CN105262270A - Motor for vehicle driving and vehicle using motor for vehicle driving - Google Patents

Abstract

The invention provides a motor for driving a vehicle, comprising: a motor casing, which forms an accommodating cavity inside; a stator; a rotor; a rotor shaft, the rotor is configured to provide power output through the rotation of the rotor shaft; a breathing device located on the motor casing , communicating with the accommodation cavity defined by the motor casing through an air channel interface, and when the air in the accommodation cavity is heated or cooled and the pressure changes, the internal space of the breathing apparatus changes adaptively. The invention also relates to an in-wheel motor drive assembly for a distributed drive vehicle. Utilizing the vehicle driving motor of the present invention can prevent water from entering into the motor to the greatest extent after the motor is heated and cooled to form a negative pressure, causing water accumulation and damage to the motor.

Description

Motor for driving a vehicle and vehicle using the motor for driving a vehicle

technical field

The invention relates to the field of vehicles, in particular to a motor for driving a vehicle and a vehicle using the motor for driving a vehicle.

Background technique

In response to the global warming trend and the non-renewability of fossil energy, new energy vehicle technologies that use rotating electric machines as the driving source of vehicles are constantly being developed and developed. For example, in front-wheel drive, rear-wheel drive, and four-wheel drive vehicles that use only rotating electrical machines, or engines and rotating electrical machines as main power, there are mechanical connections between the rotating electrical machine and the engine and transmission, or between the engine and the transmission. Or the case of installing a rotating electric machine in a transmission.

In such a vehicle, the rotating motor used for driving the vehicle requires miniaturization and high output. The motor designed in this way needs to quickly release the heat of the motor during operation, so the heat dissipation of the motor has become an important issue. At the same time, when the motor is running When the heat is released rapidly, the internal pressure will expand rapidly, and the air in the internal cavity will be discharged, and when it is rapidly cooled by water, the internal pressure will drop sharply. Such a process can easily lead to negative pressure inside the motor and suction Once water is sucked in, it is not easy to discharge, and it is easy to cause water accumulation and damage to the motor.

Contents of the invention

In view of the above problems, the present invention proposes a motor for driving a vehicle that can self-adaptively balance the pressure level inside the motor.

Another object of the present invention is to provide a vehicle using the vehicle drive motor.

The above objects of the invention are achieved by the technical features of the independent claims, which the dependent claims develop in an alternative or advantageous manner.

In order to achieve the above object, the present invention proposes a motor for driving a vehicle, comprising:

a motor casing, the interior of which forms an accommodating chamber;

stator;

rotor;

a rotor shaft, the rotor is configured to provide power output through the rotation of the rotor shaft;

The breathing device located on the motor casing communicates with the accommodation chamber defined by the motor casing through an air channel interface, and when the air in the accommodation chamber is heated or cooled and the pressure changes, the internal space of the breathing apparatus is self-adaptive. change.

In a further example, the motor further includes a bracket for supporting the breathing device, which is fixed on the outside of the motor casing, and the breathing device is located in the inner space of the bracket.

In a further example, the motor further includes a shield fixed on the outside of the motor casing, and the breathing device is located in the inner space of the shield.

In a further example, at least one side of the shield is provided with a through hole, communicating the inside of the shield with the outside space.

In a further example, the breathing device is configured as an air bag, which is fixed outside the motor housing and communicates with the accommodation cavity defined by the motor housing through the air channel interface.

In a further embodiment, the breathing apparatus is configured as a sleeve assembly, the sleeve assembly has a sleeve body and an elastic mechanism located in the sleeve body, and the sleeve body is connected to the electrical outlet through the air channel interface. The accommodating cavity defined by the casing is communicated, and the elastic mechanism is arranged between the sleeve body and the outer surface of the motor casing, and the sleeve assembly is arranged so that the air in the accommodating cavity in the motor casing is heated Or the internal space of the sleeve body can be adaptively changed when the pressure changes when it is cold.

