Battery Module

Provided is a battery module capable of keeping a joint strength high at a joint between dissimilar metals of a busbar. A battery module of the present invention includes a plurality of battery cells each having cell terminals and , and a busbar A joining the terminals of the battery cells . The busbar A has a plurality of connection face portions and each connected to a corresponding one of the terminals and of the battery cells ; a plurality of rising portions each rising from a corresponding one of the plurality of connection face portions and ; and a connection portion connecting the plurality of rising portions. The busbar includes a copper portion including copper and an aluminum portion including aluminum, and a joint between the copper portion and the aluminum portion are located on the connection face portion