CN213676349U

CN213676349U - Wheel carrier, electric wheel, automobile chassis and new energy automobile

Info

Publication number: CN213676349U
Application number: CN202022725243.5U
Authority: CN
Inventors: 侯之超; 罗荣康; 吴佩宝
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-13
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a wheel carrier, including first collar, second collar and supporting part. The first mounting ring is matched with a rim in the electric vehicle wheel, and the first mounting ring can be rotatably arranged on the rim. The second mounting ring is fixedly arranged at one end of the first mounting ring in the axial direction, the outer diameter of the second mounting ring is smaller than that of the first mounting ring, the second mounting ring and the first mounting ring are concentrically arranged, the second mounting ring is matched with a stator of a motor in the electric wheel, and the second mounting ring is used for fixedly mounting the stator of the motor. The supporting part is fixed to be set up in first mounting ring, the supporting part with the suspension adaptation in the car, the supporting part can be connected with the suspension in the car. The utility model discloses still relate to electric wheel, vehicle chassis and the new energy automobile including above-mentioned wheel carrier. Above-mentioned wheel carrier, electric wheel, vehicle chassis and new energy automobile, second collar fixed set up in first collar along axial one end, realized convenient installation of electric motor car in-wheel motor and with the convenient connection of suspension.

Description

Wheel carrier, electric wheel, automobile chassis and new energy automobile

Technical Field

The utility model relates to an automobile structure technical field especially relates to wheel carrier, electric wheel, vehicle chassis and new energy automobile.

Background

With the continuous progress of the technology, new energy automobiles gradually enter the lives of people and are popularized. Different from traditional auto wheels, the electric wheel in the new energy automobile is a novel driving technology, and the motor is directly arranged in the wheel to be driven. The weight of the transmission system is greatly reduced, the light weight of the automobile is facilitated, and the design space of the automobile body is expanded. In addition, the transmission chain is short, the transmission efficiency is high, and the response of the driving force is faster. In addition, four wheels can be independently driven and controlled, so that the dynamic performance of the automobile is greatly improved, and the dynamic property and the safety of the automobile are improved. However, the space in the wheel is limited, and the space in the wheel is further reduced after the motor is installed, so that the connection between the wheel and the automobile suspension is greatly limited.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a wheel carrier, an electric wheel, an automobile chassis and a new energy automobile which are convenient for mounting a motor and a suspension, aiming at the problem that the conventional electric wheel is difficult to connect the suspension after the motor is mounted.

A wheel carriage comprising:

the first mounting ring is matched with a rim in the electric wheel and can be rotatably arranged on the rim;

the second mounting ring is fixedly arranged at one end of the first mounting ring along the axial direction, the outer diameter of the second mounting ring is smaller than that of the first mounting ring, the second mounting ring and the first mounting ring are concentrically arranged, the second mounting ring is matched with a stator of a motor in an electric wheel, and the second mounting ring is used for fixedly mounting the stator of the motor;

and the supporting part is fixedly arranged in the first mounting ring, is matched with a suspension in an automobile and can be connected with the suspension in the automobile.

In one embodiment, the supporting portion includes a supporting block and a plurality of supporting arms, one ends of the supporting arms are respectively fixedly connected with the supporting block, and the other ends of the supporting arms are respectively fixedly connected with the first mounting ring; the supporting block is located at the rotation center of the first mounting ring, the supporting block is matched with a suspension in an automobile, and the supporting block can be connected with the suspension in the automobile.

In one embodiment, a first connecting column and a second connecting column are arranged on the supporting block, the first connecting column and the second connecting column are arranged at intervals, and the first connecting column and the second connecting column extend in the direction away from the second mounting ring; the first connecting column and the second connecting column are respectively used for connecting a suspension upper strut and a suspension lower cross arm; the supporting block is of a hollow structure.

In one embodiment, at least one of the support arms is provided with a brake mounting position, the brake mounting position is used for mounting a brake caliper, and the brake mounting position is a boss, a groove and the like.

In one embodiment, at least two of the support arms are arranged in the first mounting ring in a centrosymmetric manner, and the brake mounting positions are respectively arranged on the at least two support arms arranged in the centrosymmetric manner.

An electric wheel comprising a rim, a motor and the wheel carrier of any of the above embodiments, wherein the first mounting ring is rotatably disposed on an inner ring of the rim, and the motor is disposed between the inner ring of the rim and the second mounting ring; the motor is provided with an outer rotor and an inner stator, the outer rotor is fixedly connected with the inner ring of the rim, and the inner stator is fixedly connected with the outer ring of the second mounting ring.

