CN221188114U - Power transmission system and vehicle - Google Patents

Abstract

The utility model discloses a power transmission system and a vehicle, comprising: a first wheel, a second wheel, a third wheel, and a fourth wheel; the first motor is arranged to be in power connection with the first wheel or the range extender; a second motor in power connection with the second wheel or simultaneously in power connection with the first wheel and the second wheel when the first motor is in power connection with the range extender; and the third motor is respectively and simultaneously connected with the third wheel and the fourth wheel in a power mode. According to the power transmission system provided by the embodiment of the utility model, the four wheels can be driven by the motors respectively, the getting rid of poverty capacity is improved, the setting of an independent range-increasing motor is reduced, the effective driving of each wheel can be ensured when the first motor generates electricity, the setting cost is reduced, and meanwhile, the dynamic performance of the vehicle in the electricity generation process is ensured, so that the application range is wider.

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, the traditional pure internal combustion engine power has higher oil consumption due to a large-displacement engine, and future oil consumption regulations are difficult to meet, and each vehicle enterprise is exploring the new energy technological route of the off-road vehicle. 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, the setting cost is higher, and an improvement space exists.

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 can reduce the number of the motors, and simultaneously, one motor is used as a range-extending motor, thereby being beneficial to reducing the setting cost and improving the weight reduction of the vehicle.

A drivetrain according to an embodiment of the present utility model includes: a first wheel, a second wheel, a third wheel, and a fourth wheel; the first motor is arranged to be in power connection with the first wheel or the range extender; a second motor in power connection with the second wheel or simultaneously in power connection with the first wheel and the second wheel when the first motor is in power connection with the range extender; and the third motor is respectively and simultaneously connected with the third wheel and the fourth wheel in a power mode.

According to the power transmission system provided by the embodiment of the utility model, the range extender is arranged, the third motor is respectively and simultaneously connected with the third wheel and the fourth wheel in a power mode, so that the arrangement of the independent range extender motor is reduced, the four wheels can be respectively driven by the motors, the escaping capability is improved, the effective driving of each wheel can be still ensured when the first motor generates power, the arrangement cost is reduced, the power performance of the vehicle in the power generation process is ensured, the weight of the vehicle is improved, the use effect is better, and the application range is wider.

The power transmission system according to some embodiments of the present utility model further includes a second differential, the third wheel is connected with a third wheel axle, the fourth wheel is connected with a fourth wheel axle, one side half shaft of the second differential is connected with the third wheel axle, the other side half shaft of the second differential is connected with the fourth wheel axle, and the third motor is in power connection with the second differential.

The power transmission system according to some embodiments of the present utility model further comprises a first input shaft, wherein a first coaxial gear set and a second coaxial gear set are sleeved above the first input shaft, the first input shaft is in power connection with the second differential, and the first coaxial gear set and the second coaxial gear set are respectively in power connection with the third motor;

The first input shaft is provided with a fourth synchronizer used for dynamically connecting the first input shaft with the first coaxial gear set or the second coaxial gear set.

According to some embodiments of the present utility model, the first coaxial gear set includes a first transmission gear and a second transmission gear that are coaxially disposed, the second coaxial gear set includes a third transmission gear and a fourth transmission gear that are coaxially disposed, and the third motor is connected with a third motor gear and a fourth motor gear;

The fourth synchronizer is used for selectively and dynamically connecting the first transmission gear or the third transmission gear with the first input shaft, the third motor gear is meshed with the second transmission gear, and the fourth motor gear is meshed with the fourth transmission gear.

According to some embodiments of the utility model, the first differential is provided with a first differential gear, and the second differential is provided with a second connecting gear, and the first connecting gear is meshed with the second differential gear.

The power transmission system according to some embodiments of the present utility model further includes a first differential provided with a first differential case, the first wheel being connected with a first axle, the second wheel being connected with a second axle, one side half shaft of the first differential being selectively connected with the first axle, and the other side half shaft of the first differential being connected with the second axle;

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

The powertrain system according to some embodiments of the present utility model further includes a first synchronizer for selectively and powerfully connecting the first electric machine with the range extender, a second synchronizer for selectively and powerfully connecting the first electric machine with the first axle and for selectively locking the first axle with one side axle of the first differential, and a third synchronizer for selectively locking the first differential case with one side axle of the first differential.

According to some embodiments of the present utility model, the first motor is connected with a first motor gear, an output shaft sleeve of the range extender is provided with a range extender Cheng Chilun, the range extender is meshed with the first motor gear, and the first synchronizer is used for selectively combining or disconnecting the range extender with the output shaft;

and/or the first motor is connected with a first motor gear, the first wheel shaft is provided with a first output gear, the first output gear is in power connection with the first motor gear, and the second synchronizer is used for selectively combining or disconnecting the first output gear with the first wheel shaft; and/or the axis of the first wheel axle is coincident with the axis of the second wheel axle, and the first motor and the second motor are respectively positioned at the front side and the rear side of the second wheel axle.

