Power assembly and vehicle with same

Abstract

The utility model discloses a power assembly and a vehicle with the same. Belongs to the technical field of vehicles, the power assembly comprises an engine, a C0 clutch, an ECVT transmission, a front wheel clutch, a coupler and a P4 motor, the ECVT transmission comprises a first planetary gear mechanism, a P2 motor and a die changing synchronizer, and by switching the working states of the C0 clutch, the die changing synchronizer of the ECVT transmission, the front wheel clutch, the coupler, the P2 motor of the ECVT transmission, the P4 motor and the engine, the die changing synchronizer of the ECVT transmission can be switched to the die changing synchronizer of the ECVT transmission. The multiple working modes of the vehicle can be switched, so that the vehicle can adapt to different driving environments and requirements, and the drivability and fuel economy of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular, to a powertrain and a vehicle having the same. Background Art

[0002] In a traditional powertrain, the working mode of a vehicle is usually fixed, and it is impossible to flexibly switch the working mode of the vehicle according to different driving environments, and it is impossible to optimize the power output according to real-time road conditions, which reduces the driving performance and fuel economy of the vehicle. In order to meet the increasingly changing market demands, it is urgent to develop a powertrain that can achieve multi-mode switching. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the above technical problems in the prior art to some extent. For this purpose, the utility model provides a powertrain that can switch multiple working modes of a vehicle.

[0004] The utility model also provides a vehicle having the above powertrain.

[0005] The powertrain according to an embodiment of the utility model includes: an engine, a C0 clutch, an ECVT transmission, a front-wheel clutch, a coupler, and a P4 motor. The ECVT transmission is selectively connected to the engine through the C0 clutch, and the ECVT transmission is adapted to be selectively connected to the front wheels of the vehicle through the front-wheel clutch; the ECVT transmission is adapted to be selectively connected to the rear wheels of the vehicle through the coupler; the P4 motor is adapted to be connected to the rear wheels; wherein, the ECVT transmission includes: a first planetary gear mechanism, a P2 motor, and a mode-switching synchronizer. The first planetary gear mechanism includes: a first sun gear, a first planet gear, a first planet carrier, and a first ring gear. The first sun gear is connected to the P2 motor, the first planet gear is connected to the C0 clutch through the first planet carrier, the mode-switching synchronizer is the output end of the ECVT transmission, the mode-switching synchronizer is connected to the first ring gear, and the mode-switching synchronizer is also selectively combined with the first sun gear.

[0006] The powertrain according to an embodiment of the utility model can switch multiple working modes of the vehicle by switching the working states of the C0 clutch, the mode-switching synchronizer of the ECVT transmission, the front-wheel clutch, the coupler, the P2 motor of the ECVT transmission, the P4 motor, and the engine, so as to enable the vehicle to adapt to different driving environments and requirements, and is beneficial to improving the driving performance and fuel economy of the vehicle.

[0007] According to some embodiments of the utility model, at least part of the first planetary gear mechanism is disposed inside the P2 motor.

[0008] According to some embodiments of the present utility model, the powertrain further includes: a main transmission, which is drivingly connected between the die-changing synchronizer and the front-wheel clutch.

[0009] According to some embodiments of the present utility model, the powertrain further includes: a sub-transmission, which is drivingly connected between the main transmission and the front-wheel clutch.

[0010] According to some embodiments of the present utility model, the sub-transmission includes: a housing and a second planetary gear mechanism and a shift synchronizer disposed within the housing. The second planetary gear mechanism includes: a second sun gear, second planet gears, a second planet carrier, and a second ring gear. The second sun gear is drivingly connected to the main transmission, the second ring gear is fixedly connected to the housing, both the front-wheel clutch and the coupler are drivingly connected to the shift synchronizer, and the shift synchronizer is selectively drivingly connected to the second sun gear and the second planet carrier connected to the second planet gears.

[0011] According to some embodiments of the present utility model, the powertrain further includes: a front drive shaft and a front axle, the front axle being adapted to be drivingly connected to the front wheels, and the front drive shaft being drivingly connected between the front axle and the front-wheel clutch.

[0012] According to some embodiments of the present utility model, the front-wheel clutch is disposed within the housing, and the front-wheel clutch is drivingly connected to the front drive shaft within the housing through a drive chain.

[0013] According to some embodiments of the present utility model, the powertrain further includes: a rear transmission, and the P4 motor is adapted to be drivingly connected to the rear wheels through the rear transmission.

[0014] According to some embodiments of the present utility model, the powertrain further includes: a controller, which is communicatively connected to the engine, the C0 clutch, the ECVT transmission, the front-wheel clutch, the coupler, and the P4 motor respectively.

