Integrated panel level liquid cooling for bus bars

Patent metadata

Field	Value
Publication number	US-10057974-B2
Application number	US-201615343512-A
Country	US
Kind code	B2
Filing date	Nov 4, 2016
Priority date	Nov 4, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

An electrical contactor assembly is provided including: an electrical contactor; an electrical bus bar; a panel; at least one post protruding through the panel and in contact with the electrical bus bar, the post being constructed from an electrically and thermally conductive material, wherein a first end of the at least one post is configured to electrically and thermally connect to the electrical contactor; and a liquid cooled heat sink thermally connected to a second end of the at least one post through the electrical bus bar, wherein the liquid cooled heat sink in operation circulates liquid coolant through the liquid cooled heat sink to absorb heat.

First claim

What is claimed is:

1. An electrical contactor assembly comprising:
an electrical contactor;
an electrical bus bar being constructed from a thermally conductive material;
a panel being constructed from a thermally conductive material;
at least one post protruding through the panel and in contact with the electrical bus bar, the post being constructed from an electrically and thermally conductive material, wherein a first end of the at least one post is configured to electrically and thermally connect to the electrical contactor; and
a liquid cooled heat sink thermally connected to a second end of the at least one post through the electrical bus bar, wherein the liquid cooled heat sink in operation circulates liquid coolant through the liquid cooled heat sink to absorb heat,
wherein the liquid cooled heat sink is interposed between the panel and the electrical bus bar, and
wherein the liquid cooled heat sink is thermally connected to the panel and the electrical bus bar.

2. The electrical contactor assembly of claim 1 , further comprising:
a panel insulator interposed between the electrical bus bar and the liquid cooled heat sink, the panel insulator being constructed from a thermally conductive and electrically insulating material.

3. The electrical contactor assembly of claim 1 , wherein:
the liquid cooled heat sink is composed of a plurality of parallel coolant flow channels.

4. The electrical contactor assembly of claim 1 , wherein:
the contactor assembly includes a plurality of posts, the second end of each of the plurality of posts being thermally connected to liquid cooled heat sink through the electrical bus bar.

5. The electrical contactor assembly of claim 1 , wherein:
the panel is a printed wire board having a plurality of conductive element embedded in one or more layers of the panel.

6. The electrical contactor assembly of claim 1 , further comprising:
a structural support configured to mechanically fasten the at least one post to the panel.

7. An electrical panel box assembly comprising:
a plurality of electrical contactors;
a plurality of electrical bus bars being constructed from a thermally conductive material;
a single panel being constructed from a thermally conductive material;
a plurality of posts protruding through the panel and in contact with the plurality of electrical bus bars, each of the plurality of posts being constructed from an electrically and thermally conductive material, wherein a first end of each of the plurality of posts is configured to electrically and thermally connect to an electrical contactor; and
a liquid cooled heat sink thermally connected to a second end of each of the plurality of posts through the electrical bus bar, wherein the liquid cooled heat sink in operation circulates liquid coolant through the liquid cooled heat sink to absorb heat,
wherein the liquid cooled heat sink is interposed between the panel and each of the plurality of electrical bus bars, and
wherein the liquid cooled heat sink is thermally connected to the panel and each of the plurality of electrical bus bars.

8. The electrical panel box assembly of claim 7 , further comprising:
a plurality of panel insulators interposed between each electrical bus bar and the liquid cooled heat sink, the panel insulator being constructed from a thermally conductive and electrically insulating material.

9. The electrical panel box assembly of claim 7 , wherein:
the liquid cooled heat sink is composed of a plurality of parallel coolant flow channels.

10. The electrical panel box assembly of claim 7 , wherein:
the panel is a printed wire board having a plurality of conductive element embedded in one or more layers of the panel.

11. The electrical panel box assembly of claim 7 , further comprising:
a plurality of structural supports configured to mechanically fasten each of the plurality of posts to the panel.

12. A method of assembling an electrical contactor assembly comprising:
obtaining a post having a first end and a second end, the post being constructed from an electrically and thermally conductive material;
operably connecting the first end of the post to an electrical contactor, wherein a first end of the post is configured to electrically and thermally connect to the electrical contactor;
inserting the second end of the post through a hole in a panel being constructed from a thermally conductive material;
operably connecting an electrical bus bar to the second end of the post, the electrical bus bar being constructed from a thermally conductive material; and
thermally connecting a liquid cooled heat sink to the second end of the post through the electrical bus bar, wherein the liquid cooled heat sink in operation circulates liquid coolant through the liquid cooled heat sink to absorb heat
wherein the liquid cooled heat sink is interposed between the panel and the electrical bus bar, and
wherein the liquid cooled heat sink is thermally connected to the panel and the electrical bus bar.

13. The method of claim 12 , further comprising:
inserting a panel insulator interposed between the electrical bus bar and the liquid cooled heat sink, the panel insulator being constructed from a thermally conductive and electrically insulating material.

14. The method of claim 12 , wherein:
the liquid cooled heat sink is composed of a plurality of parallel coolant flow channels.

15. The method of claim 12 , wherein:
the contactor assembly includes a plurality of posts, the second end of each of the plurality of posts being thermally connected to liquid cooled heat sink through the electrical bus bar.

16. The method of claim 12 , wherein:
the panel is a printed wire board having a plurality of conductive element embedded in one or more layers of the panel.

17. The method of claim 12 , further comprising:
mechanically fastening the post to the panel using a structural support.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Pal Debabrata

Classifications

• H05K1/0203 Primary

  Cooling of mounted components (H05K1/0272 takes precedence) · CPC title

• H05K7/20254

  Cold plates transferring heat from heat source to coolant · CPC title

• H05K2201/10295

  Metallic connector elements partly mounted in a hole of the PCB · CPC title

• H05K2201/10409

  Screws · CPC title

• H01H1/62

  Heating or cooling of contacts · CPC title