CN221233472U - Power transmission system and vehicle - Google Patents

Abstract

The utility model discloses a power transmission system and a vehicle, wherein the power transmission system comprises: a first wheel and a second wheel, the first wheel being connected with a first axle, the second wheel being connected with a second axle; a main clutch for selectively connecting the first axle and the second axle; a first motor arranged to be selectively in power connection with the first axle and a second motor arranged to be selectively in power connection with the second axle; and the range extender is selectively and dynamically connected with the first motor. According to the power transmission system, the connection states of the main clutch and the first wheel shaft and the second wheel shaft are switched, so that simultaneous driving and independent driving of the two wheels can be realized, the escaping capability is improved, the setting of a generator can be reduced, and the main clutch is used, so that the vehicle has better running smoothness and comfort.

Description

Power transmission system and vehicle

Technical Field

The utility model relates to the technical field of vehicle manufacturing, in particular to a power transmission system and a vehicle with the power transmission system.

Background

With the continuous penetration of new energy technologies, more and more vehicle enterprises have own new energy routes, in off-road vehicles, traditional ICE (internal combustion engine) power causes higher oil consumption due to a large-displacement engine, future oil consumption regulations are difficult to meet, and each vehicle enterprise is exploring new energy technology routes of the off-road vehicles. In the related art, an independent motor is matched with a range extender to be used for realizing power generation, the motor is more in number, higher in setting cost and lower in escaping capability, the motor cannot adapt to relatively complex road conditions, and there is room for improvement.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a power transmission system which can realize independent driving or simultaneous driving of two wheels by switching the states of the main clutch, can realize power generation of the first motor, enables each wheel to independently drive and rotate, improves the escaping capability, and can utilize one motor as a range-extending motor, thereby being beneficial to reducing the setting cost.

A drivetrain according to an embodiment of the present utility model includes: a first wheel and a second wheel, the first wheel being connected with a first axle, the second wheel being connected with a second axle; a main clutch for selectively connecting the first axle and the second axle; a first motor arranged to be selectively in power connection with the first axle and a second motor arranged to be selectively in power connection with the second axle; and the range extender is selectively and dynamically connected with the first motor.

According to the power transmission system provided by the embodiment of the utility model, the connection states of the main clutch and the first wheel shaft and the second wheel shaft are switched, so that the simultaneous driving and the independent driving of the two wheels can be realized, and each wheel is driven to independently rotate, thereby being beneficial to improving the escaping capability of the whole vehicle, reducing the setting of an independent generator, ensuring the effective driving of each wheel when the first motor generates electricity, ensuring the dynamic property of the vehicle in the electricity generation process, and ensuring the use of the main clutch, so that the vehicle has better running smoothness and comfort.

According to some embodiments of the present utility model, the first axle includes a first half axle and a first connecting shaft, the first half axle is connected with the first wheel, the first connecting shaft is selectively and dynamically connected with the first motor, and the first half axle and the first connecting shaft are selectively connected through a first clutch;

The second axle comprises a second half axle and a second connecting shaft, the second half axle is connected with the second wheel, the second connecting shaft is in power connection with the second motor, and the second half axle is selectively connected with the second connecting shaft through a second clutch;

Wherein the first connecting shaft and the second connecting shaft are selectively and dynamically connected through the main clutch.

A powertrain system according to some embodiments of the present utility model further includes a first input gear, a second input gear, and a third clutch for selectively powerfully connecting the first input gear with the second input gear;

The first connecting shaft is provided with a first output gear meshed with the second input gear, and the first motor is provided with a first motor gear meshed with the first input gear;

And/or, the motor further comprises a third input gear and a fourth input gear which are coaxially arranged, the second connecting shaft is provided with a second output gear meshed with the third input gear, and the second motor is provided with a second motor gear meshed with the fourth input gear.

The power transmission system according to some embodiments of the present utility model further includes a range extender Cheng Chilun, the first motor is connected with a first motor gear, the first motor gear is meshed with the range extender Cheng Chilun, and a fourth clutch is disposed between the range extender and the range extender.

According to some embodiments of the utility model, the axis of the first axle coincides with the axis of the second axle, and the first motor and the second motor are located on the front and rear sides of the first axle, respectively.

A drivetrain according to some embodiments of the present utility model, further comprising: the wheel comprises a third wheel, a fourth wheel, a third motor and a fourth motor, wherein the third motor is in power connection with the third wheel, and the fourth motor is in power connection with the fourth wheel.