[0015] A vehicle according to another embodiment of the present utility model includes the above-mentioned powertrain.

[0016] By switching the operating states of the C0 clutch, the die-changing synchronizer of the ECVT transmission, the front-wheel clutch, the coupler, the P2 motor of the ECVT transmission, the P4 motor, and the engine, the vehicle according to the embodiment of the present utility model can achieve switching between multiple operating modes of the vehicle, so as to facilitate the vehicle to adapt to different driving environments and requirements, and is beneficial to improving the driving performance and fuel economy of the vehicle.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] Figure 1 is a schematic diagram of a powertrain according to an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of a C0 clutch and an ECVT transmission according to an embodiment of the present utility model;

[0020] Figure 3 is a schematic diagram of a range gearbox and a rear propeller shaft according to an embodiment of the present utility model.

[0021] Reference Numerals:

[0022] Engine 1; C0 clutch 2;

[0023] ECVT transmission 3; First planetary gear mechanism 31; First sun gear 311; First planet gear 312; First planet carrier 313; First ring gear 314; P2 motor 32; Die change synchronizer 33;

[0024] Front-wheel clutch 4; Coupler 5; P4 motor 6;

[0025] Main transmission 7; Range gearbox 8; Housing 81; Second planetary gear mechanism 82; Second sun gear 821; Second planet gear 822; Second planet carrier 823; Second ring gear 824; Shift synchronizer 83;

[0026] Front propeller shaft 9; Front axle 10; Drive chain 11; Rear transmission 12; Rear propeller shaft 13; Rear axle 14; P4 electric axle 15; Front wheels 16; Rear wheels 17;

[0027] Powertrain 100. Detailed Description of the Embodiments

[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or a connection that allows mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] The following will Figures 1 - 3 describe in detail the powertrain 100 according to an embodiment of the present utility model and a vehicle having the same.

[0033] Referring to Figure 1 and Figure 2 As shown, the powertrain 100 according to an embodiment of the present utility model includes an engine 1, a C0 clutch 2, an ECVT transmission 3, a front-wheel clutch 4, a coupler 5, and a P4 motor 6. The ECVT transmission 3 is selectively drivingly connected to the engine 1 through the C0 clutch 2. The ECVT transmission 3 is adapted to be selectively drivingly connected to the front wheels 16 of the vehicle through the front-wheel clutch 4. The ECVT transmission 3 is adapted to be selectively drivingly connected to the rear wheels 17 of the vehicle through the coupler 5. The P4 motor 6 is adapted to be drivingly connected to the rear wheels 17.

[0034] Among them, the ECVT transmission 3 includes a first planetary gear mechanism 31, a P2 motor 32, and a die-changing synchronizer 33. The first planetary gear mechanism 31 includes: a first sun gear 311, a first planetary gear 312, a first planet carrier 313, and a first ring gear 314. The first sun gear 311 is drivingly connected to the P2 motor 32. The first planetary gear 312 is drivingly connected to the C0 clutch 2 through the first planet carrier 313. The die-changing synchronizer 33 is the output end of the ECVT transmission 3. The die-changing synchronizer 33 is drivingly connected to the first ring gear 314, and the die-changing synchronizer 33 is also selectively engaged with the first sun gear 311.

[0035] It should be noted that the C0 clutch 2 can have two working states: engaged and open. When the C0 clutch 2 is in the engaged state, the ECVT transmission 3 is drivingly connected to the engine 1 through the C0 clutch 2. When the C0 clutch 2 is in the open state, the driving connection between the ECVT transmission 3 and the engine 1 is disconnected.

[0036] The front-wheel clutch 4 can have two working states: engaged and open. When the front-wheel clutch 4 is in the engaged state, the ECVT transmission 3 is drivingly connected to the front wheels 16 of the vehicle through the front-wheel clutch 4. When the front-wheel clutch 4 is in the open state, the driving connection between the ECVT transmission 3 and the front wheels 16 of the vehicle is disconnected.

[0037] The coupler 5 can have two working states: engaged and open. When the coupler 5 is in the engaged state, the ECVT transmission 3 is drivingly connected to the rear wheels 17 of the vehicle through the coupler 5. When the coupler 5 is in the open state, the driving connection between the ECVT transmission 3 and the rear wheels 17 of the vehicle is disconnected.

[0038] In the first planetary gear mechanism 31 of the ECVT transmission 3, the first planet carrier 313 is connected to the first planetary gear 312, and the first planetary gear 312 meshes with the first sun gear 311 and the first ring gear 314 respectively.

