CN221233470U - 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; a first motor and a second motor, the first motor being arranged in powered connection with the first wheel or with the first wheel and the second wheel simultaneously, the second motor being arranged in powered connection with the second wheel or with the first wheel and the second wheel simultaneously; and the range extender is selectively and dynamically connected with the first motor. The power transmission system can realize independent driving of the first wheel and the second wheel, is beneficial to improving the escaping capability of the vehicle, can reduce the arrangement of an independent generator, can still ensure effective driving of the two wheels when the first motor generates electricity, ensures the dynamic property of the vehicle in the electricity generation process, can drive the first wheel and the second wheel by the first motor and the second motor, and is beneficial to enhancing the dynamic property of the vehicle in pure electric driving.

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 and high in setting cost, the escaping capability of each wheel is low, the wheel 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 the power transmission system, which not only can drive two wheels respectively through two motors to realize driving and improve the escaping capability, but also can utilize one of the motors 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; a first motor and a second motor, the first motor being arranged in powered connection with the first wheel or with the first wheel and the second wheel simultaneously, the second motor being arranged in powered connection with the second wheel or with the first wheel and the second wheel simultaneously; 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 independent driving of the first wheel and the second wheel can be realized, the escaping capability of the vehicle is improved, the setting of an independent generator can be reduced, the effective driving of the two wheels can be ensured when the first motor generates electricity, the dynamic property of the vehicle in the electricity generation process is ensured, the first motor and the second motor can both drive the first wheel and the second wheel, and the dynamic property of the vehicle in pure electric driving is enhanced.

A drivetrain according to some embodiments of the present utility model further includes a differential, the first wheel having a first axle connected thereto, the second wheel having a second axle connected thereto, the differential being in dynamic connection with the first axle and the second axle, respectively;

Wherein the first motor is selectively in power connection with the first axle and the differential, and the second motor is selectively in power connection with the second axle and the differential.

The power transmission system according to some embodiments of the present utility model further comprises a first input shaft electrically connected to the first motor, the first input shaft being provided with a first transmission gear, a second transmission gear and a first synchronizer for dynamically connecting the first input shaft to the first transmission gear or the second transmission gear;

The first wheel axle is provided with a first output gear meshed with the first transmission gear, and the differential is provided with a differential gear meshed with the second transmission gear.

According to some embodiments of the utility model, the first motor is provided with a first motor gear, the first input shaft is provided with a first input gear, and the first input gear is meshed with the first motor gear.

The power transmission system according to some embodiments of the present utility model further comprises a second input shaft electrically connected to the second motor, the second input shaft being provided with a third transmission gear, a fourth transmission gear and a second synchronizer for dynamically connecting the second input shaft to the third transmission gear or the fourth transmission gear;

The second wheel axle is provided with a second output gear meshed with the third transmission gear, and the differential is provided with a differential gear meshed with the fourth transmission gear.

According to some embodiments of the utility model, the second motor is provided with a second motor gear, the second input shaft is provided with a second input gear, and the second input gear is meshed with the second motor gear.

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 second axle, respectively.

The power transmission system according to some embodiments of the present utility model further comprises 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 clutch is arranged between the range extender and the range extender.

According to some embodiments of the utility model, the first wheel and the second wheel are each provided as a front wheel; the range extender and the first motor are both positioned in front of the front wheel shaft, and the second motor is positioned between the front wheel shaft and the rear wheel shaft.

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 range extender 25, a range extender Cheng Chilun 251,

A first wheel axle 31, a first output gear 311, a second wheel axle 32, a second output gear 321, a third wheel axle 33, a fourth wheel axle 34, a first input shaft 35, a first input gear 351, a first transmission gear 352, a second transmission gear 353, a second input shaft 36, a second input gear 361, a third transmission gear 362, a fourth transmission gear 363,

The first synchronizer 41, the second synchronizer 42, the clutch 43,

Differential 5, differential gear 51.

