CN221233467U - 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: two front wheels; a first motor arranged in power connection with one or both of the front wheels and a second motor arranged in power connection with the other or both of the front wheels; the range extender is selectively and dynamically connected with the first motor; two rear wheels; and the third motor is in power connection with one of the two rear wheels, and the fourth motor is in power connection with the other of the two rear wheels. The power transmission system provided by the embodiment of the utility model can realize independent driving of each wheel, is beneficial to improving the escaping capability of the whole vehicle, can reduce the arrangement of an independent generator, and can still ensure effective driving of each wheel when the first motor generates electricity.

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 realize independent driving by respectively driving four wheels through four motors 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: two front wheels; a first motor arranged in power connection with one or both of the front wheels and a second motor arranged in power connection with the other or both of the front wheels; the range extender is selectively and dynamically connected with the first motor; two rear wheels; and the third motor is in power connection with one of the two rear wheels, and the fourth motor is in power connection with the other of the two rear wheels.

According to the power transmission system provided by the embodiment of the utility model, 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, the effective driving of each wheel 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 right front wheel and the left front wheel, and the dynamic property of the vehicle in pure electric driving is enhanced.

The power transmission system according to some embodiments of the present utility model further comprises a differential mechanism, wherein one of the two front wheels is connected with a first front wheel axle, and the other of the two front wheels is connected with a second front wheel axle, and the differential mechanism is respectively in power connection with the first front wheel axle and the second front wheel axle; wherein the first motor is selectively in power connection with the first front axle and the differential, and the second motor is selectively in power connection with the second front axle and the differential.

The power transmission system according to some embodiments of the present utility model further comprises a first input shaft, wherein the first input shaft is in power connection with the first motor, the first input shaft is provided with a first transmission gear, a second transmission gear and a first synchronizer, and the first synchronizer is used for dynamically connecting the first input shaft with the first transmission gear or the second transmission gear; the first front 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; and/or, the motor driving device further comprises a second input shaft, wherein the second input shaft is in power connection with the second motor, the second input shaft is provided with a third transmission gear, a fourth transmission gear and a second synchronizer, and the second synchronizer is used for dynamically connecting the second input shaft with the third transmission gear or the fourth transmission gear; the second front 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 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; and/or 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 front axle coincides with the axis of the second front axle, and the first motor and the second motor are located on the front and rear sides of the first front axle, respectively.

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

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 present utility model, one of the two rear wheels is connected to a first rear wheel axle, the first rear 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 other of the two rear wheels is connected with a second rear wheel shaft, the second rear wheel shaft is provided with a fourth output gear, the 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 second motor is located between a front axle and a rear axle of the vehicle, and the third motor and the fourth motor are each located rearward of 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,

Front right wheel 11, front left wheel 12, rear right wheel 13, rear left 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,

The first front axle 31, the first output gear 311, the second front axle 32, the second output gear 321, the first rear axle 33, the third output gear 331, the fifth transmission gear 332, the sixth transmission gear 333, the second rear axle 34, the fourth output gear 341, the seventh transmission gear 342, the eighth transmission gear 343, the first input shaft 35, the first input gear 351, the first transmission gear 352, the second transmission gear 353, the second input shaft 36, the second input gear 361, the third transmission gear 362, the 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 power transmission system 100 according to an embodiment of the present utility model with reference to fig. 1, by providing the power transmission system 100, four wheels of a vehicle can be driven independently, so that each wheel has independent escaping capability, and simultaneously, 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: two front wheels, a first motor 21, a second motor 22, a range extender 25, two rear wheels, a third motor 23 and a fourth motor 24.

The two front wheels and the two rear wheels are four wheels of the vehicle, in other words, the power transmission system 100 of the present utility model is applicable to four-wheel vehicles, i.e., the two front wheels are the front right wheel 11 and the front left wheel 12 of the vehicle, and the two rear wheels are the rear right wheel 13 and the rear left wheel 14 of the vehicle, respectively.

