Motor controller and motor comprising the same

Patent metadata

Field	Value
Publication number	US-9807894-B2
Application number	US-201514706948-A
Country	US
Kind code	B2
Filing date	May 7, 2015
Priority date	Jul 18, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A motor controller, including: a control box, a control circuit board, a first press strip, a control chip, and a plurality of plastic press blocks. The control box includes: an inner wall, a bottom, and a cavity formed by the inner wall and the bottom. The control circuit board is disposed on the bottom of the control box. The control chip is disposed on an outer edge of a top face of the control circuit board. The plastic press blocks are disposed in a middle of an end face of the first press strip. Two ends of the first press strip and the inner wall of the control box are assembled together. The control chip is pressed on the inner wall of the control box via the plastic press blocks.

First claim

The invention claimed is:

1. A motor controller, comprising:
a) a control box, the control box comprising: an inner wall, a bottom, and a cavity formed by the inner wall and the bottom;
b) a control circuit board, the control circuit board comprising a top face;
c) a first press strip, the first press strip comprising two ends and an end face;
d) a control chip; and
e) a plurality of plastic press blocks;
wherein
the control circuit board is disposed on the bottom of the control box;
the control chip is disposed on an outer edge of the top face of the control circuit board;
the plastic press blocks are disposed in a middle of the end face of the first press strip;
the two ends of the first press strip and the inner wall of the control box are assembled together; and
the control chip is pressed on the inner wall of the control box via the plastic press blocks.

2. The motor controller of claim 1 , wherein the plastic press blocks are two in number; and the two plastic press blocks are connected together via a plastic press strip.

3. The motor controller of claim 2 , wherein
a groove is disposed on the middle of the end face of the first press strip; two through holes are disposed on the first press strip at two ends of the groove and communicate with the groove;
convex columns protrude downwards from bottom faces of the plastic press blocks whereby forming steps; and
the plastic press strip is embedded in the groove, and the convex columns are embedded in the through holes.

4. The motor controller of claim 3 , wherein insulation layers are disposed on outer surfaces of the plastic press strip, the plastic press blocks, and the first press strip, respectively; and the control chip is nested within a silicon case.

5. The motor controller of claim 3 , wherein a plurality of cooling fins is disposed on an outer wall of the control box corresponding to an outer side of the control chip.

6. The motor controller of claim 5 , wherein the first press strip is made of a metal material, and the first press strip and the inner wall of the control box are assembled together via screws.

7. The motor controller of claim 1 , wherein
the cavity is filled with a sealant and the top face of the control circuit board is covered by the sealant; a top face of the sealant is an inclined plane; and
a plurality of first drip holes is disposed on the inner wall of the control box at a bottom part of a lower side of the inclined plane.

8. The motor controller of claim 7 , wherein a top of the control box is provided with a cover for covering an opening of the top of the control box; and a plurality of second drip holes is disposed on the cover.

9. The motor controller of claim 8 , wherein
when the first drip holes are in use, the second drip holes are occluded by hole plugs; and
when the second drip holes are in use, the first drip holes are occluded by the hole plugs.

10. A motor comprising a motor controller of claim 1 , the motor comprising:
a) a rotating shaft, the rotating shaft comprising two ends;
b) a rotor assembly;
c) a stator assembly;
d) a casing, the casing comprising two ends;
e) a front end cover, the front end cover comprising a first bearing;
f) a rear end cover, the rear end cover comprising a second bearing; and
g) a motor controller;
wherein
the rotor assembly is mounted on the rotating shaft;
the stator assembly and the casing are assembled together and are nested outside the rotor assembly;
the front end cover and the rear end cover are disposed on the two ends of the casing;
the two ends of the rotating shaft are disposed on the first bearings of the front end cover and the second bearing of the rear cover, respectively; and
the motor controller is disposed on the rear end cover.

11. The motor of claim 10 , wherein the plastic press blocks are two in number; and
the two plastic press blocks are connected together via a plastic press strip.

12. The motor of claim 11 , wherein
a groove is disposed on the middle of the end face of the first press strip; two through holes are disposed on the first press strip at two ends of the groove and communicate with the groove;
convex columns protrude downwards from bottom faces of the plastic press blocks whereby forming steps; and
the plastic press strip is embedded in the groove, and the convex columns are embedded in the through holes.

13. The motor of claim 12 , wherein insulation layers are disposed on outer surfaces of the plastic press strip, the plastic press blocks, and the first press strip, respectively; and the control chip is nested within a silicon case.

14. The motor of claim 12 , wherein a plurality of cooling fins is disposed on an outer wall of the control box corresponding to an outer side of the control chip.

15. The motor of claim 14 , wherein the first press strip is made of a metal material, and the first press strip and the inner wall of the control box are assembled together via screws.

16. The motor of claim 10 , wherein
the cavity is filled with a sealant and the top face of the control circuit board is covered by the sealant; a top face of the sealant is an inclined plane; and
a plurality of first drip holes is disposed on the inner wall of the control box at a bottom part of a lower side of the inclined plane.

17. The motor of claim 16 , wherein a top of the control box is provided with a cover for covering an opening of the top of the control box; and a plurality of second drip holes is disposed on the cover.

18. The motor of claim 17 , wherein
when the first drip holes are in use, the second drip holes are occluded by hole plugs; and
when the second drip holes are in use, the first drip holes are occluded by the hole plugs.

Assignees

• Zhongshan Broad Ocean Motor Co

Inventors

• Yu Yueqiang
• Xia Wenbing
• Bian Wenqing
• Tang Songfa
• Wang Xiongcheng

Classifications

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/20

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

• H02K11/0073

  Electricity · mapped topic

• H05K5/0047 Primary

  having a two-part housing enclosing a PCB · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title