Power source device, vehicle provided with power source device, and power storage device

A method for manufacturing a power supply device comprising plural battery cells having a rectangular box shape and electrode terminals, an binding member binding a battery stacked member stacking the battery cells, bus bars connecting electrode terminals of the battery cells, and an insulating bus bar holder covering the upper surface of the battery stacked member, the method comprising:

• providing the divided bus bar comprising an intermediate holder at the center portion in the bus bar holder, and side surface holders at the side surfaces of in the bus bar holder;
• binding the upper surface of the side surface holders by the binding member in a state that the side surface holders are disposed at the upper edge portions of the battery stacked member;
• press-fitting and fixing the intermediate holder between the side surface holders by using the press-fitting structure provided at the connecting surface between the intermediate holder and the side surface holder;
• and
• fixing the bus bars which are disposed at positioning guides disposing the bus bars to the electrode terminals of the battery cells.