US 11,656,292 B2
Apparatus and method for detecting abnormality in battery
Joon Keun Yoon, Ulsan (KR); and Seung Beom Yoon, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Aug. 3, 2021, as Appl. No. 17/392,614.
Claims priority of application No. 10-2020-0098093 (KR), filed on Aug. 5, 2020.
Prior Publication US 2022/0043069 A1, Feb. 10, 2022
Int. Cl. G01R 31/392 (2019.01)
CPC G01R 31/392 (2019.01) 14 Claims
OG exemplary drawing
 
1. An apparatus for detecting an abnormality in a battery, the apparatus comprising:
a voltage sensor configured to detect voltages of a plurality of battery cells in a battery; and
a controller configured to receive the voltages detected by the voltage sensor, and to determine whether the plurality of battery cells are abnormal on the basis of voltage changes with respect to charge amounts of the plurality of battery cells during charging of the battery,
wherein the controller is further configured to determine an abnormal battery cell based on a “dQ/dV” value, and
wherein dQ is a differentiated charge amount of each battery cell of the plurality of battery cells and dV is a differentiated voltage of each battery cell of the plurality of battery cells.