Hybrid power gearbox and hybrid power system

Abstract

The invention relates to a hybrid power gearbox and a hybrid power system, and relates to the field of vehicles, the gearbox comprises a driving motor, a first gear mechanism, a first claw clutch and a second claw clutch; when at least one of the first claw-shaped clutch and the second claw-shaped clutch is connected with a gear group in the first gear mechanism, the transmission mechanism is used for transmitting power of the engine and / or the driving motor to the wheels so as to drive the vehicle; and when the first claw clutch and the second claw clutch are disconnected from the gear set in the first gear mechanism, the transmission of power to the engine and the driving motor is stopped so as to stop driving the vehicle. According to the gearbox, the two claw-shaped clutches are connected or disconnected with the different gear sets in the first gear mechanism, the engine can work under the three-speed gear, the driving motor can work under the two-speed gear, and due to the deep integration design of all parts of the gearbox, the size of the gearbox can be reduced, and the manufacturing cost can be reduced.

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] At present, the application of dual-motor hybrid transmission in the commercial vehicle market is still in the early development stage. The existing structures are either simply superimposed on the traditional transmission or matched with a high-power motor and a transmission with fewer gears. The former hybrid transmission is large in size and weight, while the latter transmission may increase the cost of the motor and have poor power performance. In order to make the hybrid transmission compact, reduce weight and cost, and further improve economy and power performance, designing a hybrid transmission with small size, low cost and excellent performance is a technical problem that needs to be solved urgently. Summary of the invention

[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, there is provided a hybrid transmission applied to a vehicle, wherein an engine of the vehicle is connected to the hybrid transmission, and the hybrid transmission comprises: a drive motor, a first gear mechanism, a first dog clutch and a second dog clutch;

[0005] When at least one of the first dog clutch and the second dog clutch is engaged with the gear set in the first gear mechanism, it is used to transmit the power of the engine and / or the drive motor to the wheels to drive the vehicle;

[0006] When the first dog clutch and the second dog clutch are disconnected from the gear set in the first gear mechanism, the power transmission to the engine and the drive motor is stopped to stop driving the vehicle.

[0007] Optionally, the vehicle further comprises: a generator;

[0008] When the speed of the engine and / or generator is adjusted to match the speed of the drive motor, at least one of the first dog clutch and the second dog clutch is engaged with the gear set in the first gear mechanism.

[0009] Optionally, the first gear mechanism includes: a first gear set, a second gear set, a third gear set, a fourth gear set and a gear;

[0010] Among them, the first gear set, the second gear set, the gear, the third gear set and the fourth gear set are arranged in sequence between the drive motor and the wheel of the vehicle; the first dog clutch is arranged between the second gear set and the gear, and the second dog clutch is arranged between the third gear set and the fourth gear set.

[0011] Optionally, when the second dog clutch is engaged with the third gear set or with the fourth gear set, and the first dog clutch is engaged with the second gear set or with a gear, the engine is used to intervene in the driving;

[0012] When the first dog clutch is disconnected from the second gear set and the gear, the engine is not involved in driving.

[0013] Optionally, when the driving mode of the vehicle is a pure electric driving mode, the engine and the generator do not work, and the drive motor works; the first dog clutch is disconnected from the second gear set and the gear, and the second dog clutch is engaged with the third gear set or with the fourth gear set to drive the vehicle through the drive motor.

[0014] Optionally, when the driving mode of the vehicle is a series driving mode, the engine is working, the drive motor is working, and the generator charges the power battery of the vehicle driven by the engine; the first dog clutch is disconnected from the second gear set and the gear, and the second dog clutch is engaged with the third gear set or the fourth gear set to drive the vehicle through the drive motor.

[0015] Optionally, when the driving mode of the vehicle is a parallel driving mode, the engine is working, the generator is not working, and the drive motor is working; the first dog clutch is engaged with the second gear set or with the gear, and the second dog clutch is engaged with the third gear set or with the fourth gear set, so that the vehicle is driven by the engine and the drive motor together;

[0016] When the driving mode of the vehicle is a pure engine driving mode, the engine is working, the generator is not working, or the generator charges the power battery of the vehicle under the drive of the engine; the first dog clutch is engaged with the second gear set or with the gear, and the second dog clutch is engaged with the third gear set or with the fourth gear set to drive the vehicle through the engine.

