KR950024365A - Fuel cell accumulator protection method and protection device - Google Patents

Fuel cell accumulator protection method and protection device Download PDF

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Publication number
KR950024365A
KR950024365A KR1019940001293A KR19940001293A KR950024365A KR 950024365 A KR950024365 A KR 950024365A KR 1019940001293 A KR1019940001293 A KR 1019940001293A KR 19940001293 A KR19940001293 A KR 19940001293A KR 950024365 A KR950024365 A KR 950024365A
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KR
South Korea
Prior art keywords
unit cell
fuel cell
unit
cell
series
Prior art date
Application number
KR1019940001293A
Other languages
Korean (ko)
Other versions
KR0123744B1 (en
Inventor
이종욱
이서재
최미영
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940001293A priority Critical patent/KR0123744B1/en
Publication of KR950024365A publication Critical patent/KR950024365A/en
Application granted granted Critical
Publication of KR0123744B1 publication Critical patent/KR0123744B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04664—Failure or abnormal function
    • H01M8/04671—Failure or abnormal function of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04246—Short circuiting means for defective fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04552—Voltage of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0002—Aqueous electrolytes
    • H01M2300/0005—Acid electrolytes
    • H01M2300/0008—Phosphoric acid-based
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/08—Fuel cells with aqueous electrolytes
    • H01M8/086—Phosphoric acid fuel cells [PAFC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

본 발명은 다수의 단위전지의 적충체로 되는 연료전지에서 특정단위전지의 오작동시에도 전체 시스템을 안정화시킬 수 있는 보호 방법 및 보호 장치에 관한 것이다. 즉, 전해질을 보유하는 매트릭스 및, 기체확산 전극인 양극과 음극으로 되는 단위전지가 분리판이 개재되어 직렬로 적충됨으로써 이루어지는 연료전지 적충체의 운전시, 단위전지 각 다의 전압차이를 감지하여 그 차이값이 일정치 이상이 되는 단위전지에 대해서 단위전지 내부로 흐르는 전류를 차단시키는 것을 특징으로 하는 연료전지 적충체의 보호방법 및 보호장치에 의하면, 오작동되는 단위전지에 있어서는 더이상의 성능 저하를 방지할 뿐 아니라 정상운전중인 다른 단위전지의 성능 저하를 방지함 수 있으므로 장기간 운전시 성능에 획기적인 향상을 가져올 수 있으며, 연료전지 적충체에 대한 관리를 최소화할 수 있다는 장점이 있다.The present invention relates to a protection method and a protection device capable of stabilizing the entire system even in the case of malfunction of a particular unit cell in a fuel cell that is a locus of a plurality of unit cells. That is, when the fuel cell charger is formed in which the matrix containing the electrolyte and the unit cell including the positive electrode and the negative electrode, which are gas diffusion electrodes, are stacked in series with a separator plate, the voltage difference between each unit cell is sensed and the difference is detected. According to a method and a protection device for a fuel cell charger, the current flow into the unit cell is blocked for a unit cell whose value is greater than or equal to a certain value. In addition, since it can prevent the performance degradation of other unit cells in normal operation, it can bring a drastic improvement in performance during long-term operation, and has the advantage of minimizing the management of fuel cell accumulators.

Description

연료전지 적충체의 보호방법 및 보호장치Fuel cell accumulator protection method and protection device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 통상적인 인산형 연료전지의 작동원리를 설명하는 모식 단면도이고,1 is a schematic cross-sectional view illustrating the operation principle of a conventional phosphoric acid fuel cell.

제2도는 본 발명의 연료 전지 적충체의 보호장치의 작동원리를 설명하는 모식 단면도이다.2 is a schematic cross-sectional view for explaining the principle of operation of the protection device for the fuel cell stack of the present invention.

Claims (2)

전해질을 보유하는 매트릭스 및, 기체 확산 전극인 양극과 음극으로 되는 단위전지가 분리판이 개재되어 직렬로 적층됨으로써 이루어지는 연료전지 적충체의 운전시, 단위전지 각 단의 전압차이를 감지하여 그 차이값이 일정치 이상이 되는 단위전지에 대해서 단위전지내부로 흐르는 전류를 차단시키는 것을 특징으로 하는 연료전지 적충체의 보호방법.In the operation of the fuel cell accumulator, in which a matrix containing an electrolyte and a unit cell including a positive electrode and a negative electrode, which are gas diffusion electrodes, are stacked in series with a separator, a voltage difference between each stage of the unit cell is sensed and the difference value is detected. A method for protecting a fuel cell charger, characterized in that for interrupting the current flowing into the unit cell for a unit cell that exceeds a certain value. 전해질을 보유하는 매트릭스 및, 기체 확산 전극인 양극과 음극으로 되는 단위전지가 분리판이 개재되어 직렬로 적충됨으로써 이루어지는 연료전지 적충체에 있어서, 상기 단위전지 각 단에 구비되는 전압단자, 상기 단위전지를 서로 직렬로 연결하는 개페회로, 및 상기전압단자 간의 전압차이를 감지하고 그 차이값이 일정치 이상이 되는 단위전지의 개폐회로를 작동시켜 내부로 흐르는 전류를 차단시키는 중앙제어장치가 구비된 것을 특징으로 하는 연료전지 적충체의 보호장치.In a fuel cell charger comprising a matrix containing an electrolyte and a unit cell comprising a positive electrode and a negative electrode, which are gas diffusion electrodes, stacked in series with a separator plate, a voltage terminal provided at each stage of the unit cell, and the unit cell. Open circuits connected in series with each other, and a central control unit for detecting the voltage difference between the voltage terminal and operating the switching circuit of the unit cell that the difference value is a predetermined value or more to block the current flowing inside A protective device for fuel cell loci. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940001293A 1994-01-25 1994-01-25 Protecting method and apparatus for stack of fuel cell KR0123744B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940001293A KR0123744B1 (en) 1994-01-25 1994-01-25 Protecting method and apparatus for stack of fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940001293A KR0123744B1 (en) 1994-01-25 1994-01-25 Protecting method and apparatus for stack of fuel cell

Publications (2)

Publication Number Publication Date
KR950024365A true KR950024365A (en) 1995-08-21
KR0123744B1 KR0123744B1 (en) 1997-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940001293A KR0123744B1 (en) 1994-01-25 1994-01-25 Protecting method and apparatus for stack of fuel cell

Country Status (1)

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KR (1) KR0123744B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102236307B1 (en) * 2020-12-10 2021-04-05 국방과학연구소 Thermal battery system and ignition method of the system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040006665A (en) * 2002-07-13 2004-01-24 엘지전자 주식회사 Apparatus for preventing efficient lowering of fuel cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102236307B1 (en) * 2020-12-10 2021-04-05 국방과학연구소 Thermal battery system and ignition method of the system
US11916261B2 (en) 2020-12-10 2024-02-27 Agency For Defense Development Thermal battery system and ignition method of the same

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Publication number Publication date
KR0123744B1 (en) 1997-12-09

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