WO2019172646A1 - Dispositif d'évaluation des performances d'un empilement de piles à combustible - Google Patents

Dispositif d'évaluation des performances d'un empilement de piles à combustible Download PDF

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Publication number
WO2019172646A1
WO2019172646A1 PCT/KR2019/002598 KR2019002598W WO2019172646A1 WO 2019172646 A1 WO2019172646 A1 WO 2019172646A1 KR 2019002598 W KR2019002598 W KR 2019002598W WO 2019172646 A1 WO2019172646 A1 WO 2019172646A1
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WO
WIPO (PCT)
Prior art keywords
surface pressure
fuel cell
cell stack
applying
pressure
Prior art date
Application number
PCT/KR2019/002598
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English (en)
Korean (ko)
Inventor
박상현
최광욱
박광연
김대환
박선영
Original Assignee
주식회사 엘지화학
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.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Publication of WO2019172646A1 publication Critical patent/WO2019172646A1/fr

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    • 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
    • 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

Definitions

  • the present invention relates to an apparatus for evaluating the performance of a fuel cell stack. More specifically, the surface pressure assist spring is positioned on one side of a fixed part, thereby reducing the surface pressure applied to the fuel cell stack by reducing the height of the fuel cell stack.
  • the present invention relates to an apparatus for evaluating the performance of a fuel cell stack.
  • Fuel cells are cells that directly convert chemical energy generated by oxidation into electrical energy, and are a new environmentally friendly future energy technology that generates electrical energy from substances rich in the earth such as hydrogen and oxygen.
  • the fuel cell is supplied with oxygen to the cathode and hydrogen to the anode to perform an electrochemical reaction in the form of reverse electrolysis of water, which generates electricity, heat, and water, resulting in high efficiency without causing pollution. Produce electric energy.
  • the separator and the cell are stacked a plurality of times, and end plates for supporting the structure in which the separator and the unit cell are stacked are stacked on both sides.
  • FIG. 1 is a flowchart illustrating a conventional method of applying surface pressure.
  • it provides a high temperature environment and applies surface pressure in the vertical direction to secure the performance of the fuel cell stack through excellent connection between each component of the fuel cell stack such as cells, current collectors, and interconnects. do.
  • the sealing material for bonding the respective components of the fuel cell stack has a fluidity at a high temperature, when the surface pressure is applied, the height of the fuel cell stack is reduced. Furthermore, as the number of unit cells constituting the fuel cell stack increases, the height decrease of the fuel cell stack increases. Therefore, the change speed of the surface pressure device is slower than the change speed of the height of the fuel cell stack, so that a surface pressure is temporarily not applied to the fuel cell stack.
  • the present invention has been made to solve the above-mentioned problems, an object of the present invention, by the surface pressure auxiliary spring is located on one side of the fixing portion for accommodating the fuel cell stack, the surface pressure auxiliary spring by a reduced height of the fuel cell stack at high temperature It is to provide an apparatus for evaluating the performance of a fuel cell stack that restores this elasticity and maintains the surface pressure applied to the fuel cell stack.
  • the present invention provides an apparatus for evaluating the performance of a fuel cell stack in which the variation in the surface pressure applied to the fuel cell stack is reduced by not changing the driving speed of the surface pressure applying device.
  • An apparatus for evaluating the performance of a fuel cell stack includes a main body; A surface pressure applying device positioned inside the main body and configured to apply pressure from an upper direction to a lower direction of a fuel cell stack in which at least one unit cell is stacked; And a surface pressure maintaining device provided at a position opposite to the surface pressure applying device to maintain the surface pressure applied to the fuel cell stack.
  • the surface pressure maintaining device the fixing portion for supporting the fuel cell stack; And a surface pressure auxiliary spring positioned between the fixed part and the main body to maintain a surface pressure applied to the fuel cell stack.
  • the surface pressure assist spring is characterized in that to apply a pressure from the lower side to the upper direction of the fuel cell stack in accordance with the height change of the fuel cell stack.
  • the surface pressure application method of a fuel cell stack accommodates a fuel cell stack having one or more unit cells stacked on a fixed portion, and the surface pressure is applied from the upper side to the lower side of the fuel cell stack using a surface pressure application device. Applying a; And driving the fuel cell stack by raising a temperature inside the main body, and the surface pressure assist spring maintains a surface pressure applied to the fuel cell stack by applying a surface pressure from a lower portion of the fuel cell stack to an upper direction. It is characterized by.
  • the surface pressure auxiliary spring in the step of maintaining the surface pressure characterized in that the elasticity is restored by the reduced height of the fuel cell stack.
