公开(公告)号：US20240337701A1

公开(公告)日：2024-10-10

申请号：US18289337

申请日：2023-01-03

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Soon Jong KIM ,  Jeong Bin LEE

IPC: G01R31/392 ,  G01R19/00 ,  G01R19/10 ,  G01R19/30 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/396

CPC classification number: G01R31/392 ,  G01R19/003 ,  G01R19/10 ,  G01R19/30 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/396

Abstract: The present invention discloses an apparatus and method for detecting a deteriorated battery cell including a measurement unit that measures a state of a battery, an estimation unit that estimates a state of health (SOH) of the battery, a diagnosis setting unit that sets a diagnosis start condition, a diagnosis section, and a determination condition of the deteriorated battery cell according to the SOH of the battery, a diagnosis performance decision unit that determines a detection performance condition of the deteriorated battery cell after an end of charging/discharging of the battery, and a deterioration determination unit that determines the deteriorated battery cell by calculating a voltage difference in the charging and discharging end section and comparing the measurement value with a set value.