CN220673486U

CN220673486U - Stator coil heat radiation structure and brushless motor thereof

Info

Publication number: CN220673486U
Application number: CN202322148143.4U
Authority: CN
Inventors: 梁巨帅; 林侨; 刘友辉
Original assignee: Huizhou Haoying Motor Co ltd
Current assignee: Huizhou Haoying Motor Co ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-03-26
Anticipated expiration: 2033-08-10

Abstract

The utility model discloses a stator coil heat dissipation structure and a brushless motor, comprising a stator coil main body and a heat dissipation mechanism, wherein the stator coil main body comprises a stator winding body and a wiring board which is positioned at an opening of the side wall of the stator winding body and has electric conduction performance; the heat dissipation mechanism is located on the wiring board, wherein, when the wiring board temperature rises, the heat dissipation mechanism increases the heat dissipation efficiency on wiring board surface, this kind of stator coil heat dissipation structure and brushless motor replace traditional stator coil radiating mode, have avoided the higher temperature of motor during operation coil, lead to winding system's resistance increase, and then reduce motor work efficiency's problem.

Description

Stator coil heat radiation structure and brushless motor thereof

Technical Field

The utility model relates to the technical field of RC model vehicles, in particular to a stator coil heat dissipation structure and a brushless motor thereof.

Background

The RC model vehicle market is a fast-growing industry, and has a very broad prospect. With the development of technology, the appearance and performance of RC model vehicles are greatly improved, and the price is continuously reduced, so that more and more people start to interest in the RC model vehicles, with the improvement of the living standard of people, the demands of consumers for high-performance toys are continuously improved, more and more people start to pursue stimulation and pleasure, the RC model vehicles are the best choices for meeting the demands, however, the RC model vehicle market also faces some challenges, and firstly, the price of the RC model vehicles is relatively high, which can limit the development of the market; second, the performance and appearance of RC model vehicles need to be improved continuously.

At present, when the RC model vehicle runs, copper bars on a stator assembly of a motor only play a role in conducting electricity, but cannot play a role in radiating heat, so that the temperature of a coil is higher when the motor works, the resistance of a winding system is larger after the temperature rises, the motor efficiency is further reduced, and the overall performance of the motor is influenced.

Disclosure of Invention

The utility model aims to provide a stator coil heat dissipation structure which replaces the traditional stator coil heat dissipation mode, and solves the problems that the temperature of a coil is high when a motor works, the resistance of a winding system is increased, and the working efficiency of the motor is further reduced.

In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

a stator coil heat dissipation structure, comprising:

the stator coil main body comprises a stator winding body and a wiring board which is positioned at the opening of the side wall of the stator winding body and has conductivity;

and a heat dissipation mechanism on the wiring board, wherein the heat dissipation mechanism increases heat dissipation efficiency of the surface of the wiring board when the temperature of the wiring board increases.

As a preferred embodiment of the stator coil heat dissipation structure of the present utility model, the stator coil main body further includes insulating paper between the terminal plate and the stator winding body.

As a preferred embodiment of the stator coil heat dissipation structure of the present utility model, the insulating paper is attached to a side of the terminal plate adjacent to the stator winding body.

As a preferred scheme of the stator coil heat dissipation structure, a tin soldering port is formed in the side wall of the wiring board.

As a preferable mode of the stator coil heat dissipation structure, the side wall of the wiring board is provided with a tin welding point welded with the stator winding body through the tin welding opening.

As a preferred embodiment of the stator coil heat dissipation structure of the present utility model, the heat dissipation mechanism includes a plurality of heat dissipation protrusions located on a side of the terminal plate away from the stator winding body, and heat dissipation grooves located on the terminal plate.

As a preferred embodiment of the stator coil heat dissipation structure of the present utility model, the heat dissipation grooves are located on the surface of the heat dissipation bump.

As a preferred embodiment of the stator coil heat dissipation structure of the present utility model, the heat dissipation mechanism further includes heat conductive glue filled in a gap between the connection plate and the enamel wire of the stator winding body.

