阅读说明：本技术 一种盘式电机 (Disc type motor ) 是由 杨永庆 肇启鹏 姚大青 张利国 于 2020-03-26 设计创作，主要内容包括：本申请涉及电机技术领域,特别涉及一种盘式电机。一种盘式电机,包括：壳体：转子组件,所述转子组件设置于所述壳体内,所述转子组件内部形成有用于安装定子的定子容置腔；定子组件,所述定子组件设置于所述定子容置腔内,其中,所述定子组件包括定子铁芯、定子支架和安装于所述定子支架靠近所述定子容置腔底部一端、用于将所述定子铁芯连接于所述定子支架上的铁芯固定片；第一冷却机构,所述第一冷却机构设置于所述定子支架内；第二冷却机构,所述第二冷却机构设置于所述定子组件靠近所述定子容置腔底部的一侧,并与所述定子组件连接。本申请中的盘式电机,可以有效的提高定子组件的散热能力,以使盘式电机的功率得到提升。(The application relates to the technical field of motors, in particular to a disc type motor. A disc motor comprising: a housing: the rotor assembly is arranged in the shell, and a stator accommodating cavity for mounting a stator is formed inside the rotor assembly; the stator assembly is arranged in the stator accommodating cavity and comprises a stator core, a stator support and a core fixing piece, wherein the core fixing piece is arranged at one end, close to the bottom of the stator accommodating cavity, of the stator support and is used for connecting the stator core to the stator support; a first cooling mechanism disposed within the stator frame; and the second cooling mechanism is arranged on one side of the stator assembly close to the bottom of the stator accommodating cavity and is connected with the stator assembly. The disc type motor in the application can effectively improve the heat dissipation capacity of the stator assembly so as to improve the power of the disc type motor.)

1. A disc motor, comprising:

a housing:

the rotor assembly is arranged in the shell, and a stator accommodating cavity for mounting a stator is formed inside the rotor assembly;

the stator assembly is arranged in the stator accommodating cavity and comprises a stator core, a stator support and a core fixing piece, wherein the core fixing piece is arranged at one end, close to the bottom of the stator accommodating cavity, of the stator support and is used for connecting the stator core to the stator support;

a first cooling mechanism disposed within the stator frame;

and the second cooling mechanism is arranged on one side of the stator assembly close to the bottom of the stator accommodating cavity and is connected with the stator assembly.

2. The disc motor according to claim 1, wherein the second cooling mechanism includes a cooling portion for conducting out heat of the stator core.

3. The disc motor according to claim 2, wherein the cooling portion includes at least one cooling pipe.

4. The disc motor according to claim 2, wherein the second cooling mechanism further includes a heat radiating portion provided outside the cooling portion for conducting heat to the cooling portion.

5. The disc motor according to claim 4, wherein the heat radiating portion is fixedly connected to one end of the stator core near the bottom of the stator accommodating cavity and covers the core fixing piece.

6. The disc motor according to claim 4, wherein the heat sink is made of a heat conductive and insulating material.

7. The disc motor according to claim 4, wherein the heat radiating portion and the cooling portion are provided by injection molding integrally.

8. The disc motor according to claim 1, wherein a screw hole is formed at a side of the stator bracket adjacent to the core fixing piece, and through holes for passing screws are formed at the core fixing piece and the stator core.

9. The disc motor according to claim 1, wherein the first cooling mechanism is a water cooling channel having a spiral shape, and the water cooling channel extends from an end of the stator bracket away from the bottom of the stator accommodating chamber to an end of the stator accommodating chamber.

Technical Field

The application relates to the technical field of motors, in particular to a disc type motor.

Background

A disc motor is also called an axial field motor, and the direction of the magnetic field inside the motor is along the axial direction. Axial field motors are also known as disc motors because they are generally flat.

Compared with the common motor, the disc motor has the characteristics of small volume, light weight, compact structure, high efficiency and the like, and mainly comprises: stator module, rotor subassembly and output shaft etc. part constitute. The power of the disc motor is greatly affected by the heat dissipation capability of the stator assembly, and how to improve the heat dissipation capability of the stator assembly becomes a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The application provides a disk motor, can effectual improvement stator module's heat-sinking capability to make disk motor's power obtain promoting.

