Patent ID: 7588851

Claim:
A fuel cell stack structure comprising: a laminated-power generation cell body constructed by laminating a predetermined number of power generation fuel cells, each having a membrane-electrode assembly and a separator, the separator has a gas flow channel and a gas manifold which connects between gas flow channels of different power generation fuel cells of the predetermined number of power generation fuel cells, and feed and exhaust pipes being provided on only one-side end of the laminated-power generation cell body, gas is supplied to the laminated-power generation cell body through the feed pipe, and gas discharged from the laminated-power generation cell body flows through the exhaust pipe, and a gas flow channel layer having two faces which is provided outside of the laminated-power generation cell body, the gas flow channel layer being provided between the laminated-power generation cell body and a end plate, and communicates between the feed and exhaust pipes, the laminated-power generation cell body having a power generation portion; wherein the gas flow channel layer is a layer which has no membrane-electrode assemblies, which communicates between an inlet side and outlet side of a fuel gas manifold of the separator, and communicates between an inlet side and outlet side of a gas manifold of the separator, wherein both a fuel gas flow channel and an oxidative gas flow channel are formed in only one face of the gas flow channel layer, and wherein condensate originating from the feed pipe flows into the gas flow channel.