CN215344285U

CN215344285U - Single heat radiation structure electric vehicle motor

Info

Publication number: CN215344285U
Application number: CN202121352766.8U
Authority: CN
Inventors: 沈词书; 张中华; 代禹平; 郑巍; 毛崇剑; 梁仁希; 陆建华
Original assignee: Lima Vehicle Industry Group Co ltd
Current assignee: Lima Vehicle Industry Group Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-28
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses an electric vehicle motor with a single heat dissipation structure, belongs to the technical field of electric vehicle motors, and solves the problems that an efficient heat exchange motor on the existing electric vehicle is relatively complex in structure and inconvenient to assemble and set, and the adopted technical scheme is as follows: the motor of the electric vehicle with the single heat dissipation structure comprises a stator and a rotor, wherein the stator is arranged on a support, the support is circumferentially and fixedly sleeved on a motor shaft, the rotor is circumferentially and rotatably sleeved on the periphery of the stator, two end covers are respectively arranged at two opposite ends of the rotor, the motor shaft penetrates through the two end covers in a clearance manner, the end covers are in a cover shape and are provided with end parts and side edge parts which are connected into a whole, the motor is characterized in that a plurality of protruding spoiler sheets are integrally formed on the inner end surface of only one end cover, the outer ends of the spoiler sheets are positioned on the radial outer sides of the inner ends of the end covers in the radial direction of the end covers, and the spoiler sheets are uniformly distributed at intervals in the circumferential direction of the inner end surfaces of the end covers.

Description

Single heat radiation structure electric vehicle motor

Technical Field

The utility model relates to a motor applied to an electric vehicle, in particular to an electric vehicle motor with a single heat dissipation structure.

Background

The electric vehicle is taken as a portable vehicle, brings convenience for people's trip, can carry people and objects, and is a very important tool at home. The electric vehicle is provided with walking power by a motor, and the motor on the existing electric vehicle is usually arranged at the hub position of a rear wheel. The motor is at the electric motor car in-process of marcing, can receive the electricity and continue to give electric motor car output power, and stator and rotor in the motor can be continuous emergence relative rotation in the course of the work, these physics and mechanical action make the motor can produce a large amount of heats after working a period, these heats can be accumulated inside the motor and can not be derived easily sometimes, if the heat obtains not abundant derivation, this can bring the influence for the machinery and the physical properties of motor, long-time work back, can bring tired damage for the motor, thereby can influence the working property and the life of motor.

Chinese patent document (publication number: CN 106160340A) discloses a cooling structure of a permanent magnet motor, in particular to a totally-enclosed forced ventilation cooling structure of the permanent magnet motor. The utility model solves the problems of poor cooling performance and limited application range of the existing permanent magnet motor. A totally-enclosed forced ventilation cooling structure of a permanent magnet motor comprises a base, a front end cover, a rear end cover, a front bearing, a rear bearing, a stator structure and a rotor structure; the radial air inlet hole, the third ventilation gap, the axial ventilation hole, the first ventilation gap and the radial air outlet hole form a main cooling air path structure; the axial forward air outlet, the second ventilation gap and the axial forward air outlet form a front auxiliary cooling air path structure; the axial rear air inlet hole, the fourth air outlet gap and the axial rear air outlet hole form a rear auxiliary cooling air path structure together; the front end surface of the rotor core is fixed with a front fan blade; and a rear fan blade is fixed on the rear end surface of the rotor core. The utility model is suitable for the permanent magnet motor.

In order to adapt to heat dissipation of the motor, the structure of the permanent magnet motor of the electric vehicle is relatively complex, the motor needs to be greatly improved, the mechanical strength of the motor is damaged, and the motor is inconvenient to assemble and set.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: the utility model provides a single heat radiation structure electric motor car motor, the structure of this motor is comparatively simple, the assembly setting of being convenient for.

In order to solve the technical problem, the technical scheme of the utility model is as follows: the motor of the electric vehicle with the single heat dissipation structure comprises a stator and a rotor, wherein the stator is arranged on a support, the support is circumferentially and fixedly sleeved on a motor shaft, the rotor is circumferentially and rotatably sleeved on the periphery of the stator, two end covers are respectively arranged at two opposite ends of the rotor, the motor shaft penetrates through the two end covers in a clearance manner, the end covers are in a cover shape and are provided with end parts and side edge parts which are connected into a whole, the motor is characterized in that a plurality of protruding spoiler sheets are integrally formed on the inner end surface of only one end cover, the outer ends of the spoiler sheets are positioned on the radial outer sides of the inner ends of the end covers in the radial direction of the end covers, and the spoiler sheets are uniformly distributed at intervals in the circumferential direction of the inner end surfaces of the end covers.

