft 11, the torsional vibration damper 20, the transmission input shaft 22, the third gear set 53, the transmission intermediate shaft 23, the fourth gear set 61 to the transmission output shaft 22, and then transmits the power provided by the engine 10 to the wheels of the vehicle.

[0079] When the vehicle is driven through the second gear of the engine, the first dog clutch 71 is engaged with the third gear set 53, and the second dog clutch 72 is engaged with the fifth gear set 62. The power transmission route of the engine 10 is as follows: Figure 7 As shown in the direction of the middle arrow, the power generated by the engine passes through the engine output shaft 11, the torsional vibration damper 20, the transmission input shaft 22, the third gear set 53, the transmission intermediate shaft 23, the fifth gear set 62 to the transmission output shaft 22, and then transmits the power provided by the engine 10 to the wheels of the vehicle.

[0080] Optionally, when the driving mode of the vehicle is a parallel driving mode, the engine 10 is working, the generator 30 is not working, and the power battery 80 drives the drive motor 40 to work; the first dog clutch 71 is engaged with the third gear set 53 or with the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or with the fifth gear set 62, so as to drive the vehicle together through the engine 10 and the drive motor 40.

[0081] For example, Figure 1 Taking the hybrid transmission shown as an example, when the driving mode of the vehicle is the parallel driving mode, the vehicle can be driven by any one of the parallel first gear, parallel second gear, parallel third gear or parallel fourth gear;

[0082] When the vehicle is driven through the parallel first gear, the first dog clutch 71 is engaged with the third gear set 53, and the second dog clutch 72 is engaged with the fourth gear set 61. At this time, the power transmission path of the engine 10 is as follows: Figure 6 The direction indicated by the arrow in the figure, and the power transmission route of the drive motor 40 is as follows Figure 2 The direction indicated by the arrow is not described here in detail.

[0083] When the vehicle is driven through the parallel second gear, the first dog clutch 71 is engaged with the third gear set 53, and the second dog clutch 72 is engaged with the fifth gear set 62. At this time, the power transmission path of the engine 10 is as follows: Figure 6 The direction indicated by the arrow in the figure, and the power transmission route of the drive motor 40 is as follows Figure 3 The direction indicated by the arrow is not described here in detail.

[0084] When the vehicle is driven through the parallel third gear, the first dog clutch 71 is engaged with the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61. At this time, the power transmission path of the engine 10 is as follows: Figure 5 The direction indicated by the arrow in the figure, and the power transmission route of the drive motor 40 is as follows Figure 2 The direction indicated by the arrow is not described here in detail.

[0085] When the vehicle is driven through the parallel fourth gear, the first dog clutch 71 is engaged with the gear 54, and the second dog clutch 72 is engaged with the fifth gear set 62. At this time, the power transmission path of the engine 10 is as follows: Figure 5 The direction indicated by the arrow in the figure, and the power transmission route of the drive motor 40 is as follows Figure 3 The direction indicated by the arrow is not described here in detail.

[0086] To sum up, the vehicle can be driven by the first gear of the drive motor or the second gear of the drive motor in pure electric drive mode and series drive mode; the vehicle can be driven by any one of the first gear of the engine, the second gear of the engine or the third gear of the engine in pure engine drive mode; the vehicle can be driven by any one of the first gear of the parallel gear, the second gear of the parallel gear, the third gear of the parallel gear or the fourth gear in parallel drive mode; therefore, through the hybrid transmission, the vehicle can achieve multi-gear drive in different drive modes.

[0087] Optionally, when the driving mode of the vehicle is the parking power generation mode, the engine 10 is operating, the generator 30 is driven by the engine 10 to charge the power battery 80, and the drive motor 40 is not operating; the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is disconnected from the fourth gear set 61 and the fifth gear set 62;

[0088] When the driving mode of the vehicle is the energy recovery mode, the generator 30 and / or the drive motor 40 charges the power battery 80 under the drive of the vehicle's braking system; the first dog clutch 71 is engaged with the third gear set 53 or with the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or with the fifth gear set 62; or, the first dog clutch 71 is disconnected from the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or with the fifth gear set 62.

[0089] For example, when energy is recovered by the generator 30, the first dog clutch 71 is engaged with the third gear set 53 or the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62. When energy is recovered by the drive motor 40, the first dog clutch 71 is disconnected from both the third gear set 53 and the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62. When energy is recovered by both the generator 30 and the drive motor 40, the first dog clutch 71 is engaged with the third gear set 53 or the gear 54, and the second dog clutch 72 is engaged with the fourth gear set 61 or the fifth gear set 62.