[0017] Optionally, when the driving mode of the vehicle is the parking power generation mode, the engine is working, the generator is driven by the engine to charge the power battery, and the drive motor is not working; the first dog clutch is disconnected from the second gear set and the gear, and the second dog clutch is disconnected from the third gear set and the fourth gear set;

[0018] 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 vehicle's braking system; the first dog clutch is engaged or disengaged with the second gear set or with the gear, and the second dog clutch is engaged with the third gear set or with the fourth gear set.

[0019] Optionally, the engine includes an engine output shaft, and the hybrid gearbox further includes: a transmission mechanism, a gearbox input shaft, a gearbox output shaft and a gearbox intermediate shaft, the gearbox input shaft is coaxial with the gearbox output shaft, and the gearbox output shaft is parallel to the gearbox intermediate shaft;

[0020] Among them, the engine output shaft is connected to the first end of the torsional damper of the vehicle; the first gear set is connected to the drive motor; the transmission mechanism is connected to the generator; the gearbox input shaft is connected to the second end of the torsional damper, the transmission mechanism, the generator, the drive motor, the first gear set, the second gear set and the first dog clutch are coaxially arranged and sequentially arranged on the gearbox input shaft; the gear, the third gear set, the second dog clutch and the fourth gear set are coaxially arranged and sequentially arranged on the gearbox output shaft; the first gear set, the second gear set, the third gear set and the fourth gear set are coaxially arranged and sequentially arranged on the gearbox intermediate shaft.

[0021] According to a second aspect of an embodiment of the present disclosure, a hybrid power system is provided, the hybrid power system comprising an engine, a power battery, and the hybrid power transmission described in the first aspect of the present disclosure.

[0022] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0023] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, and the transmission includes: a drive motor, a first gear mechanism, a first dog clutch and a second dog clutch; when at least one of the first dog clutch and the second dog clutch is engaged with the gear set in the first gear mechanism, it is used to transmit the power of the engine and / or the drive motor to the wheel to drive the vehicle; when the first dog clutch and the second dog clutch are disconnected from the gear set in the first gear mechanism, it is used to stop the power transmission to the engine and the drive motor to stop driving the vehicle. Through the above technical solution, the transmission is engaged or disconnected with different gear sets in the first gear mechanism through two dog clutches, so that the engine can be selected to work in a three-speed gear and the drive motor can be selected to work in a two-speed gear. In addition, the dog clutch replaces the traditional clutch and integrates the drive motor in the hybrid transmission, which can achieve a deeply integrated design, reduce the size of the transmission and reduce the manufacturing cost.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 is a structural diagram of a hybrid power transmission provided by an exemplary embodiment.

[0027] Figure 2 is a structural diagram of a hybrid power transmission provided by an exemplary embodiment.

[0028] Figure 3 is a structural diagram of a hybrid power transmission provided by an exemplary embodiment.

[0029] Figure 4 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0030] Figure 5 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0031] Figure 6 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0032] Figure 7 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0033] Figure 8is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0034] Fig. 9 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0035] Fig.10 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0036] Fig.11 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0037] Fig.12 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0038] Fig.13 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0039] Fig.14 is a schematic diagram of a power transmission route of a hybrid transmission provided by an exemplary embodiment.

[0040] Fig.15 is a structural diagram of a hybrid power system provided by an exemplary embodiment.

[0041] Fig.16 is a structural diagram of a hybrid power transmission provided by an exemplary embodiment.

[0042] Description of Reference Numerals

[0043] 10-engine, 11-engine output shaft, 20-torsional vibration damper, 30-generator, 31-gearbox input shaft, 32-gearbox output shaft, 33-gearbox intermediate shaft, 61-first dog clutch, 62-second dog clutch, 50-first gear mechanism, 51-first gear set, 52-second gear set, 53-third gear set, 54-fourth gear set, 55-gear, 40-drive motor, 70-transmission mechanism, 71-planetary gear, 72-second gear mechanism, 80-power battery. DETAILED DESCRIPTION

[0044] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0045] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0046] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0047] 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; the hybrid transmission includes: a drive motor 40, a first gear mechanism 50, a first dog clutch 61 and a second dog clutch 62; wherein the dog clutch is a dog clutch, also known as a dog clutch or a dog tooth clutch.

[0048] When at least one of the first dog clutch 61 and the second dog clutch 62 is engaged with the gear set in the first gear mechanism 50, the power of the engine 10 and / or the drive motor 40 is transmitted to the wheels to drive the vehicle;

[0049] When the first dog clutch 61 and the second dog clutch 62 are disconnected from the gear set in the first gear mechanism 50 , the power transmission to the engine 10 and the drive motor 40 is stopped to stop driving the vehicle.