The first motor 21 is arranged in power connection with one or both of the two front wheels, that is, the first motor 21 can be used for driving the right front wheel 11 or the left front wheel 12 alone or driving the right front wheel 11 and the left front wheel 12 simultaneously, which is beneficial to increasing the application of the first motor 21; meanwhile, the second motor 22 is provided in power connection with the other of the two front wheels or both front wheels at the same time, i.e., the second motor 22 may be used to drive the left front wheel 12 or the right front wheel 11 alone, or may be used to drive the right front wheel 11 and the left front wheel 12 at the same time.

Specifically, in the embodiment shown in fig. 1, the first motor 21 is in power connection with the front right wheel 11, and the second motor 22 is in power connection with the front left wheel 12. In actual operation, when the first motor 21 drives the right front wheel 11 alone, the second motor 22 can drive the left front wheel 12 alone, so as to realize simultaneous driving of the right front wheel 11 and the left front wheel 12, or when the first motor 21 drives the right front wheel 11 and the left front wheel 12 simultaneously, the second motor 22 can also drive the right front wheel 11 and the left front wheel 12 simultaneously, so that the power states of the right front wheel 11 and the left front wheel 12 can be flexibly selected, and power switching in different modes is realized.

And, the range extender 25 is selectively in power connection with the first motor 21, that is, the range extender 25 is selectively in power connection or disconnection with 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 the present utility model may be used to cooperate with the range extender 25 to generate power actively, or may be used to drive the front right wheel 11 alone or to drive the front right wheel 11 and the front left wheel 12 simultaneously to rotate, so as to implement a multi-purpose arrangement.

The first motor 21 and the second motor 22 may power the front right wheel 11 and the front left wheel 12.

The third motor 23 is in power connection with one of the two rear wheels, and the fourth motor 24 is in power connection with the other of the two rear wheels, as shown in the figure, the third motor 23 is in power connection with the right rear wheel 13, and the fourth motor 24 is in power connection with the left rear wheel 14, whereby the third motor 23 can drive the right rear wheel 13 alone for power output, and the fourth motor 24 can drive the left rear wheel 14 alone for power output, so that both the right rear wheel 13 and the left rear wheel 14 can be driven alone. Thus, the powertrain 100 of the present utility model is applicable to four-wheel drive vehicles.

Therefore, the right front wheel 11, the left front wheel 12, the right rear wheel 13 and the left rear wheel 14 can be driven by separate motors, so that each wheel can rotate independently, the overall escaping capability of the vehicle is improved, the vehicle is suitable for different running road conditions, and the power performance of the vehicle is improved; meanwhile, the first motor 21 can be used for driving the right front 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 right front wheel 11 and the left front wheel 12, so that the problem that the right front 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 right front wheel 11 and the left front wheel 12 at the same time, the power performance of the right front wheel 11 and the left front wheel 12 can be enhanced.

According to the power transmission system 100 of the embodiment of the utility model, 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, the effective driving of each wheel can be ensured when the first motor 21 generates electricity, the dynamic performance of the vehicle in the electricity generation process is ensured, the first motor 21 and the second motor 22 can both drive the right front wheel 11 and the left front wheel 12, and the dynamic performance of the pure electric vehicle is enhanced.

In some embodiments, the powertrain 100 further includes a differential 5, one of the two front wheels being connected with the first front axle 31 and the other of the two front wheels being connected with the second front axle 32, the differential 5 being in power connection with the first front axle 31 and the second front axle 32, respectively. As shown in fig. 1, the right front wheel 11 is connected with a first front wheel axle 31, the left front wheel 12 is connected with a second front wheel axle 32, the differential 5 is located between the first front wheel axle 31 and the second front wheel axle 32, and the differential 5 can be in power connection with both the first front wheel axle 31 and the second front wheel axle 32.