According to some embodiments of the present utility model, the third wheel is connected to a third wheel axle, the third wheel axle is provided with a third output gear, the third motor is provided with a third motor gear, and the third motor gear is in power connection with the third output gear through a gear set;

The fourth wheel is connected with a fourth wheel shaft, a fourth output gear is arranged on the fourth wheel shaft, a fourth motor is provided with a fourth motor gear, and the fourth motor gear is in power connection with the fourth output gear through a gear set.

According to some embodiments of the utility model, the first and second wheels are each provided as front wheels, and the third and fourth wheels are each provided as rear wheels;

And/or, the third motor and the fourth motor are both positioned behind the rear wheel axle.

According to some embodiments of the utility model, the range extender and the first motor are both located in front of the front axle, and the second motor is located between the front axle and the rear axle.

The utility model further provides a vehicle.

According to an embodiment of the utility model, a vehicle is provided with a drivetrain according to any one of the embodiments described above.

The advantages of the vehicle and the above-described driveline over the prior art are the same and are not described in detail herein.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a power transmission system according to an embodiment of the present utility model.

Reference numerals:

The power train system 100 is configured such that,

The first wheel 11, the second wheel 12, the third wheel 13, the fourth wheel 14,

A first motor 21, a first motor gear 211, a second motor 22, a second motor gear 221, a third motor 23, a third motor gear 231, a fourth motor 24, a fourth motor gear 241, a range extender 25, a range extender Cheng Chilun 251,

A first axle 31, a first output gear 311, a first half shaft 312, a first connecting shaft 313, a second axle 32, a second output gear 321, a second half shaft 322, a second connecting shaft 323, a third axle 33, a third output gear 331, a fifth transmission gear 332, a sixth transmission gear 333, a fourth axle 34, a fourth output gear 341, a seventh transmission gear 342, an eighth transmission gear 343, a first input gear 351, a second input gear 352, a third input gear 353, a fourth input gear 354,

A main clutch 41, a first clutch 42, a second clutch 43, a third clutch 44, and a fourth clutch 45.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

If not specified, the front-rear direction in the application is the longitudinal direction of the vehicle, namely the X direction; the left-right direction is the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

The following describes a drivetrain 100 according to an embodiment of the present utility model with reference to fig. 1, by providing the drivetrain 100, wheels of a vehicle can be driven independently, so that each wheel has independent escaping capability, and at the same time, a motor corresponding to one of the wheels can be used as a range extender motor to be matched with the range extender 25, and a separate generator is not required to be provided for being matched with the range extender 25, thereby reducing the number of motors and reducing the setting cost.

As shown in fig. 1, a power transmission system 100 according to an embodiment of the present utility model includes: first wheel 11, second wheel 12, main clutch 41, first motor 21, second motor 22, and range extender 25.

The first wheel 11 and the second wheel 12 are two wheels of the vehicle, in other words, the power transmission system 100 of the present embodiment is applicable to a four-wheel vehicle type or a three-wheel vehicle type, in the present embodiment, the application is exemplified by a four-wheel vehicle type, that is, one of the first wheel 11 and the second wheel 12 is a front left wheel, one of the second wheel is a front right wheel, or one of the first wheel and the second wheel is a rear left wheel, and one of the second wheel is a rear right wheel, that is, the first wheel 11 and the second wheel 12 can be flexibly paired with the front left wheel and the front right wheel or with the rear left wheel and the rear right wheel in practical design, that is, the first wheel 11 is not limited to the front left wheel, but can be other wheels, and other wheels are similar and are flexibly selectable.

The first wheel 11 is connected with the first wheel axle 31, the second wheel 12 is connected with the second wheel axle 32, and the main clutch 41 is used for selectively connecting the first wheel axle 31 and the second wheel axle 32, for example, the main clutch 41 is connected between the first wheel axle 31 and the second wheel axle 32, that is, the connection state between the first wheel axle 31 and the second wheel axle 32 is flexibly switched by switching the state of the main clutch 41. In other words, the driving force can be selectively transmitted between the first wheel axle 31 and the second wheel axle 32 through the main clutch 41, when the main clutch 41 is in power combination with the first wheel axle 31 and the second wheel axle 32, the power of the first wheel axle 31 is transmitted to the second wheel axle 32, the simultaneous driving of the first wheel 11 and the second wheel 12 is realized, and when one or two of the main clutch 41 and the first wheel axle 31 and the second wheel axle 32 are disconnected, the power between the first wheel axle 31 and the second wheel axle 32 is disconnected, so that the independent driving of the first wheel 11 and the second wheel 12 can be performed, thereby, by providing the main clutch 41, the power states of the first wheel 11 and the second wheel 12 can be flexibly selected, and the power switching in different modes is realized.

