| 摘要 |
PURPOSE:To improve the cooling capability of a fuel cell cooling body by manufacturing the cooling body with a metal having good heat conduction, and supplying a cooling media to the cooling tube of the cooling body. CONSTITUTION:The frame plate 31 of a cooling body 21 provided in a cell stack is manufactured from a metal material having a thermal expansion coefficient nearly equal to the coefficient of a material used for the cell stack. Also, cooling tubes 23 arranged in parallel and constituting the inner part of the cooling body 21 are pipes made of a metal material having the same thermal expansion coefficient as the frame plate 31. Furthermore, a space 27 between a plurality of the cooling tubes 2a and the surrounding frame plate 31 is filled with a filler 28 comprising metal powder having a good heat conductivity and a metal fiber. Heat generated within a fuel cell, therefore, is efficiently transmitted to the cooling tubes 23 via the frame plate 31 of the cooling body 21, the metal powder and the metal fiber, and released outside via a cooling media flowing and circulating through the aforesaid cooling tubes 23. According to this construction, cooling capability can be improved. |
