Patent ID: 7537854
Filing Date: 2009-05-26
Classification: H01M,Y02E,Y02P

Abstract:
1. A stack for a polymer electrolyte fuel cell, comprising: a plurality of stacked unit cells, each unit cell including a conductive separator plate formed with flow passages and manifolds for gas supply, a coupler attached to both sides of the separator plate and formed with openings and penetrating passages to expose the manifolds and the flow passages, and a membrane-electrode assembly disposed between the combined separator plate and coupler and another coupler, wherein a periphery of the manifolds generally coincides with a periphery of the openings of the coupler, the coupler comprising: one side plate formed with at least one of the openings and at least one of the penetrating passages to expose the manifolds and the flow passages of the separator plate and with coupling bosses along a periphery thereof, and another side plate formed with another of the openings and another of the penetrating passages to expose the manifolds and the flow passages of the separator plate and with coupling holes for receiving the coupling bosses of the one side plate along a periphery thereof.