FUEL CELL MODULE AND FUEL CELL SYSTEM

A fuel cell module includes a plurality of power generation cells. The plurality of power generation cells are stacked together in a circle, and a tightening load is applied to the plurality of power generation cells in a circumferential direction. Each of the plurality of power generation cells includes a V-shaped electrically conductive base plate. A first reactant gas flow field is provided between power generation cells that are adjacent to each other. A ridge protruding outward is provided in the base plate to provide the first reactant gas flow field by the ridge, and insulating material is provided on the ridge.