In a further embodiment, the elastic mechanism is configured as a spring.

According to the improvement of the present invention, a hub motor drive assembly for a distributed drive vehicle is also proposed, the hub motor drive assembly includes:

The motor has a motor casing, a stator, a rotor, and a rotor shaft. A housing cavity is formed inside the motor casing, and the rotor is configured to provide power output through the rotation of the rotor shaft;

a motor driver configured to drive the motor to run;

The brake has an action part and a brake disc, the brake disc is connected to the rotor shaft of the aforementioned motor;

a speed change mechanism, the input end of which is connected to the aforementioned rotor shaft;

a torque output shaft, one end of which is configured to be connected to the output end of the transmission mechanism, and the other end is configured to be connected to a wheel hub of the vehicle to transmit torque;

Wherein, the brake disc of the brake is arranged coaxially with the rotor of the motor, and the torque generated by the brake or the motor acts on the rotor shaft, and the torque is changed by the transmission mechanism and then output to the torque output shaft, and the torque is transferred by the torque output shaft applied to the hub of the vehicle;

The in-wheel motor drive assembly also includes:

The breathing device located on the motor casing communicates with the accommodation chamber defined by the motor casing through an air channel interface, and when the air in the accommodation chamber is heated or cooled and the pressure changes, the internal space of the breathing apparatus is self-adaptive. change.

In a further embodiment, the hub motor drive assembly further includes:

A stand and/or shield for supporting the breathing apparatus.

In a further embodiment, the breathing apparatus is configured as:

The inner space defined by the air bag or the sleeve assembly can be adaptively changed according to the air pressure state in the accommodating cavity of the motor casing.

In a further embodiment, the brake disc is provided with a plurality of vanes arranged in a shape capable of forming axial air flow when the brake disc rotates.

In a further embodiment, the plurality of blades are uniformly arranged between the rotating shaft fixing part and the braked part.

According to the present disclosure, a distributed drive vehicle is also proposed, including the aforementioned motor for driving the vehicle.

According to the present disclosure, a distributed drive vehicle is also provided, including the aforementioned in-wheel motor drive assembly.

It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent. Additionally, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description when taken in conjunction with the accompanying drawings. Other additional aspects of the invention, such as the features and/or advantages of the exemplary embodiments, will be apparent from the description below, or learned by practice of specific embodiments in accordance with the teachings of the invention.

Description of drawings

The figures are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like reference numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of the various aspects of the invention will now be described by way of example with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an in-wheel motor drive assembly for a distributed drive vehicle according to some embodiments of the present invention.

Fig. 2 is a schematic structural view of a motor for driving a vehicle according to some embodiments of the present invention.

Fig. 3 is a schematic structural view of a motor for driving a vehicle according to other embodiments of the present invention.

Fig. 4 is a schematic structural view of a brake disc according to some embodiments of the present invention.

detailed description

In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

Distributed drive vehicles, especially electric drive vehicles, use distributed drive methods to simplify the power transmission path and facilitate the realization of electronic, intelligent and active chassis systems. Each drive wheel of the distributed drive electric vehicle has a set of drive motor components, and each set of drive motor components is independently controlled and driven, and its drive motor components are directly installed in the drive wheel or near the drive wheel, with a compact structure and a transmission chain. Short, efficient transmission.

Hub motors are the key to enabling distributed drives. When the vehicle is running or braking normally, the motor will heat up. Excessive stability will lead to a decrease in motor performance, energy efficiency, and life attenuation, especially for vehicle-mounted motors. At the same time, when braking, the brake disc will generate heat due to friction A large amount of heat, so distributed drive vehicles, especially the heat dissipation of the drive motor and/or brake disc of the electric drive vehicle, is the purpose and gist of the brake disc solution and the in-wheel motor drive assembly solution proposed by the present invention .

