IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0914379
(2000-12-14)
|
우선권정보 |
JP-0372695 (1999-12-28) |
국제출원번호 |
PCT/JP00/08881
(2000-12-14)
|
국제공개번호 |
WO01/48849
(2001-07-05)
|
발명자
/ 주소 |
- Matsui, Nobuki
- Ikegami, Shuji
- Okamoto, Yasunori
- Yonemoto, Kazuo
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
1 |
초록
▼
When humidifying, almost to water vapor saturation, reformed gas that is supplied to a hydrogen electrode of a solid polymer type fuel cell ( 1 ) and air that is supplied to an oxygen electrode of the fuel cell ( 1 ), heating for obtaining water vapor to establish such saturation is not required. Fo
When humidifying, almost to water vapor saturation, reformed gas that is supplied to a hydrogen electrode of a solid polymer type fuel cell ( 1 ) and air that is supplied to an oxygen electrode of the fuel cell ( 1 ), heating for obtaining water vapor to establish such saturation is not required. For the purpose of improving the thermal efficiency of a fuel cell system, water vapor contained in hydrogen electrode exhaust gas exhausted from the hydrogen electrode of the fuel cell ( 1 ) is let to penetrate through a water vapor permeable membrane ( 34 ), whereas water vapor contained either in air that is introduced into a partial oxidation reformation section ( 6 ) or in oxygen electrode exhaust gas exhausted from the oxygen electrode is let to penetrate through the water vapor permeable membrane ( 34 ) so that the water vapor is supplied to air that is supplied to the oxygen electrode of the fuel cell ( 1 ).
대표청구항
▼
1. A fuel cell humidification apparatus for a fuel cell ( 1 ), said fuel cell ( 1 ) having oxygen and hydrogen electrodes between which is interposed a solid polymer electrolyte for producing an electromotive force between said electrodes by supplying hydrogen containing reformed gas reformed in ref
1. A fuel cell humidification apparatus for a fuel cell ( 1 ), said fuel cell ( 1 ) having oxygen and hydrogen electrodes between which is interposed a solid polymer electrolyte for producing an electromotive force between said electrodes by supplying hydrogen containing reformed gas reformed in reformation means ( 4 ) and oxygen containing gas to said hydrogen electrode and to said oxygen electrode, respectively,said fuel cell humidification apparatus comprising humidification means ( 31 ) wherein water vapor contained in exhaust gas expelled from said fuel cell ( 1 ) penetrates through a water vapor permeable membrane ( 34 ) and then supplied, at least, to supply gas to said reformation means ( 4 ). 2. The fuel cell humidification apparatus of claim 1, wherein said reformation means ( 4 ) includes a partial oxidation reformation section ( 6 ) which generates, from source gas, hydrogen rich reformed gas through reactions including partial oxidation. 3. The fuel cell humidification apparatus of claim 2, wherein said humidification means ( 31 ) is arranged so that water vapor contained in hydrogen electrode exhaust gas expelled from said hydrogen electrode of said fuel cell ( 1 ) penetrates through said water vapor permeable membrane ( 34 ) and then supplied either to air or to a mixture of air and source gas that is introduced into said partial oxidation reformation section ( 6 ). 4. The fuel cell humidification apparatus of claim 1, wherein said reformation means ( 4 ) includes a water vapor reformation section ( 43 ) which generates, from source gas, hydrogen rich reformed gas through reactions. 5. The fuel cell humidification apparatus of claim 4, wherein said humidification means ( 31 ) is arranged so that water vapor contained in hydrogen electrode exhaust gas expelled from said hydrogen electrode of said fuel cell ( 1 ) penetrates through said water vapor permeable membrane ( 34 ) and then supplied to source gas that is introduced into said water vapor reformation section ( 43 ). 6. The fuel cell humidification apparatus of claim 3, wherein said humidification means ( 31 ) includes a first humidification section ( 32 ) which humidifies air or gas with water vapor in hydrogen electrode exhaust gas and a second humidification section ( 36 ) which humidifies said air or gas humidified in said first humidification section ( 32 ) with water vapor resulting from permeation of heated hot water through a water vapor permeable membrane ( 38 ). 7. The fuel cell humidification apparatus of claim 2, wherein said humidification means ( 31 ) is arranged so that water vapor contained in oxygen electrode exhaust gas expelled from said oxygen electrode of said fuel cell ( 1 ) penetrates through said water vapor permeable membrane ( 34 ) and then supplied to oxygen containing gas to said fuel cell ( 1 ). 