WO2016000328A1

WO2016000328A1 - Electric motor controller and electric motor applying same

Info

Publication number: WO2016000328A1
Application number: PCT/CN2014/087347
Authority: WO
Inventors: 兰剑
Original assignee: 中山大洋电机股份有限公司
Priority date: 2014-07-01
Filing date: 2014-09-24
Publication date: 2016-01-07
Also published as: CN203942407U

Abstract

An electric motor controller and an electric motor applying same, comprising a control box, a control circuit board and a lower insulating pad, wherein a cavity is provided in the middle of the control box, the control circuit board is mounted inside the cavity, and an IPM module is provided on a top surface of the control circuit board, characterized in that a boss is provided on a bottom wall of the cavity, the lower insulating pad is mounted below the IPM module on a bottom surface of the control circuit board, and the control circuit board is supported and mounted on a top surface of the boss via the lower insulating pad. The structure is simple and compact, and is convenient in mounting, with high assembly efficiency, low production costs and good heat dissipation and waterproof performance.

Description

Motor controller and motor for application thereof

Technical field:

The utility model relates to a motor controller and a motor thereof.

Background technique:

The existing motor controller includes a control box and a control circuit board installed in the control box, and an IPM module is disposed on an outer edge of the top surface of the control circuit board, and the IPM module is attached to the inner wall of the cavity of the control box, and the screw is controlled from the control box. Outside the control box and screwed into the IPM module, the IPM module is locked and mounted on the inner wall of the control box. However, the motor controller has the following problems: 1) complicated production process, troublesome installation, low operating efficiency and high cost. 2) The heat dissipation performance of the IPM module is poor, the heat generation is large, and the running efficiency is low; 3) the waterproof performance is poor, and the rainwater easily flows into the control box along the screw to cause damage to the control circuit board, and the reliability is low.

Summary of the invention:

The purpose of the utility model is to provide a motor controller and a motor for the same, the motor controller has the advantages of simple and compact structure, convenient installation, high assembly efficiency, low production cost, good heat dissipation and waterproof performance, and the motor has simple structure and installation. Convenient, low production cost, good heat dissipation and waterproof performance.

The object of the present invention is achieved by the following technical solutions.

A motor controller comprises a control box, a control circuit board and a lower insulation pad, wherein a cavity is opened in the middle of the control box, the control circuit board is installed in the cavity, and an IPM module is arranged on the top surface of the control circuit board, and the feature thereof The utility model is characterized in that: a boss is arranged on the bottom wall of the cavity, and a lower insulating pad is mounted on the bottom surface of the control circuit board under the IPM module, and the control circuit board is mounted on the top surface of the boss through the lower insulating pad.

The top surface of the above-mentioned boss is provided with a fixing block. The bottom of the fixing block is provided with a step. The step is pressed on the top surface of the IPM module through the upper insulating pad, and the fixing block is mounted on the top of the boss by screw locking. On the surface.

A plurality of heat dissipating ribs are disposed on the top surface of the fixing block, and the upper insulating mat and the lower insulating mat are all made of a heat dissipating material.

The cavity described above is filled with a potting material, and the potting material is overlaid on the control circuit board.

The IPM module described above is a patch type IPM module.

The control circuit board described above comprises a copper substrate and an insulating layer wrapped on the outer surface of the copper substrate, and an exposed portion is disposed on the top surface of the control circuit board to expose the copper substrate, and the IPM module is mounted on the bare copper substrate. On the top surface, under the IPM module and on the bottom surface of the control circuit board, an exposed portion is also provided to expose the copper substrate.

A motor includes a rotating shaft, a rotor assembly, a stator assembly, a casing, a front end cover, a rear end cover, and a motor controller. The rotor assembly is mounted on the rotating shaft, and the stator assembly and the casing are mounted together and nested outside the rotor assembly. The front end cover and the rear end cover are respectively mounted at two ends of the casing, the rotating shaft is supported on the bearings of the front end cover and the rear end cover, and the motor controller is mounted on the rear end cover, wherein the motor controller is claimed The structure described in any one of 1 to 6 is as described above.

