Polymer electrolyte fuel cell
    51.
    发明授权
    Polymer electrolyte fuel cell 有权
    聚合物电解质燃料电池

    公开(公告)号:US07491459B2

    公开(公告)日:2009-02-17

    申请号:US11344095

    申请日:2006-02-01

    IPC分类号: H01M8/10 H01M8/04 H01M8/02

    摘要: The polymer electrolyte fuel cell of the present invention is equipped with a cell having an MEA having a hydrogen ion-conducting polymer electrolyte membrane and an anode and a cathode sandwiching the polymer electrolyte membrane; a platelike anode-side separator positioned on one side of the MEA so that the front surface thereof contacts the anode, with fuel gas passages through which fuel gas flows being formed in the front surface; and a platelike cathode-side separator positioned on the other side of the MEA so that the front surface thereof contacts the cathode, with oxidizing gas passages through which oxidizing gas flows being formed in the front surface; a cell stack in which a plurality of said cells is stacked; and a cooling water flow passage, through which cooling water flows, formed on at least the rear surface of one from among the anode-side separator and the cathode-side separator of at least a prescribed cell in said cell stack; where said fuel gas, oxidizing gas, and cooling water flow through said fuel gas passage, oxidizing gas passage, and cooling water passage, respectively, in a manner not running counter to gravity.

    摘要翻译: 本发明的高分子电解质型燃料电池装备有具有氢离子传导性高分子电解质膜的MEA的电池和夹着聚合物电解质膜的阳极和阴极, 位于MEA的一侧上的板状阳极侧隔板,使得其前表面接触阳极,燃料气体在其前表面形成的燃料气体通道; 位于MEA的另一侧的板状阴极侧隔板,其前表面与阴极接触,在前表面形成有氧化气体流过的氧化气体通道; 堆叠多个所述单元的单元堆叠; 以及至少在所述电池堆中的至少规定电池的阳极侧隔板和阴极侧隔板之间的至少后表面上形成有冷却水流过的冷却水流路; 其中所述燃料气体,氧化气体和冷却水分别以不重力的方式流过所述燃料气体通道,氧化气体通道和冷却水通道。

    Fuel cell
    52.
    发明授权
    Fuel cell 有权
    燃料电池

    公开(公告)号:US08137863B2

    公开(公告)日:2012-03-20

    申请号:US12020249

    申请日:2008-01-25

    IPC分类号: H01M2/14

    摘要: Even if reaction gas flows into a substantially rectangular anode-side and cathode-side gaps formed between an annular main body portion and a membrane electrode assembly in an anode side and a cathode side of a fuel cell, the reaction gas is prevented from flowing out from an outlet without passing through an electrode to cause degradation of power generation efficiency. At least one of anode-side gasket and cathode-side gasket in the fuel cell is provided with an extra sealing portion connected to an annular main body portion in such a manner that, among two pairs of gap portions opposing to each other in the anode-side gap and the cathode-side gap, the extra sealing portion intersects with one pair of gap portions having a larger pressure gradient of fuel gas and oxidant gas in a direction from an upstream side to a downstream side of a fuel gas flow channel and an oxidant gas flow channel.

    摘要翻译: 即使反应气体流入在燃料电池的阳极侧和阴极侧形成于环状主体部与膜电极组件之间的大致矩形的阳极侧和阴极侧的间隙,也能够防止反应气体流出 从而不通过电极而导致发电效率降低。 燃料电池中的阳极侧衬垫和阴极侧衬垫中的至少一个设置有与环形主体部分连接的额外的密封部分,使得在阳极中彼此相对的两对间隙部分中 所述多个密封部与燃料气体和氧化剂气体的压力梯度比从燃料气体流路的上游侧向下游侧更大的压力梯度的一对间隙相交, 氧化剂气体流动通道。

    Fuel cell
    56.
    发明授权
    Fuel cell 有权
    燃料电池

    公开(公告)号:US06960407B2

    公开(公告)日:2005-11-01

    申请号:US10635692

    申请日:2003-08-06

    摘要: A fuel cell having high operation performance and reliability is provided by optimizing the shape and properties of a gas diffusion layer and the dimensions of a gas flow channel. The fuel cell evenly supplies a reaction gas to the catalyst of a catalyst layer and promptly discharges excessive water generated therein. The gas diffusion layer of the MEA comprises a first section having a surface A coming in direct contact with a separator plate and a second section having a surface B facing the gas flow channel of the separator plate. The porosity of the first section is lower than the porosity of the second section, and the second section protrudes into the gas flow channel, which has sufficient width and depth for the protrusion of the gas diffusion layer, and the width of a rib formed by the gas flow channel is sufficiently narrow.