[0090] For example, when the vehicle starts, it can be driven in pure electric drive mode, with the drive motor 40 driving the wheels. After the vehicle starts, the engine 10 can be activated based on the actual vehicle speed. When the power battery 80 is low on power, the vehicle can enter a series drive mode, with the engine 10 driving the generator 30 to generate electricity to replenish the power battery 80. When the power is sufficient, the vehicle can be driven in pure electric drive mode or parallel drive mode. When the vehicle is at high speed, it can be driven in pure engine drive mode. When the vehicle brakes, releases the accelerator, or relies on inertia, it can enter an energy recovery mode, converting the vehicle's kinetic energy into electrical energy through the generator 30 and drive motor 40 and storing it in the power battery 80.

[0091] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, wherein the engine of the vehicle is connected to the hybrid transmission, and the hybrid transmission includes: a generator, a drive motor, a first gear mechanism, a second gear mechanism, a first dog clutch and a second dog clutch, and the generator and the drive motor are arranged with parallel axes; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is disconnected from the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving; when the first dog clutch is disconnected from the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the drive motor to intervene in driving; when the first dog clutch is engaged with the gear set in the first gear mechanism and the second dog clutch is engaged with the gear set in the second gear mechanism, the transmission is used to enable the engine to intervene in driving, or to enable the engine and the drive motor to intervene in driving. Through the above technical solution, by engaging or disengaging two dog clutches with different gear sets in the two gear mechanisms respectively, it is possible to enable the drive motor and / or engine to drive the vehicle in multiple gears, and the deeply integrated design of the various components of the gearbox can reduce the size of the gearbox and reduce manufacturing costs.

[0092] Figure 8 is a structural diagram of a hybrid power system provided by an exemplary embodiment, such as Figure 8 As shown, it includes: engine, power battery, and Figures 1 to 7 In any of the hybrid transmissions shown in , the engine and the power battery are both connected to the hybrid transmission, and the connection relationship between the engine, the power battery and the hybrid transmission has been described in the previous embodiments and will not be repeated here.

[0093] In an exemplary embodiment, the present disclosure further provides a vehicle comprising the above-mentioned Figure 8 The hybrid powertrain system described in the illustrated embodiment.

[0094] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0096] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A hybrid transmission, characterized in that: Applied to a vehicle, the engine (10) of the vehicle is connected to the hybrid transmission, the hybrid transmission comprising: a generator (30), a drive motor (40), a first gear mechanism (50), a second gear mechanism (60), a first dog clutch (71) and a second dog clutch (72), the generator (30) and the drive motor (40) being arranged with parallel axes; When the first dog clutch (71) is engaged with the gear set in the first gear mechanism (50) and the second dog clutch (72) is disconnected from the gear set in the second gear mechanism (60), the engine (10) is engaged in driving; When the first dog clutch (71) is disconnected from the gear set in the first gear mechanism (50), and the second dog clutch (72) is engaged with the gear set in the second gear mechanism (60), the drive motor (40) is enabled to engage in driving; When the first dog clutch (71) is engaged with the gear set in the first gear mechanism (50), and the second dog clutch (72) is engaged with the gear set in the second gear mechanism (60), the engine (10) is enabled to be driven, or the engine (10) and the drive motor (40) are enabled to be driven.

2. The hybrid transmission according to claim 1, characterized in that: The first gear mechanism (50) comprises: a first gear set (51), a second gear set (52), a third gear set (53) and a gear (54); The first gear set (51), the second gear set (52), the third gear set (53) and the gear (54) are sequentially arranged between the drive motor (40) and the second gear mechanism (60); and the first dog clutch (71) is arranged between the third gear set (53) and the gear (54).

3. The hybrid transmission according to claim 2, characterized in that: The second gear mechanism (60) comprises: a fourth gear set (61), a fifth gear set (62); The fourth gear set (61) and the fifth gear set (62) are sequentially arranged between the first gear mechanism (50) and the wheels of the vehicle; and the second dog clutch (72) is arranged between the fourth gear set (61) and the fifth gear set (62).

4. The hybrid transmission according to claim 3, characterized in that: The hybrid transmission further comprises: a generator input shaft (31) and a sixth gear set (55); The generator (30) is used to charge the power battery (80) driven by the engine (10); The sixth gear set (55) is connected to the generator (30) via the generator input shaft (31); The sixth gear set (55), the generator (30), and the first gear mechanism (50) are sequentially arranged in the gearbox, or the generator (30), the sixth gear set (55), and the first gear mechanism (50) are sequentially arranged in the gearbox; The power battery (80) of the vehicle is connected to the generator (30) and the drive motor (40) respectively.

