Patent ID: 8221926

Claim:
A fuel cell comprising a plurality of unit cells having been stacked on each other, each of the plurality of unit cells comprising: a first cell having a first anode, a first cathode, and a first electrolyte between the first anode and the first cathode; a first fuel gas path, disposed between a first fuel gas inlet header and a first fuel gas outlet header, for providing a fuel gas to the first anode of the first cell; a first oxidant gas path, disposed between a first oxidant gas inlet header and a first oxidant gas outlet header, for providing an oxidant gas to the first cathode of the first cell; a first plate having a first surface and a second surface at opposite side to the first surface, the first fuel gas path being between the first surface of the first plate and the first anode of the first cell; a second plate having a third surface and a fourth surface at opposite side to the third surface, the first oxidant gas path being between the third surface of the second plate and the first cathode of the first cell; a second cell having a second anode, a second cathode, and a second electrolyte between the second anode and the second cathode; a second fuel gas path, disposed between a second fuel gas inlet header and a second fuel gas outlet header, for providing the fuel gas to the second anode of the second cell; a second oxidant gas path, disposed between a second oxidant gas inlet header and a second oxidant gas outlet header, for providing the oxidant gas to the second cathode of the second cell; a third plate having a fifth surface and a sixth surface at opposite side to the fifth surface, the second fuel gas path being between the fifth surface of the third plate and the second anode of the second cell; a fourth plate having a seventh surface and an eighth surface at opposite side to the seventh surface, the second oxidant gas path being between the seventh surface of the fourth plate and the second cathode of the second cell; and a heat medium path, disposed between a heat medium inlet header and a heat medium outlet header, for distributing a heat medium, the heat medium path being between the fourth surface of the second plate and the sixth surface of the third plate, wherein the second fuel gas inlet header is disposed to overlap with either the first oxidant gas inlet header or the first oxidant gas outlet header in a perspective from a direction of the stacking the unit cells.