    摘要翻译: 通过优化气体扩散层的形状和性质以及气体流路的尺寸来提供具有高操作性能和可靠性的燃料电池。 燃料电池将催化剂层的催化剂均匀地供给反应气体,并迅速排出其中产生的过量水。 MEA的气体扩散层包括具有与分隔板直接接触的表面A的第一部分和具有面向隔板的气体流动通道的表面B的第二部分。 第一部分的孔隙率低于第二部分的孔隙率,第二部分突出到气体流动通道中,气流通道具有足够的宽度和深度用于气体扩散层的突起,并且肋的宽度由 气体流动通道足够窄。

    Polymer electrolyte fuel cell
    57.
    发明申请
    Polymer electrolyte fuel cell 审中-公开
    聚合物电解质燃料电池

    公开(公告)号:US20050026009A1

    公开(公告)日:2005-02-03

    申请号:US10873652

    申请日:2004-06-23

    摘要: The polymer electrolyte fuel cell of the present invention is equipped with a cell having an MEA having a hydrogen ion-conducting polymer electrolyte membrane and an anode and a cathode sandwiching the polymer electrolyte membrane; a platelike anode-side separator positioned on one side of the MEA so that the front surface thereof contacts the anode, with fuel gas passages through which fuel gas flows being formed in the front surface; and a platelike cathode-side separator positioned on the other side of the MEA so that the front surface thereof contacts the cathode, with oxidizing gas passages through which oxidizing gas flows being formed in the front surface; a cell stack in which a plurality of said cells is stacked; and a cooling water flow passage, through which cooling water flows, formed on at least the rear surface of one from among the anode-side separator and the cathode-side separator of at least a prescribed cell in said cell stack; where said fuel gas, oxidizing gas, and cooling water flow through said fuel gas passage, oxidizing gas passage, and cooling water passage, respectively, in a manner not running counter to gravity.

    摘要翻译: 本发明的高分子电解质型燃料电池装备有具有氢离子传导性高分子电解质膜的MEA的电池和夹着聚合物电解质膜的阳极和阴极, 位于MEA的一侧上的板状阳极侧隔板,使得其前表面接触阳极,燃料气体在其前表面形成的燃料气体通道; 位于MEA的另一侧的板状阴极侧隔板,其前表面与阴极接触,在前表面形成有氧化气体流过的氧化气体通道; 堆叠多个所述单元的单元堆叠; 以及在所述电池组中的至少规定电池的阳极侧隔板和阴极侧隔板的至少后表面上形成冷却水流过的冷却水流路, 其中所述燃料气体,氧化气体和冷却水分别以不重力的方式流过所述燃料气体通道,氧化气体通道和冷却水通道。

    Separator plate and fuel cell
    60.
    发明授权
    Separator plate and fuel cell 有权
    隔板和燃料电池

    公开(公告)号:US07790324B2

    公开(公告)日:2010-09-07

    申请号:US12278128

    申请日:2007-01-30

    IPC分类号: H01M2/14 H01M8/12 H01M4/00

    摘要: The invention relates to a separator plate for use in a fuel cell and to a fuel cell. The separator plate has: a passage groove group including a plurality of gas passage grooves 35 formed so as to extend in serpentine form; and a communicating groove 33 configured to provide fluid communication between adjacent portions of the gas passage grooves. Various separator plates have heretofore been disclosed in public by many documents and the blockage of the gas passage grooves caused by condensed water droplets formed therein is deemed to be properly prevented. However, the inventors think that those separator plates have a critical oversight in the behavior of a gas-liquid two phase fluid including a reaction gas and condensed water. That is, the condensed water is likely to concentrate in the vicinity of the gas passage grooves located in the downstream side of such separator plates and therefore these separator plates are liable to blockage. The invention intends to overcome the above problem by making the communicating groove 33 shallower than the gas passage grooves.

    摘要翻译: 本发明涉及一种用于燃料电池和燃料电池的隔板。 隔板具有:通道槽组,包括形成为以蛇形形式延伸的多个气体通道槽35; 以及构造成在气体通道槽的相邻部分之间提供流体连通的连通槽33。 迄今为止已经公开公开了各种分隔板,许多文件都认为可以适当地防止由其中形成的冷凝水滴引起的气体通道槽的堵塞。 然而,发明人认为,这些隔板对包括反应气体和冷凝水的气液两相流体的行为具有严格的监督。 也就是说,冷凝水可能集中在位于这种隔板的下游侧的气体通道槽附近,因此这些隔板容易堵塞。 本发明旨在通过使连通槽33比气体通道凹槽更浅而克服上述问题。