  • the surface pressure applying device in the step of maintaining the surface pressure it is characterized in that the position does not move.
  • the surface pressure application method of the fuel cell stack further comprising the step of compressing the surface pressure auxiliary spring by increasing the pressure of the surface pressure application device.
  • the surface of the auxiliary pressure spring is positioned on one side of the fixing portion for accommodating the fuel cell stack, thereby maintaining the surface pressure applied to the fuel cell stack by restoring the elasticity of the pressure auxiliary spring by the reduced height of the fuel cell stack at a high temperature. Effect occurs.
  • FIG. 1 is a flow chart of a surface pressure application method according to a conventional embodiment.
  • FIG. 2 is a perspective view of an apparatus for evaluating the performance of a fuel cell stack according to an exemplary embodiment of the present invention.
  • FIG 3 is a side view of an apparatus for evaluating the performance of a fuel cell stack according to an exemplary embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of applying a surface pressure of a fuel cell stack according to an exemplary embodiment of the present invention.
  • FIG. 2 is a perspective view of an apparatus for evaluating the performance of a fuel cell stack according to an embodiment of the present invention
  • FIG. 3 is a side view of the apparatus for evaluating the performance of a fuel cell stack according to an embodiment of the present invention.
  • the performance evaluation apparatus of the fuel cell stack according to the present invention may include a main body 10, a surface pressure applying device 20, and a surface pressure holding device 30.
  • the main body 10 may include a surface pressure applying device 20 and a surface pressure holding device 30 which will be described later, and a hydraulic cylinder for driving the surface pressure applying device 20 may be positioned thereon.
  • the hydraulic cylinder may receive compressed air from the outside and reciprocate the pressure transmitting rod (not shown) connected thereto. Therefore, the pressure by the hydraulic cylinder is transmitted to the surface pressure applying device 20 via the surface pressure transmission rod to compress the fuel cell stack in the vertical direction.
  • the surface pressure applying device 20 is located inside the main body 10 to apply pressure to the fuel cell stack in which one or more unit cells are stacked, and may be positioned at a position opposite to the surface pressure maintaining device 30 to be described later.
  • the fuel cell stack may be positioned between the fuel cell stack and the surface pressure transmitting rod to apply pressure to the fuel cell stack by reciprocating the surface pressure transmitting rod.
  • the surface pressure holding device 30 is located inside the main body 10 and maintains the surface pressure applied to the fuel cell stack by the surface pressure applying device 20.
  • the holding portion 31 and the surface pressure auxiliary spring 32 May contain
  • the fixing part 31 is configured to accommodate the fuel cell stack and may be provided at a position opposite to the surface pressure applying device 20 to support the fuel cell stack.
  • the surface pressure auxiliary spring 32 may be positioned between the main body 10 and the fixing portion 31 by being positioned on a surface opposite to the surface where the fuel cell stack of the fixing portion 31 is accommodated.
  • the surface pressure assist spring 32 may be compressed to the maximum before the stack evaluation device is driven, and when the stack evaluation device is driven to reduce the height of the fuel cell stack, the elasticity restoration may be restored by the reduced height of the fuel cell stack. can do. That is, the height of the surface pressure assist spring 32 may be increased to the same height as the reduced height of the fuel cell stack, and may be characterized in that the surface pressure is applied from the lower portion of the fuel cell stack to the upper direction.
  • FIG. 4 is a flowchart illustrating a method of applying a surface pressure of a fuel cell stack according to an exemplary embodiment of the present invention.
  • FIG. 4 (a) is a step of applying a surface pressure to the fuel cell stack, which accommodates a fuel cell stack having one or more unit cells stacked on the fixing part 31, and uses the surface pressure applying device 20 to It is a step of applying a surface pressure (L i ) from the upper to the lower direction. At this time, it is noted that the surface pressure auxiliary spring 31 is contracted to the maximum, so that only the surface pressure applying device 20 can apply pressure to the fuel cell stack.
  • the surface pressure assist spring 32 may recover elasticity, and the surface pressure may be applied from the lower portion of the fuel cell stack to the upper portion.
  • the surface pressure assist spring 32 may serve to compensate for the reduced pressure. And, the position of the surface pressure applying device 20 does not change as the height of the fixing portion 21 rises.
  • the surface pressure application method according to the present invention may further include compressing the surface pressure auxiliary spring 32 by increasing the pressure L f of the surface pressure application device 20.
  • the step of compressing the surface pressure auxiliary spring 32 is the position of the surface pressure applying device 20 is moved to the bottom, due to the contraction of the surface pressure auxiliary spring 22 is applied to the fuel cell stack Losing surface pressure can be kept constant.