In one embodiment, the inner ring of the rim is provided with a mounting groove, the electric wheel further comprises a thin-wall bearing, the outer ring of the thin-wall bearing is fixedly arranged in the mounting groove, and the inner ring of the thin-wall bearing is fixedly connected with the outer periphery of the first mounting ring.

In one embodiment, the electric wheel further comprises a brake disc and at least two brake calipers, the brake disc is fixedly arranged on the inner side of the wheel rim, the at least two brake calipers are arranged on the supporting part, and the at least two brake calipers are installed with the brake disc in a matching mode; at least two brake calipers are distributed in the first mounting ring in a central symmetry mode.

In one embodiment, the motor adopts an inner hollow outer rotor structure.

In one embodiment, the electric wheel further comprises a tire, and the tire is arranged on the outer ring of the rim.

An automobile chassis comprising a suspension and a powered wheel as described in any one of the above embodiments, the suspension being connected to the support portion.

A new energy automobile comprises an automobile chassis, an electric power system and an automobile body, wherein the electric power system and the automobile body are respectively arranged on the automobile chassis; the automobile chassis is the automobile chassis in the embodiment.

Above-mentioned wheel carrier, electric wheel, vehicle chassis and new energy automobile, first collar realizes that the wheel carrier is connected with the rotation of rim in the electric wheel, and the motor is installed in coordination to the inner circle of second collar and rim, and the supporting part still is connected with the suspension fixed connection in the car when with first collar fixed connection. The second mounting ring is fixedly arranged at one end of the first mounting ring in the axial direction, the mounting space of the motor in the electric wheel and the mounting position of the suspension can be effectively separated, and then the mounting of the motor and the connection of the suspension do not interfere with each other, so that the convenient mounting of the motor in the electric wheel and the convenient connection of the suspension are realized.

Drawings

Fig. 1 is a schematic perspective view of a wheel frame according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a wheel frame according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an electric wheel according to an embodiment of the present invention;

fig. 4 is a schematic front view of an electric wheel according to an embodiment of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 4;

fig. 6 is an enlarged view of a portion of the structure of fig. 5.

Wherein: 10. an electric vehicle wheel; 100. a wheel carrier; 110. a first mounting ring; 120. a second mounting ring; 130. an annular connecting plate; 140. a support portion; 141. a support block; 142. a support arm; 143. a first connecting column; 144. a second connecting column; 145. a boss; 200. a rim; 300. a motor; 310. an inner stator; 320. an outer rotor; 400. a thin-walled bearing; 500. a brake disc; 600. a brake caliper; 700. a tire; 20. a suspension upper strut; 30. and a suspension lower cross arm.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

New energy vehicles gradually enter the public travel life with the advantages of environmental protection and low energy consumption. Different from the power assembly and the automobile chassis of the traditional automobile, the new energy automobile can directly transmit and connect a power source (motor) and wheels, so that the power transmission chain is shortened, and the transmission performance is effectively improved. Meanwhile, wheels of the new energy automobile need to be connected with the suspension, and therefore the comfort of the automobile body is improved. The assembly efficiency of the new energy automobile can be greatly influenced by the position relation among the wheels, the motor and the suspension. The utility model provides a wheel carrier convenient to at wheel facial make-up distributor and suspension, simultaneously the utility model discloses still provide electric wheel, vehicle chassis and new energy automobile including this wheel carrier.

As shown in fig. 1-2 and 5-6, an embodiment of the present invention provides a wheel carriage 100, which can realize the assembly of a motor 300 and a suspension with a spotless wheel. Specifically, the wheel frame 100 includes a first mounting ring 110, a second mounting ring 120, and a support portion 140. The first mounting ring 110 is adapted to a rim 200 of the electric vehicle wheel 10, the first mounting ring 110 can be rotatably disposed on the rim 200, and in the rotating process of the rim 200, the first mounting ring 110 only moves along with the rim 200, and the first mounting ring 110 cannot rotate along with the wheel in an angle. The second mounting ring 120 is fixedly disposed at one end of the first mounting ring 110 along the axial direction, an outer diameter of the second mounting ring 120 is smaller than an outer diameter of the first mounting ring 110, the second mounting ring 120 is concentrically disposed with the first mounting ring 110, the second mounting ring 120 is adapted to a stator of the motor 300 in the electric wheel 10, and the second mounting ring 120 is used for fixedly mounting the stator of the motor 300. It should be noted that in the motor 300 used in the present embodiment, the rotor surrounds the stator, and when the stator of the motor 300 is fixedly mounted on the second mounting ring 120, the rotor of the motor 300 is also fixedly mounted on the rim 200. When motor 300 rotates, drive rim 200 rotates synchronously. The supporting portion 140 is fixedly disposed in the first mounting ring 110, the supporting portion 140 is adapted to a suspension in an automobile, and the supporting portion 140 can be connected to the suspension in the automobile.

