Patent ID: 7993798

Claim:
A fuel cell manufacturing method for manufacturing a fuel cell, comprising: a process of feeding a polymer electrolyte membrane formed in strip form, and having conveyance holes formed in series at fixed intervals on a side portion thereof in a lengthwise direction, by rotating a conveyance roller comprising on an outer periphery thereof projections which engage with the conveyance holes, the polymer electrolyte membrane comprising positioning marks formed at predetermined intervals on a side portion thereof in the lengthwise direction; and a process of positioning and fixing any of a catalyst layer, a gas diffusion layer, and a separator on a surface of the polymer electrolyte membrane on the basis of the conveyance holes and/or the positioning marks, a process of forming in advance on a surface of the polymer electrolyte membrane a catalyst layer at predetermined intervals in the lengthwise direction and of forming the positioning marks in accordance with the formation position of the catalyst layer, and a process of using a sensor to detect a displacement speed of the conveyance holes and passage of the positioning marks at a predetermined point through which the polymer electrolyte membrane passes; and a process of determining a timing for positioning and fixing any of the catalyst layer, the gas diffusion layer, and the separator on the surface of the polymer electrolyte membrane on the basis of the displacement speed of the conveyance holes and a detection timing of the positioning marks.