Patent attributes
A battery device includes: a battery stack including a plurality of battery cells arranged along a predetermined straight direction; a pair of end members that are spaced apart from each other in the straight direction and sandwich the battery stack to prevent battery cells from moving; a temperature adjusting part which includes a heat exchange part for exchanging heat with the battery stack and a flowing passage in which a fluid for exchanging heat with the heat exchange part is flowing; and an end member fixing part to which the end members are fixed. The temperature adjusting part and the end member fixing part are integrally united into a single piece structure made of metal.