METHOD AND APPARATUS FOR DIAGNOSING BATTERY CELL

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METHOD AND APPARATUS FOR DIAGNOSING BATTERY CELL

This abstract first appeared for US patent application 20240426927 titled 'METHOD AND APPARATUS FOR DIAGNOSING BATTERY CELL

Original Abstract Submitted

discussed are a method and an apparatus for diagnosing a battery cell. the method may include applying, by the apparatus for diagnosing the battery cell, an activation waveform having a predetermined frequency to the battery cell in an activation process, and performing an electrochemical impedance spectroscopy (eis) measurement in a charging section of the activation process. the method may further include, based on the eis measurement, calculating a slope of a reactance of the battery cell in a voltage section of a predetermined range, and diagnosing the battery cell based on the slope.