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  • Fuel Cell (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)

Abstract

La présente invention concerne un dispositif d'évaluation des performances d'un empilement de piles à combustible et, plus particulièrement, un dispositif d'évaluation des performances d'un empilement de piles à combustible, dans lequel un ressort auxiliaire de pression de surface est disposé sur un côté d'une partie de fixation, empêchant ainsi une baisse de pression de surface appliquée à l'empilement de piles à combustible en raison d'une diminution de la hauteur de l'empilement de piles à combustible.
PCT/KR2019/002598 2018-03-06 2019-03-06 Dispositif d'évaluation des performances d'un empilement de piles à combustible WO2019172646A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0026287 2018-03-06
KR1020180026287A KR20190105775A (ko) 2018-03-06 2018-03-06 연료전지 스택의 성능 평가 장치

Publications (1)

Publication Number Publication Date
WO2019172646A1 true WO2019172646A1 (fr) 2019-09-12

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PCT/KR2019/002598 WO2019172646A1 (fr) 2018-03-06 2019-03-06 Dispositif d'évaluation des performances d'un empilement de piles à combustible

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KR (1) KR20190105775A (fr)
WO (1) WO2019172646A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112952175A (zh) * 2019-12-10 2021-06-11 武汉众宇动力系统科技有限公司 用于压装燃料电池堆的压装机及压装方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205762A (ja) * 1992-01-23 1993-08-13 Fuji Electric Co Ltd 単位燃料電池の特性評価装置
KR20090093617A (ko) * 2008-02-29 2009-09-02 부산대학교 산학협력단 연료전지 운전장치 평가시스템
JP2010276520A (ja) * 2009-05-29 2010-12-09 Nissan Motor Co Ltd 積層型電池の面圧分布検出装置
JP2014035907A (ja) * 2012-08-09 2014-02-24 Nissan Motor Co Ltd 燃料電池の電気化学的特性評価装置
WO2018038550A1 (fr) * 2016-08-25 2018-03-01 주식회사 엘지화학 Module de gabarit pour pile à combustible à oxyde solide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800022B1 (ko) 2007-11-22 2008-02-01 나라셀텍(주) 연료전지의 전기화학적 특성 평가 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05205762A (ja) * 1992-01-23 1993-08-13 Fuji Electric Co Ltd 単位燃料電池の特性評価装置
KR20090093617A (ko) * 2008-02-29 2009-09-02 부산대학교 산학협력단 연료전지 운전장치 평가시스템
JP2010276520A (ja) * 2009-05-29 2010-12-09 Nissan Motor Co Ltd 積層型電池の面圧分布検出装置
JP2014035907A (ja) * 2012-08-09 2014-02-24 Nissan Motor Co Ltd 燃料電池の電気化学的特性評価装置
WO2018038550A1 (fr) * 2016-08-25 2018-03-01 주식회사 엘지화학 Module de gabarit pour pile à combustible à oxyde solide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112952175A (zh) * 2019-12-10 2021-06-11 武汉众宇动力系统科技有限公司 用于压装燃料电池堆的压装机及压装方法

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