Bus bar

Patent metadata

Field	Value
Publication number	US-12381289-B2
Application number	US-202217882117-A
Country	US
Kind code	B2
Filing date	Aug 5, 2022
Priority date	Aug 6, 2021
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A bus bar includes a wiring pathway made from a conductive material and having bent portions bending at at least two sites of the wiring pathway. The wiring pathway includes members consecutively arranged to form a plate shape. At least two of the members have different characteristics. The members adjacent to each other are connected to each other by laser joining.

First claim

What is claimed is:

1. A bus bar comprising:
a wiring pathway made from a conductive material and having bent portions bending at at least two sites of the wiring pathway,
wherein the wiring pathway comprises members consecutively arranged to form a plate shape, the members include:
connection members arranged at both ends of the wiring pathway and having connection portions for electrical input-output; and
a conductive member arranged between the connection members and connected to the connection members at opposite ends of the conductive member, and

wherein the connection members and the conductive member have different characteristics, and
wherein the wiring pathway includes a laser-fused joint between the consecutively arranged members.

2. The bus bar according to claim 1 , wherein the conductive member has a plate thickness less than a plate thickness of the connection members and has a plate width larger than a plate width of the connection members.

3. The bus bar according to claim 1 , wherein
the conductive member is made from a material softer than the connection members.

4. The bus bar according to claim 3 , wherein the conductive member has the bent portion at at least one site of the conductive member.

5. The bus bar according to claim 1 , wherein
the connection members contain copper, and
the conductive member contains aluminum.

6. The bus bar according to claim 5 , wherein
the conductive member and at least one of the connection members are connected to each other via a clad member containing copper and aluminum.

7. The bus bar according to claim 1 , wherein the wiring pathway electrically connects between different battery stacks.

8. The bus bar according to claim 1 , wherein the characteristics include at least one of material, thermal refining, thickness, width, or surface treatment.

9. The bus bar according to claim 1 , wherein the both ends of the wiring pathway are electrically connected between different battery stacks.

10. The bus bar according to claim 9 , wherein the connection members include a first connection member and a second connection member arranged at the both ends of the wiring pathway, respectively, with the conductive member therebetween.

11. The bus bar according to claim 10 , wherein the conductive member includes:
a first conductive member connected to the first connection member at a first end thereof; and
a second conductive member connected to the second connection member at a first end thereof,
wherein a second end of the first conductive member and a second end of the second conductive member, opposite to the first ends thereof, are connected to each other, and
wherein the connection between the second end of the first conductive member and the second end of the second conductive member forms one of the at least one two sites of the bent portions.

Assignees

• Yazaki Corp

Inventors

• Chaen Takahiro
• Yamaguchi Yasuhiro

Classifications

• H01M50/505

  comprising a single busbar · CPC title

• H01M50/521

  characterised by the material · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/516 Primary

  by welding, soldering or brazing · CPC title

• H01M50/502 Primary

  Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing · CPC title