Title:
APPARATUS FOR CALCULATING DEPTH OF CHARGE OF BATTERY, AND OPERATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/136512
Kind Code:
A1
Abstract:
An apparatus for calculating the depth of charge of a battery according to an embodiment disclosed in the present document may comprise: an information obtaining unit for obtaining an open circuit voltage (OCV) value according to a state of charge (SOC) of a battery cell and information on a voltage value according to the SOC during charging of the battery cell; a resistance calculation unit for calculating an internal resistance value according to the SOC during charging of the battery cell on the basis of the information on the voltage value according to the SOC during charging of the battery cell and the open circuit voltage value according to the SOC of the battery cell; and a charge depth calculation unit for calculating the depth of charge of a negative electrode of the battery cell on the basis of the internal resistance value.
Inventors:
YU JEONG IN (KR)
YOON YEO KYUNG (KR)
KIM YONG JUN (KR)
YOON YEO KYUNG (KR)
KIM YONG JUN (KR)
Application Number:
PCT/KR2022/021563
Publication Date:
July 20, 2023
Filing Date:
December 29, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01R31/389; G01R19/165; G01R27/08; G01R31/36; G01R31/3842
Foreign References:
| KR20170006400A | 2017-01-18 | |||
| KR20170086876A | 2017-07-27 | |||
| KR20210141219A | 2021-11-23 | |||
| US20050242777A1 | 2005-11-03 | |||
| EP2952922A1 | 2015-12-09 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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