In the two end covers of the motor, the spoiler is arranged on the inner end face of one end cover only, and the spoiler is not arranged on the inner end face of the other end cover. The position of the spoiler on the end cover has a certain requirement, that is, in the rotation direction of the end cover, the spoiler is to form a spoiler for pushing the gas in the motor to flow, that is, the relative positions of the two ends of the spoiler in the radial direction of the end cover are limited. The spoiler is integrally formed on the inner end face of the end cover, the setting height of the spoiler on the inner end face of the end cover is related to the axial sizes of the end cover and the stator, and a gap is reserved between the spoiler and the stator after the end cover is assembled in place. When the motor works, the end cover drives the spoiler to rotate together, the spoiler can generate a turbulence effect on the inside of the motor, so that the gas inside the motor flows, and the heat exchange effect with the outside is improved.

Further, the spoilers are arc-shaped, and all the spoilers are arc-shaped and bent in the same direction in the circumferential direction of the end cover. The action of the arc-shaped spoiler on the fluid is relatively gentle, and the stable air flow generated in the motor is facilitated.

Furthermore, a plurality of protruding convex bodies are integrally formed on the outer end face of the end cover, the convex bodies are in a strip shape, and the convex bodies are uniformly distributed at intervals in the circumferential direction of the end cover. Through being provided with the convex body of bar, and make the motor in the course of the work, the convex body can produce the disturbance to external air current, thereby can improve the heat conduction effect of end cover.

Further, the length of the convex body is smaller than the radius of the outer end face of the end cover, and the convex body is arranged along the outer edge of the outer end face of the end cover. The end cover is attractive in appearance, and heat exchange efficiency between the outer end face of the end cover and the outside can be guaranteed.

Furthermore, the convex body is arc-shaped, and the arc-shaped bending directions of the convex body and the spoiler are the same. The arc bending directions of the two are the same, so that the motor can be well adapted to the working rotation direction of the motor, the disturbance of the air flows contacted with each other is facilitated, and the heat exchange effect is ensured.

Further, the outer end of the spoiler is located on the downstream side of the inner end thereof in the rotational direction of the end cover. This facilitates pushing the gas at the motor shaft radially outward to achieve efficient heat exchange between the gas flow and the end cap.

Further, a cylindrical coupling part is integrally formed at a center position of the end cover, an outer end portion of the spoiler extends to a side edge portion position of the end cover, and a space is provided between the inner end portion of the spoiler and the coupling part. This makes the setting intensity of spoiler on the end cover high, can reduce the thickness that sets up of spoiler, and the weight of motor can not excessively be increased in the setting of spoiler.

Further, the outer end of the spoiler inclines towards the downstream side, the inner end of the spoiler is approximately vertical to the inner circumferential surface of the end cover, and the inner end and the outer end of the spoiler are in smooth curved surface transition. The space form of the spoiler is convenient for pushing the air flow inside the motor, is convenient for generating smooth air flow inside the motor, and can effectively improve the heat dissipation effect inside the motor.

Compared with the prior art, the utility model has the following beneficial effects: through setting up inside an end cover at the motor the spoiler, the spoiler can follow the end cover and rotate together at the motor during operation, the spoiler of rotation in-process can produce the disturbance to the inside air current of motor, the air current can be inside the motor and the end cover between have the heat conduction of spaced part department to the end cover department, realize and the end cover between the heat exchange, thereby can make the inside temperature difference everywhere of motor little, can effectively avoid the heat of the inside somewhere of motor to gather, the operational environment of motor has been improved, the working property of motor has been improved, the life of motor has been guaranteed. The spoiler is arranged on a single end cover, so that air flow disturbance can be generated in the motor, single air flow can be conveniently formed in the motor, the double end covers are prevented from being provided with the spoiler, two air flows are generated in the motor, and turbulence can be generated between the two air flows in the motor due to surging, so that the heat exchange efficiency is influenced. Through setting up the spoiler, can provide good guard action for the motor, simple structure, convenient assembly sets up.

Drawings

Fig. 1 is an assembly structure view of the electric vehicle motor with the single heat radiation structure.

Fig. 2 is a stepped sectional view of the motor of the electric vehicle with the single heat dissipation structure after being assembled.

FIG. 3 is a block diagram at the inner end face of the end cap.

Fig. 4 is a block diagram at the outer end face of the end cap.

Fig. 5 is a perspective view of the end cap.

In the figure, 1, a motor shaft; 2. an end cap; 21. a coupling portion; 3. A hub; 4. a rotor; 5. a stator; 6. a support; 7. a ball bearing; 8. a spoiler; 9. a convex body.

Detailed Description

The motor of the electric vehicle is applied to the electric vehicle, particularly is arranged at the axis position of a rear wheel hub 3 of the electric vehicle and is used for providing forward power for the electric vehicle. The structure of the motor comprises a stator 5 and a rotor 4, wherein the stator 5 is arranged on the outer peripheral surface of a support 6, the support 6 is fixedly sleeved on a motor shaft 1 in the circumferential direction, the rotor 4 is sleeved on the outer periphery of the stator 5 in the circumferential direction, a magnetic cylinder and a wire winding are arranged between the stator 5 and the rotor 4, and the rotor 4 rotates relative to the stator 5 in the circumferential direction after being electrified.

