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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 10790480 B1

PDFFull Text
Date of Patent:
Sep. 29, 2020

Filed:

Aug. 25, 2014

Lithium-ion secondary-battery case and manufacturing method therefor

Applicant:

Nisshin Steel Co., Ltd., Tokyo, JP;

Inventors:

Katsunari Norita, Sakai, JP;

Norimasa Miura, Sakai, JP;

Jun Kurobe, Tokyo, JP;

Assignee:

NISSHIN STEEL CO., LTD., Tokyo, JP;

Attorney:

Lucas & Mercanti, LLP

Primary Examiner:

Jonathan G Leong

Assistant Examiner:

Jacob Buchanan

Int. Cl.
CPC ...
H01M 2/02 (2006.01); H01M 2/04 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); B23K 11/06 (2006.01); C22C 38/50 (2006.01); B23K 11/00 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); B23K 11/20 (2006.01); B23K 20/02 (2006.01); B23K 20/227 (2006.01); C22C 38/06 (2006.01); B23K 20/24 (2006.01); H01M 10/0525 (2010.01); B23K 103/04 (2006.01); B23K 103/18 (2006.01);
U.S. Cl.
CPC ...
H01M 2/0265 (2013.01); B23K 11/0026 (2013.01); B23K 11/061 (2013.01); B23K 11/20 (2013.01); B23K 20/023 (2013.01); B23K 20/227 (2013.01); B23K 20/24 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); H01M 2/0217 (2013.01); H01M 2/0252 (2013.01); H01M 2/0426 (2013.01); H01M 2/0447 (2013.01); H01M 2/0473 (2013.01); H01M 2/0478 (2013.01); H01M 2/0486 (2013.01); H01M 10/0525 (2013.01); B23K 2103/05 (2018.08); B23K 2103/18 (2018.08); C21D 2211/001 (2013.01); Y02T 10/7011 (2013.01);
Abstract

A lithium-ion secondary-battery case that allows bonding without weld spatter and has high strength against external force acting on the battery case, and a method for manufacturing the lithium-ion secondary-battery case are provided. Specifically, an austenitic stainless steel foil is used for a cup component (), and a two-phase stainless steel having an austenite transformation start temperature Ain a temperature increase process at 650° C. to 950° C. and an austenite and ferrite two-phase temperature range of 880° C. and higher, is used for a cover component (), and the diffusion bonding is proceeded while accompanied by grain boundary movement upon transformation of the two-phase steel from a ferrite phase into an austenite phase within a heating temperature range of 880° C. to 1080° C.

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