At the same time, in the following content of the present disclosure, a rotating motor with a breathing device is proposed for the problem that the motor generates heat and discharges air during operation, and when it is cold, it is easy to generate negative pressure to inhale water, which may easily cause water accumulation and damage to the motor. , and an in-wheel motor drive unit using such a rotating electrical machine as a driving source, and a vehicle having such an in-wheel motor drive unit, are also the gist and purpose of the present invention.

As shown in FIG. 1 , according to an embodiment of the present invention, a hub motor drive assembly 100 for driving and braking a vehicle is proposed, which is an integrated motor assembly, by combining the motor output shaft (rotor shaft) with The braked part of the brake (such as the brake disc) is connected and arranged coaxially. The output shaft of the motor is connected to the input end of the speed change mechanism (generally a speed reduction mechanism). The torque generated by the motor and the brake acts on the power output shaft together. Then provide torque to the outside. In this way, the torque of the brake disc or the motor rotor enters the input end of the speed change mechanism through the output shaft of the motor, and after the speed change (such as gear shifting), the torque is output from the output end of the speed change mechanism to the torque output shaft, so as to provide driving torque to make the vehicle move. Or the braking torque causes the vehicle to brake.

In a further embodiment, through the special design of the brake disc, when the brake disc rotates with the motor, the axial air enters the motor to cool the motor, so as to achieve the simultaneous cooling effect on the half body of the brake disc and the driving motor.

In a further embodiment, the rotating motor is equipped with a breathing device to balance its internal air pressure balance after being heated and cooled, and the air pressure is adaptively adjusted to avoid water accumulation and damage caused by negative pressure of the motor.

Therefore, when the traction and braking of vehicles (such as distributed drive vehicles) are realized by using the in-wheel motor drive assembly, especially when new energy vehicles (such as pure electric vehicles, hybrid electric vehicles, fuel cell vehicles, etc.), driving Or only need to apply a relatively small pedal force (for example, applied to the brake pedal), through such as cable, hydraulic, pneumatic or electromagnetic means to push the braked part of the brake, such as the brake disc, through the transmission mechanism function, a greater braking force can be obtained. In some vehicles using the embodiments of the present invention, a relatively large braking force can be obtained with a small brake disc, and even the mechanism for braking booster on the existing vehicle can be canceled, and at the same time, effective Heat dissipation and avoid negative pressure water.

The in-wheel motor drive assembly described in the following embodiments of the present invention, as an integrated motor assembly, can especially be used in distributed drive electric vehicles or hybrid vehicles.

Examples of various aspects of the in-wheel motor driving assembly of the embodiment of the present invention will be described in more detail below with reference to the illustrations.

As shown in Figure 1, according to some embodiments of the present invention, a motor assembly 100 for driving and braking a vehicle includes: a motor with a stator 102, a rotor 103 and a rotor shaft 104, a brake (including a brake disc 105, Action part 106), torque output shaft 108, speed change mechanism 110.

The aforementioned motor also has a motor housing 101 for accommodating the stator 102 , rotor 103 and rotor shaft 104 . The rotor shaft 104 is accommodated at least partially within the motor housing 101 . The rotor 103 is configured to provide a torque output through rotation of a rotor shaft 104 .

For example, the motor receives a control signal from the ECU of the vehicle, so that the motor rotates to output torque to drive the vehicle forward or backward.

Referring to FIG. 1 , the brake disc 105 is connected to the rotor shaft 104 of the aforementioned electric motor.

The action part of the brake of the vehicle, that is, the brake execution part, such as the brake caliper 106 of the disc brake mechanism, cooperates with the brake disc 105 to realize the braking of the vehicle.

When the vehicle is braked, the brake actuator (for example, driven by the brake boosting/boosting mechanism) acts to abut against the brake disc 105 , and generates braking torque through friction to brake the vehicle.

A vehicle generally has a plurality of such brakes, for example corresponding to the number of wheel hubs of the vehicle.

Referring to FIG. 1 , the speed change mechanism 110 is used for speed change, and its input end is connected with the aforementioned rotor shaft 104 .

