A fuel supply device for direct methanol fuel cells includes a fuel tank for storing liquid fuel, a wick structure formed on the fuel tank, the wick structure for receiving the liquid fuel from the fuel tank, a sheet stack disposed on the wick structure, the sheet stack for absorbing and transferrin
A fuel supply device for direct methanol fuel cells includes a fuel tank for storing liquid fuel, a wick structure formed on the fuel tank, the wick structure for receiving the liquid fuel from the fuel tank, a sheet stack disposed on the wick structure, the sheet stack for absorbing and transferring, in an upward direction, the liquid fuel supplied to the wick structure, and an electrode plate disposed on the sheet stack for supplying, in an upward direction, the liquid fuel absorbed into the sheet stack. The fuel supply device may continuously and uniformly supply a proper amount of liquid fuel and effectively remove by-products generated in a fuel cell. Thus, a long life, efficient fuel cell may be created with the fuel supply device.
대표청구항▼
What is claimed is: 1. A fuel supply device for direct methanol fuel cells, comprising: a wick structure configured to transfer liquid fuel from a fuel tank to a sheet stack disposed on the wick structure; and an electrode plate disposed on the sheet stack, the electrode plate configured to transfe
What is claimed is: 1. A fuel supply device for direct methanol fuel cells, comprising: a wick structure configured to transfer liquid fuel from a fuel tank to a sheet stack disposed on the wick structure; and an electrode plate disposed on the sheet stack, the electrode plate configured to transfer fuel from the sheet stack to a fuel cell having an anode and a cathode, and configured to transfer gaseous reaction products from the anode and/or cathode to the sheet stack, wherein: the sheet stack includes at least two stacked sheets, each sheet includes pattern parts having a longitudinal dimension and further includes channels parallel to the longitudinal dimension of the pattern parts, the pattern parts include a linear pattern, and directions of overlapping linear patterns of adjacent sheets cross each other. 2. The fuel supply device as claimed in claim 1,wherein: the wick structure is configured to extend across an opening in the fuel tank, and the fuel tank is capable of being attached to and detached from the wick structure. 3. The fuel supply device as claimed in claim 2, further comprising the fuel tank, wherein the fuel tank includes a fuel tank body and a porous medium. 4. The fuel supply device as claimed in claim 3,wherein the porous medium is disposed inside the fuel tank body and extends beyond the fuel tank body. 5. The fuel supply device as claimed in claim 1, wherein the wick structure comprises a wick structured plate having a plurality of wicks and fuel supply ports. 6. The fuel supply device as claimed in claim 5, further comprising the fuel tank, wherein the fuel tank includes a fuel tank body and a porous medium. 7. The fuel supply device as claimed in claim 6, wherein the porous medium is disposed corresponding to the fuel supply ports. 8. The fuel supply device as claimed in claim 5, wherein the wicks are arranged in at least two parallel horizontal rows. 9. The fuel supply device as claimed in claim 8, wherein wicks in a first one of the at least two parallel horizontal rows are staggered with respect to wicks in a second one of the at least two parallel horizontal rows. 10. The fuel supply device as claimed in claim 5, wherein the plurality of wicks is arranged radially outward from a center of the wick structured plate. 11. The fuel supply device as claimed in claim 5, wherein: the wick structured plate further includes a wall along edges thereof, the wall extends from a fuel tank side of the wick structured plate to the sheet stack, and the sheet stack is between the wall and the electrode plate. 12. The fuel supply device as claimed in claim 1, wherein the pattern parts and channels of a first sheet are respectively superposed on the pattern parts and channels of an adjacent second sheet sheets, the superposed channels defining an opening that penetrates the first sheet and the second sheet. 13. The fuel supply device as claimed in claim 1, wherein the channels of each sheet have at least one side open to an outside atmosphere so as to discharge the gaseous reaction products out of the sheet. 14. The fuel supply device as claimed in claim 1, wherein: areas of the pattern parts decrease in sheets disposed increasingly further from the wick structure, and widths of the channels increase in sheets disposed increasingly further from the wick structure. 15. The fuel supply device as claimed in claim 1, wherein the electrode plate comprises pattern parts and channels respectively formed at positions superposed on pattern parts and channels of an uppermost sheet of the sheet stack disposed therebelow, wherein a linear pattern of the pattern parts of the electrode plate corresponds to the linear pattern of a second uppermost sheet of the sheet stack. 16. The fuel supply device as claimed in claim 1, wherein a mesh structure is defined in the sheet stack by the pattern parts of the sheets, the liquid fuel being transferred from the wick structure to the electrode plate through the mesh structure. 17. The fuel supply device as claimed in claim 16, wherein the mesh structure has micro-holes. 18. The fuel supply device as claimed in claim 1, wherein the wick structure includes a plurality of fuel supply ports, and each sheet of the sheet stack further includes fuel inlets formed at positions corresponding to the fuel supply ports of the wick structure.
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이 특허에 인용된 특허 (6)
Cohn J. Gunther (West Orange NJ) Feigenbaum Haim (Highland Park NJ) Kaufman Arthur (West Orange NJ), Fuel cell and system for supplying electrolyte thereto with wick feed.
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