The first electric machine 21 is selectively connected with the first front 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 front 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 right front wheel 11 alone for rotation when the first motor 21 is in power connection with the first front axle 31, and the first motor 21 may be used to drive the right front wheel 11 and the left front 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 front axle 32 and the differential 5, and the second electric machine 22 is either in power connection with the second front axle 32 or in power connection with the differential 5. Specifically, the second motor 22 may be used to drive the left front wheel 12 alone for rotation when the second motor 22 is in power connection with the second front axle 32, and the second motor 22 may be used to drive the right front wheel 11 and the left front wheel 12 for rotation when the second motor 22 is in power connection with the differential 5.

And in a specific design, one of the first front wheel axle 31 and the second front 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 can be output from the differential 5 to the right front wheel 11 and the left front wheel 12, respectively. Specifically, as shown in fig. 1, the first motor 21 is selectively and dynamically connected with the right front wheel axle, the second motor 22 is selectively and dynamically connected with the left front wheel axle, and the first front wheel axle 31 is provided as the right front wheel axle, and the second front wheel axle 32 is provided as 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 front axle 31 is provided with a first output gear 311 meshed with a first transmission gear 352, as shown in fig. 1, the first front axle 31 is sleeved with the first output gear 311, and the first output gear 311 is in circumferential transmission fit with the first front axle 31, so that when the first synchronizer 41 connects the first transmission gear 352 with the first input shaft 35 in a power mode, the power on the first motor 21 can be transmitted to the first front axle 31 through the first input shaft 35, the first transmission gear 352 and the first output gear 311, and further the right front 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 front wheel axle 31 and the second front wheel axle 32 respectively, thereby realizing the common driving of the right front wheel 11 and the left front wheel 12.

Thus, the first motor 21 can realize the switching of the power output state by the cooperation of 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 right front wheel 11 alone or drive the right front wheel 11 and the left front wheel 12 simultaneously. It should be noted that, as shown in fig. 1, the first synchronizer 41 has three working positions, when the first synchronizer 41 is in the upper position, the first synchronizer can be combined with the first transmission gear 352, and when the first synchronizer 41 is in the lower position, the first synchronizer can be combined with the second transmission gear 353, and when the first synchronizer 41 is in 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 can be in power connection with the first motor 21, so that the range extender 25 is used for driving the first motor 21 to operate and start generating power.

And/or, 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 for power connection of 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 front axle 32 is provided with a second output gear 321 meshed with a third transmission gear 362, as shown in fig. 1, the second front axle 32 is sleeved with the second output gear 321, and the second output gear 321 is in transmission fit with the second front axle 32 circumferentially, 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 front axle 32 through the second input shaft 36, the third transmission gear 362 and the second output gear 321, and further the left front wheel 12 is driven to rotate independently. 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 front wheel axle 31 and the second front wheel axle 32 respectively, thereby realizing the common driving of the right front wheel 11 and the left front wheel 12.

Therefore, 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 right front wheel 11 alone or drive the right front wheel 11 and the left front 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 in the upper position, the coupling with the fourth transmission gear 363 is achieved, and when it is in the lower position, the coupling with the third transmission gear 362 is achieved, and when the second synchronizer 42 is in the middle position, the power of the second motor 22 is not output from the second input shaft 36.

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.

And/or, 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 and the second input shaft 36 are fixedly connected in a circumferential direction, and the second input gear 361 can drive the second input shaft 36 to rotate, so that power output of the second motor 22 is realized.

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 front axle 31 coincides with the axis of the second front axle 32, i.e. the first front axle 31 and the second front axle 32 are arranged directly opposite in the lateral direction of the vehicle, in other words, one of the first front axle 31 and the second front axle 32 may be arranged as a left front axle, the other may be arranged as a right front axle, i.e. for enabling driving of the two wheels on the front side.