The torque from the motor rotor 103 or from the brake disc 105 of the brake jointly acts on the rotor shaft 104 , and then is output to the torque output shaft 108 after being shifted by the speed change mechanism 110 .

The torque output shaft 108 is configured to be connected between the output end of the speed change mechanism 110 and the hub of the vehicle, so as to transmit torque and realize driving or braking of the vehicle.

As shown in FIG. 1 , one end of the torque output shaft 108 is connected to the output end of the transmission mechanism 110 , and the other end can be connected to the wheel hub of the vehicle.

In this way, by coaxially disposing the brake disc 105 of the brake and the rotor shaft 104 of the motor, the torque generated by the brake or the motor acts on the rotor shaft 104 and is output through the transmission mechanism for braking or driving the vehicle.

It should be understood that, in some other embodiments, one end of the torque output shaft 108 is connected to the output end of the transmission mechanism 110, and the other end may be connected to the transmission shaft of the chassis system of the vehicle, so as to transmit the torque and realize the transmission of the torque to the vehicle. driving or braking.

As shown in Fig. 2, Fig. 3 and Fig. 4, the aforementioned brake disc 105 is provided with a plurality of vanes, and these vanes are arranged in a shape that can form an axial air flow when the brake disc 105 rotates. When the moving disc 105 rotates with the rotation of the motor, the generated axial air will directly cool the motor (and also cool the brake disc itself), making full use of the rotational energy of the motor to cool itself.

The brake disc of the brake is arranged coaxially with the rotor of the motor, and is connected to the wheel through the reduction mechanism, so that the driving torque output by the motor or the braking torque from the brake disc can be transmitted to the wheel through the speed change mechanism (as mentioned above through Torque output shaft) to reduce the braking force required for vehicle braking and reduce the requirements for the booster device, especially on new energy vehicles, and even cancel the design of the brake booster device. Therefore, the integration degree of the hub motor drive unit is greatly improved, and the volume and weight are greatly reduced. At the same time, due to the specially designed blade structure of the brake disc, the brake disc can continuously generate axial air flow to cool the motor and/or brake disc during normal driving or braking of the vehicle, improving the efficiency of the motor and longevity.

In a preferred example, as shown in FIG. 2 and FIG. 3 , the aforementioned in-wheel motor drive assembly 100 further includes a breathing device 150 located on the motor housing 101 . The breathing device communicates with the housing cavity defined by the motor casing 101 through an air passage interface 140, and when the air in the housing cavity is heated or cooled and the pressure changes, the internal space of the breathing device 150 changes adaptively. .

In this way, when the motor generates heat during operation, the gas inside it expands after being heated, and when the internal pressure of the accommodation chamber in the motor casing increases, its internal space expands to discharge gas to the outside. Through the adaptive change of the breathing device 150 (inner space changes large) to adapt to the change of air pressure inside the motor casing, and at the same time, after the motor cools down, the internal air pressure decreases, through the adaptive change of the breathing device 150 (the internal space shrinks) to adapt to the inside of the motor casing The air pressure changes to prevent water from entering the motor.

As shown in FIG. 2 , the aforementioned breathing device 150 is configured as an airbag, which is fixed outside the motor casing 101 and communicates with the accommodating chamber defined by the motor casing through the air channel interface 140 .

As shown in Figure 3, in some other embodiments, the breathing apparatus 150 is configured as a sleeve assembly, the sleeve assembly has a sleeve body 151 and an elastic mechanism 152 located in the sleeve body, the sleeve body 151 and The air channel interface 140 communicates with the housing cavity defined by the motor housing, and the elastic mechanism 152 is arranged between the sleeve body 151 and the outer surface of the motor housing 101, and the sleeve assembly is arranged to The inner space of the sleeve body 151 can be adaptively changed when the air in the accommodating cavity in the motor housing is heated or cooled and its pressure changes.

