Patent ID: 7491459
Filing Date: 2009-02-17
Classification: H01M,Y02E

Abstract:
1. A polymer electrolyte fuel cell equipped with: a cell comprising: a cell stack in which a plurality of said cells is stacked; and a cooling water flow passage, through which cooling water flows, formed on at least the rear surface of one from among the anode-side separator and the cathode-side separator of at least a prescribed cell in said cell stack; wherein said fuel gas, oxidizing gas, and cooling water flow through said fuel gas passage, oxidizing gas passage, and cooling water passage, respectively, in a manner not running counter to gravity and wherein the separator provided with the cooling water flow passage includes an inlet manifold hole to which an upstream end of the cooling water flow passage is connected and which supplies the cooling water to the cooling water flow passage, the inlet manifold hole runs through said separator in the direction of thickness, and a constriction is provided on the separator so as to be located at the inlet manifold hole.