Apparatus And Method For Diagnosing Battery State

Abstract: An apparatus for diagnosing a battery state according to one embodiment of the present invention comprises: a voltage measurement unit configured to measure a voltage of a battery and, when the measured voltage reaches a first reference voltage set in advance , measure a target voltage for the battery; a resistance measurement unit configured to measure a target resistance of the battery when the measured voltage reaches a second reference voltage set in advance ; and a control unit configured to determine a voltage increase/decrease pattern for the target voltage on the basis of a voltage profile in which the target voltage is stored, determine a resistance increase/decrease pattern for the target resistance on the basis of a resistance profile in which the target resistance is stored, and diagnose the state of the battery from the voltage increase/decrease pattern and the resistance increase/decrease pattern according to a preset diagnostic rule.

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