[0050] Exemplarily, the first gear mechanism 50 may include a plurality of gear sets, and the first dog clutch 61 and the second dog clutch 62 may be engaged or disconnected with the gear set in the first gear mechanism 50 in different driving modes of the vehicle. In some working modes, at least one of the first dog clutch 61 and the second dog clutch 62 is engaged with the gear set in the first gear mechanism 50, so that the power output by at least one of the engine 10 and the drive motor 40 can be transmitted to the wheels of the vehicle through the first dog clutch 61 and / or the second dog clutch 62, and the gear set in the first gear mechanism 50 engaged with the first dog clutch 61 and / or the second dog clutch 62, so as to drive the vehicle; or, in other working modes, the first dog clutch 61 and the second dog clutch 62 are both disconnected from the gear set in the first gear mechanism 50, and the power transmission to the engine 10 and the drive motor 40 is stopped at this time, so as to stop driving the vehicle.

[0051] Optionally, the vehicle may further include a generator 30, which may be disposed inside the hybrid power transmission or outside the hybrid power transmission. Regardless of whether the generator 30 is disposed inside or outside the hybrid power transmission, the location of the generator 30 may refer to Figure 1 The positional relationship shown in FIG. is located between the engine 10 and the drive motor 40. Figure 1 In the hybrid transmission shown, when the rotation speed of the engine 10 and / or the generator 30 is adjusted to match the rotation speed of the drive motor 40, at least one of the first dog clutch 61 and the second dog clutch 62 is engaged with the gear set in the first gear mechanism 50. The matching of the rotation speed of the engine 10 and / or the generator 30 with the rotation speed of the drive motor 40 may include: the speed difference between the rotation speed of the engine 10 and / or the generator 30 and the rotation speed of the drive motor 40 is within a set speed difference range. Thus, the speed difference between the rotation speed of the engine 10 and / or the generator 30 and the rotation speed of the drive motor 40 can be adjusted to enter the speed difference range, so that the engine 10 is involved in the driving of the vehicle.

[0052] Optionally, the vehicle may further include a transmission mechanism 70, such as Figure 1 As shown:

[0053] The driving motor 40 is connected to the first gear mechanism 50 and the power battery 80 of the vehicle respectively;

[0054] The generator 30 is connected to the transmission mechanism 70 and the power battery 80 respectively. The transmission mechanism 70 is used to drive the generator 30 to charge the power battery 80 when the engine 10 is working, and the power battery 80 is used to supply power to the drive motor 40. It can be understood that the generator 30 and the transmission mechanism 70 can be integrated inside the hybrid power transmission gearbox, or can be arranged outside the hybrid power transmission gearbox.

[0055] Alternatively, if Figure 1 As shown, the first gear mechanism 50 may include: a first gear set 51, a second gear set 52, a third gear set 53, a fourth gear set 54 and a gear 55;

[0056] Among them, the first gear set 51, the second gear set 52, the gear 55, the third gear set 53 and the fourth gear set 54 are sequentially arranged between the drive motor 40 and the wheels of the vehicle; the first dog clutch 61 is arranged between the second gear set 52 and the gear 55, and the second dog clutch 62 is arranged between the third gear set 53 and the fourth gear set 54.

[0057] Optionally, when the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54, and the first dog clutch 61 is engaged with the second gear set 52 or the gear 55, the engine 10 is used to intervene in the driving;

[0058] When the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55 , the engine 10 is not involved in the driving.

[0059] Alternatively, if Figure 1 As shown, the engine 10 includes an engine output shaft 11, and the hybrid gearbox may further include: a gearbox input shaft 31, a gearbox output shaft 32 and a gearbox intermediate shaft 33, wherein the gearbox input shaft 31 is coaxial with the gearbox output shaft 32, and the gearbox output shaft 32 is parallel to the gearbox intermediate shaft 33;

[0060] The engine output shaft 11 is connected to the first end of the torsion damper 20 of the vehicle; the first gear set 51 is connected to the drive motor 40; the transmission mechanism 70 is connected to the generator 30; the gearbox input shaft 31 is connected to the second end of the torsion damper 20, the transmission mechanism 70, the generator 30, the drive motor 40, the first gear set 51, the second gear set 52 and the first dog clutch 61 are coaxially arranged and sequentially arranged on the gearbox input shaft 32; the first end of the gearbox output shaft 32 is connected to the gear 55, the gearbox output shaft 32 is centeredly connected to the second end of the gearbox input shaft 31, the gear 55, the third gear set 53, the second dog clutch 62 and the fourth gear set 54 are coaxially arranged and sequentially arranged on the gearbox output shaft 32; the first gear set 51, the second gear set 52, the third gear set 53 and the fourth gear set 54 are coaxially arranged and sequentially arranged on the gearbox intermediate shaft 33.