In the example shown in FIG. 3 , the aforementioned elastic mechanism 152 is realized by springs, and an example with two springs is exemplarily shown in the figure. It should be understood that the number of springs can also be adjusted according to actual conditions, and is not limited to number of icons.

In some examples, a bracket for supporting the breathing device 150 is provided outside the motor housing 101 and fixed on the outside of the motor housing, and the breathing device 150 is located in the inner space of the bracket.

As shown in FIG. 2 and FIG. 3 , in some examples, a shield 160 may be arranged outside the motor casing 101 and fixed on the outside of the motor casing 101, and the breathing device 150 is located in the inner space of the shield middle.

In some other embodiments, the outside of the motor housing 101 can be provided with the bracket and the shield at the same time, the bracket is nested in the shield, or the shield is nested in the bracket, so as to realize the protection of the breathing device 150 support.

As shown in FIG. 2 and FIG. 3 , in an example where a shield 160 is provided, at least one side of the shield 160 is provided with a through hole 161 , communicating the inside of the shield with the outside space.

As shown in FIG. 4 , as an exemplary structure, the aforementioned brake disc 105 includes a braked portion 1051 , a rotating shaft fixing portion 1052 , and a device that connects and fixes the two between the braked portion 1051 and the rotating shaft fixing portion 1052 . A plurality of blades 1053 .

As shown in FIG. 4 , the braked portion 1051 is configured in a ring shape, and the braked portion 1051 is configured to generate a braking force when in contact with the actuating portion 106 of the brake.

The rotating shaft fixing part 1052 is configured to be fixed to the rotating shaft (such as the aforementioned rotor shaft 104 ) so as to transmit the rotating motion to rotate the brake disc 105 .

A plurality of vanes 1053 are arranged between the braked part 1051 and the shaft fixing part 1052 and connect them. These vanes are arranged in a shape that can form axial air flow when the brake disc 105 rotates.

In a preferred example, the positions of the plurality of vanes 1053 in the direction of the working end surfaces on both sides of the annular braked portion 1051 do not exceed the working end surfaces on both sides of the annular braked portion.

In some examples, the plurality of blades 1053 are uniformly arranged between the shaft fixing portion 1052 and the braked portion 1051 .

Referring to FIG. 4 , the rotating shaft fixing portion 1052 is configured in a ring shape, and the center positions of the rotating shaft fixing portion 1052 and the ring-shaped braked portion 1051 on its cross section coincide with each other.

In some other examples, the shaft fixing portion 1052 is configured as a square shape with a central opening.

Referring to FIG. 1 , in some examples, the aforementioned transmission mechanism 110 is configured as a reduction mechanism, such as a planetary gear reduction mechanism.

Preferably, as shown in FIG. 1 , the aforementioned planetary gear reduction mechanism has: an input end constituted by a sun gear 110a, and an output end constituted by a planetary carrier 110c and a planetary gear 110b.

As shown in FIG. 1 , the input formed by a sun gear 110 a is connected to the rotor shaft 104 of the electric machine. An output end constituted by the carrier 110c and the planetary gear 110b is connected to one end of the torque output shaft 108 .

In this way, the torque output by the motor will be transmitted to the torque output shaft through the transmission mechanism 110, and then transmitted to the wheel hub of the vehicle.

Simultaneously, because the brake disc 105 of the brake of the vehicle is set coaxially with the rotor shaft 104 of the aforementioned motor, the braking torque transmitted to the rotor shaft 104 by the brake disc 105 will be transmitted to the torque output shaft through the speed change mechanism 110, And then transmitted to the wheel hub of the vehicle.

As shown in FIG. 1, in the example of using a planetary gear reduction mechanism, the rotor shaft 104 of the aforementioned motor, the brake disc 105, and the planetary gear reduction mechanism 110 are coaxial, and their axes are on the same axis as the torque output shaft 108. axial direction, or roughly in the same axial direction.