And the first motor 21 and the second motor 22 are located on the front and rear sides of the first front axle 31, respectively, wherein the second front 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 front axle 32 and the second motor 22 may be located on the rear side of the second front axle 32, or the first motor 21 may be located on the rear side of the second front axle 32 and the second motor 22 may be located on the front side of the second front axle 32. Specifically, as shown in fig. 1, the first front axle 31 is a right front axle, the second front axle 32 is a left front axle, and the first motor 21 is located in front of the second front axle 32, and the second motor 22 is located behind the second front 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 front 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 range extender 25 and the first motor 21 are both located forward of the first front axle 31 or the second front axle 32, and the second motor 22 is located rearward of the first front axle 31 or the second front axle 32. 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 front 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 behind the second front axle 32, so that a short power path can be kept between the second motor 22 and the second front axle 32, the second motor 22 is not required to be compactly installed in the front region 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 region of the vehicle is avoided.

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 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.

In some embodiments, one of the two rear wheels is connected to a first rear axle 33, the first rear 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. As shown in fig. 1, the right rear wheel 13 is connected with a first rear wheel axle 33, and the third motor gear 231 is fixedly sleeved on the motor shaft of the third motor 23, so that the driving force output by the third motor 23 can be sequentially output to the first rear wheel axle 33 through the third motor gear 231, the gear set and the third output gear 331, and power output to the right rear 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 other of the two rear wheels is connected with a second rear wheel axle 34, the second rear 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. As shown in fig. 1, the left rear wheel 14 is connected with a second rear wheel axle 34, and 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 second rear wheel axle 34 through the fourth motor gear 241, the gear set and the fourth output gear 341, so as to realize the power output to the left rear 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.

And in a further embodiment a first motor 21 and a second motor 22 may be used to drive the rotation of the two front wheels and a third motor 23 and a fourth motor 24 may be used to drive the rotation of the two rear wheels.

Therefore, the first motor 21 can be used for driving the front right wheel 11 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 12 to rotate, and can also simultaneously drive the front left wheel 12 and the front right wheel 11 to rotate, the third motor 23 is used for driving the rear right wheel 13 to rotate, and the fourth motor 24 is used for driving the rear left wheel 14 to rotate, so that the four wheels can be respectively driven to rotate by the four motors, the structure is simple, and the escape capability of the whole vehicle can be improved.

In some embodiments, the second motor 22 is located between the front and rear axles of the vehicle, and the third and fourth motors 23, 24 are each located rearward of the rear axle. I.e. the second electric machine 22 is located in the middle region of the vehicle, so that not only the distance between the second electric machine 22 and the second front axle 32 can be reduced, but also the middle space of the vehicle can be better utilized, the third electric machine 23 and the fourth electric machine 24 are both located behind the rear axle, in other words, the third electric machine 23 and the fourth electric machine 24 are both located in the rear region of the vehicle, so that not only the distance between the third electric machine 23 and the first rear axle 33, but also the distance between the fourth electric machine 24 and the second rear axle 34 can be reduced, and the rear space of the vehicle can be better utilized, so that the main components of the power transmission system 100 can utilize the inner space of the vehicle more, the compactness of each part of the vehicle is relatively balanced, and reasonable arrangement of the positions of each component is achieved.

Furthermore, it should be noted that, the powertrain 100 may also implement a parallel mode and an engine direct-drive mode, in which the clutch 43 is combined, and the positions of the first synchronizer 41 and the second synchronizer 42 are the same as those of the pure electric mode, and at this time, the range extender 25 may independently drive the front right wheel 11 or drive the front right wheel 11 together with the first motor 21, so that independent driving of four wheels may be implemented, and not only the same effect as that of the pure electric mode may be achieved, but also a torque greater than that of the pure electric mode may be obtained; in the engine direct drive mode, the clutch 43 is combined, the first synchronizer 41 is in the lower position, the second synchronizer 42 is in the middle position, namely the disconnection mode, at this time, the range extender 25 can be connected with the differential mechanism 5 to transmit power to the first front wheel axle 31 and the second front wheel axle 32, the embodiment is set to be a gear, the increase of the gear number can be realized on the basis of the embodiment, and meanwhile, the engine direct drive mode can save more oil under certain specific working conditions.

