logo

For the Inventor, By the Inventor

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 12631684 B1

PDFFull Text
Date of Patent:
May. 19, 2026

Filed:

Dec. 16, 2021

Battery diagnosis device, battery diagnosis method, battery pack and electric vehicle

Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventor:

Young-Jin Kim, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Catherine T Rastovski

Assistant Examiner:

Sharad undefined Timilsina

Int. Cl.
CPC ...
G01R 31/367 (2019.01); B60L 58/10 (2019.01); G01R 31/3842 (2019.01); H01M 10/052 (2010.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01);
U.S. Cl.
CPC ...
G01R 31/367 (2019.01); B60L 58/10 (2019.02); G01R 31/3842 (2019.01); H01M 10/052 (2013.01); H01M 10/448 (2013.01); H01M 10/484 (2013.01); H01M 2220/20 (2013.01);
Abstract

A battery diagnosis apparatus includes a voltage sensor to generate a voltage signal indicating a battery voltage of a battery, a current sensor to generate a current signal indicating a battery current of the battery and a control circuit. The control circuit determines a capacity curve indicating a relationship between the battery voltage and a charge capacity in a set voltage range based on the voltage signal and the current signal collected at each unit time for a constant current charging period. The control circuit determines a differential curve indicating a relationship between the battery voltage and a differential capacity in the set voltage range based on the capacity curve. The control circuit determines an approximate straight line of the differential curve using a linear approximation algorithm, and determines whether lithium deposition is present in the battery based on the approximate straight line.

Find Patent Forward Citations

Quick Actions:

Kim, Young-Jin. (2026). Battery diagnosis device, battery diagnosis method, battery pack and electric vehicle (U.S. Patent No. 12631684). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12631684

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

Loading…