Fuel cell stack

摘要

A fuel cell stack includes a stacked body, a first terminal plate, a first insulating plate, a first end plate, and a first insulating collar member. The first insulating collar member includes a first tubular portion and a first flange portion. The first tubular portion is provided in the first fluid manifold hole. The first flange portion is disposed at one end of the first tubular portion. Another end of the first tubular portion projects to an outside of the first fluid manifold hole and is in slidably contact with an inner circumferential surface of the first outer manifold member via an outer circumferential surface sealing member. The first flange portion is in contact with the first insulating plate via an end-face sealing member.

主权项

1. A fuel cell stack comprising:
a stacked body including a plurality of fuel cells which are stacked in a stacking direction, each of the fuel cells comprising:
an electrolyte-electrode assembly having a pair of electrodes and an electrolyte disposed between the pair of electrodes in the stacking direction; anda pair of separators between which the electrolyte-electrode assembly is sandwiched in the stacking direction; a first terminal plate provided at a first end of the stacked body in the stacking direction; a first insulating plate provided at the first end of the stacked body in the stacking direction; a first end plate provided at the first end of the stacked body in the stacking direction, the first end plate including a first fluid manifold hole; a first outer manifold member fixed to the first end plate; a first insulating collar member comprising:
a first tubular portion through which one of a cooling medium and a reactant gas is to flow to the first outer manifold member in the stacking direction, the first tubular portion being provided in the first fluid manifold hole; anda first flange portion disposed at one end of the first tubular portion, another end of the first tubular portion projecting to an outside of the first fluid manifold hole and being in slidable contact with an inner circumferential surface of the first outer manifold member via an outer circumferential surface sealing member, the first flange portion being in direct contact with the first insulating plate and is sealed thereto via an end-face sealing member; and a first spacer member provided between the first end plate and the first insulating plate to adjust a thickness of the fuel cell stack in the stacking direction.