BATTERY PACK AND VEHICLE INCLUDING THE SAME

Discussed is a battery pack, including a plurality of battery cells; a bus bar assembly having a first side and a second side, the second side of the bus bar assembly provided to a first side of the plurality of battery cells and electrically connected to the plurality of battery cells; a cooling unit disposed at the second side of the bus bar assembly and arranged between the plurality of battery cells along a longitudinal direction of the battery pack; a side structure unit configured to accommodate the cooling unit and the plurality of battery cells and configured to form a first section of an outer surface of the battery pack; and a filling member configured to form a second section of the outer surface of the battery pack together with the first section of the outer surface of the battery pack formed by the side structure unit, the filling member further being filled in a space between the cooling unit and the plurality of battery cells.