Patent ID: 8211582

Claim:
A fuel cell system comprising: a fuel cell body comprising: an electricity generating unit that generates electricity by a reaction of air and fuel; and a middle plate for supplying the fuel to the electricity generating unit, the middle plate comprising: a plurality of unit sections; a supply passage formed inside the middle plate; a supply opening for supplying the fuel to the supply passage; a plurality of inlet openings, each of the inlet openings formed on one of the unit sections, the fuel supplied to the supply passage being supplied to the unit sections through the inlet openings, one of the inlet openings, which is located farther from the supply opening than another of the inlet openings, having a smaller opening area than the other of the inlet openings; a discharge passage formed inside the middle plate; a plurality of outlet openings, each of the outlet openings formed on one of the unit sections, the fuel discharged from the unit sections being discharged to the discharge passage through the outlet openings, a total area of the outlet openings being the same as a total area of the inlet openings, all of the outlet openings having substantially the same opening area; and a discharge opening for discharging the fuel from the discharge passage.