Two end covers 2 are respectively arranged at two opposite ends of the rotor 4, and a motor shaft 1 penetrates through the two end covers 2 with a gap. The end covers 2 are in a cover shape and are provided with end parts and side edge parts which are connected into a whole, and the two end covers 2 are fastened and fixed on two opposite sides of the rotor 4. A plurality of protruding spoilers 8 are integrally formed on the inner end surface of the end cover 2, the spoilers 8 extend out in the direction of the bracket 6, and a space is formed between the spoilers 8 and the bracket 6. The outer end of the spoiler 8 is radially outside the inner end of the end cap 2, i.e. the spoiler 8 has a certain dimension of extension in the radial direction of the end cap 2, so that the spoiler 8 will generate a certain dimension of spoiler surface when the end cap 2 is rotated in the circumferential direction. In fig. 3, these spoilers 8 are shown spaced apart circumferentially of the inner end surface of the end cap 2.

In fig. 3, the spoilers 8 are shown as being curved, all of the spoilers 8 being curved in the same direction in the circumferential direction of the end cap 2. When the electric vehicle is in operation, the end cap 2 is rotated in the direction of the arrow in fig. 3. The outer end of the spoiler 8 is located on the downstream side of the inner end thereof in the rotational direction of the end cover 2. The outer end of the spoiler 8 inclines towards the downstream side, the inner end of the spoiler 8 is approximately vertical to the inner circumferential surface of the end cover 2, and the inner end and the outer end of the spoiler 8 are in smooth curved surface transition.

In the figure, a cylindrical coupling part 21 is integrally formed at the position of the center of the end cover 2, a ball bearing 7 is arranged in the coupling part 21, the motor shaft 1 is inserted in the ball bearing 7, and the ball bearing 7 provides a rotating supporting function for the motor shaft 1. The outer end portion of the spoiler 8 extends to the position of the side edge portion of the end cover 2 with a space between the inner end portion of the spoiler 8 and the coupling portion 21.

The arrow in fig. 2 indicates the flow direction of the airflow generated inside the motor after the spoiler 8 moves along with the end cover 2 when the motor is in operation. Under 8's disturbance, the inside circulating air current that can produce of motor, have circulating air current's participation, the inside heat exchange efficiency of motor is high, is difficult for causing local thermal accumulation in the motor inside, can provide good guard action for the motor.

A plurality of protruding convex bodies 9 are integrally formed on the outer end face of the end cover 2, the convex bodies 9 are strip-shaped, the convex bodies 9 are uniformly distributed at intervals in the circumferential direction of the end cover 2, and the strength of the end cover 2 can be effectively improved due to the existence of the convex bodies 9. The length of the protrusions 9 is smaller than the radius of the outer end surface of the end cap 2 and is close to half of the radius of the end cap 2, the protrusions 9 are arranged along the outer edge of the outer end surface of the end cap 2, and the protrusions 9 extend to the side of the end cap 2. The convex body 9 is arc-shaped, and the arc-shaped bending directions of the convex body 9 and the spoiler 8 are the same.

Claims

1. The motor of the electric vehicle with the single heat dissipation structure comprises a stator and a rotor, wherein the stator is arranged on a support, the support is circumferentially and fixedly sleeved on a motor shaft, the rotor is circumferentially and rotatably sleeved on the periphery of the stator, two end covers are respectively arranged at two opposite ends of the rotor, the motor shaft penetrates through the two end covers in a clearance manner, the end covers are in a cover shape and are provided with end parts and side edge parts which are connected into a whole, the motor is characterized in that a plurality of protruding spoiler sheets are integrally formed on the inner end surface of only one end cover, the outer ends of the spoiler sheets are positioned on the radial outer sides of the inner ends of the end covers in the radial direction of the end covers, and the spoiler sheets are uniformly distributed at intervals in the circumferential direction of the inner end surfaces of the end covers.

2. The electric motor of claim 1, wherein the spoilers are curved, and all of the spoilers are curved in the same direction in the circumferential direction of the end cover.

3. The electric vehicle motor of claim 2, wherein a plurality of protruding lugs are integrally formed on the outer end surface of the end cover, the lugs having a strip shape, and the lugs are spaced apart from each other in the circumferential direction of the end cover.

4. The electric vehicle motor of claim 3, wherein the length of the projections is less than a radius of the outer end surface of the end cap, the projections being disposed along an outer edge of the outer end surface of the end cap.

5. The electric vehicle motor of claim 3, wherein the projections are arcuate, and the arcuate curvature of both the projections and the spoiler is in the same direction.

6. The electric vehicle motor according to any one of claims 1 to 5, wherein an outer end of the spoiler is located on a downstream side of an inner end thereof in a rotational direction of the end cover.

7. The electric motor for an electric vehicle according to claim 6, wherein a cylindrical coupling portion is integrally formed at a center position of the end cover, an outer end portion of the spoiler extends to a side edge position of the end cover, and an inner end portion of the spoiler is spaced from the coupling portion.

8. The electric motor of claim 6, wherein the outer end of the spoiler is inclined toward the downstream side, the inner end of the spoiler is approximately perpendicular to the inner circumferential surface of the end cap, and the inner end and the outer end of the spoiler are smoothly curved in transition.