BATTERY MODULE

Battery module includes: cell stack in which the plurality of cells each having output terminal are arrayed; bus bar that electrically connects output terminals of cells to each other, and bus bar plate that covers the surface of cell stack on which output terminal is disposed, that includes opening at a position overlapping with respective output terminals, bus bar plate in which bus bar is disposed in opening. When one of bus bar plate and cell stack is a first member and the other is a second member, the first member includes biasing part, and the second member includes biasing receiver. The first member and the second member are biased in opposite directions to each other by biasing part pressing the second member, and displacement of the first member and the second member is regulated by biasing receiver abutting on the first member.