[0061] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, and the hybrid transmission includes: a drive motor, a first gear mechanism, a first dog clutch and a second dog clutch; when at least one of the first dog clutch and the second dog clutch is engaged with the gear set in the first gear mechanism, it is used to transmit the power of the engine and / or the drive motor to the wheel to drive the vehicle; when the first dog clutch and the second dog clutch are disconnected from the gear set in the first gear mechanism, it is used to stop the power transmission to the engine and the drive motor to stop driving the vehicle. Through the above technical solution, the transmission is engaged or disconnected with different gear sets in the first gear mechanism through two dog clutches, so that the engine can be selected to work in a three-speed gear and the drive motor can be selected to work in a two-speed gear. In addition, the dog clutch replaces the traditional clutch and integrates the drive motor in the hybrid transmission, which can achieve a deeply integrated design, reduce the size of the transmission and reduce the manufacturing cost.

[0062] Figure 2 is a structural diagram of a hybrid transmission provided by an exemplary embodiment, which is applied to a vehicle, such as Figure 2 As shown, in Figure 1 On the basis of the hybrid transmission shown, the transmission mechanism 70 can be a planetary gear 71, through which the power of the engine 10 can be transmitted to the generator 30, so as to enable the generator 30 to charge the power battery 80 of the vehicle; wherein, the planetary gear 71 can be connected to the generator 30 via a sun gear.

[0063] Figure 3 is a structural diagram of a hybrid transmission provided by an exemplary embodiment, which is applied to a vehicle, such as Figure 3 As shown, in Figure 1On the basis of the hybrid transmission shown, the transmission mechanism 70 can also be a second gear mechanism 72, through which the power of the engine 10 can be transmitted to the generator 30, so as to enable the generator 30 to charge the power battery 80 of the vehicle; wherein, the second gear mechanism 72 includes a fifth gear set 721 and a sixth gear set 722, and the fifth gear set 721 and the sixth gear set 722 are connected by a transmission shaft 723, and the transmission shaft 723 is parallel to the transmission input shaft 31, and the second gear mechanism 72 is connected to the generator 30 through the sixth gear set.

[0064] For example, Figures 1 to 3 The hybrid transmission shown in any of the items can deeply integrate the transmission mechanism 70, the generator 30 and the drive motor 40 into the transmission, which is beneficial to the oil cooling design of the generator and / or the drive motor and can achieve a highly integrated design; in addition, in another possible embodiment, in order to further reduce the size of the transmission and reduce the manufacturing cost, at least one of the transmission mechanism 70 and the generator 30 can be arranged outside the hybrid transmission, for example, the transmission mechanism 70 and the generator 30 can be integrated with the engine 10; or, in the above possible implementation, the torsional damper 20 can also be installed between the generator 30 and the drive motor 40 or at other positions that do not affect the function of the hybrid transmission of the present invention; in the above scenario, the hybrid transmission and Figures 1 to 3 The connection relationship and the position of the other components in the hybrid transmission shown in the figure may not be changed, that is, it can be understood that no matter the transmission mechanism 70 and / or the generator 30 are arranged outside the hybrid transmission or inside the hybrid transmission, the position relationship of the transmission mechanism 70 and the generator 30 relative to the other components of the hybrid transmission can refer to the above Figures 1 to 3 In summary, the changes in the positions of some components of the hybrid transmission are all simple deformations of the hybrid transmission disclosed in the present invention. In addition, the power battery 80 can be installed at a position closer to the hybrid transmission, and the present invention does not limit this.

[0065] Optionally, for a Figures 1 to 3 For any vehicle with a hybrid transmission shown in any item, the hybrid transmission 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, etc. It is understandable that the present disclosure only describes relatively typical modes and does not completely cover all achievable modes.

[0066] by Figure 2Taking the gearbox shown as an example, when the driving mode of the vehicle is the pure electric driving mode, the engine 10 and the generator 30 do not work, and the drive motor 40 works; the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and when the second dog clutch 62 is engaged with the third gear set 53 or engaged with the fourth gear set 54, the power provided by the drive motor 40 is transmitted to the wheel to drive the vehicle through the drive motor 40, and the drive motor 40 can achieve two-speed drive.

