BATTERY DIAGNOSTIC DEVICE AND OPERATING METHOD THEREOF

WIPO Patent Application WO/2024/101693

A1

A battery diagnostic device according to an embodiment disclosed in this document comprises: an acquisition unit that acquires respective first voltage values of a plurality of battery units; an identification unit that identifies second voltage values of different standby sections among the first voltage values; a determination unit that determines a voltage slope representing the degree of change over time in the second voltage values of each of the plurality of battery units, and determines a standard score (Z-score) of the voltage slope for each of the plurality of battery units by using the average and the standard deviation of the plurality of voltage slopes corresponding to each of the plurality of battery units on a one-to-one basis; and a diagnosis unit that selects the battery units having the standard score outside a first reference range and having the voltage slope outside a second reference range, among the plurality of battery units, and diagnoses at least some of the selected battery units as abnormal battery units.

KIM WON KYUNG (KR)
LEE JEONG BIN (KR)
YOON SUNG YUL (KR)
KIM IN SIK (KR)
KIM SOON JONG (KR)
KWON KI WOOK (KR)
SONG YOUNG SEOK (KR)

PCT/KR2023/015922

May 16, 2024

October 16, 2023

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LG ENERGY SOLUTION LTD (KR)

G01R31/392; G01R19/00; G01R19/10; G01R19/12; G01R19/165; G01R19/30; G01R31/3842; G01R31/396; G01R31/56; G08B21/18

KR20220048782A	2022-04-20
KR20220019637A	2022-02-17
KR102441800B1	2022-09-13
CN113442787A	2021-09-28
KR20220126920A	2022-09-19

BAE, KIM & LEE IP (KR)

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