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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 11658280 B1

PDFFull Text
Date of Patent:
May. 23, 2023

Filed:

Jul. 02, 2020

Lithium secondary battery and card with built-in battery

Applicant:

Ngk Insulators, Ltd., Nagoya, JP;

Inventors:

Yukinobu Yura, Nagoya, JP;

Masahiko Hibino, Nagoya, JP;

Yuki Fujita, Nagoya, JP;

Assignee:

NGK INSULATORS, LTD., Nagoya, JP;

Attorney:

Burr Patent Law, PLLC

Primary Examiner:

Kenneth J Douyette

Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/133 (2010.01); H01M 4/66 (2006.01); H01M 50/46 (2021.01); H01M 50/54 (2021.01); H01M 10/0525 (2010.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 50/429 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/119 (2021.01); H01M 50/124 (2021.01); H01M 50/121 (2021.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/124 (2021.01); H01M 50/414 (2021.01); H01M 50/417 (2021.01); H01M 50/429 (2021.01); H01M 50/46 (2021.01); H01M 50/54 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract

Provided is a lithium secondary battery including: a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode layer containing carbon; a separator interposed between the positive electrode plate and the negative electrode layer; and an electrolytic solution with which the positive electrode plate, the negative electrode layer, and the separator are impregnated, wherein the positive electrode plate has a thickness of 70 to 120 μm, the negative electrode layer has a thickness of 90 to 170 μm, the lithium secondary battery has a rectangular flat plate shape with each side having a length of 20 to 55 mm, the lithium secondary battery has a thickness of 350 to 500 μm, and the lithium secondary battery has an energy density of 200 to 300 mWh/cm.

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