8. The fuel cell humidification apparatus of claim 7, wherein said humidification means ( 31 ) includes a first humidification section ( 33 ) which humidifies gas with water vapor in oxygen electrode exhaust gas and a second humidification section ( 37 ) which humidifies said gas humidified in said first humidification section ( 33 ) with water vapor resulting from permeation of heated hot water through said water vapor permeable membrane ( 38 ). 9. The fuel cell humidification apparatus of claim 2, wherein said humidification means ( 31 ) is arranged so that water vapor contained in oxygen electrode exhaust gas expelled from said oxygen electrode of said fuel cell ( 1 ) penetrates through said water vapor permeable membrane ( 34 ) and then supplied either to air or to a mixture of air and source gas that is introduced into said partial oxidation reformation section ( 6 ). 10. The fuel cell humidification apparatus of claim 4, wherein said humidification means ( 31 ) is arranged so that water vapor contained in oxygen electrode exhaust gas expelled from said oxygen electrode of said fuel cell ( 1 ) penetrates through said water vapor per meable membrane ( 34 ) and then supplied to source gas that is introduced into said water vapor reformation section ( 43 ). 11. The cell humidification apparatus of claim 9 wherein said humidification means ( 31 ) includes a first humidification section ( 33 ) which humidifies air or gas with water vapor in oxygen electrode exhaust gas and a second humidification section ( 37 ) which humidifies said air or gas humidified in said first humidification section ( 33 ) with water vapor resulting from permeation of heated hot water through said water vapor permeable membrane ( 38 ). 12. The fuel cell humidification apparatus of claim 9, wherein said humidification means ( 31 ) is arranged so that water vapor contained in hydrogen electrode exhaust gas expelled from said hydrogen electrode of said fuel cell ( 1 ) penetrates through said water vapor permeable membrane ( 34 ) and then supplied to oxygen containing gas to said fuel cell ( 1 ). 13. The fuel cell humidification apparatus of claim 12, wherein said humidification means ( 31 ) includes a first humidification section ( 32 ) which humidifies gas with water vapor in hydrogen electrode exhaust gas and a second humidification section ( 36 ) which humidifies said gas humidified in said first humidification section ( 32 ) with water vapor resulting from permeation of heated hot water through said water vapor permeable membrane ( 38 ). 14. The fuel cell humidification apparatus of claim 3, 5 , 7 , 9 , 10 or 12 , wherein said humidification means ( 31 ) is formed integrally with said fuel cell ( 1 ). 15. The fuel cell humidification apparatus of claim 6, 8 , 11 , or 13 ,wherein said first and second humidification sections ( 32 ), ( 33 ), ( 36 ) and ( 37 ) of said humidification means ( 31 ) are formed integrally with said fuel cell ( 1 ); andwherein said heated hot water is cooling water for said fuel cell ( 1 ). 16. The fuel cell humidification apparatus of 6 , 8 , 11 , or 13 ,wherein said first and second humidification sections ( 32 ), ( 33 ), ( 36 ) and ( 37 ) of said humidification means ( 31 ) are provided separately from said fuel cell ( 1 ); andwherein said heated hot water is hot water for hot water supply means ( 16 ). 17. The fuel cell humidification apparatus of claim 1, wherein said water vapor permeable membrane ( 34 ), through which water vapor contained in exhaust gas penetrates, is a hydrophilic membrane. 18. The fuel cell humidification apparatus of claim 1, wherein said water vapor permeable membrane ( 34 ), through which water vapor contained in exhaust gas penetrates, is a polymer membrane having a sulfonic acid group. 19. The fuel cell humidification apparatus of claims 6 , 8 , 11 or 13 , wherein said water vapor permeable membrane ( 38 ) of each of said second humidification sections ( 36 ) and ( 37 ) is a hydrophobic membrane. 20. The fuel cell humidification apparatus of claim 6, 8 , 11 or 13 , wherein said water vapor permeable membrane ( 38 ) of each of said humidification sections ( 36 ) and ( 37 ) is a porous membrane formed from a porous membrane of the polytetrafluoropolyethylene family, the polypropylene family, or the polyethylene family.
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