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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 12580189 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

May. 18, 2021

Method of manufacturing a secondary battery

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Hyun Ok Jung, Daejeon, KR;

Dong Jun Lee, Daejeon, KR;

Su Yong Shin, Daejeon, KR;

Kwang Ho Yoo, Daejeon, KR;

Assignee:

LG ENERGY SOLUTION, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

James M Erwin

Assistant Examiner:

Gilberto Ramos Rivera

Int. Cl.
CPC ...
H01M 4/505 (2010.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 10/0525 (2010.01); H01M 10/058 (2010.01); H01M 10/44 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 10/0525 (2013.01); H01M 10/058 (2013.01); H01M 10/44 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract

A method of manufacturing a secondary battery, which includes: electrochemically charging a pre-lithiation cell including a positive electrode. The positive electrode comprises a positive electrode active material comprising a lithium manganese-based oxide and a lithium metal counter electrode. The electrochemical charging over-lithiates the positive electrode to form an over-lithiated positive electrode. Then, separating the over-lithiated positive electrode from the pre-lithiation cell and fabricating a secondary battery including the over-lithiated positive electrode and a negative electrode including a negative electrode active material; subjecting the secondary battery to a first charging to form a first-charged secondary battery; resting the first-charged secondary battery; and subjecting the rested secondary battery to a second charging. The maximum voltage of the secondary battery in the first charging is lower than the maximum voltage of the secondary battery in the second charging.

Find Patent Forward Citations

Jung, Hyun. (2026). Method of manufacturing a secondary battery (U.S. Patent No. 12580189). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12580189

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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