Electric power conversion apparatus

Patent metadata

Field	Value
Publication number	US-10873269-B2
Application number	US-201916659705-A
Country	US
Kind code	B2
Filing date	Oct 22, 2019
Priority date	Apr 25, 2017
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

An electric power conversion apparatus includes: a heat-generating element; a case having a cooling wall portion on which the heat-generating element is held and accommodating the heat-generating element; a flow passage cover having an opening formed therein and covering a surface of the cooling wall portion on the opposite side to the heat-generating element; a standing portion standing from the cooling wall portion and inserted in the opening; a flow-passage side wall portion formed in one of the cooling wall portion and the flow passage cover to protrude toward the other; a coolant flow passage surrounded by the cooling wall portion, the flow passage cover and the flow-passage side wall portion; and a sealant that seals both a gap between the cooling wall portion and the flow passage cover at a periphery of the coolant flow passage and a gap between the standing portion and the flow passage cover.

First claim

What is claimed is:

1. An electric power conversion apparatus comprising:
a heat-generating element;
a case having a cooling wall portion on which the heat-generating element is held and accommodating the heat-generating element;
a flow passage cover having an opening formed therein and covering a surface of the cooling wall portion on an opposite side to a surface of the cooling wall portion on which the heat-generating element is held;
a standing portion standing from the cooling wall portion and inserted in the opening of the flow passage cover;
a flow-passage side wall portion formed in one of the cooling wall portion and the flow passage cover to protrude toward the other of the cooling wall portion and the flow passage cover;
a coolant flow passage surrounded by the cooling wall portion, the flow passage cover and the flow-passage side wall portion; and
a sealant that seals both a gap between the cooling wall portion and the flow passage cover at a periphery of the coolant flow passage and a gap between the standing portion and the flow passage cover.

2. The electric power conversion apparatus as set forth in claim 1 , wherein the heat-generating element is arranged to overlap the standing portion in a standing direction in which the standing portion stands from the cooling wall portion.

3. The electric power conversion apparatus as set forth in claim 1 , wherein the sealant is constituted of a liquid gasket.

4. The electric power conversion apparatus as set forth in claim 1 , wherein the heat-generating element is a reactor.

5. The electric power conversion apparatus as set forth in claim 1 , further comprising a heat-dissipating member interposed between the heat-generating element and the cooling wall portion to facilitate heat transfer from the heat-generating element to the cooling wall portion.

6. An electric power conversion apparatus comprising:
a heat-generating element;
a case having a cooling wall portion on which the heat-generating element is held and accommodating the heat-generating element;
a flow passage cover covering a surface of the cooling wall portion on an opposite side to a surface of the cooling wall portion on which the heat-generating element is held;
a standing portion standing from the flow passage cover and abutting the cooling wall portion;
a flow-passage side wall portion formed in one of the cooling wall portion and the flow passage cover to protrude toward the other of the cooling wall portion and the flow passage cover;
a coolant flow passage surrounded by the cooling wall portion, the flow passage cover and the flow-passage side wall portion; and
a sealant that seals a gap between the cooling wall portion and the flow passage cover at a periphery of the coolant flow passage.

7. The electric power conversion apparatus as set forth in claim 6 , wherein the heat-generating element is arranged to overlap the standing portion in a standing direction in which the standing portion stands from the flow passage cover.

8. The electric power conversion apparatus as set forth in claim 6 , wherein the sealant is constituted of a liquid gasket.

9. The electric power conversion apparatus as set forth in claim 6 , wherein the heat-generating element is a reactor.

10. The electric power conversion apparatus as set forth in claim 6 , further comprising a heat-dissipating member interposed between the heat-generating element and the cooling wall portion to facilitate heat transfer from the heat-generating element to the cooling wall portion.

Assignees

• Denso Corp

Inventors

• Tsutsui Takuro
• Harada Daisuke

Classifications

• H05K7/20927 Primary

  Liquid coolant without phase change · CPC title

• H02M7/003 Primary

  Constructional details, e.g. physical layout, assembly, wiring or busbar connections · CPC title

• H02M7/12

  using discharge tubes with control electrode or semiconductor devices with control electrode · CPC title

• H02M7/72

  using discharge tubes with control electrode or semiconductor devices with control electrode · CPC title

• H02M7/48

  using discharge tubes with control electrode or semiconductor devices with control electrode · CPC title