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1. (WO1993017465) PILE A COMBUSTIBLE A COLLECTEURS MULTIPLES
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is claimed is:

1. A planar electrolytic fuel cell comprising a plurality of manifolds that penetrate layers of the fuel cell, the manifolds distributed across the planar surface of the fuel cell and providing for communication of reactant gases to the fuel cell.

2. A planar fuel cell comprising an anode layer and a cathode layer, the anode layer comprising a plurality of fuel openings and the cathode layer comprising a plurality of oxidant openings, the fuel openings being distributed across the anode layer and the oxidant openings being distributed across the cathode layer.

3. The fuel cell of claim 2 where the fuel openings are distributed across the anode layer whereby the flow path length between each fuel opening is less than the planar dimensions of the cell.

4. The fuel cell of claim 2 where the oxidant openings are distributed across the cathode layer whereby the flow path length between each oxidant opening is less than the planar dimensions of the cell.

5. The fuel cell of claim 2 where the fuel cell comprises an anode manifold extending essentially
perpendicular to the plane surface of the cell layers, the anode manifold comprising said fuel openings, and the anode manifold comprising seal members in the cathode layer.

6. The fuel cell of claim 5 where the seal members prevent communication of fuel passing through the anode manifold with the cathode layer.

7. The fuel cell of claim 2 where the fuel cell comprises a cathode manifold extending perpendicular to the plane surface of the cell layers, the cathode manifold
comprising said oxidant openings, and the cathode manifold comprising seal members in the anode layer.

8. The fuel cell of claim 2 where the seal members prevent communication of oxidant gas passing through the cathode manifold with the anode layer.

9. The fuel cell of claim 2 where the edges of the cathode layer and anode layer comprise seals which retain oxidant gas in the cathode layer and fuel in the anode layer.

10. The fuel cell of claim 2 where the manifolds comprise separate fuel inlet manifolds to provide fuel gas to the anode layer, fuel exhaust manifolds to receive fuel exhaust from the anode layer, oxidant gas inlet manifolds to provide oxidant gas to the cathode layer, and oxidant exhaust manifolds to receive oxidant gas from the cathode layer of the cell.

1 1. The fuel cell of claim 10 where said manifolds are positioned across the planar surface of the fuel cell at the intersections of an essentially square grid,
wherein fuel inlet and exhaust manifolds are positioned so that fuel gas flows essentially diagonally across the anode layer from a fuel inlet manifold to a fuel exhaust manifold, and oxidant inlet and exhaust manifolds are positioned so that oxidant flows from an oxidant inlet manifold to a oxidant exhaust manifold essentially diagonally across the cathode layer and at essentially right angles to said fuel flow.

12. The fuel cell of claim 1 1 in which the outer boundary of the active cell area passes approximately through the centers of the perimeter manifold openings, said perimeter manifold openings that intersect a single edge of said active cell area boundary being about half the area of the manifold openings positioned within said active cell area, and the manifold openings that intersect two edge of said cell active area being about one quarter the area of the manifold openings positioned within said active cell area.

13. A fuel cell power generation module comprising a stack of two or more fuel cells in series connection, said fuel cells comprising a plurality of manifolds that penetrate said fuel cells, said stack of fuel cells containing no current collectors.

14. A fuel cell power generation module comprising a stack of two or more fuel cells in series connection, the stack comprising a plurality of manifolds that penetrate the cells, said manifolds distributed across the planar surface of the fuel cells.

15. The module of claim 14 where a portion of the total number of the manifolds communicate with the anode layers of each of said fuel cells and a portion of the total number of the manifolds communicate with the cathode layers of each of said fuel cells.

16. The module of claim 15 where said anode communicating manifolds comprise seal members, the seal members positioned in areas of the manifold that traverse the cathode layers of each of said fuel cells.

17. The module of claim 15 where said cathode communicating manifolds comprise seal members, the seal members positioned in areas of the manifold that traverse the anode layers of each of said fuel cells.

18. The module of claim 15 where the perimeter of the cathode layers and anode layers of each cell comprises seals that retain oxidant gas in the cathode layers and fuel gas in the anode layers.

19. The module of claim 14 where an electrically conductive gas distribution plate is positioned on at least one end of stack of the fuel cells in series connection, the gas distribution plate comprising,
(a) passages communicating with said manifolds of the fuels cells,
(b) external connections for inlet of fuel and oxidant gases to the module and exhaust of fuel and oxidant gases from the module, said external connections communicating with said passages that communicate with said manifolds of the fuel cells.

20. The module of claim 19 where gas distribution plates are placed at both ends of the stack of fuel cells in series connection and one or more gas distribution plates are placed in intermediate positions in the stack of fuel cells, said plates having passages therethrough which communicate with the manifolds of the fuel cells.