Busbar module

Patent metadata

Field	Value
Publication number	US-11569551-B2
Application number	US-202117222020-A
Country	US
Kind code	B2
Filing date	Apr 5, 2021
Priority date	Apr 7, 2020
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A busbar module includes a case to be attached to a battery assembly, busbars and electric wires having a connection end to be connected to the busbars. The case includes busbar accommodation portions to accommodate the busbars and an electric wire routing groove portion to accommodate the electric wires. The electric wire routing groove portion includes a connection end accommodation portion to accommodate the connection end, an accommodation portion cover and an electric wire lead-out portion configured such that the electric wires are drawn out from the connection end accommodation portion toward a direction. An outer surface of the accommodation portion cover is to form a bottom surface of a routing path configured such that the electric wires drawn out from the connection end accommodation portion extend in the routing path.

First claim

What is claimed is:

1. A busbar module comprising:
a case to be attached to a battery assembly including a plurality of single batteries, the case having a first end and a second end in a longitudinal direction of the case;
a plurality of busbars supported by the case and configured to be connected to electrodes of the plurality of single batteries; and
a plurality of electric wires each having a connection end configured to be electrically connected to each of the plurality of busbars,
wherein the case includes:
a busbar accommodation row portion in which a plurality of busbar accommodation portions each configured to accommodate each of the plurality of busbars are arranged in a row along the longitudinal direction; and
an electric wire routing groove portion extending along the busbar accommodation row portion and configured to accommodate at least one of the plurality of electric wires such that the at least one of the plurality of electric wires is routed toward a direction oriented from the second end toward the first end of the case,
wherein the electric wire routing groove portion includes:
a connection end accommodation portion having a concave shape and configured to accommodate the connection end;
an accommodation portion cover provided on the connection end accommodation portion in an openable and closable manner with respect to the connection end accommodation portion and configured to cover an upper portion of the connection end accommodation portion; and
an electric wire lead-out portion provided on an end of the connection end accommodation portion in the direction and configured such that each of the plurality of electric wires is drawn out from the connection end accommodation portion toward the direction with the connection end being accommodated in the connection end accommodation portion,
wherein an outer surface of the accommodation portion cover is configured to, when the accommodation portion cover covers the upper portion of the connection end accommodation portion, form a bottom surface of a routing path, the routing path being configured such that each of the plurality of electric wires drawn out from the connection end accommodation portion extends in the routing path.

2. The busbar module according to claim 1 ,
wherein the connection end accommodation portion is a plurality of connection end accommodation portions including a first connection end accommodation portion and a second connection end accommodation portion, and
wherein the electric wire lead-out portion includes a guide surface having a gradient at which one of the plurality electric wires drawn out from the second connection end accommodation portion is guided to the routing path formed above the first connection end accommodation portion provided further in the direction than the second connection end accommodation portion.

3. The busbar module according to claim 1 ,
wherein each of the plurality of busbars includes a connection piece configured to, when the plurality of busbars are accommodated in the busbar accommodation portions, extend toward the connection end accommodation portion and configured such that the connection end is crimped and connected at an end portion of the connection piece, and
wherein the end portion of the connection piece is configured to be accommodated in the connection end accommodation portion.

4. The busbar module according to claim 1 ,
wherein the connection end accommodation portion is a plurality of connection end accommodation portions including a first connection end accommodation portion and a second connection end accommodation portion, the first connection end accommodation portion being adjacent to the second connection end accommodation portion in the longitudinal direction and provided closer to the first end of the case than the second connection end accommodation portion,
wherein the electric wire lead-out portion is a plurality of electric wire lead-out portions including a first electric wire lead-out portion and a second electric wire lead-out portion respectively provided in the first connection end accommodation portion and the second connection end accommodation portion, and
wherein the second electric wire lead-out portion of the second connection end accommodation portion includes a guide surface having a gradient configured to guide one of the plurality of electric wires, the one being drawn out from the second connection end accommodation portion, to the routing path in which the outer surface of the accommodation portion cover covering the upper portion of the first connection end accommodation portion forms the bottom surface.

Assignees

• Yazaki Corp
• Toyota Motor Co Ltd

Inventors

• Doi Masamichi
• Yanagihara Shinichi
• Shimada Masaki
• Ito Shuta

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M50/507 Primary

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title