Patent ID: 11940501
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 9:
10. An apparatus for diagnosing low voltage failure of a secondary battery cell, the apparatus comprising:
a charging unit configured to charge a battery cell to have a preset voltage according to a preset charging condition, after a pre-aging process and before subjecting the pre-aged battery cell to a subsequent charging under a predetermined voltage condition, wherein the preset voltage is set to a voltage of which a voltage change rate with respect to a state of charge (SOC) is greater than or equal to a preset reference value, and wherein the subsequent charging is an initial charging of a formation process;
a measurement unit configured to measure a parameter for determining the low voltage failure of the battery cell; and
a control unit configured to compare the measured parameter with a reference parameter and determine the low voltage failure of the battery cell on the basis of a comparison result.