According to some embodiments of the utility model, the first and second wheels are each provided as front wheels, and the third and fourth wheels are each provided as rear wheels; and/or, the range extender and the first motor are both positioned in front of the front wheel axle, and the second motor is positioned between the front wheel axle and the rear wheel axle; and/or the third motor is positioned between the front wheel axle and the rear wheel axle.

The utility model further provides a vehicle.

According to the vehicle of the embodiment of the utility model, the power transmission system of any one of the above is provided.

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

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

Drawings

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

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

Reference numerals:

The power train system 100 is configured such that,

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

A first motor 21, a first motor gear 211, a second motor 22, a second motor gear 221, a third motor 23, a third motor gear 231, a fourth motor gear 232, a range extender 24, a range extender Cheng Chilun 241,

A first wheel axle 31, a first output gear 311, a fifth transfer gear 312, a sixth transfer gear 313, a second wheel axle 32, a seventh transfer gear 321, an eighth transfer gear 322, a third wheel axle 33, a fourth wheel axle 34,

A first input shaft 35, a first connecting gear 351, a first transfer gear 352, a second transfer gear 353, a third transfer gear 354, a fourth transfer gear 355,

The first synchronizer 41, the second synchronizer 42, the third synchronizer 43, the fourth synchronizer 44,

A first differential 5, a first left half shaft 51, a second right half shaft 52, a lock gear 53, a first differential gear 54, a first differential case 55, a second differential 6, and a second differential gear 61.

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, in which the number of motors can be reduced, and one of the motors is used as a range-extending motor, which is advantageous in reducing the cost of the arrangement and improving the weight reduction of the vehicle.

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, third wheel 13, fourth wheel 14, first motor 21, range extender 24, second motor 22, third motor 23.

The first motor 21 is arranged in power connection with the first wheel 11 or the range extender 24, the second motor 22 is in power connection with the second wheel 12 or is in power connection with the first wheel 11 and the second wheel 12 simultaneously when the first motor 21 is in power connection with the range extender 24, and the third motor 23 is in power connection with the third wheel 13 and the fourth wheel 14 simultaneously respectively.

The first wheel 11, the second wheel 12, the third wheel 13 and the fourth wheel 14 are respectively four wheels of the vehicle, in other words, the power transmission system 100 in the present utility model can be applied to four-wheel vehicles, that is, one of the first wheel 11, the second wheel 12, the third wheel 13 and the fourth wheel 14 is a front left wheel, one is a front right wheel, one is a rear left wheel and one is a rear right wheel, that is, in actual design, the first wheel 11, the second wheel 12, the third wheel 13 and the fourth wheel 14 can be flexibly paired with the front left wheel, the front right wheel, the rear left wheel and the rear right wheel, that is, the first wheel 11 is not limited to the front left wheel, but also can be other wheels, which are similar and flexibly selectable.

The first motor 21 is disposed in power connection with the first wheel 11 or the range extender 24, that is, the first motor 21 may be used to drive the first wheel 11 to perform power output, or may be used to perform power connection with the range extender 24 to drive the first motor 21 through the range extender 24 to perform power generation, where the range extender 24 may be an engine or other devices that may be used to drive the motor to generate power.

The second motor 22 is in power connection with the second wheel 12 or in power connection with the first wheel 11 and the second wheel 12 simultaneously when the first motor 21 is in power connection with the range extender 24, that is, the second motor 22 can be used for independently driving the second wheel 12 to perform power output, or can be used for simultaneously driving the first wheel 11 and the second wheel 12 when the first motor 21 is used for being matched with the range extender 24 to perform power generation, so that the first wheel 11 and the second wheel 12 have power output when the first motor 21 generates power or does not generate power. Thus, during the running of the vehicle, the vehicle can be operated in either the power generation and driving mode or the driving mode alone.

The third motor 23 is in simultaneous power connection with the third wheel 13 and the fourth wheel 14 respectively, so that the third motor 23 can drive the third wheel 13 and the fourth wheel 14 simultaneously to output power, and the third wheel 13 and the fourth wheel 14 can be driven by only one motor, thereby reducing the vehicle setting cost and improving the vehicle weight. Thus, the powertrain 100 of the present utility model is applicable to four-wheel drive vehicles.

Thus, the first wheel 11 and the second wheel 12 can be driven by separate motors, and the third wheel 13 and the fourth wheel 14 can be driven by one motor at the same time, so that the number of motors can be reduced, the setting cost can be reduced, and the weight of the vehicle can be improved; meanwhile, the first motor 21 can be used for driving the first wheel 11 to carry out power driving, and can be used as a generator to carry out power matching with the range extender 24, 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.

