| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell stack having a simple configuration capable of supplying a cooling medium over the whole surface area of a power generation part and suppressing local deterioration due to ununiformity of the temperature and generation of retention water as much as possible.SOLUTION: A fuel cell stack 10 is formed by laminating a plurality of fuel cells 11. An opening shape of a cooling medium inlet communication hole 22a constituting the fuel cell 11 is set to a long rectangular form along the flow direction of a cooling medium passage 38. In the cooling medium inlet communication hole 22a, a rib part 22a (rib) dividing a rectangular shape into a first region 22a1 and a second region 22a2 is provided in an intermediate portion of the rectangular shape in the longitudinal direction. |
