A direct liquid feed fuel cell system that includes a housing, a fuel cell stack in which air flow channels are formed, in the housing; and a fan that supplies air between the housing and a part of the air flow channels, wherein the fuel cell stack is obliquely mounted toward the fan. The fuel cell
A direct liquid feed fuel cell system that includes a housing, a fuel cell stack in which air flow channels are formed, in the housing; and a fan that supplies air between the housing and a part of the air flow channels, wherein the fuel cell stack is obliquely mounted toward the fan. The fuel cell system can be arranged so that the airflow channels are substantially vertical, in order for air to be supplied between the housing and an upper part of the airflow channels, with the fuel cell stack downwardly obliquely mounted toward the fan. Furthermore, an outlet in the housing on an opposite side of the fuel cell stack from the fan can allow air that has passed through the air flow channels to be exhausted from the fuel cell system after passing through a space between a part of the fuel cell stack and the housing.
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1. A direct liquid feed fuel cell system comprising; a housing;a fuel cell stack in the housing and having a first end, a second end, and a longitudinal axis extending through a center of the first end and a center of the second end, the fuel cell stack comprising a plurality of plates in which air
1. A direct liquid feed fuel cell system comprising; a housing;a fuel cell stack in the housing and having a first end, a second end, and a longitudinal axis extending through a center of the first end and a center of the second end, the fuel cell stack comprising a plurality of plates in which air flow channels are formed and arranged in a direction perpendicular to the longitudinal axis; anda first fan to supply air between the housing and the fuel cell stack, wherein the air supplied by the first fan is configured to be output by the first fan along a central axis,wherein the fuel cell stack is obliquely mounted relative to the housing, such that an acute angle is formed between the longitudinal axis and the central axis, and such that openings corresponding to the air flow channels of each of the plates are biased toward the first fan. 2. The direct liquid feed fuel cell system of claim 1, wherein the airflow channels are substantially transverse relative to a direction of the air supplied from the first fan, the first fan supplies air between the housing and an upper part of the airflow channels, and the fuel cell stack is downwardly obliquely mounted toward the first fan. 3. The direct liquid feed fuel cell system of claim 1, further comprising an outlet in the housing on an opposite side of the fuel cell stack from the first fan, wherein air that has passed through the air flow channels is discharged to the outside through the outlet after passing through a space between a part of the fuel cell stack and the housing. 4. The direct liquid feed fuel cell system of claim 3, wherein air that has passed through the air flow channels is discharged to the outside through the outlet after passing through a space between a lower part of the fuel cell stack and the housing. 5. The direct liquid feed fuel cell system of claim 3, further comprising a cooling device to cool the fuel cell stack. 6. The direct liquid feed fuel cell system of claim 5, wherein the cooling device comprises a cooling fin formed on a part of the housing in a region corresponding to the fuel cell stack. 7. The direct liquid feed fuel cell system of claim 6, wherein the cooling fin is formed on a lower part of the housing in a region corresponding to the fuel cell stack. 8. The direct liquid feed fuel cell system of claim 6, further comprising a second fan for cooling the cooling fin. 9. The direct liquid feed fuel cell system of claim 8, wherein an air path is formed between the outlet and the second fan and is connected to the cooling fin, and air supplied from the second fan cools the outlet via the air path. 10. A direct liquid feed fuel cell system, comprising: a housing; anda first fan to feed air through air flow channels in a fuel cell stack, wherein the first fan is directed at an angle to the air flow channels;an outlet formed in the housing, on an opposite side of the fuel cell stack from the first fan, to externally discharge air that has passed through the air flow channels and a space between the fuel cell stack and the housing;a cooling fin formed on the housing, to extract heat from the fuel cell stack; anda second fan to feed air along an air passageway that extends parallel to the outlet and to feed air along the cooling fin, so as to cool the outlet and the cooling fin, wherein the air fed along the air passageway is configured to flow in a direction substantially opposite to a direction of flow of the air fed through the outlet. 11. The direct liquid feed fuel cell system of claim 10, wherein the fuel cell stack is obliquely mounted in the housing. 12. The direct liquid feed fuel cell system of claim 10, wherein the fuel cell stack comprises: a membrane electrode assembly having an anode and a cathode; andat least two bipolar plates having flow channels through which air flows in contact with the cathode and a liquid fuel flows in contact with the anode. 13. The direct liquid feed fuel cell system of claim 10, further comprising a circulating unit to transport a fuel to the fuel cell stack and recover water and the fuel that have passed through the fuel cell stack, the circulating unit comprising: a separator to separate a gas from the unreacted fuel that has passed through an anode of the fuel cell stack;a water pump to transport the fuel and water; anda valve to control a concentration of the fuel. 14. The direct liquid feed fuel cell system of claim 13, further comprising a fuel concentration sensor to measure the concentration of the fuel and control the valve according to the concentration of the fuel. 15. The direct liquid feed fuel cell system of claim 10, further comprising: a circuit unit to supply electrical energy generated by the fuel cell stack to an electronic device;a fuel cartridge to store fuel to supply to an anode of the fuel cell stack; and a battery backup to supply backup electrical energy. 16. The direct liquid feed fuel cell system of claim 10, wherein the outlet condenses and collects water from the air fed there through. 17. The direct liquid feed fuel cell system of claim 16, further comprising a fuel supply line formed along the outlet before the fuel is supplied to an anode of the fuel cell stack, to cool the outlet. 18. The direct liquid feed fuel cell system of claim 10, wherein the fuel is methanol or ethanol.
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이 특허에 인용된 특허 (4)
Surampudi Subbarao ; Frank Harvey A. ; Narayanan Sekharipuram R. ; Chun William ; Jeffries-Nakamura Barbara ; Kindler Andrew ; Halpert Gerald, Direct methanol feed fuel cell and system.
Salinas Carlos ; Simpson Stanley F. ; Murphy Oliver J. ; Franaszczuk Kryzysztof ; Moaddel Homayoun ; Weng Dacong, Membrane and electrode structure for methanol fuel cell.
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