Patent ID: 7641999
Filing Date: 2010-01-05
Classification: H01M,Y02E

Abstract:
1. A fuel cell stack comprising: a box-shaped casing; and a stack body provided in said casing, said stack body being formed by stacking a plurality of unit cells in a stacking direction, said unit cells each including an electrolyte electrode assembly and separators sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including a pair of electrodes, and an electrolyte interposed between said electrodes, wherein said casing comprises: end plates provided at opposite ends of said stack body in the stacking direction; a plurality of side plates provided on sides of said stack body; and coupling pins each for coupling said end plate and said side plate, and wherein said side plates include a first side plate and a second side plate provided adjacent to each other; said first side plate has a side surface disposed in the stacking direction that includes a neutral surface, at least one coupling pin being located on said side surface, and includes a flange for attaching said first side plate to said second side plate; and said first side plate is curved in a direction in which the center of said at least one coupling pin for coupling said first side plate to said end plate is set apart from said neutral surface of said first side plate by a predetermined distance so that said first side plate is curved along a length extending from one end of the side plate to an opposed end of the side plate so that the side plate has a substantially arcuate shape therebetween when a load is applied to the fuel cell stack in the stacking direction.