US 2025/0015470 A1Published application

Bipolar Storage Battery

AssigneesThe Furukawa Battery Co., Ltd., Furukawa Electric Co., Ltd.

InventorsKenji Hirota, Yoshinobu Taira

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Abstract

The occurrence of a short circuit inside a cell member is prevented and the takt time is shortened by forming a through hole to prevent an influence on components, such as deformation of a separator, inside a space housing the cell member caused by an injected electrolyte solution, while also considering case of the injection. A battery includes a plurality of cell members stacked with spacing. Each of the cell members includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The battery includes a space forming member including a substrate and a frame, a plurality of through holes open inside a space housing the cell member, and a lid covering a portion of the frame, the portion surrounding one side face of the cell member. The lid has a communication hole communicating with the plurality of through holes.

Claims6

Dependent claims

A bipolar storage battery, comprising:

a plurality of cell members stacked with spacing, each of the cell members including a positive electrode including a positive electrode current collector and a positive active material layer, a negative electrode including a negative electrode current collector and a negative active material layer, and a separator interposed between the positive electrode and the negative electrode;
a space forming member forming a plurality of spaces individually housing the plurality of cell members, the space forming member including a substrate covering at least one of the positive electrode side or the negative electrode side of each of the cell members, and a frame surrounding a side face of each of the cell members;
a plurality of through holes communicating with at least one space of the plurality of spaces individually housing the plurality of cell members;
and
a lid covering a portion of the frame, the portion surrounding one side face of the cell member, wherein the lid has a communication hole communicating with the plurality of through holes.

2 more elements

Dependencies are inferred from the claim text.