Compared with the prior art, the utility model has the following effects:

1) a boss is arranged on the bottom wall of the cavity, and a lower insulating pad is mounted on the bottom surface of the control circuit board under the IPM module, and the control circuit board is supported on the top surface of the boss by the lower insulating pad, the structure Simple and compact, it can transmit the heat from the IPM module to the outside of the control box through the lower insulation pad and the boss, improve the heat dissipation efficiency of the IPM module, and at the same time, the lower insulation pad can also raise the creepage distance of the control circuit board and the control box, and improve To control the reliability of the working of the circuit board, the boss raises the control circuit board to fill the glue under the control circuit board, further increasing the safety performance and waterproof performance of the control circuit board;

2) The top surface of the boss is provided with a fixing block, and the bottom of the fixing block is provided with a step. The step is pressed on the top surface of the IPM module through the upper insulating pad, and the heat generated on the upper surface of the IPM module can be passed through the insulating pad and The fixed block is conducted out to improve the heat dissipation efficiency of the IPM module, and the fixing block is mounted on the top surface of the boss by screw locking, and the structure is relatively simple, and the installation and fixing are convenient;

3) A plurality of heat dissipating ribs are arranged on the top surface of the fixing block, and the upper insulating pad and the lower insulating pad are all made of heat dissipating materials to improve heat dissipation efficiency;

4) The cavity is filled with potting material, and the potting material is covered on the control circuit board to effectively protect the control circuit board to prevent the control circuit board from being damaged by dust or water;

5) The IPM module is a SMD IPM module, which is smaller and cheaper than the traditional IPM module. Moreover, the patch type IPM module can be more conveniently potted;

6) An exposed portion is provided on the top surface of the control circuit board to expose the copper substrate, and the IPM module is mounted on the top surface of the exposed copper substrate, and the underside of the IPM module and the bottom surface of the control circuit board are also provided with an open space. The segment is formed to expose the copper substrate, and the structure is simple, and the heat generated by the IPM module is directly transmitted to the lower insulating pad through the copper substrate, and the heat dissipation efficiency is higher;

7) The motor has a simple structure, convenient installation, low production cost, and good heat dissipation and waterproof performance.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a schematic view of the structure of the present invention;

2 is a schematic structural view of a control circuit board of the present invention;

Figure 3 is a perspective view of the control box of the present invention;

Figure 4 is a perspective view of the motor of the present invention;

Figure 5 is an exploded view of the motor of the present invention.

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

Embodiment 1 As shown in FIG. 1 , FIG. 2 and FIG. 3 , the utility model relates to a motor controller, which comprises a control box 1 , a control circuit board 2 and a lower insulation pad 3 , and a cavity is opened in the middle of the control box 1 . 10, the control circuit board 2 is installed inside the cavity 10, the top surface of the control circuit board 2 is provided with an IPM module 4, and the bottom wall of the cavity 10 is provided with a boss 11, under the IPM module 4, the control circuit board A lower insulating pad 3 is mounted on the bottom surface of the second surface, and the control circuit board 2 is supported by the lower insulating pad 3 to be mounted on the top surface of the boss 11. A fixing block 6 is disposed on the top surface of the boss 11. The bottom of the fixing block 6 is provided with a step 61. The step 61 is pressed on the top surface of the IPM module 4 through the upper insulating pad 5, and the fixing block 6 is locked by the screw 7. Mounted on the top surface of the boss 11. A plurality of heat dissipating ribs 62 are disposed on the top surface of the fixing block 6, and the upper insulating mat 5 and the lower insulating mat 3 are all made of a heat dissipating material. The cavity 10 is filled with a potting material which is overlaid on the control circuit board 2. The IPM module 4 is a patch type IPM module. The control circuit board 2 includes a copper substrate 21 and an insulating layer 22 wrapped on the outer surface of the copper substrate 21. On the top surface of the control circuit board 2, an exposed portion is provided to expose the copper substrate 21, and the IPM module 4 is mounted on the bare On the top surface of the copper substrate 21, in the IPM module 4 Below the bottom surface of the control circuit board 2, an exposed portion is also provided to expose the copper substrate 21.