And, a differential lock may be provided between the first rear axle 33 and the second rear axle 34 to lock the first rear axle 33 and the second rear axle 34, and a differential lock may be provided between the first front axle 31 and the second front axle 32 to lock the first front axle 31 and the second front axle 32, so that the vehicle has better dynamic performance when climbing a slope. In a specific design, a differential lock can be selectively arranged between two front wheel shafts or two rear wheel shafts according to the whole vehicle requirement.

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 of the embodiments described above is provided. In some specific embodiments, as shown in fig. 1, the vehicle is provided with a front right wheel 11, a front left wheel 12, a rear right wheel 13 and a rear left wheel 14, wherein a first motor 21 is selectively and powerfully connectable with a range extender 25, and the first motor 21 is selectively and powerfully connectable with the front right wheel 11, and the first motor 21 is also selectively and powerfully connectable with the differential 5, while a second motor 22 is selectively and powerfully connectable with the front left wheel 12, and the second motor 22 is also selectively and powerfully connectable with the differential 5, such that the first motor 21 and the second motor 22 can be used together to drive both front wheels in rotation, and both the first motor 21 and the second motor 22 can be used to drive both front left wheel 12 and front right wheel 11 in rotation simultaneously via the differential 5, such that the second motor 22 can drive both front wheels in rotation simultaneously when the first motor 21 is used to generate power in cooperation with the range extender 25.

As shown in fig. 1, the third motor 23 is in power connection with the right rear wheel 13 through a gear set, and the fourth motor 24 is in power connection with the left rear wheel 14 through a gear set, so that two rear wheels can be driven simultaneously through the third motor 23 and the fourth motor 24, whereby independent driving of four wheels can be achieved.

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:

Two front wheels;

A first motor arranged in power connection with one or both of the front wheels and a second motor arranged in power connection with the other or both of the front wheels;

The range extender is selectively and dynamically connected with the first motor;

two rear wheels;

And the third motor is in power connection with one of the two rear wheels, and the fourth motor is in power connection with the other of the two rear wheels.

2. The drivetrain of claim 1, further comprising a differential, one of the two front wheels being connected to a first front axle and the other of the two front wheels being connected to a second front axle, the differential being in dynamic communication with the first and second front axles, respectively;

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

3. The drivetrain of claim 2, further comprising a first input shaft in power connection with the first motor, the first input shaft provided with a first transfer gear, a second transfer gear, and a first synchronizer for dynamically connecting the first input shaft with the first transfer gear or the second transfer gear;

The first front 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;

And/or, the motor driving device further comprises a second input shaft, wherein the second input shaft is in power connection with the second motor, the second input shaft is provided with a third transmission gear, a fourth transmission gear and a second synchronizer, and the second synchronizer is used for dynamically connecting the second input shaft with the third transmission gear or the fourth transmission gear;

the second front 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.

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, the first input gear is in mesh with the first motor gear;

And/or 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.

5. The drivetrain of claim 2, wherein the axis of the first front axle coincides with the axis of the second front axle, and the first motor and the second motor are located on either side of the first front axle.

6. The drivetrain of claim 2, wherein the range extender and the first motor are each located forward of the first front axle or the second front axle, and the second motor is located rearward of the first front axle or the second front axle.

7. The drivetrain of any of claims 1-6, 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.

8. The drivetrain of any one of claims 1-6, wherein one of the two rear wheels is connected to a first rear axle, the first rear axle being provided with a third output gear, the third motor being provided with a third motor gear, the third motor gear being in power connection with the third output gear via a gear set;

The other of the two rear wheels is connected with a second rear wheel shaft, the second rear wheel shaft is provided with a fourth output gear, the 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.

9. The drivetrain of claim 8, wherein the second motor is located between a front axle and a rear axle of the vehicle, and wherein the third motor and the fourth motor are each located rearward of the rear axle.

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