5. The hybrid transmission according to claim 4, characterized in that: When the driving mode of the vehicle is a pure electric driving mode, the engine (10) and the generator (30) do not work, and the power battery (80) drives the drive motor (40) to work; the first dog clutch (71) is disconnected from the third gear set (53) and the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or the fifth gear set (62) to drive the vehicle through the drive motor (40); When the driving mode of the vehicle is a series driving mode, the engine (10) is in operation, and the power battery (80) drives the drive motor (40) to operate; the generator (30) charges the power battery (80) driven by the engine (10); the first dog clutch (71) is disconnected from the third gear set (53) and the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or the fifth gear set (62) to drive the vehicle through the drive motor (40).

6. The hybrid transmission according to claim 4, characterized in that: When the driving mode of the vehicle is pure engine driving mode, The engine (10) is operating, the generator (30) is not operating, or the generator (30) is driven by the engine (10) to charge the power battery (80); the first dog clutch (71) is engaged with the gear (54) to drive the vehicle through the engine (10); Alternatively, the engine (10) is operating, the generator (30) is not operating, or the generator (30) is driven by the engine (10) to charge the power battery (80); the first dog clutch (71) is engaged with the third gear set (53), and the second dog clutch (72) is engaged with the fourth gear set (61) or with the fifth gear set (62), so as to drive the vehicle through the engine (10).

7. The hybrid transmission according to claim 4, characterized in that: When the driving mode of the vehicle is a parallel driving mode, the engine (10) is in operation, the generator (30) is in operation, and the power battery (80) drives the drive motor (40) to operate; the first dog clutch (71) is engaged with the third gear set (53) or the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or the fifth gear set (62), so that the vehicle is driven by the engine (10) and the drive motor (40).

8. The hybrid transmission according to claim 4, characterized in that: When the driving mode of the vehicle is the parking power generation mode, the engine (10) is in operation, the generator (30) is driven by the engine (10) to charge the power battery (80), and the drive motor (40) is not in operation; the first dog clutch (71) is disconnected from the third gear set (53) and the gear (54), and the second dog clutch (72) is disconnected from the fourth gear set (61) and the fifth gear set (62); When the driving mode of the vehicle is the energy recovery mode, the generator (30) and / or the drive motor (40) charges the power battery (80) under the drive of the braking system of the vehicle; the first dog clutch (71) is engaged with the third gear set (53) or the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or the fifth gear set (62); or, the first dog clutch (71) is disconnected from the third gear set (53) and the gear (54), and the second dog clutch (72) is engaged with the fourth gear set (61) or the fifth gear set (62).

9. The hybrid transmission according to claim 4, characterized in that: The engine (10) includes an engine output shaft (11), the drive motor further includes a drive motor output shaft (41), and the hybrid power transmission further includes: a transmission input shaft (21), a transmission output shaft (22), and a transmission intermediate shaft (23); The engine output shaft (11), the gearbox input shaft (21) and the gearbox output shaft (22) are coaxial, the drive motor output shaft (41) and the gearbox intermediate shaft (23) are coaxial, and the drive motor output shaft (41), the generator input shaft (31) and the gearbox intermediate shaft (23) are all parallel to the gearbox output shaft (22); The engine output shaft (11) is connected to the first end of the torsional vibration damper (20) of the vehicle; the drive motor (40) is connected to the first gear set (51) through the drive motor output shaft (41); the first end of the transmission input shaft (21) is connected to the second end of the torsional vibration damper (20), and the first end of the transmission input shaft (21) is connected to the first dog clutch (71); the first gear set (51), the second gear set (52), the third gear set (53), and the first dog clutch (71) are coaxially arranged and sequentially arranged on the transmission input shaft (21); the gear (54), the fourth gear set (61), the second dog clutch (72), and the fifth gear set (62) are coaxially arranged and sequentially arranged on the transmission output shaft (22); the second gear set (52), the third gear set (53), the fourth gear set (61), and the fifth gear set (62) are coaxially arranged and sequentially arranged on the transmission intermediate shaft (23).

10. A hybrid power system, characterized in that: include: An engine (10), a power battery (80), and a hybrid power transmission according to any one of claims 1 to 9.

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