Electricity storage device

Patent metadata

Field	Value
Publication number	US-2025349963-A1
Application number	US-202519170060-A
Country	US
Kind code	A1
Filing date	Apr 4, 2025
Priority date	May 10, 2024
Publication date	Nov 13, 2025
Grant date	—

Abstract

An electricity storage device includes a plurality of electricity storage modules, a plurality of cross members, and connecting brackets that connect adjacent electricity storage modules. The cross member extends in a Y-direction along each of the electricity storage modules arranged in the Y-direction. The cross member extends in an X-direction between electricity storage modules adjacent to each other in the Y-direction. Each of the connecting brackets is connected to each of the cross members.

First claim

What is claimed is:

1 . An electricity storage device comprising:
a plurality of electricity storage modules arranged in a first direction; a plurality of partition members that partition areas in which the electricity storage modules are respectively arranged; and a connecting member that connects electricity storage modules adjacent to each other in the first direction among the plurality of electricity storage modules, wherein the partition members include: a first partition member that extends in the first direction along each of the plurality of electricity storage modules arranged in the first direction; and a second partition member that extends in a second direction intersecting the first direction between the electricity storage modules adjacent to each other in the first direction, the connecting member being connected to each of the first partition member and the second partition member.

2 . The electricity storage device according to claim 1 , further comprising a bus bar that electrically connects the electricity storage modules adjacent to each other in the first direction, wherein the bus bar is provided below the connecting member.

3 . The electricity storage device according to claim 2 , further comprising a lower case in which each of the partition members is provided, wherein:
the first partition member has an upper end portion to be connected to the connecting member, a lower end portion to be connected to the lower case, and a side surface portion that connects the upper end portion and the lower end portion to each other, and extends in the first direction so as to span the plurality of electricity storage modules arranged in the first direction; a gap is formed between the side surface portion of the first partition member and the second partition member; and the bus bar is provided so as to extend through the gap in the first direction between the lower case and the connecting member.

4 . The electricity storage device according to claim 1 , wherein:
each of the plurality of electricity storage modules includes a first end surface and a second end surface arranged in the second direction; the first partition member includes one first partition member extending in the first direction along the first end surface, and another first partition member extending in the first direction along the second end surface; and the connecting member includes one connecting member to be connected to each of the second partition member and the one first partition member, and another connecting member to be connected to each of the second partition member and the other first partition member.

5 . The electricity storage device according to claim 4 , further comprising a plurality of fastening members, wherein:
each of the fastening members includes a head portion and a shaft portion connected to the head portion; each of the plurality of electricity storage modules includes a first side surface and a second side surface arranged in the first direction; the second partition member includes one second partition member extending in the second direction along the first side surface, and another second partition member extending in the second direction along the second side surface; the one connecting member includes a first connecting piece for connecting the one first partition member and the one second partition member to each other, and a second connecting piece for connecting the one first partition member and the other second partition member to each other; the other connecting member includes a third connecting piece for connecting the other first partition member and the one second partition member to each other; the fastening members include a first fastening member for fastening the first connecting piece and the one first partition member to each other, a second fastening member for fastening the first connecting piece and the one second partition member to each other, a third fastening member for fastening the second connecting piece and the one first partition member, and a fourth fastening member for fastening the third connecting piece and the one second partition member; a distance between the first fastening member and the third fastening member is smaller than a distance between the second fastening member and the fourth fastening member; and each of a length of the shaft portion of the first fastening member and a length of the shaft portion of the third fastening member is smaller than each of a length of the shaft portion of the second fastening member and a length of the shaft portion of the fourth fastening member.

Assignees

• Toyota Motor Co Ltd

Inventors

• Goitsuka Shinya
• Otake Hiroshi

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/502

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

• H01M50/367

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title

• H01M50/262 Primary

  with fastening means, e.g. locks · CPC title

• H01M50/291

  characterised by their shape · CPC title