According to the power transmission system 100 of the embodiment of the utility model, the range extender 24 is arranged, and the third motor 23 is respectively and simultaneously connected with the third wheel 13 and the fourth wheel 14 in a power mode, so that the arrangement of the independent range extender motor is reduced, the four wheels can be driven through the motors respectively, the escaping capability is improved, the effective driving of each wheel can be ensured when the first motor 21 generates power, the arrangement cost is reduced, the power performance of the vehicle in the power generation process is ensured, the weight of the vehicle is improved, the use effect is better, and the application range is wider.

In some embodiments, the powertrain 100 further includes a second differential 6, the third wheel 13 is connected with a third axle 33, the fourth wheel 14 is connected with a fourth axle 34, one side axle of the second differential 6 is connected with the third axle 33, and the other side axle of the second differential 6 is connected with the fourth axle 34, and the third electric machine 23 is in power connection with the second differential 6.

Specifically, the powertrain 100 is further provided with the second differential 6, and the third wheel 13 is connected with the third wheel axle 33, and the fourth wheel 14 is connected with the fourth wheel axle 34, it should be noted that the third wheel axle 33 and the fourth wheel axle 34 may be two axles disposed opposite each other in the lateral direction of the vehicle, for example, one of the third wheel axle 33 and the fourth wheel axle 34 is a right front axle, and the other is a left front axle, or one of the third wheel axle 33 and the fourth wheel axle 34 is a right rear axle, and the other is a left rear axle.

And one side half shaft of the second differential 6 is connected to the third wheel axle 33, the other side half shaft of the second differential 6 is connected to the fourth wheel axle 34, i.e. the second differential 6 is provided with two connecting shafts, the second left side half shaft of the second differential 6 may be connected to the third wheel 13, the second right side half shaft of the second differential 6 may be connected to the fourth wheel 14, or the second right side half shaft of the second differential 6 may be connected to the third wheel 13, the second left side half shaft of the second differential 6 may be connected to the fourth wheel 14, as in the embodiment shown in fig. 1, the third wheel axle 33 is a right rear wheel axle, the fourth wheel axle 34 is a left rear wheel axle, and the second left side half shaft of the second differential 6 is connected to the left rear wheel axle, the second right side half shaft of the second differential 6 may be connected to the right rear wheel axle, wherein the third motor 23 is simultaneously in dynamic connection with the third wheel axle 33 and the fourth wheel axle 34.

Thus, when the vehicle is traveling, the third motor 23 can be simultaneously connected with the third wheel shaft 33 and the fourth wheel shaft 34 by the second differential mechanism 6, and at this time, the third motor 23 can simultaneously drive the third wheel shaft 33 and the fourth wheel shaft 34 to rotate, thereby realizing the driving of the third wheel 13 and the fourth wheel 14 by using one motor, reducing the installation cost and improving the weight of the vehicle.

In some embodiments, the powertrain 100 further includes a first input shaft 35, the first input shaft 35 being sleeved with a first coaxial gear set and a second coaxial gear set, the first input shaft 35 being in power connection with the second differential 6, the first coaxial gear set and the second coaxial gear set being in power connection with the third motor 23, respectively; the first input shaft 35 is provided with a fourth synchronizer 44, the fourth synchronizer 44 being used to power connect the first input shaft 35 with the first coaxial gear set or the second coaxial gear set.

Specifically, as shown in fig. 1, the power transmission system 100 is further provided with a first input shaft 35, the third motor 23 may be in power connection with the second differential mechanism 6 through the first input shaft 35, and further may drive the third axle 33 and the fourth axle 34 through the third motor 23, the first input shaft 35 is sleeved with a first coaxial gear set and a second coaxial gear set, and the first coaxial gear set and the second coaxial gear set are respectively in power connection with the third motor 23, that is, the third motor 23 may be in power connection with the first coaxial gear set, or may be in power connection with the second coaxial gear set.

Further, the first input shaft 35 is provided with a fourth synchronizer 44, the fourth synchronizer 44 is used for dynamically connecting the first input shaft 35 with the first coaxial gear set or the second coaxial gear set, that is, when the fourth synchronizer 44 moves to the right, the first coaxial gear set can be dynamically connected with the first input shaft 35, when the fourth synchronizer 44 moves to the left, the second coaxial gear set can be dynamically connected with the first input shaft 35, and further, the power input to the first input shaft 35 through different coaxial gear sets is realized through the fourth synchronizer 44, wherein the gear sizes of the first coaxial gear set and the second coaxial gear set are different, so that the speed ratio of the output of the third motor 23 through the first coaxial gear set is different from the speed ratio of the output of the third motor 23 through the second coaxial gear set.