And when specifically designed, the first wheel axle 31 and the second wheel axle 32 may be simultaneously provided as front side wheel axles, or may be simultaneously provided as rear side wheel axles, for example, one of the first wheel axle 31 and the second wheel axle 32 is provided as a left front wheel axle, and the other is provided as a right front wheel axle, and the main clutch 41 is provided between the left front wheel axle and the right front wheel axle, so that when the power of the first motor 21 or the second motor 22 is transmitted to the main clutch 41, the power may be output from the main clutch 41 to the first wheel 11 or the second wheel 12, respectively.

The range extender 25 is selectively in power connection with the first motor 21, that is, the range extender 25 may be selectively in power connection with or disconnected from the first motor 21. It should be noted that, the range extender 25 may be an engine, and when the engine is in power connection with the first motor 21, the engine may drive the first motor 21 to generate power, so that the first motor 21 in this embodiment may be used to cooperate with the range extender 25 to generate power actively, or may be used to drive the first wheel 11 alone or to drive the first wheel 11 and the second wheel 12 simultaneously to rotate, so as to implement a multi-purpose arrangement.

It should be noted that, the first motor 21 and the second motor 22 may both drive the first wheel 11 and the second wheel 12 by power, that is, the first wheel 11 and the second wheel 12 may be two wheels facing each other in the lateral direction, for example, the first wheel 11 and the second wheel 12 may be two front wheels, or the first wheel 11 and the second wheel 12 may be two rear wheels, so as to facilitate the path arrangement and power transmission from the first motor 21 and the second motor 22 to the wheels.

Therefore, the first wheel 11 and the second wheel 12 in the embodiment can be driven by separate motors, the two rear wheels can be driven to rotate, a front driving mode is realized, and the two motors can be arranged to drive the two rear wheels respectively, so that the wheels can be driven to rotate separately, the overall escaping capability of the vehicle is improved, the vehicle is suitable for different types of running road conditions, and the power performance of the vehicle is improved; meanwhile, the first motor 21 can be used for driving the first wheel 11 to carry out power driving, and can be used as a generator to carry out power matching with the range extender 25, so that the arrangement of two functions of the same motor is realized, the arrangement of an independent power generator is reduced, the arrangement cost is reduced, and when the first motor 21 is used as a generator to operate, the second motor 22 can simultaneously carry out power driving on the first wheel 11 and the second wheel 12, so that the problem that the first wheel 11 cannot be effectively driven when the first motor 21 is used for power generation can be well avoided, the power state of each wheel is ensured, the first motor 21 is not required to be simultaneously used for generating and driving, the working difficulty of the first motor 21 is reduced, and the reliability of the power transmission system 100 is ensured. And, when the first motor 21 and the range extender 25 actively drive the first wheel 11 at the same time, the dynamic property of the first wheel 11 can be enhanced.

According to the power transmission system 100 of the embodiment of the utility model, by switching the connection states of the main clutch 41 and the first wheel axle 31 and the second wheel axle 32, simultaneous driving and independent driving of two wheels can be realized, and each wheel is driven to independently rotate, so that the escape capability of the whole vehicle is improved, the setting of an independent generator can be reduced, the effective driving of each wheel can be ensured when the first motor 21 generates electricity, the dynamic property of the vehicle in the electricity generation process is ensured, and the main clutch 41 is used, so that the vehicle has better running smoothness and comfort.

In some embodiments, the first axle 31 includes a first half shaft 312 and a first connecting shaft 313, the first half shaft 312 is connected with the first wheel 11, the first connecting shaft 313 is selectively power-connected with the first motor 21, i.e., the first motor 21 is power-engageable with or power-disengageable from the first connecting shaft 313, to enable the first motor 21 to selectively transmit power to the first connecting shaft 313, and the first half shaft 312 and the first connecting shaft 313 are selectively connected by the first clutch 42, i.e., the state of the first clutch 42 is switched, to flexibly switch the connection state between the first half shaft 312 and the first connecting shaft 313.

