BATTERY MODULE AND METHOD FOR MANUFACTURING BATTERY MODULE

A battery module according to an aspect of the present disclosure includes a plurality of sub-battery assemblies spaced apart from each other in a front-back direction; and a case assembly configured to accommodate the plurality of sub-battery assemblies, wherein the case assembly is formed to extend in the front-back direction and includes a side case that forms a side surface of the case assembly, and the side case is disposed on the side surfaces of the plurality of sub-battery assemblies.