In some other embodiments, the above-mentioned transmission mechanism 110 can also be configured as a fixed axis gear reduction mechanism, such as a two-stage gear reduction mechanism, which is configured to receive the motor output torque from the motor shaft or the braking force from the brake disc. After the torque is changed through gears (such as two-stage gear reduction), the motor output torque or braking torque is transmitted to the torque output shaft, and further transmitted to the wheel hub of the vehicle to realize the driving or braking of the wheels of the vehicle.

Referring to Fig. 1, when the driver's desired braking effect (braking torque requirement to achieve the driver's desired braking effect) is constant, using the aforementioned motor assembly 100, it can be achieved with a smaller brake disc. Braking torque demand; and if use larger brake disk, when the driver's desired braking effect (reaching the driver's desired braking torque requirement of the braking effect) is certain, utilize the motor drive assembly of the present invention 100, only a smaller application of pedal force (to the brake pedal) is required to achieve the braking torque demand.

In some embodiments, the brake disc 105 of the brake mechanism is located between the motor and the transmission mechanism 110 .

In some other embodiments, the aforementioned motor is located between the transmission mechanism 110 and the brake disc 105 of the braking mechanism.

As shown in FIG. 1 , the speed change mechanism 110 is accommodated in the motor housing 101 .

In some embodiments, at least one of the transmission mechanism 110 and the brake disc 105 of the braking mechanism is accommodated in the motor housing 101 .

As shown in FIG. 1 , the motor housing 110 is also provided with a port 120 that can be closed and communicated with the inside of the motor housing 101. This port is used as a lubricating oil port for allowing lubricating oil to enter the motor housing and for feeding Lubricating oil is input and output inside the reduction mechanism and/or motor.

In some examples, one or more bearings ( 112 , 116 ) may also be disposed within motor housing 110 for supporting rotor shaft 104 . As shown in FIG. 1 , the first bearing 112 and the second bearing 116 are respectively provided at the axial ends of the stator 102 and the rotor 103 inside the motor housing 110 to support the rotor shaft 104 to ensure that the motor and the brake disc 105 The provided torque can be smoothly delivered to the transmission mechanism along the axis of the motor, preventing the occurrence of shaking of the entire motor drive assembly and other conditions affecting the torque output characteristics.

In some examples, as shown in FIG. 1 , the entire motor drive assembly 100 is further provided with a third bearing 114 for supporting the torque output shaft 108 .

In other examples, the aforementioned third bearing 114 for supporting the torque output shaft 108 may also be disposed outside the motor casing 101 .

In combination with one or more embodiments illustrated in FIG. 1 and described above, the present disclosure also proposes a method for driving or braking a vehicle, the method including:

The torque produced by the brake of the vehicle or the rotor 103 of the motor acts jointly on the rotor shaft 104 of the aforementioned motor, wherein the brake disc 105 (such as a brake disc or brake drum) of the aforementioned brake and the rotor shaft 104 of the motor coaxial configuration;

transmit torque through the rotor shaft 104 to a speed change mechanism 110;

The final output torque of the transmission mechanism 110 acts on the wheel hub of the vehicle to drive or brake the vehicle.

As described above, the transmission mechanism 110 used in this method is preferably a reduction mechanism, which amplifies the torque transmitted by the rotor shaft and then acts on the hub of the vehicle.

In some more preferred examples, the reduction mechanism used in the method is particularly selected as a planetary gear reduction mechanism, through which the torque transmitted by the rotor shaft is amplified and then acts on the wheel hub of the vehicle.

In some examples, the aforementioned transmission mechanism 110 has one or more reduction mechanisms for amplifying the torque transmitted to the rotor shaft. That is to say, the torque transmitted via the rotor shaft 104 can be amplified through at least one, or even two or more reduction mechanisms, and the final output torque is transmitted to the wheel hub of the vehicle through the torque output shaft 108, realizing driving or braking.

According to the present disclosure, a distributed drive vehicle is also proposed, including the aforementioned motor for driving the vehicle.

