A battery module according to an embodiment of the present disclosure comprises: a battery cell stack in which a plurality of battery cells are stacked, a U-shaped frame accommodating the battery cell stack and having an opened upper portion, an upper plate covering the battery cell stack on the opened upper portion of the U-shaped frame, a thermally conductive layer located between the U-shaped frame and the battery cell stack, and a structural adhesive layer located between the upper plate and the battery cell stack.