[0039] The die-changing synchronizer 33 of the ECVT transmission 3 can have two working states: engaged and open. When the die-changing synchronizer 33 is in the engaged state, the die-changing synchronizer 33 is engaged with the first sun gear 311. Since the die-changing synchronizer 33 is also drivingly connected to the first ring gear 314, at this time, the first sun gear 311 and the first ring gear 314 are locked and cannot move relative to each other. When the die-changing synchronizer 33 is in the open state, the driving connection between the die-changing synchronizer 33 and the first sun gear 311 is disconnected, and the first sun gear 311 and the first ring gear 314 are unlocked and can move relative to each other.

[0040] By switching the operating states of the C0 clutch 2, the die-changing synchronizer 33 of the ECVT transmission 3, the front-wheel clutch 4, the coupler 5, the P2 motor 32 of the ECVT transmission 3, the P4 motor 6, and the engine 1, various operating modes of the vehicle can be achieved, so as to facilitate the vehicle to adapt to different driving environments and requirements, which is beneficial to improving the driving performance and fuel economy of the vehicle.

[0041] Specifically, by switching the operating states of the C0 clutch 2, the die-changing synchronizer 33 of the ECVT transmission 3, the front-wheel clutch 4, the coupler 5, the P2 motor 32 of the ECVT transmission 3, the P4 motor 6, and the engine 1, the following operating modes of the vehicle can be achieved:

[0042] EV (pure electric) rear-wheel drive mode: The C0 clutch 2 can be switched to the open state, the die-changing synchronizer 33 of the ECVT transmission 3 can be switched to the open state, the front-wheel clutch 4 can be switched to the open state, the coupler 5 is switched to the open state, both the engine 1 and the P2 motor 32 do not work, and the P4 motor 6 works.

[0043] Among them, when the coupler 5 is in the open state, the transmission connection between the ECVT transmission 3 and the rear wheels 17 of the vehicle is disconnected, and the power output by the P4 motor 6 is transmitted to the rear wheels 17 of the vehicle to drive the rear wheels 17 to rotate, realizing the pure electric rear-wheel drive mode of the vehicle.

[0044] EV (pure electric) four-wheel drive mode: The C0 clutch 2 is switched to the open state, the die-changing synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front-wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the open state, both the P2 motor 32 and the P4 motor 6 work, and the engine 1 does not work.

[0045] Among them, when the coupler 5 is in the open state, the transmission connection between the ECVT transmission 3 and the rear wheels 17 of the vehicle is disconnected, and the power output by the P4 motor 6 is transmitted to the rear wheels 17 of the vehicle to drive the rear wheels 17 to rotate. The die-changing synchronizer 33 is in the engaged state, and the die-changing synchronizer 33 is engaged with the first sun gear 311. The power output by the P2 motor 32 is transmitted to the die-changing synchronizer 33 through the first sun gear 311. The die-changing synchronizer 33, as the output end of the ECVT transmission 3, transmits the power to the front wheels 16 of the vehicle through the front-wheel clutch 4 to drive the front wheels 16 to rotate, realizing the decoupled four-wheel drive of the vehicle in the pure electric state.

[0046] ECVT power split - front-wheel drive mode: The C0 clutch 2 is switched to the engaged state, the die-changing synchronizer 33 of the ECVT transmission 3 is switched to the open state, the front-wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the open state, the P2 motor 32 is in the power generation state, the P4 motor 6 does not work, and the engine 1 works.

[0047] Among them, the C0 clutch 2 is in the engaged state, the engine 1 is drivingly connected to the ECVT transmission 3 through the C0 clutch 2, the coupler 5 is in the open state, the driving connection between the ECVT transmission 3 and the rear wheels 17 of the vehicle is disconnected, the die-changing synchronizer 33 is in the open state, the driving connection between the die-changing synchronizer 33 and the first sun gear 311 is disconnected, the first sun gear 311 and the first ring gear 314 are unlocked and can move relative to each other. The power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. Part of the power transmitted to the first planet gear 312 can be transmitted to the P2 motor 32 through the first sun gear 311 to drive the P2 motor 32 to generate electricity, so that the P2 motor charges the battery of the vehicle. Another part of the power transmitted to the first planet gear 312 can be transmitted to the die-changing synchronizer 33 through the first ring gear 314. The die-changing synchronizer 33 can, as the output end of the ECVT transmission 3, transmit the power to the front wheels 16 of the vehicle through the front-wheel clutch 4 to drive the front wheels 16 to rotate, realizing the ECVT power split - front-wheel drive mode of the vehicle. That is to say, part of the power output by the engine 1 is used to drive the P2 motor to generate electricity, and the other part is used to drive the front wheels 16 to rotate.

