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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.

Patent No.:

US 12170387 B1

PDFFull Text
Date of Patent:
Dec. 17, 2024

Filed:

Apr. 16, 2020

Lithium primary battery

Applicant:

Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;

Inventors:

Kyosuke Okazaki, Osaka, JP;

Tadayoshi Takahashi, Osaka, JP;

Futoshi Tanigawa, Osaka, JP;

Naoaki Nishimura, Osaka, JP;

Assignee:

PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Stewart A Fraser

Int. Cl.
CPC ...
H01M 6/02 (2006.01); H01M 4/08 (2006.01); H01M 6/16 (2006.01); H01M 50/533 (2021.01); H01M 4/36 (2006.01); H01M 4/40 (2006.01); H01M 4/66 (2006.01);
U.S. Cl.
CPC ...
H01M 6/02 (2013.01); H01M 4/08 (2013.01); H01M 6/164 (2013.01); H01M 6/166 (2013.01); H01M 4/364 (2013.01); H01M 4/405 (2013.01); H01M 4/667 (2013.01); H01M 50/533 (2021.01); H01M 2300/004 (2013.01);
Abstract

A lithium primary battery including a current collecting wire that electrically connects an electrode body and a sealing body or a battery can, in which the electrode body includes a positive electrode, a negative electrode, and a separator, the negative electrode includes at least one selected from the group consisting of metal lithium and a lithium alloy, the current collecting wire includes a first lead connected to one of the positive electrode and the negative electrode, a second lead connected to the sealing body or the battery can, and an overdischarge suppressing element interposed between the first lead and the second lead, the overdischarge suppressing element includes a first metal layer connected to the first lead, with the first metal layer being thinner than the first lead, a second metal layer connected to the second lead, with the second metal layer being thinner than the second lead, and a conductive layer interposed between the first metal layer and the second metal layer disposed to face each other, the conductive layer includes a resin and a conductive material dispersed in the resin, and the conductive material inserts lithium ions at a potential that is lower than that of the positive electrode.

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