Patent ID: 8557448

Claim:
A fuel cell, comprising: an electrolyte assembly; and a separator including: one face as a gas flow path-forming face with a gas flow path formed thereon, wherein a reactive gas flows through the gas flow path, and the other face as a refrigerant flow path-forming face with a refrigerant flow path formed thereon, wherein a refrigerant flows through the refrigerant flow path, wherein a recess-protrusion shape provided on the one face is reverse to a protrusion-recess shape provided on the other face, wherein the gas flow path-forming face of the separator has multiple linear gas flow paths that are arranged in parallel to one another, and a gas flow path connection structure that divides the multiple linear gas flow paths into plural linear gas flow path groups and connects adjacent linear gas flow path groups in series among the plural linear gas flow path groups, wherein a gas flow direction between the adjacent linear gas flow path groups is a serpentine pattern, wherein the refrigerant flow path-forming face has multiple linear refrigerant flow paths that are formed as a reverse structure of the multiple linear gas flow paths on the gas flow path-forming face, wherein a refrigerant flow path connection structure that is formed as a reverse structure of the gas flow path connection structure on the gas flow path-forming face, the refrigerant flow connection structure communicating with the respective multiple linear refrigerant flow paths, wherein the gas flow path connection structure has a gas flow path parting beam to divide the multiple linear gas flow paths into the plural linear gas flow path groups, wherein a width of a top of the gas flow path parting beam (W 5 ) is substantially equal to a sum of a width of a pitch of a gas flow path forming beam (W 2 ) multiplied by a positive integer (n×W 2 ) and a width of a top of the gas flow path forming beam (W 1 ) multiplied by the positive integer incremented by one ((n+1)×W 1 ), in order for the gas flow path parting beam to have a higher contact pressure against the electrolyte assembly than a contact pressure of the gas flow path forming beam, and wherein the gas flow path parting beam is provided to have a greater height than a height of the gas flow path forming beam in a laminating direction of the electrolyte assembly and the separator.