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    • 1. 发明申请
    • METHOD FOR IMPROVING THE WATER BALANCE OF FUEL CELLS
    • 方法,提高燃料电池的水分平衡
    • WO02059992A3
    • 2003-07-31
    • PCT/EP0200360
    • 2002-01-16
    • DAIMLER CHRYSLER AGERDLE ERICHKOCH ALFREDKONRAD GERHARDSCHMID OTTMAR
    • ERDLE ERICHKOCH ALFREDKONRAD GERHARDSCHMID OTTMAR
    • H01M8/04029H01M8/04119H01M8/04
    • H01M8/04029H01M8/04119H01M2300/0082
    • The invention relates to a method for improving the water balance of an electrochemical cell stack, comprising: - a membrane electrode assembly (MEA) consisting of an anode, a cathode and an electrolyte arranged therebetween; - an anode gas chamber for distributing the anode gas to the membrane electrode assembly, said anode gas containing hydrogen and being de-humidified or partially humidified; - a cathode gas chamber for distributing the cathode gas to the membrane electrode assembly, said cathode gas containing oxygen; - a cooling chamber for distributing a coolant for cooling the cell stack, said cooling chamber being separated from the cathode gas chamber (3) by a porous separation plate (6). According to the invention, water is exchanged between the cathode gas and the coolant through the porous separation plate (6), located between the cathode gas chamber (3) and the cooling chamber (4), by means of an aqueous coolant, which has a lower temperature-dependent water-vapour partial pressure in relation to water.
    • 本发明涉及改进的电化学电池堆的水平衡的方法,包括: - 阳极构成的膜 - 电极组件(MEA),阴极和电解质置于其间, - 所述阳极气体的分布的阳极气体室向膜电极 部分,其中含有氢的阳极气体,和非或teilbefeuchtet, - 阴极气体室的阴极气体分配到所述膜电极组件,其中,所述阴极气体含有氧; - 用于分配用于冷却电池组,冷却室和阴极气体室的冷却介质的冷却室由多孔分离器分离6. 3 根据本发明,实现与水性冷却介质,其具有上悬停较低的水温度依赖水汽,经由中间阴极气体室3及冷却室4设置多孔隔板6,水的阴极气体和冷却介质之间的热交换。
    • 2. 发明申请
    • VERFAHREN ZUR VERBESSERUNG DES WASSERHAUSHALTS VON BRENNSTOFFZELLEN
    • 方法,提高燃料电池的水分平衡
    • WO2002059992A2
    • 2002-08-01
    • PCT/EP2002/000360
    • 2002-01-16
    • DAIMLERCHRYSLER AGERDLE, ErichKOCH, AlfredKONRAD, GerhardSCHMID, Ottmar
    • ERDLE, ErichKOCH, AlfredKONRAD, GerhardSCHMID, Ottmar
    • H01M8/00
    • H01M8/04029H01M8/04119H01M2300/0082
    • Die Erfindung betrifft ein Verfahren zur Verbesserung des Wasserhaushalts eines elektrochemischen zellenstapels, welcher umfasst: - einer Membran-Elektroden-Einheit (MEA) aus einer Anode, einer Kathode und einer dazwischen angeordneten Elektrolyten, - eine Anodengaskammer zur Verteilung des Anodengases an die Membran-Elektroden-Einheit, wobei das Anodengas Wasserstoff enthält sowie un- oder teilbefeuchtet ist, - eine Kathodengaskammer zur Verteilung des Kathodengases an die Membran-Elektroden-Einheit, wobei das Kathodengas Sauerstoff enthält; - eine Kühlkammer zur Verteilung eines Kühlmediums zur Kühlung des Zellenstapels, wobei die Kühlkammer und die Kathodengaskammer 3 durch eine poröse Separatorplatte 6 getrennt sind. Gemäß der Erfindung wird mit einem wässrigen Kühlmedium, welches einen gegen-über Wasser niedrigeren temperaturabhängigen Wasserdampfpartialdruck aufweist, über die zwischen Kathodengaskammer 3 und Kühlkammer 4 angeordnete poröse Separatorplatte 6 ein Wasseraustausch zwischen dem Kathodengas und dem Kühlmedium realisiert.
    • 本发明涉及改进的电化学电池堆的水平衡的方法,包括: - 阳极构成的膜 - 电极组件(MEA),阴极和电解质置于其间, - 所述阳极气体的分布的阳极气体室向膜电极 部分,其中含有氢的阳极气体,和非或teilbefeuchtet, - 阴极气体室的阴极气体分配到所述膜电极组件,其中,所述阴极气体含有氧; - 用于分配用于冷却电池组,冷却室和阴极气体室的冷却介质的冷却室由多孔分离器分离6. 3 根据本发明,实现与水性冷却介质,其具有上悬停较低的水温度依赖水汽,经由中间阴极气体室3及冷却室4设置多孔隔板6,水的阴极气体和冷却介质之间的热交换。
    • 3. 发明申请
    • ELECTROCHEMICAL FUEL CELL STACK COMPRISING A POLYMER ELECTROLYTE
    • 有高分子电解质的电化学燃料电池堆栈
    • WO0135476A8
    • 2001-06-14
    • PCT/DE0003782
    • 2000-10-26
    • DORNIER GMBHSCHMID OTTMARHELLER COSMASMARTIN UDO
    • SCHMID OTTMARHELLER COSMASMARTIN UDO
    • H01M8/0202H01M8/04007H01M8/04014H01M8/04119H01M8/2465H01M8/00
    • H01M8/04014H01M8/0202H01M8/04007H01M8/04074H01M8/04156H01M8/2465H01M2300/0082
    • The invention relates to an electrochemical fuel cell stack, comprising - at least one membrane-electrode unit consisting of an anode, a cathode and an electrolyte membrane arranged therebetween, - at least one gas distribution structure on the anode side with an anode gas entry zone, an anode gas exit zone, in addition to channels for guiding the anode gas from the anode gas entry zone to the anode gas exit zone, said anode gas containing hydrogen, - at least one gas distribution structure on the cathode side with a cathode gas entry zone, a cathode gas exit zone, in addition to channels for guiding the cathode gas from the cathode gas entry zone to the cathode gas exit zone, said cathode gas containing oxygen and water vapour, - a coolant distribution structure with a coolant entry zone, a coolant exit zone, in addition to channels for guiding the coolant from the coolant entry zone to the coolant exit zone. According to the invention, the coolant entry zone and the cathode gas exit zone overlap at least partially, in such a way that the water vapour can condense out of the cathode waste gas in this overlap zone.
    • 本发明涉及包含阳极,阴极和电解质膜介于其间的至少一个膜电极组件的电化学燃料电池堆; 至少一个阳极侧气体分配器结构具有阳极气体入口区域,阳极气体出口区域和用于从阳极气体入口区域引导阳极气体至阳极气体出口区域通道,含有氢的阳极气体; 具有阴极气体入口区域,阴极气体出口区域和用于从阴极气体入口区域引导所述阴极气体的阴极气体出口区域,氧气和水蒸汽,具有冷却介质入口区,一个冷却介质出口区域和用于从冷却介质入口区域的冷却介质引导到冷却介质出口区域的通道的冷却介质分配器结构的阴极气体通道的至少一个阴极侧气体分布结构。 根据本发明的冷却介质入口区域和阴极气体出口区域至少部分地重叠,使得在该区域覆盖的水蒸汽的冷凝可在阴极废气中来实现。