[0048] ECVT power split - rear-wheel drive mode: The C0 clutch 2 is switched to the engaged state, the die-changing synchronizer 33 of the ECVT transmission 3 is switched to the open state, the front-wheel clutch 4 is switched to the open state, the coupler 5 is switched to the engaged state, the P2 motor 32 is in the power generation state, the P4 motor 6 does not work, and the engine 1 works.

[0049] Among them, the coupler 5 is in the engaged state, the ECVT transmission 3 is drivingly connected to the rear wheels 17, the die-changing synchronizer 33 is in the open state, the driving connection between the die-changing synchronizer 33 and the first sun gear 311 is disconnected, the first sun gear 311 and the first ring gear 314 are unlocked and can move relative to each other. The power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. Part of the power transmitted to the first planet gear 312 can be transmitted to the P2 motor 32 through the first sun gear 311 to drive the P2 motor 32 to generate electricity, so that the P2 motor charges the battery of the vehicle. Another part of the power transmitted to the first planet gear 312 can be transmitted to the die-changing synchronizer 33 through the first ring gear 314. The die-changing synchronizer 33, as the output end of the ECVT transmission 3, can transmit the power to the rear wheels 17 of the vehicle through the coupler 5 to drive the rear wheels 17 to rotate, thus realizing the ECVT power split - rear-wheel drive mode of the vehicle. That is to say, part of the power output by the engine 1 is used to drive the P2 motor to generate electricity, and the other part is used to drive the rear wheels 17 to rotate.

[0050] ECVT Power Split - Four - Wheel Drive Mode: The C0 clutch 2 is switched to the engaged state, the mode - changing synchronizer 33 of the ECVT transmission 3 is switched to the open state, the front - wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the engaged state, the P2 motor 32 is in the power - generating state, the P4 motor 6 does not work, and the engine 1 works.

[0051] Among them, the power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. A part of the power transmitted to the first planet gear 312 can be transmitted to the P2 motor 32 through the first sun gear 311 to drive the P2 motor 32 to generate electricity, so that the P2 motor charges the vehicle's battery. Another part of the power transmitted to the first planet gear 312 can be transmitted to the mode - changing synchronizer 33 through the first ring gear 314. A part of the power transmitted to the mode - changing synchronizer 33 is transmitted to the vehicle's front wheels 16 through the front - wheel clutch 4 to drive the front wheels 16 to rotate. Another part of the power transmitted to the mode - changing synchronizer 33 is transmitted to the vehicle's rear wheels 17 through the coupler 5 to drive the rear wheels 17 to rotate, thus realizing the ECVT power split - four - wheel drive mode of the vehicle. That is to say, a part of the power output by the engine 1 drives the P2 motor to generate electricity, and the other part is used to drive the front wheels 16 and the rear wheels 17 to rotate, realizing charging and non - decoupled four - wheel drive of the vehicle in the fuel state.

[0052] Series Mode: The C0 clutch 2 is switched to the engaged state, the mode - changing synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front - wheel clutch 4 is switched to the open state, the coupler 5 is switched to the open state, the engine 1 works, the P2 motor 32 does not work, and the P4 motor 6 works.

[0053] Among them, with the front - wheel clutch 4 in the open state and the coupler 5 in the open state, the transmission connection between the ECVT transmission 3 and the front wheels 16 is disconnected, and the transmission connection between the ECVT transmission 3 and the rear wheels 17 is disconnected. The power output by the engine 1 can be transmitted to the ECVT transmission 3 through the C0 clutch 2, and then the power is transmitted to the P2 motor 32 to drive the P2 motor 32 to generate electricity, so that the P2 motor charges the vehicle's battery. The battery can supply power to the P4 motor 6 to make the motor work, thus realizing the series mode of the vehicle. That is to say, the power output by the engine 1 is used to charge the vehicle's battery, and the battery supplies power to the P4 motor 6 to drive the rear wheels 17 to rotate through the P4 motor 6.

[0054] Parked power generation mode: The C0 clutch 2 is switched to the engaged state, the mode-changing synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front-wheel clutch 4 is switched to the open state, the coupler 5 is switched to the open state, the P2 motor 32 is in the power generation state, the P4 motor 6 does not work, the engine 1 works, and the vehicle stops.

[0055] Among them, the front-wheel clutch 4 is in the open state and the coupler 5 is in the open state. The power transmission connection between the ECVT transmission 3 and the front wheels 16 is disconnected, and the power transmission connection between the ECVT transmission 3 and the rear wheels 17 is disconnected. The power output by the engine 1 can be transmitted to the ECVT transmission 3 through the C0 clutch 2, and then all the power is transmitted to the P2 motor 32 to drive the P2 motor 32 to generate electricity, so that the P2 motor charges the vehicle's battery. That is to say, all the power output by the engine 1 is transmitted to the P2 motor 32 to charge the vehicle's battery.