In the wheel frame 100, the first mounting ring 110 realizes the rotary connection of the wheel frame 100 and the rim 200 in the electric wheel 10, the second mounting ring 120 and the inner ring of the rim 200 cooperate to mount the motor 300, and the support part 140 is fixedly connected with the first mounting ring 110 and is also fixedly connected with the suspension in the automobile. The second mounting ring 120 is fixedly arranged at one end of the first mounting ring 110 in the axial direction, so that the mounting space of the motor 300 in the electric wheel 10 and the mounting position of the suspension can be effectively spaced in the axial direction, the mounting of the motor 300 and the connection of the suspension are not interfered with each other, and the convenient mounting of the motor 300 in the electric wheel 10 and the convenient connection with the suspension are realized. In this embodiment and the following embodiments, the inner and outer concepts of the inner ring and the outer ring mean that the inner and outer concepts are directed to the rotation axis relatively close to the electromotive wheel 10 and the outer concept is directed to the rotation axis relatively far from the electromotive wheel 10 along the radial direction of the electromotive wheel 10 (the first mounting ring 110 or the second mounting ring 120 may be used).

In the above embodiment, there is a difference in diameter between the first mounting ring 110 and the second mounting ring 120, and the connection between the end surface of the first mounting ring 110 and the end surface of the second mounting ring 120 may be made through a connecting plate, a connecting column, or other realizable manner. As shown in fig. 1-2, the end surfaces of the first mounting ring 110 and the second mounting ring 120 that are close to each other are connected by the annular connecting plate 130, so that an axisymmetrical stepped cross section is formed among the first mounting ring 110, the annular connecting plate 130 and the second mounting ring 120. The annular connecting plate 130 can effectively ensure the connection strength between the first mounting ring 110 and the second mounting ring 120, thereby providing necessary conditions for safe driving of the new energy automobile.

The support portion 140 is provided in the first mounting ring 110, and can be spaced from the motor 300 in the axial direction of the motored wheel 10, thereby allowing the suspension and the motor 300 to be also spaced in the axial direction of the motored wheel 10. Defining one side of the electric wheel 10 close to the installation of the suspension along the self axial direction as an inner side, and one side of the electric wheel 10 far away from the installation of the suspension along the self axial direction as an outer side; meaning that the first mounting ring 110 in the wheel carrier 100 is located inboard with respect to the second mounting ring 120, and similarly the second mounting ring 120 is located outboard with respect to the first mounting ring 110. As shown in fig. 1-2, in an embodiment of the present invention, the supporting portion 140 includes a supporting block 141 and a plurality of supporting arms 142, one end of each of the plurality of supporting arms 142 is fixedly connected to the supporting block 141, and the other end of each of the plurality of supporting arms 142 is fixedly connected to the first mounting ring 110; the supporting block 141 is located at the rotation center of the first mounting ring 110, the supporting block 141 is adapted to a suspension in the vehicle, and the supporting block 141 can be connected to the suspension in the vehicle. The supporting shoe 141 and the plurality of supporting arms 142 are matched in structural form, so that the supporting of enough strength can be provided for the installation of the suspension and the automobile body, meanwhile, the mass of the wheel carrier 100 can be effectively reduced, the unsprung mass of the new energy automobile is obviously reduced, and the comfort of the automobile body is improved.

The stable connection of the support blocks 141 to the suspension is a prerequisite for ensuring safe driving and effective damping. As shown in fig. 1 to 3, in an embodiment of the present invention, the supporting block 141 is provided with a first connecting column 143 and a second connecting column 144, the first connecting column 143 and the second connecting column 144 are spaced apart from each other, and the first connecting column 143 and the second connecting column 144 extend in a direction away from the second mounting ring 120. The first connecting column 143 and the second connecting column 144 are used to connect the suspension upper strut 20 and the suspension lower cross arm 30, respectively. In other embodiments of the present invention, the supporting block 141 can be connected to not only the macpherson suspension in the above embodiments, but also a double-arm suspension, a single-trailing-arm suspension, a torsion-beam dependent suspension, etc., and the supporting column on the supporting block 141 can be adaptively designed according to the structural form of the suspension to be connected. Further, the supporting block 141 has a hollow structure, so that the mass of the wheel carrier 100 can be further reduced while the strength of the supporting block is ensured. Meanwhile, the hollow structure can facilitate the passage of outside air flow, and is convenient for ventilation and heat dissipation of the wheel carrier 100 or the electric wheel 10.