The first half shaft 312 and the first connecting shaft 313 are coaxially arranged and are in power connection with the first motor 21 through the first clutch 42, the first connecting shaft 313 is in power connection with the first wheel 11, and thus, when the first clutch 42 is in power connection with the first half shaft 312 and the first connecting shaft 313, the driving force of the first motor 21 is transmitted to the first half shaft 312 through the first connecting shaft 313, so that the driving of the first wheel 11 is realized, and when the first connecting shaft 313 is in power disconnection with the first motor 21, or when one or two of the first clutch 42 and the first half shaft 312 and the first connecting shaft 313 are in power disconnection, the power between the first half shaft 312 and the first connecting shaft 313 is disconnected, namely, the power is not transmitted to the first wheel 11.

The second axle 32 includes a second half shaft 322 and a second connecting shaft 323, the second half shaft 322 being connected with the second wheel 12, the second connecting shaft 323 being in power connection with the second motor 22, the second half shaft 322 and the second connecting shaft 323 being selectively connected by the second clutch 43, i.e., the state of the second clutch 43 being switched, to flexibly switch the connection state between the second half shaft 322 and the second connecting shaft 323.

The second half shaft 322 and the second connecting shaft 323 are coaxially arranged, and are in power connection with the second motor 22 through the second clutch 43, the second connecting shaft 323 is in power connection with the second wheel 12, so that when the second clutch 43 is in power connection with the second half shaft 322 and the second connecting shaft 323, the driving force of the second motor 22 is transmitted to the second half shaft 322 through the second connecting shaft 323 to drive the second wheel 12, and when one or two of the second clutch 43 and the second half shaft 322 and the second connecting shaft 323 are in power disconnection, the power between the second half shaft 322 and the second connecting shaft 323 is disconnected, namely, the power is not transmitted to the second wheel 12.

Thus, when both the first clutch 42 and the second clutch 43 are in the power-engaged state, driving of the first motor 21 and the second motor 22 to the first wheel 11 and the second wheel 12, respectively, can be achieved, and when both the first clutch 42 and the second clutch 43 are in the power-off state, the first wheel 11 and the second wheel 12 cannot move, that is, the vehicle is in a stopped state or the vehicle is in a rear drive mode at this time, for power output.

In which the second connection shaft 313 and the second connection shaft 323 are selectively and dynamically connected through the main clutch 41, that is, by switching the state of the main clutch 41, power transmission between the second connection shaft 313 and the second connection shaft 323 can be achieved, as shown in fig. 1, the second connection shaft 313 and the second connection shaft 323 are coaxially disposed, and are dynamically connected through the main clutch 41, in this embodiment, when the main clutch 41 is dynamically combined with the second connection shaft 313 and the second connection shaft 323, a part of the driving force of the second motor 22 is transmitted to the first half shaft 312 through the second connection shaft 313, the main clutch 41, the first clutch 42, and another part is transmitted to the second half shaft 322 through the second clutch 43, and simultaneous driving of the first wheel 11 and the second wheel 42 can be achieved.

Thereby, the power connection between the respective connection shafts is achieved by providing the main clutch 41, the first clutch 42 and the second clutch 43, so that the power transmission is smoother and the comfort of the vehicle is higher.

In some embodiments, the powertrain 100 further includes a first input gear 351, a second input gear 352, and a third clutch 44, the third clutch 44 for selectively connecting the first input gear 351 with the second input gear 352 in a power-selective manner, such as the third clutch 44 being disposed between the first input gear 351 and the second input gear 352, that is, the first electric machine 21 may transfer power to the third clutch 44, and may selectively transfer power from the first input gear 351 to the second input gear 352 by switching states of the third clutch 44.

The second connecting shaft 313 is provided with a first output gear 311 meshed with a second input gear 352, the first motor 21 is provided with a first motor gear 211 meshed with the first input gear 351, so that the first input gear 351 is meshed with the first motor gear 211 for transmission, the second input gear 352 is meshed with the first output gear 311 for transmission, and the first motor 21 can drive the second connecting shaft 313 to drive the first wheel 11.

As shown in fig. 1, the second connecting shaft 313 is sleeved with a first output gear 311, the first output gear 311 is in transmission fit with the second connecting shaft 313 in the circumferential direction, and the first input gear 351, the third clutch 44 and the second input gear 352 are sequentially and coaxially connected, the first motor gear 211 is fixedly sleeved on a motor shaft of the first motor 21, so that when the first motor 21 rotates, the first motor gear 211 can rotate along with the first motor gear, and meanwhile, when the third clutch 44 connects the first input gear 351 with the second input gear 352 in a power mode, the power on the first motor 21 can be transmitted to the second connecting shaft 313 through the first motor gear 211, the first input gear 351, the third clutch 44, the second input gear 352 and the first output gear 311, and then the first wheel 11 is independently driven to rotate.