[0056] Regenerative braking energy recovery mode: During vehicle braking, regenerative braking energy recovery can be achieved through the P4 motor 6.

[0057] Engine 1 direct drive - front-wheel drive mode: The C0 clutch 2 is switched to the engaged state, the mode-changing synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front-wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the open state, and both the P2 motor 32 and the P4 motor 6 do not work, and the engine 1 works.

[0058] Among them, the mode-changing synchronizer 33 is in the engaged state, the first sun gear 311 and the first ring gear 314 are locked. The power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. The power transmitted to the first planet gear 312 is transmitted to the mode-changing synchronizer 33 through the locked first sun gear 311 and the first ring gear 314. The mode-changing synchronizer 33, as the output end of the ECVT transmission 3, can transmit the power to the front wheels 16 of the vehicle through the front-wheel clutch 4 to drive the front wheels 16 to rotate, thus realizing the engine 1 direct drive - front-wheel drive mode. That is to say, all the power output by the engine 1 is used to drive the front wheels 16 to rotate.

[0059] Engine 1 direct drive - rear-wheel drive mode: The C0 clutch is switched to the engaged state, the mode-changing synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front-wheel clutch 4 is switched to the open state, the coupler 5 is switched to the engaged state, and both the P2 motor 32 and the P4 motor 6 do not work, and the engine 1 works.

[0060] Among them, the die change synchronizer 33 is in the engaged state, the first sun gear 311 and the first ring gear 314 are locked, the power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. The power transmitted to the first planet gear 312 is transmitted to the die change synchronizer 33 through the locked first sun gear 311 and the first ring gear 314. The die change synchronizer 33, as the output end of the ECVT transmission 3, can transmit the power to the rear wheels 17 of the vehicle through the coupler 5 to drive the rear wheels 17 to rotate, so as to realize the direct drive - rear drive mode of the engine 1, that is to say, all the power output by the engine 1 is used to drive the rear wheels 17 to rotate.

[0061] Direct drive - four-wheel drive mode of the engine 1: The C0 clutch is switched to the engaged state, the die change synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the engaged state, and both the P2 motor 32 and the P4 motor 6 do not work, and the engine 1 works.

[0062] Among them, the die change synchronizer 33 is in the engaged state, the first sun gear 311 and the first ring gear 314 are locked, the power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. The power transmitted to the first planet gear 312 is transmitted to the die change synchronizer 33 through the locked first sun gear 311 and the first ring gear 314. The die change synchronizer 33, as the output end of the ECVT transmission 3, the front wheel clutch 4 can transmit a part of the power output by the die change synchronizer 33 to the front wheels 16 of the vehicle to drive the front wheels 16 to rotate, and the coupler 5 can transmit another part of the power output by the die change synchronizer 33 to the rear wheels 17 of the vehicle to drive the rear wheels 17 to rotate, so as to realize the direct drive - four-wheel drive mode of the engine 1, that is to say, a part of the power output by the engine 1 is used to drive the front wheels 16 to rotate, and another part is used to drive the rear wheels 17 to rotate, realizing non-decoupled four-wheel drive of the vehicle in the fuel state.

[0063] Parallel - four-wheel drive mode of the engine 1 + P2 motor 32: The C0 clutch 2 is switched to the engaged state, the die change synchronizer 33 of the ECVT transmission 3 is switched to the engaged state, the front wheel clutch 4 is switched to the engaged state, the coupler 5 is switched to the engaged state, the engine 1 and the P2 motor 32 work, and the P4 motor 6 does not work.

[0064] Among them, the die change synchronizer 33 is in an engaged state, the first sun gear 311 and the first ring gear 314 are locked, and the power output by the engine 1 can be transmitted to the first planet carrier 313 of the ECVT transmission 3 through the C0 clutch 2, and then transmitted from the first planet carrier 313 to the first planet gear 312 of the ECVT transmission 3. The power transmitted to the first planet gear 312 is transmitted to the die change synchronizer 33 through the locked first sun gear 311 and the first ring gear 314. At the same time, the power output by the P2 motor 32 is also transmitted to the first sun gear 311 and transmitted to the die change synchronizer 33 through the locked first sun gear 311 and the first ring gear 314. That is to say, the ECVT transmission 3 couples the power output by the engine 1 and the P2 motor 32. The die change synchronizer 33 serves as the output end of the ECVT transmission 3. The front wheel clutch 4 can transmit a part of the power output by the die change synchronizer 33 to the front wheels 16 of the vehicle to drive the front wheels 16 to rotate, and the coupler 5 can transmit another part of the power output by the die change synchronizer 33 to the rear wheels 17 of the vehicle to drive the rear wheels 17 to rotate, thereby realizing the engine 1 + P2 motor 32 parallel four-wheel drive mode. That is to say, after the power output by the engine 1 and the power output by the P2 motor 32 are coupled in the ECVT transmission 3, a part of the power is used to drive the front wheels 16 to rotate, and another part of the power is used to drive the rear wheels 17 to rotate to realize non-decoupled four-wheel drive of the vehicle in the hybrid state.

