Motor controller and motor comprising the same

Patent metadata

Field	Value
Publication number	US-2016149473-A1
Application number	US-201615009812-A
Country	US
Kind code	A1
Filing date	Jan 28, 2016
Priority date	May 29, 2014
Publication date	May 26, 2016
Grant date	—

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 chamber and an outer wall; b) a control circuit board, the control circuit board being disposed in the chamber of the control box; and c) a control chip; wherein the control chip is disposed on an outer edge of an 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 a bottom of the heat dissipation boss and an inner surface of a 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 an outer side surface of the control chip to cling to an inner side surface of the heat dissipation boss; and the control circuit board is supported by upper surfaces of the supporting bosses.

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

3 . The motor controller of claim 2 , wherein one side of the control chip is provided with a compressing bar to tightly compress the control chip on the inner side surface of the heat dissipation boss; a first screw passes through an outer 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 outer side surface of the heat dissipation boss is provided with a plurality of fins; the mounting feet are installed on the upper surfaces of the 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 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 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 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 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 chamber comprising a bottom wall; the bottom wall of the chamber is provided with a supporting boss, and the circuit board is supported by an upper surface of the supporting boss; the bottom wall of the 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 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 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; an outer edge of the control circuit board is provided with a plurality of mounting feet; and the mounting feet are supported by the upper surfaces of the supporting bosses.

18 . The motor of claim 17 , wherein one side of the control chip is provided with a compressing bar to tightly compress the control chip on the inner side surface of the heat dissipation boss; a first screw passes through an outer 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.

19 . The motor of claim 18 , wherein the outer side surface of the heat dissipation boss is provided with a plurality of fins; the mounting feet are installed on the upper surfaces of the supporting bosses via a second screw.

20 . The motor of clai

Assignees

• Zhongshan Broad Ocean Motor Co

Inventors

• Wang Xiongcheng
• Bian Wenqing
• Yu Yueqiang

Classifications

• H02K5/22

  Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes · CPC title

• H02K11/20

  for measuring, monitoring, testing, protecting or switching (rectifiers H02K11/04; power electronics H02K11/33) · CPC title

• H02K11/30

  Structural association with control circuits or drive circuits · CPC title

• H02K9/22 Primary

  by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges · CPC title

• H02K5/207

  with openings in the casing specially adapted for ambient air · CPC title