In some embodiments, the first coaxial gear set includes a first transmission gear 352 and a second transmission gear 353 coaxially disposed, the second coaxial gear set includes a third transmission gear 354 and a fourth transmission gear 355 coaxially disposed, and the third motor 23 is connected with the third motor gear 231 and the fourth motor gear 232; the fourth synchronizer 44 is used for selectively and dynamically connecting the first transmission gear 352 or the third transmission gear 354 with the first input shaft 35, the third motor gear 231 is meshed with the second transmission gear 353, and the fourth motor gear 232 is meshed with the fourth transmission gear 355.

Specifically, as shown in fig. 1, the third motor gear 231 and the fourth motor gear 232 are disposed on a motor shaft of the third motor 23 and fixedly connected with the motor shaft, so that the third motor 23 can drive the third motor gear 231 and the fourth motor gear 232 to rotate, and meanwhile, the first transmission gear 352, the second transmission gear 353, the third transmission gear 354 and the fourth transmission gear 355 are connected between the third motor 23 and the second differential gear 61, so that the third motor 23 can drive the second differential 6 to rotate, and the third wheel axle 33 and the fourth wheel axle 34 can be driven to rotate.

Meanwhile, the first transmission gear 352 and the second transmission gear 353 have different gear sizes, and the third motor gear 231 and the fourth motor gear 232 have different sizes, as shown in fig. 1, the third motor gear 231 is meshed with the second transmission gear 353, the outer diameter of the second transmission gear 353 is larger than that of the first transmission gear 352, and when the fourth synchronizer 44 moves right, the first transmission gear 352 is in power connection with the first input shaft 35, so that after the third motor gear 231 performs power transmission through the second transmission gear 353 and the first transmission gear 352, output with a certain speed ratio can be realized, thereby realizing powerful driving of the third wheel 13 and the fourth wheel 14, and realizing change of the power direction from the third motor gear 231 to the second differential gear 61.

Meanwhile, the fourth motor gear 232 is engaged with the fourth transmission gear 355, the outer diameter of the fourth transmission gear 355 is larger than the outer diameter of the third transmission gear 354, and when the fourth synchronizer 44 moves leftwards, the third transmission gear 354 is in power connection with the first input shaft 35, so that after the fourth motor gear 232 performs power transmission through the fourth transmission gear 355 and the third transmission gear 354, output of a certain speed ratio can be realized, thereby realizing powerful driving of the third wheel 13 and the fourth wheel 14, and realizing change of the power direction from the third motor gear 231 to the second differential gear 61.

Wherein, because the gear sizes of the first transmission gear 352 and the second transmission gear 353 are different, and the size of the third motor gear 231 and the fourth motor gear 232 are also different, different speeds can be further output, different gears are realized to correspond to different speeds, and different requirements are met.

And when specifically provided, the first transmission gear 352, the second transmission gear 353, the third transmission gear 354 and the fourth transmission gear 355 are arranged at intervals in the lateral direction of the vehicle, and the first transmission gear 352, the second transmission gear 353, the third transmission gear 354 and the fourth transmission gear 355 are arranged between the third motor 23 and the second differential gear 61 in the longitudinal direction of the vehicle, so as to reasonably utilize the space of the vehicle in the longitudinal direction, avoiding excessively compact lateral installation space of the vehicle.

In some embodiments, the second differential 6 is provided with a second differential gear 61, the first input shaft 35 is provided with a first connecting gear 351, and the first connecting gear 351 meshes with the second differential gear 61.

Specifically, as shown in fig. 1, the second differential mechanism 6 is provided with a second differential gear 61, and the first input shaft 35 is provided with a first connecting gear 351, the first connecting gear 351 is fixed at one end of the first input shaft 35 facing away from the gear set, and the first connecting gear 351 is meshed with the second differential gear 61, that is, when the first input shaft 35 rotates, the first connecting gear 351 can rotate simultaneously, and then the second differential gear 61 meshed with the first connecting gear 351 is driven to rotate, so that the second differential mechanism 6 drives the third wheel axle 33 and the fourth wheel axle 34 to rotate.

Further, when the fourth synchronizer 44 moves left, the first transmission gear 352 is in power connection with the first input shaft 35, the third motor gear 231 is meshed with the second transmission gear 353, and the first transmission gear 352 drives the first input shaft 35 to rotate, so that the first connection gear 351 drives the second differential gear 61 to rotate, and the second differential 6 drives the third axle 33 and the fourth axle 34 to rotate, and when the fourth synchronizer 44 moves right, the third transmission gear 354 is in power connection with the first input shaft 35, the fourth motor gear 232 is meshed with the fourth transmission gear 355, and the third transmission gear 354 drives the first input shaft 35 to rotate, so that the first connection gear 351 drives the second differential gear 61 to rotate, and the second differential 6 drives the third axle 33 and the fourth axle 34 to rotate, so that different power can be output.