[0065] According to the power assembly 100 of the embodiment of the present invention, by switching the working states of the C0 clutch 2, the die change synchronizer 33 of the ECVT transmission 3, the front wheel clutch 4, the coupler 5, the P2 motor 32, the P4 motor 6 and the engine 1 of the ECVT transmission 3, various working modes of the vehicle can be switched, so as to facilitate the vehicle to adapt to different driving environments and requirements, which is beneficial to improving the driving performance and fuel economy of the vehicle.

[0066] In some embodiments of the present invention, referring to Figure 1 As shown, at least part of the first planetary gear mechanism 31 is arranged inside the P2 motor 32, which is beneficial to improving the integration degree of the ECVT transmission 3, and the first planetary gear mechanism 31 can make full use of the space inside the P2 motor 32, which is beneficial to reducing the volume of the ECVT transmission 3, so as to reduce the occupied space of the ECVT transmission 3 in the vehicle and facilitate the layout of the ECVT transmission 3 in the vehicle.

[0067] In some embodiments of the present invention, referring to Figure 1As shown, the powertrain 100 further includes a main transmission 7. The main transmission 7 is drivingly connected between the die-changing synchronizer 33 and the front-wheel clutch 4. The main transmission 7 can be an AT transmission (automatic transmission), a DCT transmission (Dual Clutch Transmission), a parallel-shaft transmission, etc. The main transmission 7 can achieve the effect of reducing speed and increasing torque to increase the torque transmitted from the die-changing synchronizer 33 to the front-wheel clutch 4 and the coupling 5.

[0068] In some embodiments of the present invention, referring to Figure 1 As shown, the powertrain 100 further includes an auxiliary transmission 8. The auxiliary transmission 8 is drivingly connected between the main transmission 7 and the front-wheel clutch 4. The auxiliary transmission 8 can further reduce speed and increase torque to increase the torque transmitted from the main transmission 7 to the front-wheel clutch 4.

[0069] In some embodiments of the present invention, referring to Figure 1 and Figure 3 As shown, the auxiliary transmission 8 includes a housing 81 and a second planetary gear mechanism 82 and a shift synchronizer 83 disposed within the housing 81. The second planetary gear mechanism 82 includes a second sun gear 821, second planet gears 822, a second planet carrier 823, and a second ring gear 824. The second sun gear 821 is drivingly connected to the main transmission 7. The second ring gear 824 is fixedly connected to the housing 81. Both the front-wheel clutch 4 and the coupling 5 are drivingly connected to the shift synchronizer 83. The shift synchronizer 83 is selectively drivingly connected to the second sun gear 821 and the second planet carrier 823 connected to the second planet gears 822, enabling the switching between two gears, high gear and low gear, of the auxiliary transmission 8 to change the transmission ratio of the auxiliary transmission 8.

[0070] It can be understood that when the shift synchronizer 83 is drivingly connected to the second sun gear 821, after the power is transmitted from the main transmission 7 to the second sun gear 821, the power can be directly transmitted from the second sun gear 821 to the shift synchronizer 83, and at this time, the auxiliary transmission 8 is in the high gear. When the shift synchronizer 83 is drivingly connected to the second planet carrier 823 connected to the second planet gears 822, after the power is transmitted from the main transmission 7 to the second sun gear 821, the power can be transmitted from the second sun gear 821 to the second planet gears 822, and the power transmitted to the second planet gears 822 can be transmitted from the second planet carrier 823 to the shift synchronizer 83. That is to say, after the power is transmitted from the main transmission 7 to the second sun gear 821, it is indirectly transmitted to the shift synchronizer 83 through the second planet gears 822. The second planet gears 822 can play the role of reducing speed and increasing torque, and at this time, the auxiliary transmission 8 is in the low gear.

[0071] By switching the gear of the auxiliary transmission 8, the following off-road modes of the vehicle can be achieved:

[0072] Conventional off-road: The vehicle is in the engine 1 direct drive - four-wheel drive mode, and the auxiliary transmission 8 is switched to the high gear.

[0073] Medium off-road: The vehicle is in the engine 1 direct drive - four-wheel drive mode, and the auxiliary transmission 8 is switched to the low gear.

