Busbar

Patent metadata

Field	Value
Publication number	US-10249965-B2
Application number	US-201815866714-A
Country	US
Kind code	B2
Filing date	Jan 10, 2018
Priority date	Jan 31, 2017
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A busbar includes a plate-shaped body section and a wire connection section extended from the body section. The body section includes a first plate section, a second plate section, and a folding-back section connecting the first plate section and the second plate section. The first plate section and the second plate section are stacked mutually by folding-back the folding-back section. The first plate section has an outer shape that is positioned to a busbar accommodation section of a wire routing member made of insulation resin. A maximum width dimension of the second plate section in a direction parallel to the folding-back section is smaller than that of the first plate section in the direction parallel to the folding-back section.

First claim

What is claimed is:

1. A busbar comprising:
a plate-shaped body section configured to connect adjacent electrode terminals of a plurality of unit cells; and
a wire connection section integrally provided on and extended from the body section, and configured to connect an end portion of a wire,
wherein the body section comprises a first plate section, a second plate section, and at least one folding-back section connecting the first plate section and the second plate section;
wherein the first plate section and the second plate section are stacked mutually by folding-back the at least one folding-back section;
wherein the first plate section has an outer shape that is positioned to a busbar accommodation section of a wire routing member made of insulation resin;
wherein a maximum width dimension of the second plate section in a direction parallel to the at least one folding-back section is smaller than that of the first plate section in the direction parallel to the at least one folding-back section;
wherein the first plate section has:
a long-side edge section which serves a longer side of the first plate section, which faces the at least one folding-back section, and which extends in a direction parallel to an extending direction of the at least one folding-back section; and
a pair of short-side edge sections which serve short sides of the first plate section and which extend from both ends of the long-side edge section in a direction substantially perpendicular to an extending direction of the long-side edge section;

wherein two corner sections, each having substantially right angle, are formed by the long-side edge section and the short-side edge sections of the first plate section, respectively,
wherein the second plate section has:
a long-side edge section which serves a longer side of the second plate section, which faces the at least one folding-back section, and which extends in a direction parallel to the extending direction of the at least one folding-back section; and
a pair of short-side edge sections which serve short sides of the second plate section and which extend from both ends of the long-side edge section in a direction substantially perpendicular to an extending direction of the long-side edge section:

wherein two corner sections, each having substantially right angle, are formed by the long-side edge section and the short-side edge sections of the second plate section, respectively,
wherein when the second plate section is folded and stacked to the first plate section by the at least one folding-back section, one of the pair of short-side edge sections of the second plate section is stacked on one of the pair of short-side edge sections of the first plate section; and
wherein a deviation amount between the one of the pair of short-side edge sections of the second plate section and the one of the pair of short-side edge sections of the first plate section at a vicinity of corresponding corner sections of the first plate section and the second plate section in the extending direction of the at least one folding back section is defined as δ, a dimension of the long-side edge section of the first plate section is defined as L 1 , a dimension of the long-side edge section of the second plate section is defined as L 2 , and a following formula is satisfied:
L 2= L 1−2×δ.

2. The busbar according to claim 1 , wherein a difference between the maximum width dimension of the first plate section and the maximum width dimension of the second plate section in the direction parallel to the at least one folding-back section is set to a dimension capable of allowing a bending deviation amount of the second plate section with respect to the first plate section.

3. The busbar according to claim 1 , wherein a through hole for connection to the electrode terminal is formed in the body section;
wherein a first connection hole of the first plate section and a second connection hole of the second plate section configures the through hole; and
wherein an opening diameter of the second connection hole of the second plate section is larger than that of the first connection hole of the first plate section.

4. The busbar according to claim 1 , wherein the wire connection section is integrally provided on the first plate section of the body section.

5. The busbar according to claim 1 , wherein a width dimension of a side edge section of the second plate section along a direction substantially parallel to a folding-back axis of the at least one folding-back section is smaller than that of the first plate section along the direction substantially parallel to the folding-back axis of the at least one folding-back section.

6. The busbar according to claim 1 , wherein the at least one folding-back section is two folding-back sections which are separated with an air gap.

Assignees

• Yazaki Corp

Inventors

• Okazaki Yutaro
• Toyama Akito
• Ejima Shuhei

Classifications

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/569

  Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/514

  Methods for interconnecting adjacent batteries or cells · CPC title

• H01M50/503 Primary

  characterised by the shape of the interconnectors · CPC title