| 摘要 |
Disclosed is a fuel cell stack securing excellent performance and durability by supplying cooling water to the fuel cell stack through a design change of a laminated structure of a metal separator so that protruding parts meet through molding a flow path and cooling water flows inside the fuel cell stack. According to the present invention, the fuel cell stack with excellent cooling performance comprises: metal separators wherein at least two are vertically stacked, having a cooling water flow path to which cooling water is supplied, an air flow path to which air is supplied, and a reaction gas flow path to which hydrogen is supplied; and a membrane-electrode assembly interposed between the metal separators. As a portion of the metal separators is cornerwise stacked from each other, a passage is comprised for cooling water to smoothly flow into the cooling water flow path, while the cooling water is distributed to up and down along with the cooling water flow path in vertical direction. |