Thus, the first motor 21 can switch the power output state by the cooperation of the first input gear 351, the second input gear 352, and the third clutch 44, and flexibly select and drive the first wheel 11. It should be noted that, when the third clutch 44 is disconnected from the first input gear 351 and the second input gear 352, the power of the first motor 21 is not output from the third clutch 44, and at this time, the range extender 25 may be in power connection with the first motor 21, so that the range extender 25 is used to drive the first motor 21 to operate and start generating power.

And through setting up the transmission cooperation of first motor gear 211 and first input gear 351, not only can realize the power transmission of first motor 21 to first input shaft 35, and can make first motor 21 and first input shaft 35 distribute in proper order in the longitudinal direction of vehicle to rationally utilize the space of vehicle in the longitudinal direction, avoid the too compact of structural installation in transverse direction.

In some embodiments, the powertrain 100 further includes a third input gear 353 and a fourth input gear 354 coaxially disposed, the second connecting shaft 323 is provided with a second output gear 321 engaged with the third input gear 353, the second motor 22 is provided with a second motor gear 221 engaged with the fourth input gear 354, such that the fourth input gear 354 is in meshed transmission with the second motor gear 211, and the third input gear 353 is in meshed transmission with the second output gear 321, thereby enabling the second motor 22 to drive the second connecting shaft 323 to enable driving of the second wheel 12.

As shown in fig. 1, the second connecting shaft 323 is sleeved with a second output gear 321, the second output gear 321 is in transmission fit with the second connecting shaft 323 in the circumferential direction, and the third input gear 353 and the fourth input gear 354 are coaxially distributed, the second motor gear 221 is fixedly sleeved on a motor shaft of the second motor 22, so that when the second motor 22 rotates, the first motor gear 221 can rotate along with the second motor shaft, and meanwhile, driving force is transmitted to the second connecting shaft 323 through the fourth input gear 354 and the third input gear 353, so as to independently drive the second wheel 12 to rotate.

Thus, by providing power transmission of the fourth input gear 354 and the third input gear 353, it is possible to achieve a change in the speed ratio of the second motor gear 221 to the second output gear 321, achieve adjustment of the power output of the second motor 22, and change the gear steering of the second motor gear 221 to the second output gear 321.

In some embodiments, the power transmission system 100 further includes a speed increaser Cheng Chilun 251, the first motor 21 is connected with a first motor gear 211, the first motor gear 211 is meshed with the speed increaser Cheng Chilun, and therefore, the first motor 21 can be connected with the power of the speed increaser 25 through the meshing transmission of the first motor gear 211 and the speed increaser Cheng Chilun 251, when the speed increaser 25 outputs driving force, the driving force can be transmitted to the first motor gear 211 through the speed increaser Cheng Chilun 251 and then transmitted to the first motor 21 through the first motor gear 211, so that the driving of the first motor 21 is realized, and further, the power generation is realized.

The fourth clutch 45 is disposed between the extender Cheng Chilun and the extender 25, i.e. the state of the fourth clutch 45 can be switched, so as to flexibly switch the connection state between the extender 25 and the extender Cheng Chilun 251. In other words, when the first motor 21 is driven to generate electricity by the range extender 25, the range extender 25 and the range extender Cheng Chilun are in power engagement by the fourth clutch 45, so that the power of the range extender 25 can be output to the range extender Cheng Chilun 251 and further transmitted to the first motor gear 211 and the first motor 21 to realize power generation, and when the first motor 21 is not required to be driven to generate electricity by the range extender 25, the range extender 25 and the range extender Cheng Chilun 251 are separated by the fourth clutch 45, and the power between the two is disconnected.

In some embodiments, the axis of the first axle 31 coincides with the axis of the second axle 32, i.e. the first axle 31 and the second axle 32 are arranged facing each other in the lateral direction of the vehicle, in other words, one of the first axle 31 and the second axle 32 may be arranged as a left front axle, the other may be arranged as a right front axle, or one of the first axle 31 and the second axle 32 may be arranged as a left rear axle, the other may be arranged as a right rear axle, i.e. for enabling driving of the front two wheels, or for enabling driving of the rear two wheels.

