The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 06, 2022

Filed:

Nov. 20, 2018
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Masayuki Yamashima, Tokyo, JP;

Mikio Tsuruoka, Tokyo, JP;

Hiroki Kitamura, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/44 (2006.01); H01M 10/46 (2006.01); H02J 7/00 (2006.01); H01M 10/42 (2006.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01);
U.S. Cl.
CPC ...
H01M 10/4228 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 10/44 (2013.01); H01M 10/46 (2013.01); H02J 7/0021 (2013.01); H01M 2300/0025 (2013.01);
Abstract

A battery pack which includes: a battery cell which contains a non-aqueous electrolyte, wherein the battery cell is a non-aqueous electrolyte secondary battery; a casing which stores the battery cell; and at least one liquid leakage sensor which detects liquid leakage from the battery cell, wherein the casing and/or the battery cell have a leaked liquid retention region in which the non-aqueous electrolyte tends to be retained when the non-aqueous electrolyte leaks out of the battery cell, wherein the liquid leakage sensor outputs measurement information as a detection result without using a charging/discharging circuit which charges and discharges the battery cell, and wherein at least one sensor unit of the liquid leakage sensor is provided in the leaked liquid retention region.


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