[0067] When the drive motor 40 is driven through the first gear, the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is engaged with the third gear set 53. The power transmission route of the drive motor 40 is as follows: Figure 4 As shown in the direction of the middle arrow, the power battery 80 supplies power to the drive motor 40. The power generated by the drive motor 40 passes through the first gear set 51, the gearbox intermediate shaft 33, and the third gear set 53 to the gearbox output shaft 32 in sequence, and then transmits the power provided by the drive motor 40 to the wheels of the vehicle.

[0068] When the drive motor 40 is driven through the second gear, the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is engaged with the fourth gear set 54. The power transmission route of the drive motor 40 is as follows: Figure 5 As shown in the direction of the middle arrow, the power battery 80 supplies power to the drive motor 40, and the power generated by the drive motor 40 is sequentially transmitted through the first gear set 51, the gearbox intermediate shaft 33, and the fourth gear set 54 to the gearbox output shaft 32, and then the power provided by the drive motor 40 is transmitted to the wheels of the vehicle. The first gear and the second gear of the drive motor 40 are used to distinguish the two gears of the drive motor 40, and are not used to indicate the size relationship between the two gears of the drive motor 40.

[0069] by Figure 2 Taking the gearbox shown as an example, when the driving mode of the vehicle is the series driving mode, the engine 10 is working, the drive motor 40 is working, and the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle; the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54, so as to transmit the power provided by the drive motor 40 to the wheels, so as to drive the vehicle through the drive motor 40.

[0070] Compared with the above-mentioned pure electric driving mode, in the series driving mode, the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, and the power transmission route is as follows: Figure 6As 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 torsion damper 20, the planetary gear 71 to the generator 30, and the generator 30 charges the power battery 80; in addition, when the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is engaged with the third gear set 53, the drive motor 40 drives the vehicle, and the power transmission route is as shown in FIG. Figure 4 When the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is engaged with the fourth gear set 54, the drive motor 40 drives the vehicle, and the power transmission route is as shown in FIG. Figure 5 Indicated by the direction of the arrow.

[0071] by Figure 2 Taking the gearbox shown as an example, when the driving mode of the vehicle is the parallel driving mode, the engine 10 is working, the generator 30 is not working (the non-working of the generator 30 can be understood as the generator 30 idling and not generating electricity), and the drive motor 40 is working; the first dog clutch 61 is engaged with the second gear set 52 or with the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or with the fourth gear set 54, so as to transmit the power provided by the engine 10 and the drive motor 40 to the wheels, so as to drive the vehicle together through the engine 10 and the drive motor 40.

[0072] When the first dog clutch 61 is engaged with the gear 55 and the second dog clutch 62 is engaged with the third gear set 53, the power transmission route is as follows: Figure 7 As shown in the direction of the middle arrow, the power generated by the engine 10 passes through the engine output shaft 11, the torsional damper 20, the gearbox input shaft 31, the gear 55 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32; the power battery 80 supplies power to the drive motor 40, and the power generated by the drive motor 40 passes through the first gear set 51, the gearbox intermediate shaft 33, the third gear set 53 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32.

[0073] When the first dog clutch 61 is engaged with the gear 55 and the second dog clutch 62 is engaged with the fourth gear set 54, the power transmission path is as follows: Figure 8As shown in the direction of the middle arrow, the power generated by the engine 10 passes through the engine output shaft 11, the torsional damper 20, the gearbox input shaft 31, the gear 55 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32; the power battery 80 supplies power to the drive motor 40, and the power generated by the drive motor 40 passes through the first gear set 51, the gearbox intermediate shaft 33, the fourth gear set 54 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32.

[0074] When the first dog clutch 61 is engaged with the second gear set 52, and the second dog clutch 62 is engaged with the third gear set 53, the power transmission path is as follows: Fig. 9 As shown in the direction of the middle arrow, the power generated by the engine 10 passes through the engine output shaft 11, the torsional damper 20, the gearbox input shaft 31, the second gear set 52, the gearbox intermediate shaft 33, the third gear set 53 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32; the power battery 80 supplies power to the drive motor 40, and the power generated by the drive motor 40 passes through the first gear set 51, the gearbox intermediate shaft 33, the third gear set 53 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32.

[0075] When the first dog clutch 61 is engaged with the second gear set 52, and the second dog clutch 62 is engaged with the fourth gear set 54, the power transmission path is as follows: Fig.10 As shown in the direction of the middle arrow, the power generated by the engine 10 passes through the engine output shaft 11, the torsional damper 20, the gearbox input shaft 31, the second gear set 52, the gearbox intermediate shaft 33, the fourth gear set 54 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32; the power battery 80 supplies power to the drive motor 40, and the power generated by the drive motor 40 passes through the first gear set 51, the gearbox intermediate shaft 33, the fourth gear set 54 to the gearbox output shaft 32 in sequence, and is transmitted to the wheels via the gearbox output shaft 32.