And the first motor 21 and the second motor 22 are respectively located at front and rear sides of the first wheel shaft, wherein the first wheel shaft 31 extends in the lateral direction of the vehicle, whereby the first motor 21 may be located at the front side of the first wheel shaft 31 and the second motor 22 may be located at the rear side of the first wheel shaft 31, or the first motor 21 may be located at the rear side of the first wheel shaft 31 and the second motor 22 may be located at the front side of the first wheel shaft 31, and the second motor 22 may also be located at the rear side or the front side of the second wheel shaft 32. Specifically, as shown in fig. 1, the first wheel axle 31 is a left front wheel axle, the second wheel axle 32 is a right front wheel axle, and the first motor 21 is located in front of the first wheel axle 31, and the second motor 22 is located behind the second wheel axle 32, so that the first motor 21 and the second motor 22 can utilize the space in the front-rear direction of the first wheel axle 31, and the space in the left-right direction of the first wheel axle 31 and the second wheel axle 32, respectively, so that the arrangement of the first motor 21 and the second motor 22 is relatively dispersed, and not too compactly installed.

In some embodiments, the powertrain 100 further includes: the third wheel 13, the fourth wheel 14, the third motor 23 and the fourth motor 24, the third wheel 13 and the fourth wheel 14 are respectively two wheels of the vehicle, and can be two rear wheels of the vehicle, namely one is a left rear wheel and one is a right rear wheel, that is, when actually designed, the first wheel 11, the second wheel 12, the third wheel 13 and the fourth wheel 14 can be flexibly matched with a left front vehicle, a right front wheel, a left rear wheel and a right rear wheel for use, namely, the first wheel 11 is not limited to the left front wheel, can be other wheels, and the other wheels are similar and are flexibly and selectively arranged.

The third motor 23 is in power connection with the third wheel 13, namely, the driving force of the third motor 23 is transmitted to the third wheel 13, so that the third wheel 13 is independently driven, the fourth motor 24 is in power connection with the fourth wheel 14, namely, the driving force of the fourth motor 24 is transmitted to the fourth wheel 14, and the fourth wheel 14 is independently driven, therefore, the third motor 23 and the fourth motor 24 are arranged to respectively drive the third wheel 13 and the fourth wheel 14 to rotate, and when the first motor 21 and the second motor 22 respectively drive the first wheel 11 and the second wheel 12, the functions of four wheel torque vector control, in-situ turning and the like can be realized, the vehicle operation stability and the off-road escaping capability are improved, and good maneuverability is achieved.

In some embodiments, the third wheel 13 is connected to a third wheel axle 33, the third wheel axle 33 is provided with a third output gear 331, the third motor 23 is provided with a third motor gear 231, and the third motor gear 231 is in power connection with the third output gear 331 through a gear set. The third motor gear 231 is a motor shaft fixedly sleeved on the third motor 23, so that the driving force output by the third motor 23 can be sequentially output to the third wheel shaft 33 through the third motor gear 231, the gear set and the third output gear 331, and the power output to the third wheel 13 is realized.

Wherein, the gear set between the third motor gear 231 and the third output gear 331 may include a fifth transmission gear 332 and a sixth transmission gear 333, the fifth transmission gear 332 and the sixth transmission gear 333 are coaxially arranged, and the third motor gear 231 is engaged with the fifth transmission gear 332, the third output gear 331 is engaged with the sixth transmission gear 333, and by providing power transmission of the fifth transmission gear 332 and the sixth transmission gear 333, a speed ratio change from the third motor gear 231 to the third output gear 331, an adjustment of power output of the third motor 23, and a gear steering of the third motor gear 231 to the third output gear 331 may be realized.

And, the fourth wheel 14 is connected with a fourth wheel axle 34, the fourth wheel axle 34 is provided with a fourth output gear 341, the fourth motor 24 is provided with a fourth motor gear 241, and the fourth motor gear 241 is in power connection with the fourth output gear 341 through a gear set. The fourth motor gear 241 is fixedly sleeved on the motor shaft of the fourth motor 24, so that the driving force output by the fourth motor 24 can be sequentially output to the fourth wheel shaft 34 through the fourth motor gear 241, the gear set and the fourth output gear 341, so as to realize the power output of the fourth wheel 14.

Wherein, the gear set between the fourth motor gear 241 and the fourth output gear 341 may include a seventh transmission gear 342 and an eighth transmission gear 343, the seventh transmission gear 342 and the eighth transmission gear 343 are coaxially arranged, and the fourth motor gear 241 is engaged with the seventh transmission gear 342, the fourth output gear 341 is engaged with the eighth transmission gear 343, and by providing power transmission of the seventh transmission gear 342 and the eighth transmission gear 343, a speed ratio change of the fourth motor gear 241 to the fourth output gear 341, an adjustment of the power output of the fourth motor 24, and a gear steering of the fourth motor gear 241 to the fourth output gear 341 may be realized.

