US 2025/0096372 A1Published application

Battery

AssigneeTDK Corporation

InventorsAkinobu NOJIMA, Shinya WATANABE, Yukiko HIRABAYASHI

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Abstract

This battery includes: an electrical storage element with positive and negative electrodes and insulating film between the positive and negative electrodes and electrically separates the positive and negative electrodes; and an airtight case housing the electrical storage element, wherein the case includes: a first member having bottom and tubular portions; a second member having a lid-like portion covering an opening of the first member and a surrounding wall portion covering the tubular portion from an outside; and a gasket between an end face of the first member and the second member and between the tubular portion and the second member, and wherein a non-contact portion with which the gasket is not in contact is provided in either one or both of a part of a first surface of the first member that faces the gasket and a part of a second surface of the second member that faces the gasket.

Claims8

Dependent claims

A battery comprising:

an electrical storage element including a positive electrode, a negative electrode, and an insulating film that is disposed between the positive electrode and the negative electrode and electrically separates the positive electrode and the negative electrode;
and
a case that accommodates the electrical storage element in an airtight state,
wherein the case includes:
a first member having a bottom portion and a tubular portion;
a second member having a lid-like portion that covers an opening of the first member and a surrounding wall portion that covers the tubular portion from an outside;
and
a gasket continuously disposed between an end face of the first member and the second member and between the tubular portion and the second member, and
a non-contact portion with which the gasket is not in contact is provided in either one or both of a part of a first surface of the first member that faces the gasket and a part of a second surface of the second member that faces the gasket.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/727,780Filed 19 Dec 2022
Priority: JP 2022-00411314 Jan 2022
Published: 20 Mar 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 50/109
Characterised by their shape or physical structure: of button or coin shape
H01M 50/107
Characterised by their shape or physical structure: having curved cross-section, e.g. round or elliptic
H01M 50/152
Characterised by their shape: for cells having curved cross-section, e.g. round or elliptic
H01M 50/153
Characterised by their shape: for button or coin cells

Family

No related US applications are recorded in the indexed filing history.

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