[0074] Severe off-road: The vehicle is in the engine 1 + P2 motor 32 parallel - four-wheel drive mode, and the auxiliary transmission 8 is switched to the high gear.

[0075] Extreme off-road: The vehicle is in the engine 1 + P2 motor 32 parallel - four-wheel drive mode, and the auxiliary transmission 8 is switched to the low gear.

[0076] In some embodiments of the present utility model, referring to Figure 1 as shown, the powertrain 100 further includes a front drive shaft 9 and a front axle 10. The front axle 10 is adapted to be drivingly connected to the front wheels 16. The front drive shaft 9 is drivingly connected between the front axle 10 and the front wheel clutch 4. When the front wheel clutch 4 is in the engaged state, the front wheel clutch 4 can be drivingly connected to the front axle 10 through the front drive shaft 9. The front axle 10 is adapted to distribute the power from the front drive shaft 9 to the two front wheels 16 on the left and right of the vehicle, so that the vehicle can drive and steer.

[0077] In some embodiments of the present utility model, referring to Figure 1 as shown, the front wheel clutch 4 is disposed in the housing 81, and the front wheel clutch 4 is drivingly connected to the front drive shaft 9 through a transmission chain 11 in the housing 81.

[0078] It can be understood that the front wheel clutch 4 being disposed in the housing 81 is beneficial to improving the integration degree of the auxiliary transmission 8, and the front wheel clutch 4 can make full use of the space inside the housing 81 for the layout of the front wheel clutch 4 in the vehicle. In addition, the housing 81 can effectively isolate the external environment to protect the transmission chain 11, which is beneficial to reducing the risk of the transmission chain 11 getting stuck.

[0079] In addition, referring to Figure 1 as shown, in the front-rear direction of the vehicle, the engine 1, the C0 clutch 2, the ECVT transmission 3, and the front wheel clutch 4 can be coaxially arranged. In the left-right direction of the vehicle, the front drive shaft 9 can be staggeredly arranged with the front wheel clutch 4 to avoid interference and control the chassis height of the vehicle. The transmission chain 11 can achieve effective transmission between the staggeredly arranged front wheel clutch 4 and the front drive shaft 9, and the cost is relatively low.

[0080] In some embodiments of the present utility model, referring to Figure 1As shown, the powertrain 100 further includes a rear transmission 12. The P4 motor 6 is adapted to be drivingly connected to the rear wheels 17 through the rear transmission 12. The rear transmission 12 can play a role in reducing speed and increasing torque to increase the torque transmitted from the P4 motor 6 to the rear wheels 17, so as to facilitate the P4 motor 6 to drive the rear wheels 17 to rotate. Among them, the P4 motor 6 and the rear transmission 12 can jointly form a P4 electric bridge 15, and the P4 electric bridge 15 can be a single-speed or two-speed electric bridge.

[0081] In some embodiments of the present invention, referring to Figure 1 As shown, the powertrain 100 further includes a rear drive shaft 13 and a rear axle 14. The rear axle 14 is adapted to be drivingly connected to the rear wheels 17. The rear drive shaft 13 is connected between the rear axle 14 and the auxiliary transmission 8. The coupler 5 is arranged in the rear axle 14, which is beneficial to improving the integration degree of the powertrain 100. And when the coupler 5 is in the engaged state, the auxiliary transmission 8 can be drivingly connected to the rear axle 14 through the rear drive shaft 13. The rear axle 14 is adapted to distribute the power from the rear drive shaft 13 to the two rear wheels 17 on the left and right of the vehicle, so that the vehicle can drive and steer. When the coupler 5 is in the open state, the driving connection between the rear drive shaft 13 and the rear axle 14 is disconnected, which can reduce the friction and mechanical losses in the powertrain 100, thereby reducing losses and improving efficiency.

[0082] In some embodiments of the present invention, the powertrain 100 further includes a controller. The controller is communicatively connected to the engine 1, the C0 clutch 2, the ECVT transmission 3, the front-wheel clutch 4, the coupler 5 and the P4 motor 6 respectively. The controller can send control signals to the engine 1, the C0 clutch 2, the ECVT transmission 3, the front-wheel clutch 4, the coupler 5 and the P4 motor 6 respectively according to the driving environment of the vehicle, so as to automatically switch the working states of the engine 1, the C0 clutch 2, the ECVT transmission 3, the front-wheel clutch 4, the coupler 5 and the P4 motor 6, thereby realizing the automatic switching of the working modes of the vehicle, which is beneficial to the vehicle to maintain the best operating state in various environments.

