Polymer electrolyte fuel cell system and operation method thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/00
H01M-008/14
H01M-008/04
출원번호
UP-0924548
(2004-08-24)
등록번호
US-7722996
(2010-06-14)
우선권정보
JP-2003-299863(2003-08-25)
발명자
/ 주소
Kobayashi, Susumu
Matsumoto, Toshihiro
Tomizawa, Takeshi
Kokawa, Katsuzou
Kanbara, Teruhisa
출원인 / 주소
Panasonic Corporation
대리인 / 주소
Panitch Schwarze Belisario & Nadel LLP
인용정보
피인용 횟수 :
3인용 특허 :
5
초록▼
A polymer electrolyte fuel cell system is disclosed, comprising a fuel cell having a predetermined power generation portion configured to operate at a predetermined temperature to generate an electric power using a fuel gas and an oxidizing gas supplied to said fuel cell, and a humidifier configured
A polymer electrolyte fuel cell system is disclosed, comprising a fuel cell having a predetermined power generation portion configured to operate at a predetermined temperature to generate an electric power using a fuel gas and an oxidizing gas supplied to said fuel cell, and a humidifier configured to humidify the fuel gas and the oxidizing gas, wherein the humidifier is configured to humidify the fuel gas and the oxidizing gas to allow the fuel gas and the oxidizing gas to have dew points higher than the predetermined temperature, the humidified fuel gas and oxidizing gas having the dew points higher than the operating temperature being supplied to the fuel cell.
대표청구항▼
What is claimed is: 1. A polymer electrolyte fuel cell system comprising: a fuel cell having a predetermined power generation portion configured to operate at a predetermined temperature to generate an electric power using a fuel gas supplied to a fuel gas passage and an oxidizing gas supplied to a
What is claimed is: 1. A polymer electrolyte fuel cell system comprising: a fuel cell having a predetermined power generation portion configured to operate at a predetermined temperature to generate an electric power using a fuel gas supplied to a fuel gas passage and an oxidizing gas supplied to an oxidizing gas passage; an anode humidifying circuit configured to humidify the fuel gas; a cathode humidifying circuit configured to humidify the oxidizing gas; and a heater configured to heat said anode humidifying circuit and said cathode humidifying circuit, wherein said anode humidifying circuit and said cathode humidifying circuit form a total enthalpy heat exchanger, wherein said total enthalpy heat exchanger is equipped with said heater and is heated by said heater, wherein said anode humidifying circuit has a fuel gas introducing region connected to an inlet of said fuel gas passage, an anode exhaust gas introducing region connected to an outlet of said fuel gas passage, and an anode total enthalpy heat exchange membrane separating the fuel gas introducing region from the anode exhaust gas introducing region, wherein said cathode humidifying circuit has an oxidizing gas introducing region connected to an inlet of said oxidizing gas passage, a cathode exhaust gas introducing region connected to an outlet of said oxidizing gas passage, and a cathode total enthalpy heat exchange membrane separating the oxidizing gas introducing region from the cathode exhaust gas introducing region, and wherein said anode humidifying circuit and said cathode humidifying circuit which are heated by said heater are configured to humidify the fuel gas and the oxidizing gas, respectively, such that the fuel gas and the oxidizing gas have dew points higher than the predetermined temperature, the humidified fuel gas and humidified oxidizing gas having the dew points higher than the predetermined temperature being supplied to said fuel cell. 2. The polymer electrolyte fuel cell system according to claim 1, wherein the predetermined power generation portion is a portion where the fuel gas and the oxidizing gas supplied to said fuel cell are first consumed in an electrochemical reaction for generating the electric power. 3. The polymer electrolyte fuel cell system according to claim 1, wherein a range of the dew points is determined by an upper limit dew point that does not cause flooding in said fuel cell and a lower limit dew point of the predetermined temperature. 4. The polymer electrolyte fuel cell system according to claim 1, wherein a range of the dew points is not lower than 50° C. and not higher than 70° C. 5. The polymer electrolyte fuel cell system according to claim 1, wherein said anode humidifying circuit and said cathode humidifying circuit are configured to humidify the fuel gas and the oxidizing gas using a substance exhausted from said fuel cell such that the fuel gas and the oxidizing gas have the dew points higher than the predetermined temperature. 6. The polymer electrolyte fuel cell system according to claim 1, wherein said anode humidifying circuit and said cathode humidifying circuit are configured to humidify the fuel gas and the oxidizing gas using a mixture containing a substance exhausted from said fuel cell and water such that the fuel gas and the oxidizing gas have the dew points higher than the predetermined temperature. 