US Patent 10511045 Fuel cell and fuel cell system

A fuel cell includes a stacked body formed by stacking a plurality of unit cells, an end plate arranged on at least one end of the stacked body in a stacking direction, a fuel cell case including an opening portion and incorporating the stacked body, wherein the opening portion has a substantially polygonal outer circumference shape with a plurality of corners, and a plurality of types of fasteners with different load resistances that fix the end plate, closing the opening portion of the fuel cell case, to the fuel cell case. A fastener, of the plurality of types of fasteners, of a type with a highest load resistance is arranged at at least one of the plurality of corners of the opening portion.