Patent ID: 8313872

Claim:
A fuel cell comprising: a cell stack in which a plurality of cells are stacked; a first end plate and a second end plate that respectively contact two ends of the cell stack in a stacking direction of the cells; a plurality of side members that are sandwiched between the first and second two end plates and define a distance between the first and second end plates; a connecting bolt portion that connects the end plates and the side member by at least one bolt, a longitudinal axis of the at least one bolt extends in the stacking direction such that a bolt axial force acts in the stacking direction; and a plurality of stopper portions extending substantially perpendicularly from the first end plate toward the second end plate in a longitudinal axis direction of each of the respective side members, wherein each of the plurality of stopper portions extends along and contacts a plurality of outer side surfaces of each of respective side members, the contacting surfaces of the stopper portions face in a direction intersecting with the stacking direction and are located on an opposite sides of the side members from the cell stack, wherein each of the first and second end plates and each stopper portion are integrally provided, wherein at least one side member includes a caved-in portion that is caved in the stacking direction, and wherein at least one stopper portion includes a projected portion that fits to the caved-in portion.