7. The polymer electrolyte fuel cell system according to claim 5, wherein the substance exhausted from said fuel cell is at least one of the fuel gas and the oxidizing gas exhausted from said fuel cell. 8. The polymer electrolyte fuel cell system according to claim 6, wherein the substance exhausted from said fuel cell is at least one of the fuel gas and the oxidizing gas exhausted from said fuel cell. 9. The polymer electrolyte fuel cell system according to claim 6, further comprising: a water condenser configured to perform condensation of the fuel gas and the oxidizing gas exhausted from said fuel cell to obtain water, wherein the water obtained by said water condenser is used as the water of the mixture. 10. The polymer electrolyte fuel cell system according to claim 5, wherein the substance and the fuel gas and the oxidizing gas being supplied to said total enthalpy heat exchanger and subjected to total enthalpy heat exchange between the substance and the fuel gas and the oxidizing gas, and said total enthalpy heat exchanger being heated by said heater such that the fuel gas and the oxidizing gas to be humidified have the dew points higher than the predetermined temperature. 11. The polymer electrolyte fuel cell system according to claim 6, wherein the mixture and the fuel gas and the oxidizing gas being supplied to said total enthalpy heat exchanger and subjected to total enthalpy heat exchange between the mixture and the fuel gas and the oxidizing gas, and said total enthalpy heat exchanger being heated by said heater such that the fuel gas and the oxidizing gas to be humidified have the dew points higher than the predetermined temperature. 12. The polymer electrolyte fuel cell system according to claim 10, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by combusting the fuel gas or fuel gas exhausted from said fuel cell. 13. The polymer electrolyte fuel cell system according to claim 11, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by combusting the fuel gas or fuel gas exhausted from said fuel cell. 14. The polymer electrolyte fuel cell system according to claim 10, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by catalytically combusting the fuel gas or fuel gas exhausted from said fuel cell and the oxidizing gas or oxidizing gas exhausted from said fuel cell. 15. The polymer electrolyte fuel cell system according to claim 11, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by catalytically combusting the fuel gas or fuel gas exhausted from said fuel cell and the oxidizing gas or oxidizing gas exhausted from said fuel cell. 16. The polymer electrolyte fuel cell system according to claim 10, wherein said fuel cell is configured to operate at the predetermined temperature obtained by flowing a heat medium within said fuel cell to generate the electric power, and said heater is configured to heat said total enthalpy heat exchanger using heat of heat medium exhausted from said fuel cell. 17. The polymer electrolyte fuel cell system according to claim 11, wherein said fuel cell is configured to operate at the predetermined temperature obtained by flowing a heat medium within said fuel cell to generate the electric power and said heater is configured to heat said total enthalpy heat exchanger using heat of heat medium exhausted from said fuel cell. 18. The polymer electrolyte fuel cell system according to claim 10, further comprising: a reformer configured to generate the fuel gas from a precursor of the fuel gas, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by combusting the precursor. 19. The polymer electrolyte fuel cell system according to claim 11, further comprising: a reformer configured to generate the fuel gas from a precursor of the fuel gas, wherein said heater is configured to heat said total enthalpy heat exchanger using heat generated by combusting the precursor. 20. The polymer electrolyte fuel cell system according to claim 10, further comprising: a reformer configured to generate the fuel gas from a precursor of the fuel gas, wherein said heater is configured to heat said total enthalpy heat exchanger using waste heat exhausted from said reformer. 21. The polymer electrolyte fuel cell system according to claim 11, further comprising: a reformer configured to generate the fuel gas from a precursor of the fuel gas, wherein said heater is configured to heat said total enthalpy heat exchanger using waste heat exhausted from said reformer. 22. The polymer electrolyte fuel cell system according to claim 10, wherein said heater is configured to directly heat said total enthalpy heat exchanger. 23. The polymer electrolyte fuel cell system according to claim 11, wherein said heater is configured to directly heat said total enthalpy heat exchanger. 24. The polymer electrolyte fuel cell system according to claim 10, wherein said heater is configured to indirectly heat said total enthalpy heat exchanger. 25. The polymer electrolyte fuel cell system according to claim 11, wherein said heater is configured to indirectly heat said total enthalpy heat exchanger. 26. The polymer electrolyte fuel cell system according to claim 1, wherein said fuel cell and said anode and cathode humidifying circuits are integrated, and said integrated fuel cell and anode and cathode humidifying circuits are entirely thermally insulated.
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이 특허에 인용된 특허 (5)
McElroy James F. ; Kralick James H., Enthalpy recovery fuel cell system.
Autenrieth Rainer,DEX ; Boneberg Stefan,DEX ; Poschmann Thomas,DEX ; Schuebler Martin,DEX ; Wieland Steffen,DEX, Process for operating a water vapor reforming system, a reforming system operable thereby and a fuel cell system operating process.
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