[0083] The powertrain 100 according to the embodiment of the present invention integrates the ECVT transmission 3, the main transmission 7, the auxiliary transmission 8, the drive shaft, the front axle 10 and the P4 electric bridge 15, and can realize the switching between the non-decoupled four-wheel drive system and the decoupled four-wheel drive system of the vehicle. The powertrain 100 has certain fuel economy and excellent off-road capabilities, can realize a hardcore off-road powertrain, and has various switching modes.

[0084] A vehicle according to another embodiment of the present invention includes the above-mentioned powertrain 100.

[0085] For a vehicle according to an embodiment of the present utility model, by switching the operating states of the C0 clutch 2, the shift synchronizer 33 of the ECVT transmission 3, the front-wheel clutch 4, the coupler 5, the P2 motor 32 of the ECVT transmission 3, the P4 motor 6, and the engine 1, multiple operating modes of the vehicle can be switched, so as to facilitate the vehicle to adapt to different driving environments and requirements, and is beneficial to improving the driving performance and fuel economy of the vehicle.

[0086] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0087] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A powertrain, characterized in that: include: An engine (1), a C0 clutch (2), an ECVT transmission (3) and a front wheel clutch (4), wherein the ECVT transmission (3) is selectively connected to the engine (1) through the C0 clutch (2), and the ECVT transmission (3) is suitable for selectively connecting to the front wheels (16) of the vehicle through the front wheel clutch (4); A coupler (5), the ECVT transmission (3) being adapted to be selectively transmission-connected to the rear wheels (17) of the vehicle via the coupler (5); A P4 motor (6), wherein the P4 motor (6) is adapted to be drivingly connected to the rear wheel (17); The ECVT transmission (3) comprises: a first planetary gear mechanism (31), a P2 motor (32) and a mold-shifting synchronizer (33); the first planetary gear mechanism (31) comprises: a first sun gear (311), a first planetary gear (312), a first planetary carrier (313) and a first ring gear (314); the first sun gear (311) is transmission-connected to the P2 motor (32); the first planetary gear (312) is transmission-connected to the C0 clutch (2) via the first planetary carrier (313); the mold-shifting synchronizer (33) is the output end of the ECVT transmission (3); the mold-shifting synchronizer (33) is transmission-connected to the first ring gear (314); and the mold-shifting synchronizer (33) is also selectively combined with the first sun gear (311).

2. The powertrain according to claim 1, characterized in that: At least a portion of the first planetary gear mechanism (31) is disposed inside the P2 motor (32).

3. The powertrain according to claim 1, characterized in that: The power assembly further comprises: a main transmission (7), wherein the main transmission (7) is drivingly connected between the mode-changing synchronizer (33) and the front wheel clutch (4).

4. The powertrain according to claim 3, characterized in that: The power assembly further comprises: an auxiliary transmission (8), wherein the auxiliary transmission (8) is transmission-connected between the main transmission (7) and the front wheel clutch (4).

5. The powertrain according to claim 4, characterized in that: The auxiliary transmission (8) comprises: a housing (81) and a second planetary gear mechanism (82) and a shift synchronizer (83) arranged in the housing (81); the second planetary gear mechanism (82) comprises: a second sun gear (821), a second planetary gear (822), a second planet carrier (823) and a second ring gear (824); the second sun gear (821) is transmission-connected to the main transmission (7); the second ring gear (824) is fixedly connected to the housing (81); the front wheel clutch (4) and the coupler (5) are both transmission-connected to the shift synchronizer (83); the shift synchronizer (83) is selectively transmission-connected to the second sun gear (821) and the second planet carrier (823) connected to the second planetary gear (822).

6. The powertrain according to claim 5, characterized in that: The power assembly further comprises: a front transmission shaft (9) and a front axle (10), wherein the front axle (10) is adapted to be drivingly connected to the front wheel (16), and the front transmission shaft (9) is drivingly connected between the front axle (10) and the front wheel clutch (4).

7. The powertrain according to claim 6, characterized in that: The front wheel clutch (4) is arranged in the housing (81), and the front wheel clutch (4) is transmission-connected to the front transmission shaft (9) in the housing (81) via a transmission chain (11).

8. The powertrain according to claim 1, characterized in that: The power assembly further comprises: a rear transmission (12), and the P4 motor (6) is adapted to be transmission-connected to the rear wheel (17) via the rear transmission (12).

9. The power assembly according to any one of claims 1 to 8, characterized in that: The powertrain also includes: a controller, which is communicatively connected to the engine (1), the C0 clutch (2), the ECVT transmission (3), the front wheel clutch (4), the coupler (5) and the P4 motor (6).

10. A vehicle, characterized in that: Comprising a powertrain according to any one of claims 1-9.

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