Fuel cell and method of installing linings on gas manifolds of fuel cell

A method of manufacturing a fuel cell having a cell stack, gas manifolds and linings, which comprises the steps of:

• obtaining linings by forming a phosphoric acid proof resin sheet in a box shape to match the shape of each of said gas manifolds, and forming each lining to have a size smaller than that of the inner plane of each of said gas manifolds by a size substantially corresponding to the size of a thermal expansion of the lining during the operation of the fuel cell;
• installing said linings on the inner planes of said gas manifolds;
• and
• disposing said gas manifolds on planes of said cell stack unit,
• wherein the obtaining step includes a step of bending an external peripheral section of said phosphoric acid proof resin sheet along a brim section at a peripheral section of said each gas manifold, and the installing step includes a step of sandwiching and fixing said linings together with the gas manifold brim section by clamping.

A method of manufacturing a fuel cell having a cell stack, gas manifolds and linings, which comprises the steps of:

• obtaining linings, by forming a phosphoric acid proof resin sheet in a box shape to match the shape of each of said gas manifolds, and forming each of said linings such that said each lining has a size smaller than that of an inner plane of each of said gas manifolds by a size substantially corresponding to a size of a thermal expansion of said linings during an operation of the fuel cell;
• providing either female hooks or male hooks on said linings to be engaged with said hooks installed on said linings, at predetermined positions on the inner plane of each of said gas manifolds;
• installing said linings on the inner planes of said gas manifolds by engaging both the female and male hooks together;
• and
• disposing said gas manifolds on planes of said cell stack unit;
• wherein the obtaining step includes a step of bending an external peripheral section of said phosphoric acid proof resin sheet along a brim section at a peripheral section of each of said gas manifolds, and the installing step includes a step of sandwiching and fixing said linings together with the gas manifold brim section by clamping.

A fuel cell comprising:

• a cell stack unit;
• gas manifolds disposed on planes of said cell stack unit;
• linings prepared by a phosphoric acid proof resin sheet, said linings being to be removably mounted on inner planes of said gas manifolds, each of said linings being formed in advance to have a size smaller than that of an inner plane of each of said gas manifolds by a size substantially corresponding to a size of a thermal expansion of said each lining during an operation of the fuel cell;
• and
• pressure monitoring means for monitoring the pressure between said linings and said gas manifolds.