Patent ID: 8974980
Filing Date: 2015-03-10
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a membrane-electrode-assembly having a stack direction; a frame body positioned around a periphery of the membrane-electrode-assembly, the frame body having frame manifold holes extending completely through the frame body in the stack direction; and a pair of separators sandwiching the frame body and the membrane-electrode-assembly in the stack direction, wherein: each of the pair of separators has separator manifold holes extending therethrough in the stack direction; each of the pair of separators has a structure for circulating reactant gas between the frame body and the separators; and a positioning projection extends from opposing surfaces of the frame body from an inner peripheral edge of at least two frame manifold holes, each positioning projection having: an anode side portion projecting completely through an adjacent separator manifold hole of one of the pair of separators and covering an inner peripheral surface of the adjacent separator manifold hole; and a cathode side portion projecting completely through an adjacent separator manifold hole of another of the pair of separators and covering an inner peripheral surface of the adjacent separator manifold hole of the other of the pair of separators; wherein the anode side portions of each positioning projection are aligned in the stack direction, the cathode side portions of each positioning projection are aligned in the stack direction, and the adjacent separator manifold holes of the pair of separators are aligned in the stack direction.