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.:
Date of Patent:
Dec. 19, 2023
Filed:
Jul. 17, 2020
Applicant:
Lg Energy Solution, Ltd., Seoul, KR;
Inventor:
Bum Hee Lee, Daejeon, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/389 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01); G01R 31/3835 (2019.01); G01R 27/14 (2006.01); G01R 31/36 (2020.01);
U.S. Cl.
CPC ...
G01R 31/389 (2019.01); G01R 27/14 (2013.01); G01R 31/3648 (2013.01); G01R 31/3835 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01);
Abstract
A battery resistance diagnosis device includes a current supply unit configured to supply a preset fixed current to a battery cell, a voltage measurement unit configured to measure an open circuit voltage of the battery cell while the fixed current is supplied, an external resistance calculation unit configured to calculate an external resistance value of the battery based on the fixed current and the open circuit voltage of the battery cell, and an abnormality diagnosis unit configured to diagnose a battery abnormality due to a voltage drop by comparing the calculated external resistance value with a preset external resistance value.