In some embodiments, the powertrain 100 further includes a first differential 5, the first differential 5 being provided with a first differential housing 55, the first wheels 11 being connected with the first axle 31, the second wheels 12 being connected with the second axle 32, one side axle of the first differential 5 being selectively connected with the first axle 31, and the other side axle of the first differential 5 being connected with the second axle 32.

It should be noted that the first axle 31 and the second axle 32 may be two axles disposed opposite to each other in the lateral direction of the vehicle, for example, one of the first axle 31 and the second axle 32 is a right front axle and the other is a left front axle, or one of the first axle 31 and the second axle 32 is a right rear axle and the other is a left rear axle.

As in the embodiment 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 left axle shaft 51 of the first differential 5 is selectively connectable with the left front axle, and the right axle shaft 52 of the first differential 5 is connectable with the right front axle, wherein the first motor 21 is selectively in power connection with the first axle 31 and the second motor 22 is in power connection with the first differential housing 55.

Therefore, when the first motor 21 does not generate electricity, the first motor can be in power connection with the first wheel axle 31, the first wheel axle 31 is disconnected with the right side half axle 52 of the first differential mechanism 5, the second motor 22 is connected with the first differential mechanism shell 55, at the moment, the first motor 21 can drive the first wheel axle 31 to rotate, the second motor 22 can drive the second wheel axle 32 to rotate through the first differential mechanism 5, so that the first wheel axle 31 and the second wheel axle 32 are simultaneously in a rotating state, and the driving of the first wheel 11 and the second wheel 12 is realized. In this process, the range extender 24 is not operated, and the power between the range extender 24 and the first motor 21 is disconnected.

When the first motor 21 generates power, the power between the first motor 21 and the first wheel axle 31 is disconnected, the second motor 22 is in power connection with the first differential case 55, at this time, the first differential case 55 is in a connection state with the first left side half axle 51 and the right side half axle 52 of the first differential 5, the first left side half axle 51 of the first differential 5 can be connected with the second wheel axle 32, and the first right side half axle 52 of the first differential 5 can be connected with the first wheel axle 31, so that the second motor 22 can drive the first wheel axle 31 and the second wheel axle 32 through the first differential 5 at the same time, thereby realizing power driving.

In some embodiments, the powertrain 100 further includes a first synchronizer 41, a second synchronizer 42, and a third synchronizer 43, where the first synchronizer 41 is configured to selectively and dynamically connect the first motor 21 with the range extender 24, the second synchronizer 42 is configured to selectively and dynamically connect the first motor 21 with the first axle 31, and to selectively lock the first axle 31 with one side half shaft of the first differential 5, that is, the power connection state between the first motor 21 and the range extender 24 is controlled by the first synchronizer 41, and the connection state between the first motor 21 and the first axle 31, and the first axle 31 with one side half shaft of the first differential 5 is controlled by the second synchronizer 42.

The third synchronizer 43 is used for selectively locking the first differential case 55 with one side half shaft of the first differential 5, and it is understood that the two side half shafts of the first differential 5 are relatively rotatable to achieve a differential action when the first differential case 55 is separated from one side half shaft of the first differential 5, and the two side half shafts of the first differential 5 are relatively locked and rotated as a unit when the first differential case 55 is connected with one side half shaft of the first differential 5.

Specifically, in power generation by the first motor 21, the first motor 21 and the range extender 24 may be power-connected by the first synchronizer 41, while the second synchronizer 42 power-disconnects the first motor 21 from the first wheel axle 31, while the second synchronizer 42 connects the first wheel axle 31 with the right side half axle 52 of the first differential 5, and the third synchronizer 43 separates the first differential case 55 from the right side half axle 52 of the first differential 5, so that the second motor 22 may drive the first wheel axle 31 and the second wheel axle 32 by the first differential 5, respectively, driving of the first wheel 11 and the second wheel 12 is achieved, and the first motor 21 is made only for power generation.

When the first motor 21 drives the first wheel 11 by power, the first motor 21 and the range extender 24 are disconnected by the first synchronizer 41, the second synchronizer 42 connects the first motor 21 and the first wheel axle 31 by power and separates the first wheel axle 31 from the right half axle 52 of the first differential 5, the third synchronizer 43 locks the first differential case 55 and the right half axle 52 of the first differential 5, the second motor 22 is connected with the first differential case 55 by power, so that the power output by the first motor 21 is used for driving the first wheel 11 to rotate, and the power output by the second motor 22 is used for driving the second wheel 12 to rotate.