In some embodiments, the first wheel 11 and the second wheel 12 are each provided as front wheels, the third wheel 13 and the fourth wheel 14 are each provided as rear wheels, the first motor 21 and the second motor 22 may be used to drive the two front wheels to rotate, and the third motor 23 and the fourth motor 24 may be used to drive the two rear wheels to rotate.

Specifically, as shown in fig. 1, the first wheel 11 is a left front wheel, the second wheel 12 is a right front wheel, the third wheel 13 is a right rear wheel, the fourth wheel 14 is a left rear wheel, correspondingly, the first wheel axle 31 is a left front wheel axle, the second wheel axle 32 is a right front wheel axle, the third wheel axle 33 is a right rear wheel axle, and the fourth wheel axle 34 is a left rear wheel axle.

Therefore, the first motor 21 can be used for driving the left front wheel to rotate and can also be used for being matched with the range extender 25 to realize power generation, meanwhile, the second motor 22 can be used for driving the right front wheel to rotate and can also simultaneously drive the left front wheel and the right front wheel to rotate, the third motor 23 is used for driving the right rear wheel to rotate, and the fourth motor 24 is used for driving the left rear wheel to rotate, so that the four wheels can be respectively driven to rotate through the four motors, the structure is simple, and the escape capability of the whole vehicle can be improved.

In some embodiments, the third motor 23 and the fourth motor 24 are located behind the rear axle, that is, the third motor 23 and the fourth motor 24 are located in the rear region of the vehicle, so that not only is the space between the third motor 23 and the third axle 33 reduced, but also the space between the fourth motor 24 and the fourth axle 34 is reduced, and the rear space of the vehicle can be better utilized, it is understood that the longitudinal length of the middle space is greater than the space of the front region and greater than the space of the rear region in the longitudinal direction of the vehicle, and the third motor 23 and the fourth motor 24 are spaced apart from the middle region of the vehicle, so that the central region of the vehicle is prevented from being excessively compact in structure, so that the main components of the powertrain 100 can be more greatly utilized in the longitudinal space of the vehicle, so that the compactness of each part of the vehicle is relatively balanced, and reasonable arrangement of the positions of each component is achieved.

In some embodiments, the range extender 25 and the first motor 21 are both located in front of the front axle, the second motor 22 is located between the front axle and the rear axle, i.e., in this embodiment, the first axle 31 and the second axle 32 are both front axles, the first axle 31 is a left front axle, the second axle 32 is a right front axle, while the third axle 33 and the fourth axle 34 are both rear axles, the third axle 33 is a right rear axle, and the fourth axle 34 is a left rear axle.

Therefore, the range extender 25 and the first motor 21 are both positioned in the front area of the vehicle, which is beneficial to shortening the power transmission path between the first motor 21 and the first wheel axle 31, and simultaneously, the power transmission part between the range extender 25 and the first motor 21 can be reduced, so that the arrangement of effective power generation and driving is realized. Meanwhile, the second motor 22 is located in the middle area of the vehicle, so that a short power path between the second motor 22 and the second wheel axle 32 can be kept, the second motor 22 is not required to be compactly installed in the front area of the vehicle together with the range extender 25 and the first motor 21, the middle space of the vehicle is well utilized, and the crowding of the front area of the vehicle is avoided.

It should be noted that, the present embodiment further includes a braking energy recovery mode to recover the redundant energy during the running of the vehicle for the subsequent running of the vehicle.

The utility model further provides a vehicle.

