Motor controller and motor comprising the same

Patent metadata

Field	Value
Publication number	US-10141809-B2
Application number	US-201615009812-A
Country	US
Kind code	B2
Filing date	Jan 28, 2016
Priority date	May 29, 2014
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A motor controller including a control box and a control circuit board disposed on the chamber of the control box. A control chip is disposed on the outer edge of the upper surface of the control circuit board. The outer wall of the control box is depressed inward to form a heat dissipation boss. A gap is formed between the bottom of the heat dissipation boss and the inner surface of the bottom of the chamber. The inner surface of the bottom of the chamber is provided with a plurality of supporting bosses. One outer edge of the control circuit board inserts into the gap, which enables the outer side surface of the control chip to cling to the inner side surface of the heat dissipation boss. The control circuit board is supported by upper surfaces of the supporting bosses.

First claim

The invention claimed is:

1. A motor controller, comprising:
a) a control box, the control box comprising a bottom plate, a first chamber and a side wall;
b) a control circuit board, the control circuit board comprising a planar plate;
c) a control chip; and
d) a heat dissipation boss; the heat dissipation boss comprising a first side surface;

wherein
the side wall extends from and is substantially perpendicular to the bottom plate;
the first chamber is limited by the bottom plate and the side wall;
the control circuit board is disposed within the first chamber;
the control chip is disposed on the planar plate of the control circuit board;
the side wall is depressed toward the first chamber to form the heat dissipation boss;
the first side surface of the heat dissipation boss is adjacent to the first chamber and is substantially perpendicular to the bottom plate;
a gap is formed between the heat dissipation boss and the bottom plate;
the bottom plate is provided with a first plurality of supporting bosses;
the planar plate of the control circuit board is inserted into the gap;
the control chip clings to the first side surface of the heat dissipation boss;
the planar plate of the control circuit board is substantially parallel to the bottom plate; and
the planar plate of the control circuit board is supported by of the first plurality of supporting bosses.

2. The motor controller of claim 1 , wherein the control chip is sheathed with a silicone case; the control circuit board is provided with a plurality of mounting feet; and the mounting feet are supported by the first plurality of supporting bosses.

3. The motor controller of claim 2 , wherein the heat dissipation boss further comprises a second side surface; the second side surface is opposite to the first side surface; one side of the control chip is provided with a compressing bar to tightly compress the control chip on the first side surface of the heat dissipation boss; and a first screw passes through the second side surface of the heat dissipation boss and is screwed up in the compressing bar to mount the compressing bar on the heat dissipation boss.

4. The motor controller of claim 3 , wherein the second side surface of the heat dissipation boss is provided with a plurality of fins; and the mounting feet are installed on the first plurality of supporting bosses via a second screw.

5. The motor controller of claim 1 , wherein the control box is provided with a mounting hole; the control circuit board is provided with a socket; the socket is sheathed in a wire sheath; and the wire sheath is disposed in the mounting hole.

6. The motor controller of claim 2 , wherein the control box is provided with a mounting hole; the control circuit board is provided with a socket; the socket is sheathed in a wire sheath; and the wire sheath is disposed in the mounting hole.

7. The motor controller of claim 3 , wherein the control box is provided with a mounting hole; the control circuit board is provided with a socket; the socket is sheathed in a wire sheath; and the wire sheath is disposed in the mounting hole.

8. The motor controller of claim 4 , wherein the control box is provided with a mounting hole; the control circuit board is provided with a socket; the socket is sheathed in a wire sheath; and the wire sheath is disposed in the mounting hole.

9. The motor controller of claim 5 , wherein the wire sheath is square-shaped; two sides and a bottom of the wire sheath are provided with slots, an inner wall of the mounting hole is sheathed in the slots; and the first chamber is filled with potting material which covers part of or all of the control circuit board.

10. The motor controller of claim 6 , wherein the wire sheath is square-shaped; two sides and a bottom of the wire sheath are provided with slots, an inner wall of the mounting hole is sheathed in the slots; and the first chamber is filled with potting material which covers part of or all of the control circuit board.

11. The motor controller of claim 7 , wherein the wire sheath is square-shaped; two sides and a bottom of the wire sheath are provided with slots, an inner wall of the mounting hole is sheathed in the slots; and the first chamber is filled with potting material which covers part of or all of the control circuit board.

12. The motor controller of claim 8 , wherein the wire sheath is square-shaped; two sides and a bottom of the wire sheath are provided with slots, an inner wall of the mounting hole is sheathed in the slots; and the first chamber is filled with potting material which covers part of or all of the control circuit board.

13. A motor, comprising a motor body and a motor controller of claim 1 ; wherein the motor body comprises a rotary shaft, a rotor assembly, a stator assembly and a shell assembly; the rotor assembly is disposed on the rotary shaft; the stator assembly and the shell assembly are integrated and sleeved on an outer side of the rotor assembly; and the motor controller is disposed on the shell assembly.

14. The motor of claim 13 , wherein the motor further comprises a box body, a circuit board, and a Hall element; the stator assembly comprises a stator core, a terminal insulator, and coil windings; the terminal insulator is disposed on one end of the stator core; the coil windings are coiled on the terminal insulator; the box body is disposed on the terminal insulator; the box body is provided with a second chamber comprising a bottom wall; the bottom wall of the second chamber is provided with a second supporting boss, and the circuit board is supported by an upper surface of the second supporting boss; the bottom wall of the second chamber is depressed to form a mounting slot; the Hall element of the circuit board is inserted into the mounting slot; and sealing glue is injected into the second chamber to seal the Hall element in the mounting slot and coat the circuit board.

15. The motor of claim 14 , wherein an outer wall of the box body is provided with three mounting feet; the terminal insulator comprises a circular yoke, and a plurality of tooth portions stretching out of the circular yoke; winding slots are formed between every two tooth portions; at an inner side of one winding slot, a left support column and a right support column are disposed on an upper surface of adjacent tooth portions; at an outer side of the winding slot, a first support column is disposed on an upper surface of the circular yoke; the box body is disposed on upper surfaces of the first support column, the left support column, and the right support column via the three mounting feet.

16. The motor of claim 15 , wherein the bottom wall of the second chamber is depressed to form the mounting slot, and a lug boss is formed on a bottom of the box body; a left base is disposed on a bottom of the left support column, and the upper surface of the tooth portion; a right base is disposed on a bottom of the right support column, and the upper surface of the tooth portion; a slot is formed between the left base and the right base; the lug boss is sheathed in the slot and is supported by the upper surface of the tooth portion; and the Hall element is sheathed in the mounting slot and leans outside of the rotor assembly.

17. The motor of claim 16 , wherein the control chip is sheathed with a silicone case; the control circuit board is provided with a plurality of mounting feet; and the mounting feet are supported by the first plurality of supporting bosses.

18. The motor of claim 17 , wherein the heat dissipation boss further comprises a

Assignees

• Zhongshan Broad Ocean Motor Co

Inventors

• Wang Xiongcheng
• Bian Wenqing
• Yu Yueqiang

Classifications

• H02K5/20

  with channels or ducts for flow of cooling medium · CPC title

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K5/18

  with ribs or fins for improving heat transfer · CPC title

• H02K5/15 Primary

  Mounting arrangements for bearing-shields or end plates · CPC title