Power relay assembly

Patent metadata

Field	Value
Publication number	US-11276536-B2
Application number	US-201716468018-A
Country	US
Kind code	B2
Filing date	Dec 15, 2017
Priority date	Dec 15, 2016
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

A power relay assembly is provided. A power relay assembly according to an exemplary embodiment of the present invention comprises: an upper case having at least one electric element mounted on one surface thereof; a lower case coupled to the upper case; and at least one bus bar electrically connected to the electric element, disposed between the upper case and the lower case, and including a bottom portion that is in surface contact with at least one of the upper case and the lower case, wherein at least one side of the bottom portion contacts a portion made of a plastic material having heat dissipation and insulation properties in the upper case and the lower case.

First claim

The invention claimed is:

1. A power relay assembly comprising:
an upper case in which at least one electric element is mounted on one surface thereof;
a lower case coupled to the upper case; and
at least one bus bar electrically connected to the electric element, disposed between the upper case and the lower case, and including a bottom portion in surface contact with the upper case and the lower case,
wherein the upper case and the lower case are formed of a plastic material having a heat dissipation property and an insulation property,
wherein one surface of the bottom portion is in surface contact with an inner surface of the upper case and an opposite surface of the bottom portion is in surface contact with an inner surface of the lower case,
wherein the inner surface of the upper case in surface contact with the bottom portion is a protruding portion configured to protrude by a predetermined height, and
wherein the protruding portion is formed to correspond to a shape of the bottom portion.

2. The power relay assembly of claim 1 , wherein the bus bar includes the bottom portion and at least one height portion configured to extend from the bottom portion to protrude to an outer side of the upper case.

3. The power relay assembly of claim 1 , wherein the bottom portion is formed in a plate shape having a predetermined area.

4. The power relay assembly of claim 1 , further comprising an inner plate disposed between the upper case and the lower case,
wherein a plurality of bus bars are provided and some bus bars among the plurality of bus bars are disposed at a location in which bottom portions thereof partially overlap each other, and
the inner plate is disposed to be located between the bottom portions of the overlapping bus bars.

5. The power relay assembly of claim 4 , wherein the inner plate is formed of a plastic material having a heat dissipation property and an insulation property.

6. The power relay assembly of claim 4 , wherein in each of the bus bars disposed at the location in which bottom portions thereof partially overlap each other among the plurality of bus bars, both surfaces of the bottom portion are in surface contact with one surface of the inner plate and one surface of the upper case or one surface of the inner plate and one surface of the lower case.

7. The power relay assembly of claim 1 , wherein:
at least one of the upper case and the lower case includes a plate-shaped metal member; and
the metal member is integrated with the upper case or the lower case, wherein the upper case or lower case is formed of a resin-forming composition having a heat dissipation property and an insulation property through insert-molding.

8. The power relay assembly of claim 7 , wherein the metal member is completely buried inside the upper case or the lower case or fixed to one surface of the upper case or the lower case so that the one surface thereof is exposed to the outside.

9. The power relay assembly of claim 1 , wherein a coating layer having an insulation property and a heat dissipation property is formed on an exposed surface of the power relay assembly.

10. The power relay assembly of claim 1 , wherein the bus bar is formed of an aluminum material and has a coating layer having an insulation property and a heat dissipation property formed on a surface thereof.

Assignees

• Amogreentech Co Ltd

Inventors

• Won Min Ho
• Hwang Seung Jae

Classifications

• H05K1/0209

  External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings · CPC title

• B60Y2200/91

  Electric vehicles · CPC title

• H01H50/02 Primary

  Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B1/01, H04Q1/08, H05K) · CPC title

• B60R16/0238 Primary

  Electrical distribution centers · CPC title

• H02B1/46

  Boxes; Parts thereof or accessories therefor · CPC title