Solid polymer fuel cell system: high current density operation
    1.
    发明授权
    Solid polymer fuel cell system: high current density operation 失效
    固体聚合物燃料电池系统:高电流密度操作

    公开(公告)号:US5064732A

    公开(公告)日:1991-11-12

    申请号:US477792

    申请日:1990-02-09

    申请人: Alfred P. Meyer

    发明人: Alfred P. Meyer

    IPC分类号: H01M8/04

    摘要: The incorporation of the hydrophilic porous element and the heat pipes in a fuel cell system enables high current density operation with a simplified accessory section as well as simplified controls, improved reliance and efficiency, and decreased maintenance and maintenance costs. The porous element, replacing the circulating pump and condenser of conventional systems, removes water from the cathode, wets the anode, and removes excess water from the system. The heat pipe system, replacing the coolant pump, coolant heat exchanger, and thermal and other controls, removes waste heat from the system.

    摘要翻译: 在燃料电池系统中并入亲水性多孔元件和热管能够通过简化的附件部分实现高电流密度操作,并且简化控制,提高依赖性和效率,降低维护和维护成本。 替代常规系统的循环泵和冷凝器的多孔元件从阴极去除水,润湿阳极,并从系统中除去多余的水。 热管系统,更换冷却液泵,冷却剂热交换器,以及热和其他控制器,可以清除系统中的废热。

    Water management system for solid polymer electrolyte fuel cell power
plants
    2.
    发明授权
    Water management system for solid polymer electrolyte fuel cell power plants 失效
    固体聚合物电解质燃料电池发电厂水管理系统

    公开(公告)号:US5503944A

    公开(公告)日:1996-04-02

    申请号:US497674

    申请日:1995-06-30

    IPC分类号: H01M8/10 H01M8/04 H01M8/06

    摘要: A simplified solid polymer electrolyte fuel cell power plant utilizes porous conductive separator plates having central passages which are filled with circulating coolant water. The coolant water passes through a heat exchanger which rejects heat generated in the power plant. Water appearing on the cathode side of each cell membrane is pumped into the water circulation passages through the porous oxidant reactant flow field plates by a positive .DELTA.P created between the cathode reactant flow field of each cell and the coolant water circulation passages between each cell. In order to create the desired .DELTA.P, at least one of the reactant gas streams will be referenced to the coolant water loop so as to create a coolant loop pressure which is less than the referenced reactant gas stream pressure. Excess water is removed from the coolant water stream. The system can operate at ambient or at elevated pressures. Each cell in the power plant is individually cooled on demand, and the power plant does not require a separate cooling section or reactant stream humidifying devices.

    摘要翻译: 简化的固体聚合物电解质燃料电池发电厂利用具有填充有循环冷却水的中心通道的多孔导电隔板。 冷却水通过热交换器,排除发电厂产生的热量。 出现在每个电池膜的阴极侧的水通过多孔氧化剂反应物流场板通过在每个电池的阴极反应物流场和每个电池之间的冷却水循环通道之间产生的正的DELTA P泵送到水循环通道中。 为了产生所需的DELTA P,反应物气流中的至少一个将以冷却水回路为参考,以产生小于参考反应物气流压力的冷却剂回路压力。 从冷却水流中除去过量的水。 该系统可以在环境温度或高压下工作。 电厂中的每个电池都需要单独冷却,发电厂不需要单独的冷却段或反应物流加湿装置。

    Maximizing PEM fuel cell power plant system efficiency at optimum system pressure
    3.
    发明授权
    Maximizing PEM fuel cell power plant system efficiency at optimum system pressure 有权
    在最佳系统压力下最大化PEM燃料电池发电厂系统效率

    公开(公告)号:US07381491B2

    公开(公告)日:2008-06-03

    申请号:US10754298

    申请日:2004-01-09

    IPC分类号: H01M8/04

    摘要: A PEM fuel cell power plant system (10) has a process air pump (26), which may be a fan, a blower or a compressor, with an adiabatic efficiency of between 40% and 70%. The process air at the inlet 27 of the cathode reactant gas flow field 16 is between 1.07 atmospheres and 1.85 atmospheres, and may be at an optimal pressure for maximum overall system efficiency P={0.45+2.6E−1.8E2} atms±0.2 atms where P is the air inlet pressure and E is the adiabatic efficiency of the process air pump.

    摘要翻译: PEM燃料电池发电厂系统(10)具有处理空气泵(26),其可以是绝热效率在40%至70%之间的风扇,鼓风机或压缩机。 阴极反应物气体流场16的入口27处的处理空气在1.07大气压和1.85大气压之间,并且可以处于用于最大总体系统效率的最佳压力<?in-line-formula description =“In-line Formulas” end =“lead”?> P = {0.45 + 2.6E-1.8E <2> atms±0.2 atms <?in-line-formula description =“In-line Formulas”end =“tail” 其中P是进气压力,E是工艺空气泵的绝热效率。

    Procedure for purging a fuel cell system with inert gas made from organic fuel
    4.
    发明授权
    Procedure for purging a fuel cell system with inert gas made from organic fuel 失效
    用有机燃料制成的惰性气体吹扫燃料电池系统的步骤

    公开(公告)号:US06645650B2

    公开(公告)日:2003-11-11

    申请号:US09975601

    申请日:2001-10-11

    IPC分类号: H01M800

    摘要: A procedure for purging a fuel cell system at start-up or shutdown comprises directing the organic fuel, along with air, into a burner to produce a gas that is essentially inert to the fuel cell, such as a gas of nitrogen, carbon dioxide and water vapor. That inert gas is passed through either or both the fuel cell and fuel processing system components, such as a reformer and shift converter, to purge those components of undesirable gases. In the case of shutdown, after the cell has been disconnected from the primary load, the inert gas produced in the burner is passed either in series or in parallel through the fuel cell and fuel processing system.

    摘要翻译: 用于在启动或关闭时清除燃料电池系统的步骤包括将有机燃料与空气一起引导到燃烧器中以产生对燃料电池基本上惰性的气体,例如氮气,二氧化碳气体和 水蒸气。 惰性气体通过燃料电池和燃料处理系统部件(例如重整器和换档转换器)中的一个或两者,以清除不期望的气体的这些部件。 在停机的情况下,在电池与主负载断开之后,在燃烧器中产生的惰性气体通过燃料电池和燃料处理系统串联或并联通过。