Patent ID: 8221929

Claim:
A fuel cell stack comprising: a stack body formed by stacking a plurality of electrolyte electrode assemblies and separators in a stacking direction, the electrolyte electrode assemblies each including a pair of electrodes, and an electrolyte interposed between the electrodes; and a box-shaped casing containing the stack body, the casing comprising: end plates provided at opposite ends of the stack body in the stacking direction; a plurality of side plates provided on sides of the stack body; coupling members for coupling the end plates and the side plates, wherein at least the end plates are positioned within an outer profile line formed by the side plates; and insulating plates located at each end of the stack body in the stacking direction and located between the stack body and the end plates, the insulating plates including corners that protrude outwardly beyond the corners of the end plates and are positioned within an inner wall surface of the box-shaped casing so as to prevent contact between the plurality of side plates and the end plates.