According to the present disclosure, a distributed drive vehicle is also provided, including the aforementioned in-wheel motor drive assembly.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the claims.

Claims (11)

1. a vehicle traction motor, is characterized in that, comprising:

Motor casing, its inner formation container cavity;

Stator;

Rotor;

Armature spindle, described rotor is set up provides Power output by armature spindle rotation;

Be positioned at the respiration apparatus on motor casing, the container cavity defined by an air duct interface and motor casing is communicated with, and air heats in described container cavity or when meeting the change of cold generation pressure, the inner space of this respiration apparatus changes adaptively.

2. according to claim a kind of vehicle traction motor, is characterized in that, described motor also comprise one for the protection of and/or support guard shield and/or the support of described respiration apparatus, be fixed on the outside of described motor casing.

3. according to claim 1 and 2 kind of vehicle traction motor, is characterized in that, described respiration apparatus is configured to an air bag, and it is fixed on the outside of described motor casing and is communicated with the container cavity that motor casing defines by described air duct interface.

4. according to claim 1 and 2 kind of vehicle traction motor, it is characterized in that, described respiration apparatus is configured to a sleeve assembly, this sleeve assembly possesses a sleeve body and is positioned at the elastic mechanism of sleeve body, this sleeve body is communicated with the container cavity that motor casing defines with by described air duct interface, and described elastic mechanism is arranged between sleeve body and motor casing, this sleeve assembly can make the inner space of its sleeve body change adaptively when being provided in the air heats in the container cavity in described motor casing or meeting the change of cold generation pressure.

5. for an In-wheel motor driving assembly for distributed driving vehicle, it is characterized in that, this In-wheel motor driving assembly comprises:

Motor, has motor casing, stator, rotor and armature spindle, and motor casing inside forms a container cavity, and rotor is set up provides Power output by armature spindle rotation;

Motor driver, is arranged for and drives described motor to run;

Brake, has operating member and brake disc, and this brake disc is connected with the armature spindle of aforementioned motor;

Gear, its input is connected with foregoing rotor axle;

Torque output shaft, its one end is configured to the output being connected to described gear, and the other end is arranged for the wheel hub being connected to vehicle, with transmitting torque;

Wherein, the brake disc of described brake and the rotor coaxial of motor configure, the moment of torsion that brake or motor produce all acts on armature spindle, and outputs to torque output shaft after carrying out change in torque by gear, is applied torsion moment to the wheel hub of vehicle by torque output shaft;

This In-wheel motor driving assembly also comprises:

Be positioned at the respiration apparatus on motor casing, the container cavity defined by an air duct interface and motor casing is communicated with, and air heats in described container cavity or when meeting the change of cold generation pressure, the inner space of this respiration apparatus changes adaptively.

6. the In-wheel motor driving assembly for distributed driving vehicle according to claim 5, is characterized in that, described In-wheel motor driving assembly also comprises:

Support and/or guard shield, install the outside with described motor casing, for supporting described respiration apparatus.

7. the In-wheel motor driving assembly for distributed driving vehicle according to claim 5, it is characterized in that, described respiration apparatus is configured to:

Air bag or sleeve assembly, its inner space defined can change adaptively along with the atmospheric pressure state of the air in the container cavity of described motor casing.

8. the In-wheel motor driving assembly for distributed driving vehicle according to claim 5, is characterized in that, described brake disc is provided with plurality of vanes, and these blades are configured to the shaped formation that can form axial air flowing when brake disc rotates.

9. the In-wheel motor driving assembly for distributed driving vehicle according to claim 8, is characterized in that, described plurality of vanes is at rotating shaft fixed part and be braked between portion evenly distributed.

10. a vehicle for distributed driving, is characterized in that, comprises the vehicle traction motor described in aforementioned claim 1-6.

The vehicle of 11. 1 kinds of distributed drivings, is characterized in that, comprises the In-wheel motor driving assembly described in aforementioned claim 7-9.