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Title:
BATTERY DEVICE AND RESISTANCE STATE ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/085950
Kind Code:
A1
Abstract:
A battery device processor estimates the internal resistance of a battery at a reference temperature on the basis of a measured voltage of the battery, a measured current of the battery, the open circuit voltage of the battery and a measured temperature of the battery, and estimates the resistance state of the battery on the basis of the initial resistance at the reference temperature when the battery is in a beginning-of-life state and the estimated internal resistance at the reference temperature.

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Inventors:
YUN SEONGJUN (KR)
KANG TAEKYU (KR)
KIM CHEOLTAEK (KR)
Application Number:
PCT/KR2021/012506
Publication Date:
April 28, 2022
Filing Date:
September 14, 2021
Export Citation:
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Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01R31/389; G01R27/08; G01R31/36; G01R31/367; G01R31/382; G01R35/00
Foreign References:
KR20140125473A2014-10-29
KR20110081604A2011-07-14
US20160054390A12016-02-25
JP5349567B22013-11-20
KR100695973B12007-03-16
KR101989692B12019-06-14
Other References:
See also references of EP 4116723A4
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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