Power conversion device and power conversion assembly

• US 9,414,480 B2
• Filed: 10/23/2014
• Issued: 08/09/2016
• Est. Priority Date: 11/26/2013
• Status: Active Grant

• Current Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Original Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Inventors: Lu, Xing-Xian, You, Pei-Ai, Liu, Gang, Zhang, Jin-Fa
• Primary Examiner(s): Haughton, Anthony
• Assistant Examiner(s): Gafur, Razmeen
• Application Number:
  US14/521,480
• Publication Number:
  US 20150146375A1
• Time in Patent Office: 656 Days
• Field of Search: 361676-678, 36167946-67954, 361688-723, 165 801- 805, 165/104.33, 165/185, 174 151- 153, 174 161- 163, 174/547, 174/548, 257712-722, 257/E23.088, 244/53, 24458-459, 454/184, 312/236
• US Class Current: 1/1
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 2201/10015 Non-printed capacitor
• CPC Class Codes: H05K 7/142 Spacers not being card guides
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14322 wherein the control and power circuits of a power converter are arranged within the same casing
• CPC Class Codes: H05K 7/20181 Filters; Louvers
• CPC Class Codes: H05K 7/20863 Forced ventilation, e.g. on heat dissipaters coupled to components
• CPC Class Codes: H05K 7/2089 for power electronics, e.g. for inverters for controlling motor
• CPC Class Codes: H05K 7/209 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20909 takes precedence
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change

Abstract

A power conversion device is provided. The power conversion device includes a printed wiring board assembly, a grounding member, and a plurality of insulating struts. The printed wiring board assembly includes a printed circuit board and a plurality of electronic components. The printed circuit board has a plurality of through holes. The electronic components are disposed on the printed circuit board. The insulating struts correspond to the through holes and physically connect and electrically insulate the printed circuit board and the grounding member.

Claims

1. A power conversion device, comprising:

a printed wiring board assembly, comprising;

a printed circuit board having a plurality of through holes; and

a plurality of electronic components disposed on the printed circuit board;

a grounding member; and

a plurality of insulating struts corresponding to the through holes and physically connecting and electrically insulating the printed circuit board and the grounding member, wherein each of the insulating struts comprises a first connecting part, a second connecting part, and a plastic part partially covering the first connecting part and the second connecting part, and the first connecting part and the second connecting part are separated by the plastic part.

2. The power conversion device of claim 1, wherein the grounding member comprises a heat-dissipating base, and at least one of insulating struts physically connects and electrically insulates the printed circuit board and the heat-dissipating base.

3. The power conversion device of claim 2, wherein the heat-dissipating base comprises a case and a fluid passage disposed in the case.

4. The power conversion device of claim 2, wherein the heat-dissipating base comprises a case and a fin set disposed in the case.

5. The power conversion device of claim 2, wherein the grounding member further comprises a heat-dissipating member.

6. The power conversion device of claim 5, further comprising:

a clamping member fixed to the heat-dissipating member, wherein the electronic component is clamped between the heat-dissipating member and the clamping member and is uprightly disposed on the printed circuit board.

7. The power conversion device of claim 5, wherein the heat-dissipating member comprises a plurality of fixing portions, some of the insulating struts fix the printed circuit board to the fixing portions.

8. The power conversion device of claim 5, wherein the heat-dissipating member contacts the heat-dissipating base.

9. The power conversion device of claim 1, wherein the power conversion device is a vehicle power conversion device.

10. A printed wiring board assembly, comprising:

a printed circuit board;

a plurality of electronic components disposed on the printed circuit board; and

a restricting member having a body and an opening disposed in the body, wherein the electronic components are disposed in the opening, and the restricting member comprises a plurality of baffles.

11. The printed wiring board assembly of claim 10, wherein the electronic components are capacitors.

12. The printed wiring board assembly of claim 10, wherein the material of the restricting member is metal or plastic.

13. The printed wiring board assembly of claim 10, wherein every two of the baffles are disposed opposite to each other and on an edge of the opening, and ends of the baffles distant from the body tilt toward a center of the opening.

14. The printed wiring board assembly of claim 10, wherein the printed wiring board assembly is applied to a vehicle power conversion device.

15. A power conversion device, comprising:

a printed circuit board;

a plurality of first electronic components disposed on the printed circuit board;

a restricting member having a body and an opening disposed in the body, and the restricting member comprises a plurality of baffles; and

a heat-dissipating member fixed to the printed circuit board and electrically insulated from the restricting member.

16. The power conversion device of claim 15, further comprising:

a clamping member; and

a plurality of second electronic components disposed on the printed circuit board, wherein the clamping member is fixed to the heat-dissipating member, for fixing the second electronic components, so that the second electronic components are uprightly disposed on the printed circuit board.

17. The power conversion device of claim 16, wherein the first electronic components are capacitors and the second electronic components are power devices.

18. The power conversion device of claim 15, wherein the material of the restricting member is metal or plastic.

19. The power conversion device of claim 15, further comprising a plurality of insulating struts physically connecting and electrically insulating the restricting member and the heat-dissipating member.

20. The power conversion device of claim 15, further comprising:

a heat-dissipating base; and

a plurality of insulating struts, for physically connecting and electrically insulating the printed circuit board and the heat-dissipating base.

21. The power conversion device of claim 20, wherein each of the insulating struts comprises a first connecting part, a second connecting part, and a plastic part partially covering the first connecting part and the second connecting part.

22. The power conversion device of claim 20, wherein the heat-dissipating member contacts the heat-dissipating base.

23. The power conversion device of claim 22, wherein the heat-dissipating base comprises a case and a fluid passage disposed in the case.

24. The power conversion device of claim 22, wherein the heat-dissipating base comprises a case and a fin set disposed in the case.

25. The power conversion device of claim 15, further comprising a plurality of insulating struts physically connecting and electrically insulating the printed circuit board and the heat-dissipating member.

26. The power conversion device of claim 25, wherein each of the insulating struts comprises a first connecting part, a second connecting part, and a plastic part partially covering the first connecting part and the second connecting part.

27. The power conversion device of claim 19, wherein each of the insulating struts comprises a first connecting part, a second connecting part, and a plastic part partially covering the first connecting part and the second connecting part.

28. The power conversion device of claim 15, wherein the restricting member further comprises a plurality of coupling portions uprightly disposed on the body, the heat-dissipating member comprises a plurality of coupling holes corresponding to the coupling portions, and the coupling portions are coupled in the coupling holes.

29. The power conversion device of claim 15 wherein every two of the baffles are disposed opposite to each other and on an edge of the opening, and ends of the baffles distant from the body tilt toward a center of the opening.

30. The power conversion device of claim 15, wherein the power conversion device is a vehicle power conversion device.