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, two wheels of a vehicle can be driven independently, so that the two wheels have 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 to be provided 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, 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 motor 21 is disposed in power connection with the first wheel 11 or with the first wheel 11 and the second wheel 12 at the same time, that is, the first motor 21 may be used to drive the first wheel 11 alone or to drive the first wheel 11 and the second wheel 12 at the same time, which is advantageous for increasing the usage of the first motor 21; meanwhile, the second motor 22 is provided in power connection with the second wheel 12 or with both the first wheel 11 and the second wheel 12, i.e., the second motor 22 may be used to drive the second wheel 12 alone or to drive both the first wheel 11 and the second wheel 12 simultaneously. In actual operation, when the first motor 21 drives the first wheel 11 alone, the second motor 22 drives the second wheel 12 alone, so that the first wheel 11 and the second wheel 12 can be driven simultaneously, or when the first motor 21 drives the first wheel 11 and the second wheel 12 simultaneously, the second motor 22 can also drive the first wheel 11 and the second wheel 12 simultaneously, so that the power states of the first wheel 11 and the second wheel 12 can be flexibly selected, and power switching in different modes can be realized.

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, so that the vehicle has a double-drive mode, and each wheel rotates, thereby being beneficial to improving the escaping capability of the vehicle, adapting to different types of running road conditions and improving the dynamic performance of the vehicle; 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 second motor 22 actively drive the first wheel 11 and the second wheel 12 at the same time, the power performance of the first wheel 11 and the second wheel 12 can be enhanced.

According to the power transmission system 100 of the embodiment of the utility model, independent driving of the first wheel 11 and the second wheel 12 can be realized, the escaping capability of the vehicle can be improved, the setting of an independent generator can be reduced, and when the first motor 21 generates electricity, effective driving of the two wheels can be ensured, the dynamic performance of the vehicle in the electricity generation process is ensured, and the first motor 21 and the second motor 22 can both drive the first wheel 11 and the second wheel 12, so that the dynamic performance of the vehicle in pure electric driving can be enhanced.

In some embodiments, the powertrain 100 further includes a differential 5, the first wheel 11 is coupled to the first axle 31, the second wheel 12 is coupled to the second axle 32, the differential 5 is in power connection with the first axle 31 and the second axle 32, respectively, as shown in fig. 1, the differential 5 is located between the first axle 31 and the second axle 32, and the differential 5 may be in power connection with both the first axle 31 and the second axle 32.

The first electric machine 21 is selectively connected with the first wheel axle 31 and the differential 5 in a power-driven manner, that is to say, the first electric machine 21 can be connected with the first wheel axle 31 in a power-driven manner or with the differential 5 in a power-driven manner. Specifically, the first motor 21 may be used to drive the first wheel 11 alone for rotation when the first motor 21 is in power connection with the first axle 31, and the first motor 21 may be used to drive the first wheel 11 and the second wheel 12 for rotation when the first motor 21 is in power connection with the differential 5. Likewise, the second electric machine 22 is selectively in power connection with the second axle 32 and the differential 5, and the second electric machine 22 may be in power connection with either the second axle 32 or the differential 5. Specifically, the second motor 22 may be used to separately drive the second wheel 12 for rotation when the second motor 22 is in power connection with the second axle 32, and the second motor 22 may be used to drive the first wheel 11 and the second wheel 12 for rotation when the second motor 22 is in power connection with the differential 5.

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 differential 5 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 differential 5, the power may be output from the differential 5 to the first wheel 11 and the second wheel 12, respectively. Specifically, as shown in fig. 1, the first motor 21 is selectively in power connection with the right front wheel axle, and the second motor 22 is selectively in power connection with the left front wheel axle.

In some embodiments, the power transmission system 100 further includes a first input shaft 35, the first input shaft 35 is in power connection with the first motor 21, the first input shaft 35 is provided with a first transmission gear 352, a second transmission gear 353 and a first synchronizer 41, the first synchronizer 41 is used to power connect the first input shaft 35 with the first transmission gear 352 or the second transmission gear 353, that is, the first motor 21 can transmit power to the first input shaft 35, and the power can be flexibly input to the first transmission gear 352 or the second transmission gear 353 from the first input shaft 35 by switching the state of the first synchronizer 41.