Embodiment 2: As shown in FIG. 1, FIG. 4 and FIG. 5, the utility model relates to a motor, comprising a rotating shaft 81, a rotor assembly 82, a stator assembly 83, a casing 84, a front end cover 85, a rear end cover 86 and a motor. The controller 87 has a rotor assembly 82 mounted on a rotating shaft 81. The stator assembly 83 and the casing 84 are mounted together and nested outside the rotor assembly 82. The front end cover 85 and the rear end cover 86 are respectively mounted at the ends of the casing 84. 81 is supported on bearings of the front end cover 85 and the rear end cover 86, and the motor controller 87 is mounted on the rear end cover 86. The motor controller 87 includes a control box 1, a control circuit board 2, and a lower insulating pad 3, A control cavity 1 is provided with a cavity 10 in the middle, a control circuit board 2 is mounted inside the cavity 10, an IPM module 4 is disposed on the top surface of the control circuit board 2, and a boss 11 is disposed on the bottom wall of the cavity 10, A lower insulating pad 3 is mounted on the bottom surface of the control circuit board 2 under the IPM module 4, and the control circuit board 2 is supported by the lower insulating pad 3 to be mounted on the top surface of the boss 11.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

A motor controller comprises a control box (1), a control circuit board (2) and a lower insulation pad (3), a cavity (10) is opened in the middle of the control box (1), and the control circuit board (2) is mounted on Inside the cavity (10), an IPM module (4) is disposed on the top surface of the control circuit board (2), characterized in that a boss (11) is disposed on the bottom wall of the cavity (10) in the IPM module. (4) A lower insulating pad (3) is mounted on the bottom surface of the control circuit board (2), and the control circuit board (2) is supported and mounted on the top surface of the boss (11) through the lower insulating pad (3).
A motor controller according to claim 1, characterized in that a fixing block (6) is arranged on the top surface of the boss (11), and the bottom of the fixing block (6) is provided with a step (61), the step (61) Pressed on the top surface of the IPM module (4) by the upper insulating pad (5), and the fixing block (6) is locked and mounted on the top surface of the boss (11) by screws (7).
A motor controller according to claim 2, characterized in that: a plurality of heat dissipating ribs (62) are arranged on the top surface of the fixing block (6), and the upper insulating mat (5) and the lower insulating mat (3) are used. Heat sink material.
A motor controller according to claim 1 or 2 or 3, characterized in that the cavity (10) is filled with a potting material, and the potting material is overlaid on the control circuit board (2).
A motor controller according to claim 1 or 2 or 3, wherein said IPM module (4) is a patch type IPM module.
A motor controller according to claim 5, wherein the control circuit board (2) comprises a copper substrate (21) and an insulating layer (22) wrapped on the outer surface of the copper substrate (21), in the control circuit The top surface of the board (2) is provided with an exposed portion to expose the copper substrate (21), and the IPM module (4) is mounted on the top surface of the bare copper substrate (21) under the IPM module (4), and is controlled An exposed portion is also provided on the bottom surface of the circuit board (2) to expose the copper substrate (21).
A motor comprising a rotating shaft (81), a rotor assembly (82), a stator assembly (83), a casing (84), a front end cover (85), a rear end cover (86), and a motor controller (87), the rotor assembly (82) mounted on the rotating shaft (81), the stator assembly (83) and the casing (84) are mounted together and nested in the rotor assembly (82) Outside, the front end cover (85) and the rear end cover (86) are respectively mounted at both ends of the casing (84), and the rotating shaft (81) is supported on the bearings of the front end cover (85) and the rear end cover (86), and the motor controller (87) Mounted on the rear end cover (86), characterized in that the motor controller (87) is the structure described in any one of claims 1 to 6.