Battery Diagnosis Apparatus, Battery Diagnosis Method, And Battery Diagnosis System

Abstract: According to some embodiments disclosed in the present document, provided is a battery management apparatus configured to: receive a plurality of rest voltages respectively for a plurality of battery cells during a rest period after charging or discharging of the plurality of battery cells has been completed; calculate a plurality of voltage deviations respectively for the plurality of battery cells on the basis of a difference between a representative value of the plurality of rest voltages and each of the plurality of rest voltages respectively for the plurality of battery cells; calculate rates of changes of the plurality of voltage deviations respectively for the plurality of battery cells; and diagnose a state of at least one battery cell from among the plurality of battery cells on the basis of the rate of change of the at least one battery cell over time.

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