Fuel cell stack
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKoji Okazaki, Yoshinori Wariishi
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Abstract
A fuel cell stack comprises a power-generating cell and a cooling cell which are stacked, an insulating means for electrically insulating the cooling medium supplied into the cooling cell from the power-generating cell, and a conducting means for electrically connecting the power-generating cells arranged with the cooling cell interposed therebetween to one another. Accordingly, the earth fault and the liquid junction, which would be otherwise caused by cooling medium, is reliably avoided with a simple structure, making it possible to maintain desired power generation performance.
Claims9
A fuel cell stack comprising:
- a power generating cell which has a joined unit including an electrolyte interposed between an anode electrode and a cathode electrode, said joined unit being interposed between separators so that fuel gas is supplied to said anode electrode, while oxygen-containing gas is supplied to said cathode electrode;
- a pair of collecting electrodes which are electrically connected to a predetermined number of said power-generating cells in an integrated manner;
- a cooling cell to which cooling medium for cooling said power-generating cell is supplied and which is interposed between said collecting electrodes;
- an insulating means for electrically insulating said cooling medium from said power-generating cell and said collecting electrodes;
- and
- a conducting means for electrically connecting said power-generating cells arranged with said cooling cell interposed therebetween, or for electrically connecting said power-generating cell and said collecting electrodes to one another.
Dependencies are inferred from the claim text.