[0076] by Figure 2 Taking the gearbox shown in FIG. 1 as an example, when the driving mode of the vehicle is the pure engine driving mode, the engine 10 is working, the generator 30 is not working, or the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle; in addition, in the pure engine driving mode, the power provided by the engine 10 can be transmitted to the wheels through the engagement of the first dog clutch 61 and the second dog clutch 62 with the gear set in the first gear mechanism 50, so as to drive the vehicle through the engine 10. When the first dog clutch 61 and the second dog clutch 62 are engaged with different gear sets in the first gear mechanism 50, the engine 10 can achieve three-speed driving.

[0077] When the engine is driven through the first gear, if the generator 30 is not working, the first dog clutch 61 is engaged with the second gear set 52, and the second dog clutch 62 is engaged with the third gear set 53. The power transmission route of the engine 10 is as follows: Fig.11 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 torsion damper 20, the gearbox input shaft 31, the second gear set 52, the gearbox intermediate shaft 33, the third gear set 53 to the gearbox output shaft 32, and is transmitted to the wheels via the gearbox output shaft 32; if the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, the power transmission route of the engine 10 can be as follows Figure 6 The power transmission path from the engine 10 to the generator 30 is shown.

[0078] When the engine 10 is driven through the second gear, if the generator 30 is not working, the first dog clutch 61 is engaged with the second gear set 52, and the second dog clutch 62 is engaged with the fourth gear set 54. The power transmission route of the engine 10 is as follows: Fig.12 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 torsion damper 20, the gearbox input shaft 31, the second gear set 52, the gearbox intermediate shaft 33, the fourth gear set 54 to the gearbox output shaft 32, and is transmitted to the wheels via the gearbox output shaft 32; if the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, the power transmission route of the engine 10 can be as follows Figure 6 The power transmission path from the engine 10 to the generator 30 is shown.

[0079] When the engine 10 is driven through the third gear, if the generator 30 is not working, the first dog clutch 61 is engaged with the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54. Taking the engagement of the second dog clutch 62 with the third gear set 53 as an example, the power transmission route of the engine 10 is as follows: Fig.13 As shown in the direction of the arrow, the power generated by the engine 10 is sequentially transmitted through the engine output shaft 11, the torsion damper 20, the gearbox input shaft 31, the gear 55 to the gearbox output shaft 32, and is transmitted to the wheels via the gearbox output shaft 32; if the generator 30 is driven by the engine 10 to charge the power battery 80 of the vehicle, the power transmission route of the engine 10 can be as follows Figure 6 The power transmission route of the engine 10 to the generator 30 is shown. In addition, it can be understood that when the first dog clutch 61 is engaged with the gear 55 and the second dog clutch 62 is engaged with the fourth gear set 54, the power transmission route of the engine 10 is the same as that of the first dog clutch 61. Fig.13The first gear, second gear and third gear of the engine 10 are independent of the first gear and second gear of the drive motor 40, but are used to distinguish the three gears of the engine 10, and are not used to indicate the size relationship of the three gears of the engine 10.

[0080] For example, in the pure engine driving mode, the generator 30 can be selected to work or not work according to the SOC power of the power battery 80, and the generator 30 charges the power battery 80 when working. For example, the generator 30 works when the SOC power of the power battery 80 is less than a certain power threshold, and the generator 30 does not work when the SOC power of the power battery 80 is greater than the power threshold.

[0081] by Figure 2 Taking the gearbox shown as an example, when the driving mode of the vehicle is the parking power generation mode, the engine 10 is working, the generator 30 charges the power battery 80 driven by the engine 10, and the drive motor 40 is not working; the first dog clutch 61 is disconnected from the second gear set 52 and the gear 55, and the second dog clutch 62 is disconnected from the third gear set 53 and the fourth gear set 54.

[0082] by Figure 2 Taking the gearbox shown as an example, 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 driven by the braking system of the vehicle; the first dog clutch 61 is engaged or disengaged with the second gear set 52 or with the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or with the fourth gear set 54.

[0083] Exemplarily, when energy is recovered by the generator 30, the first dog clutch 61 is engaged with the second gear set 52 or the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54. When energy is recovered by the generator 30, the first dog clutch 61 is disconnected from the second gear set 52 or the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54. When energy is recovered by the generator 30 and the drive motor 40 at the same time, the first dog clutch 61 is engaged with the second gear set 52 or the gear 55, and the second dog clutch 62 is engaged with the third gear set 53 or the fourth gear set 54.

