Patent ID: 11095001

Abstract:
In an assembled battery 1 disclosed herein, unit cells 10A, 10B are electrically connected to each other by way of bus bars 30 that extend along an array direction X of the unit cells. The bus bars 30 of the assembled battery 1 are each provided with a base 32 in which a plurality of terminal insertion holes 34, into which electrode terminals 12, 14 of the unit cells 10A, 10B are inserted, are formed, and with junction projections 36, which are present along the electrode terminals 12, 14, extending from respective regions of the base 32 adjacent to the terminal insertion holes 34. In the assembled battery 1 disclosed herein, the electrode terminals 12, 14 are in surface contact with the junction projections 36, and tips 12a, 14a of the electrode terminals 12, 14 and tips 36a of the junction projections 36 are welded to each other. As a result, the electrode terminals 12, 14 and the bus bars 30 can be welded to each other while a welding state is checked.