Battery Diagnosis Apparatus And Battery Diagnosis Method

Abstract: Provided are a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus according to the present invention comprises: a data acquisition unit for acquiring a first target full cell profile showing a correspondence relationship between the capacity factor and voltage of a target cell while a first electrical stimulus is applied to the target cell; and a control circuit for generating an estimated full cell profile on the basis of the first target full cell profile and an overpotential profile. The control circuit determines a first performance factor group as a primary estimation result for the charging and discharging performance of the target cell by applying a cell diagnosis logic to the estimated full cell profile. The control circuit determines a second performance factor group as a secondary estimation result for the charging and discharging performance of the target cell by applying a factor correction model to the first performance factor group. The second performance factor group includes an estimation result of a negative electrode participation end point of the target cell.

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