The first wheel shaft 31 is provided with a first output gear 311 meshed with a first transmission gear 352, as shown in fig. 1, the first wheel shaft 31 is sleeved with the first output gear 311, and the first output gear 311 is in circumferential transmission fit with the first wheel shaft 31, so that when the first synchronizer 41 connects the first transmission gear 352 with the first input shaft 35 in a power mode, power on the first motor 21 can be transmitted to the first wheel shaft 31 through the first input shaft 35, the first transmission gear 352 and the first output gear 311, and further the first wheel 11 is independently driven to rotate. And, the differential 5 is provided with a differential gear 51 engaged with the second transmission gear 353, as shown in fig. 1, the differential gear 51 is arranged outside the housing of the differential 5, and the differential gear 51 is integral with the housing of the differential 5, so that when the first synchronizer 41 connects the second transmission gear 353 with the first input shaft 35 in a power manner, the power on the first motor 21 can be transmitted to the differential 5 through the first input shaft 35, the second transmission gear 353 and the differential gear 51, and then transmitted from the differential 5 to the first wheel axle 31 and the second wheel axle 32 respectively, thereby realizing the common driving of the first wheel 11 and the second wheel 12.

Thus, the first motor 21 can switch the power output state by matching the first transmission gear 352, the second transmission gear 353 and the first synchronizer 41 on the first input shaft 35, and flexibly select to drive the first wheel 11 alone or drive the first wheel 11 and the second wheel 12 simultaneously. It should be noted that, when the first synchronizer 41 has three working positions, as shown in fig. 1, the first synchronizer 41 is located on the right side, the first synchronizer may be combined with the first transmission gear 352, and when it is located on the left side, the first synchronizer 41 may be combined with the second transmission gear 353, and when the first synchronizer 41 is located on the middle position, the power of the first motor 21 is not output from the first input shaft 35, 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 to generate power.

In some embodiments, the first motor 21 is provided with a first motor gear 211, the first input shaft 35 is provided with a first input gear 351, the first input gear 351 is meshed with the first motor gear 211, specifically, as shown in fig. 1, 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 motor shaft, meanwhile, the first motor gear 211 and the first input gear 351 can be meshed to drive the first input gear 351 to rotate, wherein the first input gear 351 is fixedly connected with the first input shaft 35 in a circumferential direction, so that the first input gear 351 drives the first input shaft 35 to rotate, and further power output of the first motor 21 is achieved.

Therefore, through the transmission cooperation of the first motor gear 211 and the first input gear 351, not only can the power transmission from the first motor 21 to the first input shaft 35 be realized, but also the first motor 21 and the first input shaft 35 can be sequentially distributed in the longitudinal direction of the vehicle, so that the space of the vehicle in the longitudinal direction is reasonably utilized, and the structural installation in the transverse direction is prevented from being excessively compact.

In some embodiments, the power transmission system 100 further includes a second input shaft 36, the second input shaft 36 is in power connection with the second motor 22, the second input shaft 36 is provided with a third transmission gear 362, a fourth transmission gear 363 and a second synchronizer 42, the second synchronizer 42 is used to power connect the second input shaft 36 with the third transmission gear 362 or the fourth transmission gear 363, that is, the second motor 22 can transmit power to the second input shaft 36, and the power can be flexibly input from the second input shaft 36 to the third transmission gear 362 or the fourth transmission gear 363 by switching the state of the second synchronizer 42.

The second wheel axle 32 is provided with a second output gear 321 meshed with a third transmission gear 362, as shown in fig. 1, the second wheel axle 32 is sleeved with the second output gear 321, and the second output gear 321 is in circumferential transmission fit with the second wheel axle 32, so that when the second synchronizer 42 connects the third transmission gear 362 with the second input shaft 36 in a power manner, the power on the second motor 22 can be transmitted to the second wheel axle 32 through the second input shaft 36, the third transmission gear 362 and the second output gear 321, and further the second wheel 12 is independently driven to rotate. And, the differential 5 is provided with a differential gear 51 meshed with the fourth transmission gear 363, as shown in fig. 1, the differential gear 51 is arranged outside the housing of the differential 5, the differential gear 51 can be meshed with the fourth transmission gear 363, and the differential gear 51 is integrated with the housing of the differential 5, so that when the second synchronizer 42 connects the fourth transmission gear 363 with the second input shaft 36 in a power manner, the power on the second motor 22 can be transmitted to the differential 5 through the second input shaft 36, the fourth transmission gear 363 and the differential gear 51, and then transmitted from the differential 5 to the first wheel axle 31 and the second wheel axle 32 respectively, thereby realizing the common driving of the first wheel 11 and the second wheel 12.

