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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 12689228 B1

PDFFull Text
Date of Patent:
Jul. 21, 2026

Filed:

Jun. 05, 2023

Method for supplementing lithium for secondary battery and method for charging and discharging secondary battery

Applicant:

Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;

Inventors:

Jianghui Lin, Ningde, CN;

Yanjie Zhao, Ningde, CN;

Xing Li, Ningde, CN;

Haizu Jin, Ningde, CN;

Assignee:

CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;

Attorney:

ANOVA LAW GROUP. PLLC

Primary Examiner:

Zixuan Zhou

Int. Cl.
CPC ...
H02J 7/00 (2026.01); H01M 4/13 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H02J 7/82 (2026.01); H02J 7/90 (2026.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H02J 7/875 (2026.01); H01M 4/13 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/62 (2013.01); H01M 10/4235 (2013.01); H01M 10/44 (2013.01); H02J 7/82 (2026.01); H02J 7/933 (2026.01); H01M 2004/028 (2013.01);
Abstract

A method for supplementing lithium for a secondary battery includes performing a first round of lithium-supplementing charge and discharge on the secondary battery during routine charge-and-discharge cycles of the secondary battery if a capacity of the secondary battery has reduced by k1 in comparison with an initial capacity and performing a round of lithium-supplementing charge and discharge on the secondary battery after the first round of lithium-supplementing charge and discharge if the capacity of the secondary battery has reduced by k2 in comparison with the capacity achieved after a previous round of lithium-supplementing charge and discharge. k1 and k2 each are in a range from 1.5% to 17%. In a round of lithium-spplementing charge and discharge, a number of times of charge and discharge is at least one and a charge cut-off voltage is in a range from 4.45 V to 5 V.

Find Patent Forward Citations

Lin, Jianghui. (2026). Method for supplementing lithium for secondary battery and method for charging and discharging secondary battery (U.S. Patent No. 12689228). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12689228

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

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