In an embodiment of the present invention, as shown in fig. 1 to 3, at least one supporting arm 142 is provided with a brake mounting position, the brake mounting position is used for mounting the brake caliper 600, and the brake mounting position is a boss 145, a groove, or the like. The brake caliper 600 and the brake disc 500 cooperate to effectively brake the rim 200. Further, at least two supporting arms 142 are distributed in the first mounting ring 110 in a central symmetry manner, and brake mounting positions are respectively arranged on the at least two supporting arms 142 distributed in the central symmetry manner, so that annular brake torque can be formed on the rim 200, and the stability of the braking process is ensured.

Corresponding to the above embodiments, as shown in fig. 3 to 6, the present invention further provides an electric vehicle wheel 10, which includes a rim 200, a motor 300, and the wheel frame 100 described in any of the above embodiments. Wherein, the first mounting ring 110 is rotatably disposed at the inner ring of the rim 200, and the motor 300 is disposed between the inner ring of the rim 200 and the second mounting ring 120. Specifically, the motor 300 has an outer rotor 320 and an inner stator 310, the outer rotor 320 is fixedly connected to the inner ring of the rim 200, and the inner stator 310 is fixedly connected to the outer ring of the second mounting ring 120. In the electric wheel 10, the first mounting ring 110 is used for rotatably connecting the wheel carrier 100 with the rim 200 of the electric wheel 10, the second mounting ring 120 and the inner ring of the rim 200 are cooperatively used for mounting the motor 300, and the support part 140 is fixedly connected with the first mounting ring 110 and is also fixedly connected with the suspension in the automobile. The second mounting ring 120 is fixedly arranged at one end of the first mounting ring 110 in the axial direction, so that the mounting space of the motor 300 in the electric wheel 10 and the mounting position of the suspension can be effectively separated, the mounting of the motor 300 and the connection of the suspension are not interfered with each other, and the convenient mounting of the motor 300 in the electric wheel 10 and the convenient connection of the suspension are realized. It can be understood that in the present embodiment, the rim 200 is in the form of a spokeless, and the wheel carrier 100 is used to mount the electric wheel 10 and the suspension and the motor 300, thereby enlarging the mounting space in the electric wheel 10 and reducing the overall mass of the electric wheel 10.

As an implementation manner, as shown in fig. 3 to 6, the inner ring of the rim 200 is provided with a mounting groove, the electric vehicle wheel 10 further includes a thin-walled bearing 400, the outer ring of the thin-walled bearing 400 is fixedly disposed in the mounting groove, and the inner ring of the thin-walled bearing 400 is fixedly connected with the outer periphery of the first mounting ring 110. In other embodiments, the first mounting ring 110 may be mounted to the inner rim of the rim 200 near the inner side thereof via other types of bearings.

In an embodiment of the present invention, as shown in fig. 3 to 6, the electric vehicle wheel 10 further includes a brake disc 500 and at least two brake calipers 600, the brake disc 500 is fixedly disposed at the inner side of the wheel rim 200, the at least two brake calipers 600 are disposed at the supporting portion 140, and the at least two brake calipers 600 are installed to the brake disc 500. At least two brake calipers 600 are arranged centrally symmetrically within the first mounting ring 110. Specifically, the wheel carrier 100 has two support arms 142 with central symmetry, and the two support arms 142 respectively have a boss 145 for mounting the brake caliper 600, and the shape of the boss 145 is adapted to the mounting position of the brake caliper 600, so as to facilitate the braking and mounting of the brake caliper 600. Optionally, the brake disc 500 and the rim 200 are connected by riveting, welding, screwing, interference connection, or the like. In other embodiments, the brake disc 500 may be integrally formed with the rim 200 and may be integrally machined.

In an embodiment of the present invention, as shown in fig. 3-6, the motor 300 adopts an inner hollow outer rotor 320 structure, so that the motor 300 can achieve a good heat dissipation effect during the driving process. In other embodiments of the present invention, the electric vehicle wheel 10 further includes a tire 700, and the tire 700 is disposed on the outer ring of the rim 200.

