[특허]Electrolyzer cell stack system

Hydrogenics Corporation

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특허 상세정보

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Electrolyzer cell stack system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C25B-015/08 C25B-015/02 C25B-001/04
미국특허분류(USC)	204/278; 204/256; 204/258; 204/266; 205/628
출원번호	US-0209854 (2008-09-12)
등록번호	US-8419910 (2013-04-16)
발명자 / 주소	Rusta-Sallehy, Ali Vale, Michael Frank, David Joos, Nathaniel Ian
출원인 / 주소	Hydrogenics Corporation
대리인 / 주소	Pundsack, Scott
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록
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Some embodiments of the present invention provide a balance-of-plant system and apparatus suited for regulating the operation of an electrolyzer cell stack. Specifically, in some embodiments, a balance-of-plant system and apparatus is operable to regulate the respective pressures of at least two reaction products relative to one another. Various examples are provided to demonstrate how the respective pressures of two reaction products can be regulated in relation to one another in a pressure following configuration, thereby regulating the pressure differential across an electrolyte layer according to aspects of different embodiments of the invention. Some of the examples provided also include design simplifications and alternatives that may reduce production costs of electrochemical cells configured according to aspects of different embodiments of the invention.

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1. A balance-of-plant system, suited for regulating the operation of an electrolyzer cell stack having at least one electrolyzer cell having a first output port for a first reaction product and a second output port for a second reaction product, at least one of the first and second output ports being for supply of one of the reaction products as a gas for use, the balance-of-plant system comprising: a first pressure regulator for regulating a first pressure of the first reaction product; anda pressure following device for regulating a second pressure of the second reaction product relative to the first pressure, the pressure following device consisting essentially of a dome-loaded pressure valve connected to the second output port,wherein flow of the second reaction product through the second output port is controlled by the dome-loaded pressure valve relative to the first pressure. 2. The balance-of-plant system according to claim 1, wherein the first and second pressures correspond to pressures of hydrogen and oxygen, respectively, produced by the electrolyzer cell stack. 3. The balance-of-plant system according to claim 2, further comprising a hydrogen collection device, and wherein the first pressure regulator is configured to control the pressure of hydrogen within the hydrogen collection device. 4. The balance-of-plant system according to claim 3, further comprising an oxygen collection device, and wherein the pressure following device is arranged between the hydrogen and oxygen collection devices. 5. The balance-of-plant system according to claim 4, wherein the dome-loaded pressure valve sets the pressure of oxygen relative to the pressure of hydrogen within the hydrogen collection device. 6. The balance-of-plant system according to claim 5, wherein the dome-loaded pressure valve is configured as a negative bias pressure regulator, so that the pressure of oxygen is set lower than the pressure of hydrogen. 7. The balance-of-plant system according to claim 5, wherein the dome-loaded pressure valve is configured as a positive bias pressure regulator, so that the pressure of oxygen is set higher than the pressure of hydrogen. 8. The balance-of-plant system according to claim 1, wherein the first and second pressures correspond to pressures of oxygen and hydrogen, respectively, produced by the electrolyzer cell stack. 9. The balance-of-plant system according to claim 8, further comprising an oxygen collection device, and wherein the first pressure regulator is configured to control the pressure of oxygen within the oxygen collection device. 10. The balance-of-plant system according to claim 9, further comprising a hydrogen collection device, and wherein the pressure following device is arranged between the oxygen and hydrogen collection devices. 11. The balance-of-plant system according to claim 10, wherein the dome-loaded pressure valve sets the pressure of hydrogen relative to the pressure of oxygen within the oxygen collection device. 12. The balance-of-plant system according to claim 11, wherein the dome-loaded pressure valve is configured as a negative bias pressure regulator, so that the pressure of hydrogen is set lower than the pressure of oxygen. 13. The balance-of-plant system according to claim 11, wherein the dome-loaded pressure valve is configured as a positive bias pressure regulator, so that the pressure of hydrogen is set higher than the pressure of oxygen. 14. An electrochemical cell stack module comprising: at least one electrochemical cell;a first output port for a first reaction product at a first pressure and a second output port for a second reaction product at a second pressure, at least one of the first and second output ports being for supply of one of the reaction products as a gas for use, wherein the first and second pressures are controllable;a first pressure regulator for regulating the first pressure of the first reaction product; anda pressure following device that is operable to control the second pressure relative to the first pressure, the pressure following device comprising a dome-loaded pressure valve connected to the second output port and having its dome fluidly connected to the first output port,wherein flow of the reaction product through the second output port is controlled by the dome-loaded pressure valve relative to the first pressure. 15. The electrochemical cell stack according to claim 14, wherein the at least one electrochemical cell is an electrolyzer cell and the first and second pressures correspond to hydrogen and oxygen pressures, respectively. 16. The electrochemical cell stack according to claim 14, wherein the at least one electrochemical cell is an electrolyzer cell and the first and second pressures correspond to oxygen and hydrogen pressures, respectively. 17. The electrochemical cell stack according to claim 14, further comprising: a first collection device for the first reaction product; anda second collection device for the second reaction product. 18. The electrochemical cell stack according to claim 17, wherein the first pressure regulator is arranged to regulate the first pressure within the first collection device. 19. The electrochemical cell stack according to claim 18, wherein the pressure following device is arranged between the first and second collection devices, and the dome-loaded pressure valve sets the second pressure relative to the first pressure in the first collection device. 20. The electrochemical cell stack according to claim 19, wherein the dome-loaded pressure valve is configured as a negative bias pressure regulator, so that the second pressure is set lower than the first pressure. 21. The electrochemical cell stack according to claim 19, wherein the dome-loaded pressure valve is configured as a positive bias pressure regulator, so that the second pressure is set higher than the first pressure. 22. An electrolyzer cell module comprising: an electrolyzer cell stack comprising a cathode outlet port and an anode outlet port;a hydrogen collection device connected to the cathode outlet port;an oxygen collection device connected to the anode outlet port;a first pressure regulator connected to one of the collection devices and configured to control a pressure within the one of the collection devices; anda pressure following device arranged between the collection devices, the pressure following device comprising a dome-loaded pressure valve configured to directly sense the pressure in the one of the collection devices and control a pressure within the other of the collection devices relative to the pressure within the one of the collection devices.

이 특허에 인용된 특허 (35)

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Electrolyzer cell stack system

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Electrolyzer cell stack system

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