BATTERY PACK COMPRISING HEATING MEMBER

Disclosed is a battery pack capable of inhibiting the occurrence of temperature deviation between battery cells in a battery cell stack. The battery pack includes a battery cell stack configured to have a structure in which a plurality of battery cells is stacked so as to be in tight contact with each other, a heating member disposed at three outer surfaces of the battery cell stack, among all outer surfaces of the battery cell stack, in the state of being in tight contact therewith, a temperature sensor connected to each of the battery cells, and a battery pack case configured to receive the battery cell stack, the heating member, and the temperature sensors. The heating member is configured to have an integrated structure including a first surface, a second surface, and a third surface.