CHARGING AND DISCHARGING DEVICE

The present disclosure relates to a charging and discharging device comprising: a sensing portion obtaining a status information of a battery cell, and a controller determining whether the battery cell is abnormal using the status information, wherein the controller determines whether the battery cell is abnormal based on comparing a first status information of the battery cell obtained in the N−1th, where N is a natural number of 2 or more, charging cycle of the battery cell and a second status information of the battery cell obtained in the Nth charging cycle following the N−1th charging cycle of the battery cell.