BATTERY MANAGEMENT DEVICE, OPERATING METHOD THEREOF, AND BATTERY PACK

A battery pack according to an embodiment disclosed herein may include a plurality of battery cells, a first material positioned between the plurality of battery cells, a piezoelectric sensor adjacent to the first material, a temperature sensor configured to detect temperatures of the plurality of battery cells, and a battery management apparatus configured to determine abnormality of the plurality of battery cells, abnormality of the piezoelectric sensor, and abnormality of the temperature sensor based on information received from the piezoelectric sensor and the temperatures of the plurality of battery cells.