FUEL CELL STACK DESIGN FOR REDUCING EFFECT OF EXCESS WATER

摘要

There is described a fuel cell stack comprising: a plurality of flow field plates each having at least one dual manifold structure comprising a supply aperture, a distribution aperture and a transitory channel fluidly connecting the supply aperture to the distribution aperture, the supply aperture forming an elongated supply manifold extending through the fuel cell stack and the distribution aperture forming an elongated distribution manifold extending through the fuel cell stack and communicating a fluid to a flow field of each of the flow field plates; and a recessed portion at a bottom of the fuel cell stack after a last fuel cell in the fuel cell stack for collecting an excess amount of water therein.