In each of the above embodiments of the present invention, the conventional spoke structure is removed, and the gravity of the vehicle body is directly transmitted through the wheel carrier 100. This design greatly expands the available space within the wheel, reduces the overall mass of the electric vehicle wheel 10, and provides a more uniform force on the rim 200 under vertical dynamic loads on the road surface. In addition, the arrangement of the outer rotor 320 motor 300 and the inner brake (the brake caliper 600 and the brake disc 500) in combination can reduce the influence of heat generated by the brake on the magnetic field of the motor 300. Compared with the prior art, the utility model discloses still have following advantage: (1) the design reduces the total mass of the electric wheel 10, the rim 200 is stressed more uniformly under the vertical dynamic load of the road surface, the available space in the wheel is greatly expanded, and enough space is reserved for subsequent vibration isolation and other devices; (2) the wheel carrier 100 is easier to connect with the suspension component, and in addition, the appearance is more beautiful; (3) the brake with the structure is an inner outer disc type brake arranged on the wheel, is far away from the outer motor 300, is isolated by the wheel carrier 100, and can reduce the influence of heat generated by the brake on the magnetic field of the motor 300; (4) the motor 300 with the structure adopts the hollow outer rotor 320 motor 300, and the air cooling and heat dissipation of the motor 300 are quicker in the vehicle running process.

An embodiment of the present invention further provides an automobile chassis, including the suspension and the electric wheel 10 described in any of the above embodiments, wherein the suspension is connected to the support portion 140. Correspondingly, an embodiment of the utility model also provides a new energy automobile, including vehicle chassis, electric power system and automobile body set up in vehicle chassis respectively; the automobile chassis is the automobile chassis described in the above embodiment. In the automobile chassis and the new energy automobile, the first mounting ring 110 realizes the rotary connection between the wheel carrier 100 and the rim 200 in the electric wheel 10, the second mounting ring 120 and the inner ring of the rim 200 cooperate to mount the motor 300, and the support portion 140 is fixedly connected with the first mounting ring 110 and also fixedly connected with the suspension in the automobile. The second mounting ring 120 is fixedly arranged at one end of the first mounting ring 110 in the axial direction, so that the mounting space of the motor 300 in the electric wheel 10 and the mounting position of the suspension can be effectively separated, the mounting of the motor 300 and the connection of the suspension are not interfered with each other, and the convenient mounting of the motor 300 in the electric wheel 10 and the convenient connection of the suspension are realized.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A wheel carrier, comprising:

2. The wheel carrier according to claim 1, wherein the support portion includes a support block and a plurality of support arms, one ends of the plurality of support arms are fixedly connected with the support block, respectively, and the other ends of the plurality of support arms are fixedly connected with the first mounting ring, respectively; the supporting block is located at the rotation center of the first mounting ring, the supporting block is matched with a suspension in an automobile, and the supporting block can be connected with the suspension in the automobile.

3. The wheel carrier of claim 2, wherein the support block is provided with a first connecting column and a second connecting column, the first connecting column and the second connecting column are arranged at intervals, and the first connecting column and the second connecting column extend in a direction away from the second mounting ring; the first connecting column and the second connecting column are respectively used for connecting a suspension upper strut and a suspension lower cross arm; the supporting block is of a hollow structure.

4. A wheel carrier according to any of claims 2 to 3, wherein at least one of the support arms is provided with brake mounting locations for mounting a brake caliper, the brake mounting locations being bosses, recesses or the like.

5. The wheel carrier according to claim 4, wherein at least two of the support arms are arranged in a central symmetry manner in the first mounting ring, and the brake mounting positions are respectively arranged on the at least two support arms arranged in the central symmetry manner.

6. An electric vehicle wheel comprising a rim, a motor and the wheel carrier of any one of claims 1-5, wherein the first mounting ring is rotatably disposed on an inner ring of the rim, and the motor is disposed between the inner ring of the rim and the second mounting ring; the motor is provided with an outer rotor and an inner stator, the outer rotor is fixedly connected with the inner ring of the rim, and the inner stator is fixedly connected with the outer ring of the second mounting ring.

7. The electric wheel as claimed in claim 6, wherein the inner ring of the rim is provided with a mounting groove, the electric wheel further comprises a thin-walled bearing, the outer ring of the thin-walled bearing is fixedly arranged in the mounting groove, and the inner ring of the thin-walled bearing is fixedly connected with the outer periphery of the first mounting ring.

8. The electric wheel as claimed in claim 6, further comprising a brake disc fixedly disposed inside the rim and at least two brake calipers disposed on the support portion, the at least two brake calipers being fittingly mounted to the brake disc; at least two brake calipers are distributed in the first mounting ring in a central symmetry mode.

9. The electric wheel of claim 6, wherein said motor is of an inner hollow outer rotor construction.

10. An automobile chassis comprising a suspension and a motor wheel according to any one of claims 6 to 9, the suspension being connected to the support.

11. The new energy automobile is characterized by comprising an automobile chassis, an electric power system and an automobile body, wherein the electric power system and the automobile body are respectively arranged on the automobile chassis; the automobile chassis is the automobile chassis of claim 10.