Therefore, when the first motor 21 is used for generating electricity or driving the first wheel 11, the power requirement on the first motor 21 can be low, the load of the first motor 21 is reduced, and the service life of the first motor 21 is prolonged.

In some embodiments, the first motor 21 is connected with a first motor gear 211, the output shaft sleeve of the range extender 24 is provided with a range extender Cheng Chilun, the range extender Cheng Chilun is meshed with the first motor gear 211, and the first synchronizer 41 is used for selectively combining or disconnecting the range extender Cheng Chilun with the output shaft; as shown in fig. 1, a first motor gear 211 is disposed outside a motor shaft of the first motor 21, the motor shaft of the first motor 21 can drive the first motor gear 211 to rotate when power is output, the Cheng Chilun is sleeved outside an output shaft of the range extender 24 and is in blank fit with the output shaft of the range extender 24, meanwhile, the first synchronizer 41 is sleeved outside the output shaft of the range extender 24, and the first synchronizer 41 can move relative to the output shaft of the range extender 24 so as to selectively and dynamically connect the output shaft of the range extender 24 with the range extender Cheng Chilun 241.

And/or, the first motor 21 is connected with a first motor gear 211, the first wheel axle 31 is provided with a first output gear 311, the first output gear 311 is in power connection with the first motor gear 211, and the second synchronizer 42 is used for selectively combining or disconnecting the first output gear 311 with the first wheel axle 31. As shown in fig. 1, a first motor gear 211 is disposed outside a motor shaft of the first motor 21, the first motor 21 can drive the first motor gear 211 to rotate when power is output, meanwhile, a first output gear 311 is sleeved outside the first wheel shaft 31 and is in idle fit with the first wheel shaft 31, meanwhile, a second synchronizer 42 is sleeved outside the first wheel shaft 31, and the second synchronizer 42 can move relative to the first wheel shaft 31 so as to selectively and dynamically connect the first wheel shaft 31 with the first output gear 311.

And, as shown in fig. 1, a locking gear 53 is sleeved outside the other side half shaft of the first differential 5, the locking gear 53 is coaxially distributed with a first differential gear 54 of the first differential 5, and a third synchronizer 43 is sleeved outside the other side half shaft of the first differential 5, so that the third synchronizer 43 can selectively lock the locking gear 53 with the other side half shaft of the first differential 5, thereby locking the first differential case 55 with the other side half shaft of the first differential 5, and facilitating the differential unlocking and locking of the two side half shafts of the first differential 5.

Specifically, as shown in fig. 1, in the power generation mode, the first synchronizer 41 may be moved leftward to cause the first synchronizer 41 to power-connect the speed increaser Cheng Chilun with the output shaft of the speed increaser 24, while the second synchronizer 42 is moved leftward to cause the second synchronizer 42 to power-disconnect the first output gear 311 from the first wheel shaft 31, and the second synchronizer 42 connects the first wheel shaft 31 with the other side wheel shaft of the first differential 5, the third synchronizer 43 is moved leftward to separate the first differential case 55 from the other side half shaft of the first differential 5, so that both side half shafts of the first differential 5 may be differentially rotated to simultaneously drive the first wheel 11 and the second wheel 12 through the second motor 22; at this time, the range extender 24 is started to operate, the power of the range extender 24 can be transmitted to the range extender Cheng Chilun 241 through the output shaft of the range extender, the range extender Cheng Chilun 241 is meshed with the first motor gear 211 to transmit the power to the first motor gear 211, and then the first motor 21 is driven to operate to start power generation, so that the power generation effect is achieved, the first output gear 311 idles, power output can not be carried out, and the power generation power is ensured to be sufficient.

When the first motor 21 is in the drive wheel mode, the first synchronizer 41 may be moved rightward so that the first synchronizer 41 power-separates the speed increaser Cheng Chilun from the output shaft of the speed increaser 24, while the second synchronizer 42 is moved rightward so that the second synchronizer 42 power-connects the first output gear 311 with the first wheel shaft 31, and the second synchronizer 42 separates the first wheel shaft 31 from the other side wheel shaft of the first differential 5, and the third synchronizer 43 moves rightward so as to lock the first differential case 55 with the other side half shaft of the first differential 5. At this time, the range extender 24 stops running, the first motor 21 starts running and outputs driving force, the first motor gear 211 can drive the first output gear 311 to rotate, and the first output gear 311 drives the first wheel shaft 31 to rotate through the second synchronizer 42, the first motor 21 drives the first wheel 11, the second motor 22 drives the second wheel 12 to rotate, and the range extender Cheng Chilun is at idle running, and does not reversely exert force towards the range extender 24, so that sufficient power for driving the first wheel 11 is ensured.

