Electricity storage apparatus

Patent metadata

Field	Value
Publication number	US-2026011843-A1
Application number	US-202519238753-A
Country	US
Kind code	A1
Filing date	Jun 16, 2025
Priority date	Jul 5, 2024
Publication date	Jan 8, 2026
Grant date	—

Abstract

In an electricity storage apparatus, a housing houses an electricity storage module that includes cells. Each of the cells has a shape longer in a width direction than in a height direction and a thickness direction. An end in the width direction is provided with an electrode terminal. The housing includes an upper case and a lower case including a bottom wall, a pair of end walls, and a pair of side walls. Each of the end walls includes a facing face facing the electrode terminal. The electricity storage apparatus has a restraint mechanism that restrains damage of the electrode terminal. The restraint mechanism has at least one of a rib extending from at least one of the facing faces toward the electricity storage module and a shape of at least one of the facing faces extending outward in the width direction from the bottom wall toward an upper side.

First claim

What is claimed is:

1 . An electricity storage apparatus comprising:
an electricity storage module; and a housing, wherein: the housing houses the electricity storage module; the electricity storage module includes a plurality of cells; each of the cells has a height direction, a width direction, and a thickness direction; each of the cells has a shape that is longer in the width direction than in the height direction and the thickness direction; an end in the width direction is provided with an electrode terminal; the housing includes an upper case and a lower case; the upper case includes a top wall; the lower case includes a bottom wall, a pair of end walls, and a pair of side walls; the bottom wall faces the top wall; each of the end walls includes a facing face facing the electrode terminal; the electricity storage apparatus has a restraint mechanism that restrains damage of the electrode terminal; and the restraint mechanism has at least one of a rib extending from at least one of the facing faces toward the electricity storage module and a shape of at least one of the facing faces extending outward in the width direction from the bottom wall toward an upper side.

2 . The electricity storage apparatus according to claim 1 , wherein the restraint mechanism is configured to face outward of a vehicle when the electricity storage apparatus is mounted on the vehicle.

3 . The electricity storage apparatus according to claim 1 , wherein:
the cells are stacked in the thickness direction; between adjacent ones of the cells, a bus bar connects the adjacent cells to each other; the end walls include a first end wall and a second end wall; the first end wall includes a first facing face facing the electrode terminal; the second end wall includes a second facing face facing the electrode terminal; the second end wall faces the first end wall; the second facing face faces the first facing face; the electricity storage apparatus is provided with a first rib extending from the first facing face toward the electricity storage module, and a second rib extending from the second facing face toward the electricity storage module; and in adjacent ones of the cells, the first rib is provided facing one of the adjacent cells, and the second rib is provided facing the other one of the adjacent cells.

4 . The electricity storage apparatus according to claim 1 , wherein a wire harness is provided in a space between at least one of the facing faces and the electricity storage module.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ishikawa Shinya
• Kintsu Yusuke
• Tanaka Takumi
• Haga Masayoshi
• Muraishi Kazuki
• Yamashita Yuji
• Sato Aya

Classifications

• H01M50/209 Primary

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M2220/20

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

• H01M50/242 Primary

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title