Thus, the second motor 22 can realize the switching of the power output state through the cooperation of the third transmission gear 362, the fourth transmission gear 363 and the second synchronizer 42 on the second input shaft 36, and flexibly select to drive the first wheel 11 alone or drive the first wheel 11 and the second wheel 12 simultaneously. It should be noted that, the second synchronizer 42 has three working positions, as shown in fig. 1, when the second synchronizer 42 is located on the right side, the coupling with the fourth transmission gear 363 is achieved, and when it is located on the left side, the coupling with the third transmission gear 362 is achieved, and when the second synchronizer 42 is located at the middle position, the power of the second motor 22 is not output from the second input shaft 36.

In some embodiments, the second motor 22 is provided with a second motor gear 221, the second input shaft 36 is provided with a second input gear 361, the second input gear 361 is meshed with the second motor gear 221, specifically, as shown in fig. 1, 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 second motor gear 221 can rotate along with the motor shaft, meanwhile, the second motor gear 221 and the second input gear 361 are meshed to drive the second input gear 361 to rotate, wherein the second input gear 361 is fixedly connected with the second input shaft 36 in a circumferential direction, so that the second input gear 361 drives the second input shaft 36 to rotate, and further power output of the second motor 22 is achieved.

Therefore, by arranging the transmission fit of the second motor gear 221 and the second input gear 361, not only can the power transmission from the second motor 22 to the second input shaft 36 be realized, but also the second motor 22 and the second input shaft 36 can be sequentially distributed in the longitudinal direction of the vehicle, so that the space of the vehicle in the longitudinal direction is reasonably utilized, and the excessively compact structural installation in the transverse direction is avoided.

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 transverse 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 and the other 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 and the other 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 located on the front and rear sides of the second wheel axle 32, respectively, wherein the second wheel axle 32 extends in the lateral direction of the vehicle, whereby the first motor 21 may be located on the front side of the second wheel axle 32 and the second motor 22 may be located on the rear side of the second wheel axle 32, or the first motor 21 may be located on the rear side of the second wheel axle 32 and the second motor 22 may be located on the front side of the second wheel axle 32. Specifically, as shown in fig. 1, the first axle 31 is a right front axle, the second axle 32 is a left front axle, and the first motor 21 is located in front of the second axle 32, and the second motor 22 is located behind the second axle 32, so that the first motor 21 and the second motor 22 can utilize the space in the front-rear direction of the second axle 32, respectively, so that the arrangement of the first motor 21 and the second motor 22 is relatively dispersed, and is not excessively compact.

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 21 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 the power generation process is further realized.

The clutch 43 is disposed between the extender Cheng Chilun and the extender 25, i.e. the state of the clutch 43 can be switched, so as to flexibly switch the connection state between the extender 25 and the extender Cheng Chilun. 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 through the clutch 43, 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 through the clutch 43, and the power between the two is disconnected.

Therefore, when the clutch 44 is in power engagement with the range extender 25 and the range extender Cheng Chilun, the range extender 25 is in power connection with the first motor 21, so that the range extender 25 is used for driving the first wheel 11 and the second wheel 12 to rotate, a direct drive mode of the range extender 25 is realized, and the energy consumption is saved, and more oil is saved under certain specific working conditions. In the parallel driving mode, the first synchronizer 41 is located on the right side and combined with the first transmission gear 352, so that the range extender 25 drives the first wheel 11 alone or drives the first wheel 11 to rotate together with the first motor 21, and at this time, the first wheel 11 can obtain larger wheel end torque, and the dynamic property of the vehicle is enhanced.

In some embodiments, the first wheel 11 and the second wheel 12 are both front wheels, the first motor 21 and the second motor 22 can be used to drive the two front wheels to rotate, and in this embodiment, the four-wheel vehicle further includes two rear wheels, namely, a third wheel 13 and a fourth wheel 14, respectively, the third wheel 13 is connected with a third wheel axle 33, the fourth wheel 14 is connected with a fourth wheel axle 34, or the third wheel 13 and the fourth wheel 14 are simultaneously connected with the same wheel axle.

