Polymer electrolyte fuel cell stack
    1.
    发明授权
    Polymer electrolyte fuel cell stack 有权
    聚合物电解质燃料电池堆

    公开(公告)号:US06893759B2

    公开(公告)日:2005-05-17

    申请号:US10758421

    申请日:2004-01-16

    IPC分类号: H01M8/04 H01M8/02

    摘要: In a polymer electrolyte fuel cell stack using a latent heat cooling system, a plurality of first reactant gas flow paths formed in one plate surface of each separator are made substantially linear in the vertical direction, and an arrangement capable of supplying water to the first reactant gas flow paths includes a water manifold formed to extend through the separator, a water supply path branched from the water manifold and horizontally formed in a surface in which second reactant gas flow paths are formed, and communication holes horizontally formed in a first reactant gas flow path introducing portion to allow the water supply path to communicate with the first reactant gas flow paths, and present above the lowermost portion in the vertical direction of the water manifold. With this arrangement, stable power generation can be performed regardless of, e.g., the stack installation angle or vibrations.

    摘要翻译: 在使用潜热冷却系统的固体高分子型燃料电池堆中,形成在各隔板的一个板面上的多个第一反应气体流路在垂直方向上大致呈直线状,并且能够向第一反应物供给水 气体流路包括形成为延伸穿过分离器的水歧管,从水歧管分支并水平形成在其中形成第二反应气体流动通道的表面中的供水通道和在第一反应气流中水平形成的连通孔 路径引导部分,以允许供水路径与第一反应气体流动路径连通,并且存在于水歧管的垂直方向上的最下部分的上方。 利用这种布置,可以执行稳定的发电,而不管例如堆叠安装角度或振动。

    Polymer electrolyte fuel cell stack and method for operating the same and gas vent valve
    3.
    发明授权
    Polymer electrolyte fuel cell stack and method for operating the same and gas vent valve 失效
    聚合物电解质燃料电池堆及其操作方法和排气阀

    公开(公告)号:US07029780B2

    公开(公告)日:2006-04-18

    申请号:US10259725

    申请日:2002-09-30

    摘要: A fuel cell stack comprises membrane electrode assemblies (3) in which gas diffusion electrodes (2a,2b) are arranged on both sides of an ion exchange membrane (1) and a reactant gas supply separators (5) interposed between the membrane electrode assemblies (3). The reactant gas supply separators (5) each has a first surface having first reactant gas supply grooves (9a) for supplying first reactant gas, a second surface having second reactant gas supply grooves (9b) for supplying an second reactant gas, and water supply means for supplying water to the first reactant gas supply grooves (9a). The water supply means has a water supply grooves (15) for introducing water from a water supply manifold (14) disposed on the second surface, communication holes (16) for communication of the second surface with the first surface, and a buffer section (17) having a porous body (20) for uniformly distributing water from the water supply grooves (15) to the communication holes (16). The porous body (20) extends along the second surface. The water flows in the porous body (20) along the second surface. Thus, water can be supplied uniformly to the first reactant gas supply grooves (9a) of each of the reactant gas supply separators (5).

    摘要翻译: 燃料电池堆包括其中气体扩散电极(2a,2b)布置在离子交换膜(1)的两侧上的膜电极组件(3)和置于膜电极之间的反应气体供应隔板(5) 组件(3)。 反应气体供给分离器(5)各自具有:第一表面,具有用于供给第一反应气体的第一反应气供给槽(9a),具有供给第二反应气体的第二反应气供给槽(9b)的第二表面;以及 供水装置,用于向第一反应气体供应槽(9a)供水。 供水装置具有用于从设置在第二表面上的供水歧管(14)引入水的供水槽(15),用于使第二表面与第一表面连通的连通孔(16)和缓冲部分 17)具有用于将水从供水槽(15)均匀分配到连通孔(16)的多孔体(20)。 多孔体(20)沿第二表面延伸。 水沿着第二表面在多孔体(20)中流动。 因此,可以向每个反应气体供给分离器(5)的第一反应气体供给槽(9a)均匀地供给水。