The present invention relates to a battery module in which at least one battery cell comprises an electrode tab consisting of a negative electrode tab and a positive electrode tab, wherein a sensing assembly, which is located in a space between the negative and positive electrode tabs, and terminals, which are respectively connected to the electrode tabs of the outermost battery cell, are mounted on a lateral surface where the electrode tabs of the battery module are located, wherein the terminal is welded and connected to the surface located inside the battery module among both surfaces of the negative and positive electrode tabs.