Specifically, as shown in fig. 1, the first wheel 11 is a right front wheel, the second wheel 12 is a left 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 right front wheel axle, the second wheel axle 32 is a left 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 front right wheel to rotate, and can also be used for matching with the range extender 25 to realize power generation, meanwhile, the second motor 22 can be used for driving the front left wheel to rotate, and can also simultaneously drive the front left wheel and the front right wheel to rotate so as to realize a two-drive mode of the vehicle, so that the two motors can respectively drive the two wheels to respectively rotate, the two rear wheels are driven to rotate, the structure is simple, and the setting cost of the motor is reduced.

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 the right front axle, the second axle 32 is the left front axle, while the third axle 33 and the fourth axle 34 are both rear axles, the third axle 33 is the right rear axle, and the fourth axle 34 is the 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, in the present embodiment, the direct-drive mode of the range extender 25 is a gear, and according to the actual use requirement, the gear number can be increased based on the present embodiment, which falls into the scope of the present embodiment, so as to satisfy the use requirement of a plurality of different gears of a user. And the embodiment also comprises a braking energy recovery mode so as to recover the redundant energy in the running process of the vehicle for the subsequent running use of the vehicle and the like.

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 selectively and dynamically connectable with the range extender 25, the first motor 21 is selectively and dynamically connectable with the right front wheel, the first motor 21 is also selectively and dynamically connectable with the differential 5, while the second motor 22 is selectively and dynamically connectable with the left front wheel, the second motor 22 is also selectively and dynamically connectable with the differential 5, such that the first motor 21 and the second motor 22 can be used together to drive the two front wheels to rotate, and both the first motor 21 and the second motor 22 can be used to drive the left front wheel and the right front wheel to rotate simultaneously through the differential 5, such that when the first motor 21 is used to generate power in cooperation with the range extender 25, the second motor 22 can drive both front wheels to rotate simultaneously.

Therefore, by arranging the power transmission system 100, the first motor 21 and the second motor 22 drive the two front wheels to rotate so as to drive the two rear wheels to rotate, so that the power driving of the whole vehicle is realized, and the arrangement cost of the power system of the vehicle can be reduced only through the two-drive mode. And the arrangement of an independent generator can be reduced, and when the first motor 21 generates electricity, the effective driving of the two wheels 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;

A first motor and a second motor, the first motor being arranged in powered connection with the first wheel or with the first wheel and the second wheel simultaneously, the second motor being arranged in powered connection with the second wheel or with the first wheel and the second wheel simultaneously;

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

2. The drivetrain of claim 1, further comprising a differential coupled to the first wheel axle and the second wheel axle, the differential being in dynamic communication with the first and second wheel axles, respectively;

Wherein the first motor is selectively in power connection with the first axle and the differential, and the second motor is selectively in power connection with the second axle and the differential.

3. The drivetrain of claim 2, further comprising a first input shaft electrically connected to the first motor, the first input shaft having a first transfer gear, a second transfer gear, and a first synchronizer for dynamically connecting the first input shaft to the first transfer gear or the second transfer gear;

The first wheel axle is provided with a first output gear meshed with the first transmission gear, and the differential is provided with a differential gear meshed with the second transmission gear.

4. A drivetrain according to claim 3, wherein the first motor is provided with a first motor gear, the first input shaft is provided with a first input gear, and the first input gear is meshed with the first motor gear.

5. The drivetrain of claim 2, further comprising a second input shaft electrically connected to the second motor, the second input shaft having a third transfer gear, a fourth transfer gear, and a second synchronizer for dynamically connecting the second input shaft to the third transfer gear or the fourth transfer gear;

The second wheel axle is provided with a second output gear meshed with the third transmission gear, and the differential is provided with a differential gear meshed with the fourth transmission gear.

6. The drivetrain of claim 5, wherein the second motor is provided with a second motor gear, the second input shaft is provided with a second input gear, and the second input gear is meshed with the second motor gear.

7. The drivetrain of claim 2, wherein 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 either side of the second axle.

8. The drivetrain of any of claims 1-7, further comprising a range extender Cheng Chilun, wherein the first motor is coupled with a first motor gear, the first motor gear is meshed with the range extender Cheng Chilun, and a clutch is disposed between the range extender and the range extender.

9. The powertrain system of any one of claims 1-7, wherein the first and second wheels are each configured as a front wheel;

The range extender and the first motor are both positioned in front of the front wheel shaft, and the second motor is positioned between the front wheel shaft and the rear wheel shaft.

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