In some embodiments, the powertrain 100 further includes a fifth transfer gear 312 and a sixth transfer gear 313 coaxially disposed, the fifth transfer gear 312 being meshed with the first motor gear 211, the sixth transfer gear 313 being meshed with the first output gear 311 such that the first motor gear 211 and the first output gear 311 can transmit power through the fifth transfer gear 312 and the sixth transfer gear 313.

It should be noted that, the gear sizes of the fifth transmission gear 312 and the sixth transmission gear 313 are different, and as shown in fig. 1, the outer diameter of the fifth transmission gear 312 is larger than the outer diameter of the sixth transmission gear 313, so that after the first motor gear 211 performs power transmission through the fifth transmission gear 312 and the sixth transmission gear 313, output with a certain speed ratio can be achieved, thereby achieving powerful driving of the first wheel 11, and changing the power direction from the first motor gear 211 to the first output gear 311.

And when specifically provided, the fifth transmission gear 312 and the sixth transmission gear 313 are arranged at intervals in the lateral direction of the vehicle, and the fifth transmission gear 312, the sixth transmission gear 313 are arranged between the first motor gear 211 and the first output gear 311 in the longitudinal direction of the vehicle, so as to reasonably utilize the space of the vehicle in the longitudinal direction, avoiding excessively compact lateral installation space of the vehicle.

In some embodiments, the power transmission system 100 further includes a seventh transmission gear 321 and an eighth transmission gear 322, the seventh transmission gear 321 and the eighth transmission gear 322 are coaxially disposed, the second motor 22 is connected with the second motor gear 221, the first differential 5 may be provided with the first differential gear 54, the seventh transmission gear 321 is meshed with the second motor gear 221, and the eighth transmission gear 322 is meshed with the first differential gear 54.

Specifically, as shown in fig. 1, the second motor gear 221 is disposed on a motor shaft of the second motor 22 and is fixedly connected with the motor shaft, so that the second motor 22 can drive the second motor gear 221 to rotate, and meanwhile, the seventh transmission gear 321 and the eighth transmission gear 322 are in power connection between the second motor gear 221 and the first differential gear 54, so that the second motor 22 can drive the first differential housing 55 to rotate, and the second axle 32 and the first axle 31 can be driven to rotate.

It should be noted that, the seventh transmission gear 321 and the eighth transmission gear 322 have different gear sizes, and as shown in fig. 1, the outer diameter of the seventh transmission gear 321 is larger than the outer diameter of the eighth transmission gear 322, so that after the second motor gear 221 performs power transmission through the seventh transmission gear 321 and the eighth transmission gear 322, output with a certain speed ratio can be achieved, thereby achieving powerful driving of the second wheel 12, and changing the power direction from the second motor gear 221 to the first differential gear 54.

And when specifically provided, the seventh transmission gear 321 and the eighth transmission gear 322 are arranged at intervals in the lateral direction of the vehicle, and the seventh transmission gear 321 and the eighth transmission gear 322 are arranged between the second motor gear 221 and the first differential gear 54 in the longitudinal direction of the vehicle, so as to reasonably utilize the space of the vehicle in the longitudinal direction, avoiding excessively compact lateral installation space of the vehicle.

And/or the axis of the first wheel axle 31 coincides with the axis of the second wheel axle 32, i.e. the first wheel axle 31 and the second wheel axle 32 are arranged facing each other in the lateral direction of the vehicle, in other words, one of the first wheel axle 31 and the second wheel axle 32 may be arranged as a left front wheel axle, the other may be arranged as a right front wheel axle, or one of the first wheel axle 31 and the second wheel axle 32 may be arranged as a left rear wheel axle, the other may be arranged as a right rear wheel 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.

When the differential lock is specifically implemented, the differential lock can be arranged on the front wheel axle and the rear wheel axle, the differential lock can be arranged on the front wheel axle only, or the differential lock can be arranged on the rear wheel axle only, and the differential lock can not be arranged on the front wheel axle and the rear wheel axle, so that different configuration requirements are met.

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

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 24 to realize power generation, meanwhile, the second motor 22 can be used for driving the front left wheel to rotate, and can also be used for driving the front left wheel and the front right wheel to rotate simultaneously, the third motor 23 is used for driving the rear right wheel to rotate, and can be used for driving the rear left wheel to rotate simultaneously, so that four wheels can be driven to rotate through three motors, the structure is simple, the setting cost can be reduced, and the weight of the vehicle can be improved.

And/or, the range extender 24 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, as shown in fig. 1, the first axle 31 and the second axle 32 are both front axles, the first axle 31 is a right front axle, the second axle 32 is a left front axle, and simultaneously, the third axle 33 and the fourth axle 34 are both rear axles, the third axle 33 is a right rear axle, and the fourth axle 34 is a left rear axle.

