Patent ID: 8288051

Claim:
A solid oxide fuel cell comprising: a separator which includes a fuel gas passageway and an oxidant gas passageway thereinside; and a plurality of power generation cells arranged in a parallel connection state on the same plane, each of the power generation cells having a solid electrolyte layer sandwiched between a fuel electrode layer and an oxidant electrode layer, wherein the plurality of power generation cells are laminated by the separator, wherein the solid oxide fuel cell includes an oxidant gas manifold and a fuel gas manifold communicatively connected to the oxidant gas passageway and the fuel gas passageway of the separator and penetrating in a lamination direction, wherein the separator includes an oxidant gas hole communicatively connected to the oxidant gas manifold and a fuel gas hole communicatively connected to the fuel gas manifold, wherein a first end of the oxidant gas passageway is communicatively connected to the oxidant gas hole, and a second end of the oxidant gas passageway is open at a portion facing the respective oxidant electrode layer, wherein the oxidant gas passageway is divided at the second end thereof or a plurality of oxidant gas passageways are provided at the second end thereof, wherein a first end of the fuel gas passageway is communicatively connected to the fuel gas hole, and a second end of the fuel gas passageway is open at a portion facing the respective fuel electrode layer, wherein the fuel gas passageway is divided at the second end thereof or a plurality of fuel gas passageways are provided at the second end thereof, wherein the plurality of power generation cells are arranged up-down and left-right symmetrically at a center portion of the separator, wherein the oxidant gas hole and the fuel gas hole are arranged, respectively, in a pair of corner portions of the separator, and wherein the oxidant gas passageway starts at an edge portion of the separator, extends to a central portion of the separator at a position enclosed by the power generation cells, is divided at the central portion, and is introduced in a portion facing the respective oxidant electrode layer.