BATTERY PACK COMPRISING MOUNTING STRUCTURE

Disclosed is a battery pack having improved manufacturing efficiency, high energy density and enhanced product stability. The battery pack includes a mounting structure including a first frame formed in a plate shape whose both ends are bent upward to form an inner space and a second frame formed in a plate shape whose both ends are bent downward to form an inner space; a first battery module group accommodated in the inner space of the first frame and including a plurality of battery modules; and a second battery module group accommodated in the inner space of the second frame and including a plurality of battery modules.