IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0649605
(1984-09-12)
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우선권정보 |
JP-0168204 (1983-09-14) |
발명자
/ 주소 |
- Shimizu, Toshio
- Satou, Takanori
- Tsukui, Tsutomu
- Doi, Ryouta
- Yamaguchi, Motoo
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
56 인용 특허 :
3 |
초록
▼
In a liquid fuel cell including a plurality of series-connected unit cells each including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to the fuel electrode, and an oxidizer chambe
In a liquid fuel cell including a plurality of series-connected unit cells each including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to the fuel electrode, and an oxidizer chamber disposed adjacent to the oxidizer electrode, and fuel tanks supplying liquid fuel to the fuel chambers, at least two vertically-spaced passages permitting communication of the fuel tanks with all of the fuel chambers are provided so that one of them serves as a passage for liquid fuel while the other serves as a passage for gas produced at the fuel electrodes, the liquid fuel in an amount smaller than the tank volume is charged in each of the fuel tanks to leave a non-charged space, and gas vent ports provided with gas-liquid separating means are disposed midway of the passages and/or on the tank wall portions corresponding to the non-charged spaces defined in the fuel tanks. The liquid fuel cell can satisfactorily generate power at whatever attitude, and gas produced at the fuel electrodes can be vented to the exterior of the cell without leakage of liquid fuel.
대표청구항
▼
1. A liquid fuel cell including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to said fuel electrode, an oxidizer chamber disposed adjacent to said oxidizer electrode, and a fuel ta
1. A liquid fuel cell including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to said fuel electrode, an oxidizer chamber disposed adjacent to said oxidizer electrode, and a fuel tank supplying liquid fuel to said fuel chamber, said fuel cell comprising a first passage connecting between a non-charged space in said fuel tank and said fuel chamber, a second passage disposed at a position diagonal with respect to said first passage for supplying said fuel from said fuel tank to said fuel chamber, and gas venting ports provided with gas-liquid separating means and disposed on at least one of said non-charged space of said fuel tank and said first passage communicating therewith and also disposed on at least one of the fuel-charged space of said fuel tank and said second passage communicating therewith. 2. A liquid fuel cell as claimed in claim 1, wherein said gas vent ports are disposed at diagonally upper and lower positions respectively on said fuel tank. 3. A liquid fuel cell including a plurality of series-connected unit cells each including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to said fuel electrode, and an oxidizer chamber disposed adjacent to said oxidizer electrode, and a fuel tank supplying liquid fuel to said fuel chambers, said fuel cell comprising a passage connecting between a non-charged space in said fuel tank and said fuel chambers of said unit cells, and gas venting means including a gas vent port provided with gas-liquid separating means and disposed on at least one of said passage and said non-charged space of said fuel tank, said gas venting means including at least two gas vent ports so that gas can be vented from one of said gas vent ports when the attitude of the fuel cell tilts over an angle of more than 45° from the normal attitude. 4. A liquid fuel cell as claimed in claim 3, wherein a second passage is disposed at a diagonally lower position than the position of said first passage for supplying liquid fuel contained in said fuel tank to all of said fuel chambers of said unit cells. 5. A liquid fuel cell as claimed in claim 4, wherein a gas vent port provided with gas-liquid separating means is disposed in said second passage. 6. A liquid fuel cell as claimed in claim 5, wherein said gas-liquid separating means is in the form of a porous member of a liquid repellent material. 7. A liquid fuel cell as claimed in claim 4, wherein a gas vent port provided with gas-liquid separating means is disposed in the fuel-charged space of said fuel tank. 8. A liquid fuel cell as claimed in claim 7, wherein said gas vent port is disposed at a position diagonal with respect to another gas vent port disposed on at least one of said non-charged space on said fuel tank and said first passage communicating with said non-charged space. 9. A liquid fuel cell as claimed in claim 7, wherein said gas vent port is disposed at a position associated with said non-charged space when said fuel tank is turned 180°. 10. A liquid fuel cell as claimed in claim 3, wherein fuel sucking means is provided in said fuel chamber of each of said unit cells. 11. A liquid fuel cell as claimed in claim 10, wherein said electrolyte is a solid electrolyte. 12. A liquid fuel cell as claimed in claim 11, wherein said liquid fuel is methanol. 13. A liquid fuel cell as claimed in claim 3, wherein said fuel chamber of each of said unit cells is provided by forming a recess on a separator of carbon. 14. A liquid fuel cell as claimed in claim 13, wherein said separator of carbon is provided with a passage connecting between the non-charged space of said fuel tank and said fuel chamber. 15. A liquid fuel cell as claimed in claim 13, wherein said separator of carbon is provided with another passage for supplying liquid fuel contained in said fuel tank to said fuel chamber. 16. A liquid fuel cell including a plurality of series-connected unit cells each including a fuel electrode and an oxidizer electrode disposed opposite to each other with an electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to said fuel electrode, and an oxidizer chamber disposed adjacent to said oxidizer electrode, and fuel tanks supplying liquid fuel to said fuel chambers, wherein said fuel tanks are disposed on both ends respectively of the laminate of said series-connected unit cells, and wherein said fuel cell comprises a passage connecting between at least one of non-charged spaces of said fuel tanks and said fuel chambers, and gas venting means including gas vent ports provided with gas-liquid separating means and disposed on at least one of said passage and said non-charged space of said fuel tank communicating with said passage, said gas venting means including at least two gas vent ports disposed at different positions respectively so that gas can be vented from one of said gas vent ports when the attitude of the fuel cell tilts over an angle of more than 45° from the normal attitude. 17. A liquid fuel cell as claimed in claim 16, wherein a second passage connecting between at least one of the fuel-charged spaces in said two fuel tanks and said fuel chambers is disposed at a diagonal position with respect to said first passage connecting between said non-charged space and said fuel chambers. 18. A liquid fuel cell as claimed in claim 17, wherein a gas vent port provided with gas-liquid separating means is disposed on at least one of said second passage and said non-charged space of said fuel tank communicating with said second passage. 19. A liquid fuel cell as claimed in claim 17, wherein said gas venting means are provided in the upper non-charged space of one of said fuel tanks and in the lower fuel-charged space of the other fuel tank respectively at positions diagonal with respect to each other. 20. A liquid fuel cell as claimed in claim 16, wherein said gas vent ports are disposed at diagonally upper and lower positions of said fuel tanks respectively. 21. A liquid fuel cell as claimed in claim 16, wherein the volume of one of said fuel tanks is more than two to five times as large as that of the other. 22. A liquid fuel cell including a fuel electrode and an oxidizer electrode disposed opposite to each other with a liquid-fuel impermeable electrolyte layer being interposed therebetween, a fuel chamber disposed adjacent to said fuel electrode, an oxidizer chamber disposed adjacent to said oxidizer electrode, and a fuel tank supplying liquid fuel to said fuel chamber, wherein at least two passages are provided so that fuel can be supplied from said fuel tank to said fuel chamber through a second passage when the attitude of the fuel cell tilts over an angle of more than 45° from the normal attitude and fuel cannot be supplied through a first passage normally connecting between said fuel tank and said fuel chamber, said first and second passages cooperating to continuously charge fuel in said fuel chamber to ensure quick starting in response to the supply of an oxidizing agent to said oxidizer chamber, and means is provided for venting gas produced at said fuel electrode to the atmosphere.
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