As an optimal scheme of the stator coil heat dissipation structure, the wiring board is a copper plate with high heat conductivity coefficient, and the wiring board is tightly attached to the enameled wire of the stator winding body.

A brushless motor comprising the stator coil heat dissipation structure described above.

Compared with the prior art, the stator coil heat radiation structure has the beneficial effects that when the temperature of the surface of the wiring board is increased, the heat radiation performance of the surface of the wiring board is increased through the heat radiation mechanism, so that the temperature of a winding coil of a stator coil main body is reduced, a traditional stator coil heat radiation mode is replaced, and the problems that the resistance of a winding system is increased and the working efficiency of a motor is reduced due to the fact that the temperature of the coil is higher when the motor works are avoided.

Compared with the mode of adopting the copper bar structure in the prior art, the heat dissipation area of the motor is increased by 93.47%, and the coil temperature of the motor can be effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a structural exploded view of a prior art stator coil heat dissipating structure;

FIG. 2 is a structural exploded view of a stator coil heat dissipating structure according to the present utility model;

fig. 3 is a schematic structural diagram of a wiring board of a stator coil heat dissipation structure according to the present utility model.

In the figure: 100. a stator coil body; 110. a stator winding body; 120. a wiring board; 120a, a tin soldering port; 120b, soldering points; 130. insulating paper; 200. a heat dissipation mechanism; 210. a heat dissipation bump; 220. a heat sink; 230. and (5) heat-conducting glue.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" 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," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model provides a stator coil heat dissipation structure, which replaces the traditional stator coil heat dissipation mode, and solves the problems that the temperature of a coil is higher when a motor works, the resistance of a winding system is increased, and the working efficiency of the motor is further reduced.

Fig. 2-3 are schematic structural diagrams of a stator coil heat dissipation structure according to the present utility model, and please refer to fig. 2-3 for a detailed description of the stator coil heat dissipation structure.

Example 1

Referring to fig. 2-3, the present utility model discloses a heat dissipation structure for a stator coil, wherein a main body portion of the heat dissipation structure comprises a stator coil main body 100 and a heat dissipation mechanism 200.

The stator coil main body 100 includes a stator winding body 110, a wiring board 120 with conductive performance located at an opening of a side wall of the stator winding body 110, and the wiring board 120 is used for transmitting energy output after the stator winding body 110 is electrically connected to an output shaft.

In the present embodiment, the stator coil main body 100 further includes insulating paper 130 between the terminal plate 120 and the stator winding body 110 for preventing short circuit of the circuit caused by conduction between the terminal plate 120 and the coils of the stator winding body 110.

In this embodiment, the wiring board 120 is a copper plate with a higher thermal conductivity, which is used to increase the thermal conductivity of the wiring board 120 itself, thereby increasing the efficiency of heat transfer from the stator winding body 110 to the wiring board 120; the wiring board 120 is closely attached to the enamel wire of the stator winding body 110, so that heat of the enamel wire of the stator winding body 110 can be conveniently and rapidly transferred to the wiring board 120.

The heat dissipation mechanism 200 is used for increasing the heat dissipation efficiency of the wiring board 120 and the stator winding body 110, wherein the heat dissipation mechanism 200 is located on the wiring board 120, when the temperature of the wiring board 120 increases, the heat dissipation efficiency of the surface of the wiring board 120 is increased by the heat dissipation mechanism 200, and then when the temperature of the stator winding body 110 increases to transfer heat to the wiring board 120, the heat dissipation speed of the wiring board 120 is increased, and further the heat dissipation efficiency of the wiring board 120 and the stator winding body 110 is improved.

In the present embodiment, the heat dissipation mechanism 200 includes a plurality of heat dissipation protrusions 210 located on one side of the wiring board 120 far from the stator winding body 110 and a heat dissipation groove 220 located on the wiring board 120, so as to increase the contact area between the surface of the wiring board 120 and the outside air, and further increase the heat dissipation area of the wiring board 120.