[0084] In another possible implementation, Figure 3 The hybrid transmission shown also has the driving modes as described above, including but not limited to: pure electric driving mode, series driving mode, parallel driving mode, pure engine driving mode and energy recovery mode, etc.

[0085] Should Figure 3 The hybrid transmission shown in Figure 2 The hybrid transmission shown in FIG. 1 is the same as the hybrid transmission shown in FIG. 1 except that the power transmission route is different when the engine 10 drives the generator 30 to charge the power battery 80. Figure 2 The hybrid transmission is the same as that shown in the figure and will not be described in detail. Figure 3 The power transmission route of the hybrid transmission shown in FIG. 1 is as follows when the engine 10 drives the generator 30 to charge the power battery 80. Fig.14 Indicated by the direction of the arrow.

[0086] For example, when the vehicle starts, the pure electric drive mode can be turned on, and the wheels are driven by the drive motor 40. After the vehicle starts, the engine 10 is used to drive the vehicle according to the actual vehicle speed. When the power battery 80 is insufficient, the vehicle can enter the series drive mode, and the engine 10 drives the generator 30 to generate electricity to supplement the power of the power battery 80; when the power is sufficient, the vehicle can be driven in the pure electric drive mode or the parallel drive mode; and when the vehicle is in a high-speed working condition, it can be driven in the pure engine drive mode; when the vehicle brakes, releases the accelerator, or drives by inertia, it can enter the energy recovery mode, and the vehicle kinetic energy is converted into electrical energy through the generator 30 and the drive motor 40, and stored in the power battery 80.

[0087] In the above technical solution, a hybrid transmission is provided, which is applied to a vehicle, and the hybrid transmission includes: a drive motor, a first gear mechanism, a first dog clutch and a second dog clutch; when at least one of the first dog clutch and the second dog clutch is engaged with the gear set in the first gear mechanism, it is used to transmit the power of the engine and / or the drive motor to the wheel to drive the vehicle; when the first dog clutch and the second dog clutch are disconnected from the gear set in the first gear mechanism, it is used to stop the power transmission to the engine and the drive motor to stop driving the vehicle. Through the above technical solution, the transmission is engaged or disconnected with different gear sets in the first gear mechanism through two dog clutches, so that the engine can be selected to work in a three-speed gear and the drive motor can be selected to work in a two-speed gear. In addition, the dog clutch replaces the traditional clutch and integrates the drive motor in the hybrid transmission, which can achieve a deeply integrated design, reduce the size of the transmission and reduce the manufacturing cost.

[0088] Fig.15 is a structural diagram of a hybrid power system provided by an exemplary embodiment, such as Fig.15 As shown, it includes: an engine, a power battery, and Figures 1 to 14In 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.

[0089] In an exemplary embodiment, the present disclosure also provides a vehicle, the vehicle comprising the above Fig.15 A hybrid powertrain system is described in the illustrated embodiment.

[0090] In another possible implementation, the third gear set 53, the second dog clutch 62 and the fourth gear set 54 can be regarded as a shift mechanism. The hybrid transmission can be connected in parallel with one or more shift mechanisms at a position after the first gear mechanism 50, so as to achieve multi-gear switching of the hybrid transmission. Its operation mode is similar to or the same as that of the above embodiment and will not be described in detail herein. Fig.16 As shown, a shifting mechanism is connected in parallel after the first gear mechanism 50, including a third dog clutch 62', a seventh gear set 53' and an eighth gear set 54', so that the gearbox can switch more gears, wherein the transmission mechanism 70 can be a planetary gear 71 or a second gear mechanism 72.

[0091] 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 in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0092] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0093] In addition, 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 power transmission, characterized in that: Applied to a vehicle, the engine (10) of the vehicle is connected to the hybrid power transmission, the hybrid power transmission comprising: a drive motor (40), a first gear mechanism (50), a first dog clutch (61) and a second dog clutch (62); When at least one of the first dog clutch (61) and the second dog clutch (62) is engaged with the gear set in the first gear mechanism (50), the power of the engine (10) and / or the drive motor (40) is transmitted to the wheels to drive the vehicle; When the first dog clutch (61) and the second dog clutch (62) are disconnected from the gear set in the first gear mechanism (50), the power transmission to the engine (10) and the drive motor (40) is stopped to stop driving the vehicle.

