APPARATUS AND METHOD FOR DIAGNOSING A BATTERY

A method for diagnosing a battery having a positive electrode to which an active material is applied includes generating a differential profile representing a corresponding relationship between a differential capacity obtained by differentiating a capacity of the positive electrode with respect to a potential of the positive electrode and the potential of the positive electrode, for each predetermined diagnosis cycle; generating a plurality of Gaussian curves that form a curve corresponding to the differential profile when combined with each other; generating diagnosis information on a redox reaction amount of one or more elements among a plurality of different elements included in the active material using the plurality of Gaussian curves; and diagnosing the battery based on the diagnosis information.