| abstract |
In an assembled battery ( 10 ), a plurality of rechargeable unit cells ( 12 ), each of which is provided with an electrode body ( 30 ) that has a positive electrode ( 32 ) and a negative electrode ( 34 ), a container ( 14 ) that houses the electrode body ( 30 ) and an electrolyte, and a positive electrode terminal ( 15 ) and a negative electrode terminal ( 16 ) which are arranged on an outside of the container ( 14 ), the rechargeable unit cells being connected in series. The plurality of unit cells ( 12 ) are arranged in a predetermined direction and fastened together while a predetermined load is applied in the arranging direction. Insulating filler ( 25 ) is inserted into a gap between the electrode body ( 30 ) and an inside wall surface of the container ( 14 ) of at least one of the unit cells ( 12 ), and a thickness in the arranging direction of each of the unit cells ( 12 ) in the fastened state is constant. |