2. The hybrid transmission according to claim 1, characterized in that: The vehicle further comprises: a generator (30); When the rotation speed of the engine (10) and / or the generator (30) is adjusted to match the rotation speed of the drive motor (40), at least one of the first dog clutch (61) and the second dog clutch (62) is engaged with the gear set in the first gear mechanism (50).

3. The hybrid transmission according to claim 2, characterized in that: The first gear mechanism (50) comprises: a first gear set (51), a second gear set (52), a third gear set (53), a fourth gear set (54) and a gear (55); The first gear set (51), the second gear set (52), the gear (55), the third gear set (53) and the fourth gear set (54) are sequentially arranged between the drive motor (40) and the wheels of the vehicle; the first dog clutch (61) is arranged between the second gear set (52) and the gear (55), and the second dog clutch (62) is arranged between the third gear set (53) and the fourth gear set (54).

4. The hybrid transmission according to claim 3, characterized in that: When the second dog clutch (62) is engaged with the third gear set (53) or the fourth gear set (54), and the first dog clutch (61) is engaged with the second gear set (52) or the gear (55), the engine (10) is engaged in driving; When the first dog clutch (61) is disconnected from the second gear set (52) and the gear (55), the engine (10) is not involved in driving.

5. The hybrid transmission according to claim 3, 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 drive motor (40) works; the first dog clutch (61) is disconnected from the second gear set (52) and the gear (55), and the second dog clutch (62) is engaged with the third gear set (53) or the fourth gear set (54) to drive the vehicle through the drive motor (40).

6. The hybrid transmission according to claim 3, characterized in that: When the driving mode of the vehicle is a series driving mode, the engine (10) is working, the drive motor (40) is working, and the generator (30) is driven by the engine (10) to charge the power battery (80) of the vehicle; the first dog clutch (61) is disconnected from the second gear set (52) and the gear (55), and the second dog clutch (62) is engaged with the third gear set (53) or the fourth gear set (54) to drive the vehicle through the drive motor (40).

7. The hybrid transmission according to claim 3, characterized in that: 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 drive motor (40) is working; the first dog clutch (61) is engaged with the second gear set (52) or with the gear (55), and the second dog clutch (62) is engaged with the third gear set (53) or with the fourth gear set (54), so that the vehicle is driven by the engine (10) and the drive motor (40); When the driving mode of the vehicle is a pure engine driving mode, the engine (10) is working, the generator (30) is not working, or the generator (30) is driven by the engine (10) to charge the power battery (80) of the vehicle; the first dog clutch (61) is engaged with the second gear set (52) or with the gear (55), and the second dog clutch (62) is engaged with the third gear set (53) or with the fourth gear set (54), so as to drive the vehicle through the engine (10).

8. The hybrid transmission according to claim 3, characterized in that: When the driving mode of the vehicle is the parking power generation mode, the engine (10) is working, the generator (30) is driven by the engine (10) to charge the power battery (80) of the vehicle, and the drive motor (40) is not working; the first dog clutch (61) is disconnected from the second gear set (52) and the gear (55), and the second dog clutch (62) is disconnected from the third gear set (53) and the fourth gear set (54); 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 (61) is engaged with the second gear set (52) or with the gear (55), and the second dog clutch (62) is engaged or disconnected with the third gear set (53) or with the fourth gear set (54).

9. The hybrid transmission according to claim 3, characterized in that: The engine (10) comprises an engine output shaft (11), and the hybrid power transmission further comprises: a transmission mechanism (70), a transmission input shaft (31), a transmission output shaft (32) and a transmission intermediate shaft (33), wherein the transmission input shaft (31) is coaxial with the transmission output shaft (32), and the transmission output shaft (32) and the transmission intermediate shaft (33) are parallel; The engine output shaft (11) is connected to a first end of a torsional damper (20) of the vehicle; the first gear set (51) is connected to the drive motor (40); the transmission mechanism (70) is connected to the generator (30); the gearbox input shaft (31) is connected to a second end of the torsional damper (20); the transmission mechanism (70), the generator (30), the drive motor (40), the first gear set (51), the second gear set (52) and the first dog clutch (61) are coaxially arranged and sequentially arranged on the gearbox input shaft (32); the gear (55), the third gear set (53), the second dog clutch (62) and the fourth gear set (54) are coaxially arranged and sequentially arranged on the gearbox output shaft (32); the first gear set (51), the second gear set (52), the third gear set (53) and the fourth gear set (54) are coaxially arranged and sequentially arranged on the gearbox intermediate shaft (33).

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

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