Patent ID: 11959969
Assignee: LG ENERGY SOLUTION, LTD.
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G

Claim 15:
16. A method for diagnosing a battery, comprising:
a voltage measurement step of measuring, by an apparatus for diagnosing, a voltage between an input terminal and an output terminal of a battery cell of the battery;
a calculation step of calculating, by the apparatus for diagnosing a battery, a target statistical value indicating a state of the battery cell based on the voltage measured in the voltage measurement step, and calculating a cumulative statistical value by accumulating target statistical values of the battery cell during an analysis period;
a first diagnosis step of determining, by the apparatus for diagnosing, whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value and counting a number of times of cumulative error when it is determined that the error has occurred in the battery cell through the cumulative determination operation; and
controlling the battery based on the diagnosis from the first diagnosis step.