BATTERY MODULE AND METHOD OF MANUFACTURING BATTERY MODULE

A battery module includes: a plurality of secondary cells; a bus bar connecting the plurality of secondary cells; a side plate fixing one side of the plurality of secondary cells; and end plates connected to outermost ones of the plurality of secondary cells at respective ends of the plurality of secondary cells. Each of the end plates includes: a first end plate; a second end plate; and a spring connected between the first end plate and the second end plate.