BATTERY MODULE AND METHOD FOR PRODUCING THE BATTERY MODULE

Provided is a high-performance, high-quality battery module including plurality of electrode bodies connected in series. The battery module disclosed herein has a plurality of electrode bodies that include positive electrodes and negative electrodes, connecting terminals that connect the plurality of electrode bodies in series, and a film exterior body that covers the plurality of electrode bodies and the connecting terminals. The electrode bodies each includes a pair of flat surfaces and are made into a module by being superimposed on each other, such that the flat surfaces face each other. The connecting terminal is made up of a cladding material resulting from joining of a first metal, which is a metal of identical type to that of the positive electrode, and a second metal, which is a metal of identical type to that of the negative electrode.