BATTERY PACK

An embodiment battery pack includes a battery module including a battery cell stack in which a plurality of battery cells are stacked in a predetermined direction, upper and lower cooling apparatuses disposed in upper and lower portions of the battery module, respectively, the upper and lower cooling apparatuses being configured to cool heat generated from the battery module, an upper cooling plate disposed between the battery module and the upper cooling apparatus, a lower cooling plate disposed between the battery module and the lower cooling apparatus, an upper gap filler filling a space between the battery cell stack and the upper cooling plate, and a lower gap filler filling a space between the battery cell stack and the lower cooling plate, wherein the upper and lower gap fillers each include a phase-change material.