In this embodiment, the heat dissipation groove 220 is located on the surface of the heat dissipation bump 210, so that the inner wall of the heat dissipation groove 220 is better contacted with the outside air, thereby increasing the heat dissipation efficiency of the heat dissipation groove 220.

In this embodiment, the heat dissipation mechanism 200 further includes a heat-conducting glue 230 filled in the gap between the wiring board 120 and the enamel wire of the stator winding body 110, so as to transfer the heat generated by the enamel wire of the stator winding body 110 to the wiring board 120 more quickly, and further dissipate the heat more quickly through the heat dissipation bump 210 and the heat dissipation groove 220 on the wiring board 120.

In this embodiment, the specific usage flow is as follows: when the RC model car starts to work, when the temperature of the stator winding body 110 of the motor increases, heat on the stator winding body 110 is transferred to the wiring board 120 through the contact between the wiring board 120 and the heat conducting glue 230, and the wiring board 120 dissipates heat through the contact between the wiring board 120 and the outside air, and meanwhile, the contact area between the wiring board and the outside air is increased through the heat dissipation mechanism 200, so that the heat dissipation efficiency of the wiring board 120 is accelerated.

Example 2

On the basis of embodiment 1, in order to facilitate the disassembly and assembly of the terminal plate 120 and the stator winding body 110, referring to fig. 2 and 3, a solder joint 120a is formed on the side wall of the terminal plate 120, so as to facilitate the welding of the terminal plate 120 and the side wall of the stator winding body 110 through the solder joint 120 b;

in the present embodiment, the side wall of the terminal plate 120 is provided with soldering points 120b for soldering the terminal plate 120 to the stator winding body 110 through the soldering openings 120a, so as to solder the terminal plate 120 to the stator winding body 110 in cooperation with the soldering openings 120 a. The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A stator coil heat dissipation structure, comprising:

a stator coil main body (100) comprising a stator winding body (110) and a wiring board (120) which is positioned at the opening of the side wall of the stator winding body (110) and has electric conduction performance;

and a heat dissipation mechanism (200) on the wiring board (120), wherein the heat dissipation mechanism (200) increases the heat dissipation efficiency of the surface of the wiring board (120) when the temperature of the wiring board (120) increases.

2. The stator coil heat dissipating structure of claim 1 wherein said stator coil body (100) further comprises insulating paper (130) between said terminal plate (120) and said stator winding body (110).

3. The stator coil heat dissipating structure of claim 2, wherein said insulating paper (130) is attached to a side of said terminal plate (120) adjacent to said stator winding body (110).

4. The stator coil heat dissipation structure as recited in claim 1, characterized in that a solder joint (120 a) is provided on a side wall of the wiring board (120).

5. The stator coil heat dissipation structure according to claim 4, wherein a side wall of the terminal plate (120) is provided with a soldering point (120 b) welded to the stator winding body (110) through the soldering port (120 a).

6. The stator coil heat dissipating structure of claim 1, wherein said heat dissipating mechanism (200) comprises a plurality of heat dissipating bumps (210) on a side of said terminal block (120) remote from said stator winding body (110) and heat dissipating grooves (220) on said terminal block (120).

7. The stator coil heat dissipating structure of claim 6, wherein said heat dissipating grooves (220) are located on a surface of said heat dissipating bumps (210).

8. The stator coil heat dissipating structure as recited in claim 6, wherein the heat dissipating mechanism (200) further comprises a heat conductive paste (230) filled in a gap between the terminal plate (120) and the enamel wire of the stator winding body (110).

9. The stator coil heat dissipation structure as recited in claim 1, characterized in that the wiring board (120) is a copper plate with a higher thermal conductivity, and the wiring board (120) is tightly attached to the enameled wire of the stator winding body (110).

10. A brushless motor comprising a stator coil heat dissipation structure as claimed in any one of claims 1 to 9.