In order to achieve the above object, the present application provides a disc motor including:

a housing:

the rotor assembly is arranged in the shell, and a stator accommodating cavity for mounting a stator is formed inside the rotor assembly;

the stator assembly is arranged in the stator accommodating cavity and comprises a stator core, a stator support and a core fixing piece, wherein the core fixing piece is arranged at one end, close to the bottom of the stator accommodating cavity, of the stator support and is used for connecting the stator core to the stator support;

a first cooling mechanism disposed within the stator frame;

and the second cooling mechanism is arranged on one side of the stator assembly close to the bottom of the stator accommodating cavity and is connected with the stator assembly.

In the disc type motor, the stator assembly is provided with the stator support, wherein the first cooling mechanism is arranged inside the stator support, and then the first cooling mechanism can partially dissipate heat conducted from the stator core to the inside of the stator support; the second cooling mechanism is arranged at one end of the stator assembly close to the bottom of the stator accommodating cavity, namely the second cooling mechanism is arranged outside the stator assembly and is connected with the stator assembly, and then the second cooling mechanism can directly guide out heat generated by the stator iron core; therefore, through the arrangement of the first cooling mechanism and the second cooling mechanism, heat generated in the stator assembly can be dissipated through the inner mode and the outer mode, and therefore the output power of the disc type motor is improved.

Preferably, the second cooling mechanism includes a cooling portion for guiding out heat of the stator core.

Preferably, the cooling part includes at least one cooling pipe.

Preferably, the second cooling mechanism further includes a heat radiating portion provided outside the cooling portion for conducting heat to the cooling portion.

Preferably, the heat dissipation part is fixedly connected with one end of the stator core close to the bottom of the stator accommodating cavity and covers the core fixing piece.

Preferably, the heat dissipation part is made of a heat conducting and insulating material.

Preferably, the heat dissipation part and the cooling part are integrally formed by injection molding.

Preferably, one side of the stator support adjacent to the iron core fixing piece is provided with a threaded hole, and the iron core fixing piece and the stator iron core are both provided with through holes for screws to pass through.

Preferably, the first cooling mechanism is a spiral water-cooling channel, and the water-cooling channel extends from one end of the stator support far away from the bottom of the stator accommodating cavity to one end of the bottom of the stator accommodating cavity.

Drawings

Fig. 1 is a sectional view of a disc motor according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a stator assembly of a disc motor according to an embodiment of the present application.

Icon: 10-a housing; 20-a stator assembly; 21-a stator core; 22-a stator support; 23-a screw; 24-iron core fixing pieces; 30-a first cooling mechanism; 40-a second cooling mechanism; 41-a heat sink; 42-cooling tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a sectional view of a disc motor according to an embodiment of the present application; fig. 2 is a schematic structural diagram of a stator assembly of a disc motor according to an embodiment of the present application. Referring to fig. 1 and 2, an embodiment of the present application provides a disc motor, including:

a housing 10:

the rotor assembly is arranged in the shell 10, and a stator accommodating cavity for installing a stator is formed inside the rotor assembly;

the stator assembly 20 is arranged in the stator accommodating cavity, wherein the stator assembly 20 comprises a stator core 21, a stator bracket 22 and a core fixing piece 24 which is arranged at one end of the stator bracket 22 close to the bottom of the stator accommodating cavity and used for connecting the stator core 21 to the stator bracket 22;

a first cooling mechanism 30, the first cooling mechanism 30 being disposed within the stator frame 22;

and the second cooling mechanism 40 is arranged on one side of the stator assembly 20 close to the bottom of the stator accommodating cavity, and the second cooling mechanism 40 is connected with the stator assembly 20.