According to the vehicle of the embodiment of the utility model, the power transmission system 100 of any one of the embodiments described above is provided. In some specific embodiments, as shown in fig. 1, the vehicle is provided with a left front wheel, a right front wheel, a left rear wheel and a right rear wheel, wherein the first motor 21 is in power connection with the range extender 25 through a fourth clutch 45, and the first motor 21 is selectively in power connection with the left front wheel through a third clutch 44 and a first clutch 42, while the second motor 22 is selectively in power connection with the right front wheel through a second clutch 43, and the second motor 22 is also selectively in power connection with the main clutch 41, such that the first motor 21 and the second motor 22 can be used together to drive the two front wheels to rotate, and the second motor 22 can be used to drive the left front wheel and the right front wheel to rotate simultaneously through the main clutch 41, such that the second motor 22 can drive the two front wheels to rotate simultaneously when the first motor 21 is used to generate power in cooperation with the range extender 25. Meanwhile, the range extender 25 can be in power connection with the left front wheel and the right front wheel through the fourth clutch 45, the third clutch 44, the main clutch 41, the first clutch 42 and the second clutch 43, so that the range extender 25 can drive the two front wheels to rotate simultaneously, namely, a direct drive mode of the range extender 25 is realized, meanwhile, the torque of the two front wheels is controlled through the compression degree of the first clutch 42 and the second clutch 43, and the range extender 25 also comprises a parallel drive mode, the range extender 25 can independently drive the first wheel 11 or the first motor 21 and the range extender 25 can jointly drive the first wheel 11 to rotate, and at the moment, the first wheel 11 can obtain larger wheel end torque, and the dynamic property of the vehicle is enhanced.

As shown in fig. 1, the third motor 23 is power-connected with the right rear wheel through a gear set, and the fourth motor 24 is power-connected with the left rear wheel through a gear set, so that two rear wheels can be simultaneously driven by the third motor 23 and the fourth motor 24, thereby realizing independent driving of four wheels.

Therefore, by arranging the power transmission system 100, independent driving of each wheel can be realized, the escaping capability of the whole vehicle is improved, the setting of an independent generator can be reduced, and when the first motor 21 generates electricity, the effective driving of each wheel can be still ensured, and the dynamic property of the vehicle in the electricity generation process is ensured.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A drivetrain, comprising:

a first wheel and a second wheel, the first wheel being connected with a first axle, the second wheel being connected with a second axle;

A main clutch for selectively connecting the first axle and the second axle;

a first motor arranged to be selectively in power connection with the first axle and a second motor arranged to be selectively in power connection with the second axle;

And the range extender is selectively and dynamically connected with the first motor.

2. The drivetrain of claim 1, wherein the first axle comprises a first axle shaft and a first connecting shaft, the first axle shaft being coupled to the first wheel, the first connecting shaft being selectively coupled to the first electric machine, the first axle shaft and the first connecting shaft being selectively coupled by a first clutch;

The second axle comprises a second half axle and a second connecting shaft, the second half axle is connected with the second wheel, the second connecting shaft is in power connection with the second motor, and the second half axle is selectively connected with the second connecting shaft through a second clutch;

Wherein the first connecting shaft and the second connecting shaft are selectively and dynamically connected through the main clutch.

3. The powertrain system of claim 2, further comprising a first input gear, a second input gear, and a third clutch for selectively powerfully connecting the first input gear with the second input gear;

The first connecting shaft is provided with a first output gear meshed with the second input gear, and the first motor is provided with a first motor gear meshed with the first input gear;

And/or, the motor further comprises a third input gear and a fourth input gear which are coaxially arranged, the second connecting shaft is provided with a second output gear meshed with the third input gear, and the second motor is provided with a second motor gear meshed with the fourth input gear.

4. A drivetrain according to any one of claims 1 to 3, further comprising a range extender Cheng Chilun, the first motor being connected to a first motor gear, the first motor gear being in mesh with the range extender Cheng Chilun, and a fourth clutch being provided between the range extender and the range extender.

5. A drivetrain according to any one of claims 1 to 3, wherein the axis of the first axle coincides with the axis of the second axle, and the first and second motors are located on either side of the first axle.

6. A drivetrain according to any one of claims 1-3, further comprising: the wheel comprises a third wheel, a fourth wheel, a third motor and a fourth motor, wherein the third motor is in power connection with the third wheel, and the fourth motor is in power connection with the fourth wheel.

7. The drivetrain of claim 6, wherein the third wheel is coupled to a third axle, the third axle having a third output gear, the third motor having a third motor gear, the third motor gear being in power communication with the third output gear via a gear set;

The fourth wheel is connected with a fourth wheel shaft, a fourth output gear is arranged on the fourth wheel shaft, a fourth motor is provided with a fourth motor gear, and the fourth motor gear is in power connection with the fourth output gear through a gear set.

8. The powertrain system of claim 6, wherein the first and second wheels are each configured as front wheels and the third and fourth wheels are each configured as rear wheels;

And/or, the third motor and the fourth motor are both positioned behind the rear wheel axle.

9. A drivetrain according to any one of claims 1 to 3, wherein the range extender and the first motor are both located forward of the front axle and the second motor is located between the front and rear axles.

10. A vehicle, characterized in that a drivetrain according to any one of claims 1-9 is provided.