Thus, the range extender 24 and the first motor 21 are both positioned in the front region 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 parts between the range extender 24 and the first motor 21 can be reduced, so that the arrangement of efficient 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 24 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.

And/or, as shown in fig. 1, the third motor 23 is located between the front axle and the rear axle, in other words, the third motor 23 is located in the middle region of the vehicle, which is advantageous not only in reducing the space between the third motor 23 and the third axle 33 and the fourth axle 34, but also in making better use of the middle space of the vehicle, and it is understood that, in the longitudinal direction of the vehicle, the longitudinal length of the middle space is greater than the space of the front region and greater than the space of the rear region, so that the main components of the power transmission system 100 can utilize the middle space of the vehicle more, the compactness of the respective parts of the vehicle is relatively balanced, and a reasonable arrangement of the positions of the respective components is achieved.

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 above is provided.

According to the vehicle provided by the embodiment of the utility model, the range extender 24 is arranged, and the third motor 23 is respectively and simultaneously connected with the third wheel 13 and the fourth wheel 14 in a power mode, so that the arrangement of the independent range extender motor is reduced, and when the first motor 21 generates electricity, the effective driving of each wheel can be ensured, the arrangement cost is reduced, the dynamic performance of the vehicle in the electricity generation process is ensured, the weight of the vehicle is improved, the use effect is better, and the application range is wider.

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, a second wheel, a third wheel, and a fourth wheel;

The first motor is arranged to be in power connection with the first wheel or the range extender;

A second motor in power connection with the second wheel or simultaneously in power connection with the first wheel and the second wheel when the first motor is in power connection with the range extender;

And the third motor is respectively and simultaneously connected with the third wheel and the fourth wheel in a power mode.

2. The drivetrain of claim 1, further comprising a second differential, wherein the third wheel is coupled to a third axle, the fourth wheel is coupled to a fourth axle, one side axle of the second differential is coupled to the third axle, and the other side axle of the second differential is coupled to the fourth axle, and the third motor is in powered connection with the second differential.

3. The powertrain system of claim 2, further comprising a first input shaft having a first and second coaxial gear sets disposed above it, the first input shaft being in power connection with the second differential, the first and second coaxial gear sets being in power connection with the third motor, respectively;

The first input shaft is provided with a fourth synchronizer used for dynamically connecting the first input shaft with the first coaxial gear set or the second coaxial gear set.

4. A drivetrain according to claim 3, wherein the first coaxial gearset comprises first and second coaxially disposed drive gears, the second coaxial gearset comprises third and fourth coaxially disposed drive gears, the third motor having third and fourth motor gears connected thereto;

The fourth synchronizer is used for selectively and dynamically connecting the first transmission gear or the third transmission gear with the first input shaft, the third motor gear is meshed with the second transmission gear, and the fourth motor gear is meshed with the fourth transmission gear.

5. A drivetrain according to claim 3, wherein the second differential is provided with a second differential gear, the first input shaft being provided with a first connecting gear, the first connecting gear meshing with the second differential gear.

6. The drivetrain of any one of claims 1-5, further comprising a first differential having a first differential housing, the first wheel having a first axle connected thereto, the second wheel having a second axle connected thereto, one side axle of the first differential being selectively connected to the first axle and the other side axle of the first differential being connected to the second axle;

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

7. The powertrain system of claim 6, further comprising a first synchronizer for selectively drivingly connecting the first electric machine with the range extender, a second synchronizer for selectively drivingly connecting the first electric machine with the first axle and for selectively locking the first axle with one side axle of the first differential, and a third synchronizer for selectively locking the first differential case with one side axle of the first differential.

8. The powertrain system of claim 7, wherein the first motor is coupled to a first motor gear, wherein an output shaft sleeve of the range extender is provided with a range extender Cheng Chilun, wherein the range extender gear is meshed with the first motor gear, and wherein the first synchronizer is used for selectively coupling or decoupling the range extender gear to or from the output shaft;

And/or the first motor is connected with a first motor gear, the first wheel shaft is provided with a first output gear, the first output gear is in power connection with the first motor gear, and the second synchronizer is used for selectively combining or disconnecting the first output gear with the first wheel shaft;

And/or the axis of the first wheel axle is coincident with the axis of the second wheel axle, and the first motor and the second motor are respectively positioned at the front side and the rear side of the second wheel axle.

9. The powertrain system of any one of claims 1-5, wherein the first and second wheels are each configured as a front wheel and the third and fourth wheels are each configured as a rear wheel;

And/or, the range extender and the first motor are both positioned in front of the front wheel axle, and the second motor is positioned between the front wheel axle and the rear wheel axle;

and/or the third motor is positioned between the front wheel axle and the rear wheel axle.

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