BATTERY MODULE HAVING IMPROVED ENERGY DENSITY AND BATTERY PACK INCLUDING THE SAME

The present invention relates to a battery module having improved energy density and a battery pack including the same, and more particularly to a battery module including a unit module stack, in which unit modules, each of which includes one or more battery cells (700) and a cell cartridge (600) configured to receive the battery cells (700) therein, are horizontally or vertically stacked on the basis of the ground; a pair of insulation sheets (500) located at outermost sides of the unit module stack; and a pair of end plates (400) located outside the pair of insulation sheets (500), wherein each of the pair of end plates (400) is provided with a first protuberance (410) protruding in a direction in which the unit module stack is located, and each of the pair of insulation sheets (500) is provided with a first receiving portion (510) configured to receive the first protuberance (410) of a corresponding one of the end plates (400), the first receiving portion having an identical shape to the first protuberance, and a battery pack including the same.