In the disc motor, the stator assembly 20 is provided with the stator support 22, wherein the first cooling mechanism 30 is arranged inside the stator support 22, and then the first cooling mechanism 30 can partially dissipate heat conducted from the stator core 21 into the stator support 22; the second cooling mechanism 40 is arranged at one end of the stator assembly 20 close to the bottom of the stator accommodating cavity, namely the second cooling mechanism 40 is arranged outside the stator assembly 20, the second cooling mechanism 40 is connected with the stator assembly 20, and then the second cooling mechanism 40 can directly guide out heat generated by the stator core 21; therefore, by providing the first cooling mechanism 30 and the second cooling mechanism 40, heat generated in the stator assembly 20 can be rapidly dissipated to improve the output power of the disc motor.

It should be noted that the rotor assembly includes a rotor disc, a rotor core and a permanent magnet, the rotor core and the permanent magnet are disposed on the rotor disc, the stator support 22 includes a first support, a second support and a third support, wherein the first support and the second support are disposed oppositely and welded to the third support, and this arrangement is convenient for processing the first cooling mechanism 30 on the stator support 22.

Alternatively, the second cooling mechanism 40 includes a cooling portion for guiding out heat of the stator core 21. The cooling portion dissipates heat generated from the stator core 21 to ensure output power of the disc motor.

Alternatively, the cooling portion includes at least one cooling tube 42. Wherein, the quantity of cooling tube 42 can be two, three or four etc, and when the quantity of cooling tube 42 was three, four or five, cooling tube 42 can be divided into multirow or a plurality of row setting, every row or do not all can be equipped with two at least cooling tubes 42 on arranging, the quantity of cooling tube 42 is according to stator core 21's heat dissipation needs, and the specific adjustment that carries out of space in the motor, the quantity of cooling tube 42 is more, the better radiating effect of stator core 21.

The coolant may be water.

Alternatively, the second cooling mechanism 40 further includes a heat radiating portion 41 disposed outside the cooling portion for conducting heat to the cooling portion. The heat dissipation part 41 is fixedly connected with one end of the stator core 21 close to the bottom of the stator accommodating cavity and covers the core fixing piece. Because the iron core fixing piece 24 connects the stator iron core 21 with the stator support 22, and the heat dissipation part 41 is fixedly connected with the stator iron core 21 and covers the iron core fixing piece 24, axial and radial play cannot be generated between the iron core fixing piece 24 and the stator iron core 21, so that the occurrence of the condition that the disc motor is damaged due to rubbing of a rotor caused by the axial and play generated by the stator iron core 21 is reduced.

The heat dissipation portion 41 is made of a heat conductive and insulating material, for example: epoxy resin, silica gel and the like, and the heat dissipation part 41 and the cooling part are integrally molded through injection molding, so that the relative positions of the stator core 21 and the stator bracket 22 are limited, heat generated by the stator core 21 is conducted to the cooling part through the heat dissipation part 41, and the cooling part dissipates the conducted heat; in addition, the material of the heat dissipation part 41 has good mechanical strength after being integrally molded and cured, and can ensure the reliable operation of the disc motor while ensuring the limitation on the degree of freedom of the stator core 21.

Since the heat dissipation portion 41 is generally made of a material such as epoxy resin or silicone rubber, the heat dissipation portion 41 has good water-blocking properties and insulating properties, and can prevent the stator core 21 from being damaged due to leakage of the coolant caused by damage to the second cooling mechanism 40.

As an optional mode, one side of the stator bracket 22 adjacent to the core fixing plate 24 is provided with a threaded hole, and the core fixing plate 24 and the stator core 21 are both provided with through holes for passing the screws 23. The connection convenience between the stator core and the stator support 22 can be improved by adopting the screw 23 connection mode, and the process procedure of forming the threaded hole in the stator support 22 is relatively simple, so that the production cost of the stator assembly 20 is reduced.

As an optional manner, the first cooling mechanism 30 is a spiral water-cooling channel, and the water-cooling channel extends from one end of the stator bracket 22 far away from the bottom of the stator accommodating cavity to one end of the bottom of the stator accommodating cavity. The water cooling channel dissipates heat conducted from the stator core 21 to the stator frame 22, and the first cooling mechanism 30 and the second cooling mechanism 40 cooperate to increase the heat dissipation rate of the stator core 21.

It should be noted that the structure of the disc motor is relatively compact, and therefore the number of turns of the water cooling passage is small.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.