Start up system and method for a fuel cell power plant using a cathode electrode fuel purge
    22.
    发明授权
    Start up system and method for a fuel cell power plant using a cathode electrode fuel purge 有权
    启动使用阴极电极燃料吹扫的燃料电池发电厂的系统和方法

    公开(公告)号:US06838199B2

    公开(公告)日:2005-01-04

    申请号:US10329874

    申请日:2002-12-26

    CPC分类号: H01M8/04231

    摘要: The invention is a start up system and method for a fuel cell power plant (10) using a purging of the cathode flow field (38) with a hydrogen rich reducing fluid fuel to minimize corrosion of the cathode electrode (16). The method for starting up the shut down fuel cell power plant (10) includes the steps of: a. purging the cathode flow field (38) with the reducing fluid fuel; b. then, directing the reducing fluid fuel to flow through an anode flow field (28); c. next, terminating flow of the fuel through the cathode flow field (38) and directing an oxygen containing oxidant to flow through the cathode flow field (38); and, d. finally, connecting a primary load (70) to the fuel cell (12) so that electrical current flows from the fuel cell (12) to the primary load (70).

    摘要翻译: 本发明是一种燃料电池发电厂(10)的起动系统和方法,该燃料电池发电厂使用富氢还原流体燃料清除阴极流场(38),以使阴极电极(16)的腐蚀最小化。 用于启动关闭燃料电池发电厂(10)的方法包括以下步骤:a。 用所述还原流体燃料净化所述阴极流场(38); b。 然后引导所述还原流体燃料流过阳极流场(28); C。 接下来,通过阴极流场(38)终止燃料流并引导含氧氧化剂流过阴极流场(38); 和,d。 最后,将主负载(70)连接到燃料电池(12),使得电流从燃料电池(12)流向主负载(70)。

    System and method for shutting down a fuel cell power plant

    公开(公告)号:US06835479B2

    公开(公告)日:2004-12-28

    申请号:US10180393

    申请日:2002-06-26

    IPC分类号: H01M804

    CPC分类号: H01M8/04231

    摘要: The invention is a system and method for shutting down a fuel cell power plant having at least one fuel cell, a primary load, and an auxiliary load that receive electrical current from electrodes of the fuel cell through an external circuit. Shutting down the plant includes disconnecting the primary load; terminating flow of the oxidant through a cathode flow field; connecting the auxiliary load to consume oxygen within the fuel cell; disconnecting the auxiliary load; connecting a power supply to the fuel cell electrodes to increase a concentration of hydrogen within the cathode flow field; and, then, decreasing or eliminating flow of hydrogen into an anode flow field after an equilibrium gas concentration of at least 0.0001% hydrogen, balance fuel cell inert gases, is achieved in both the anode and cathode flow fields.

    End-cell thermal distancing for fuel cell system
    24.
    发明授权
    End-cell thermal distancing for fuel cell system 有权
    燃料电池系统的终端热隔离

    公开(公告)号:US06824901B2

    公开(公告)日:2004-11-30

    申请号:US10225527

    申请日:2002-08-21

    IPC分类号: H01M802

    摘要: A PEM fuel cell system includes a plurality of PEM fuel cells arranged in a stack having two opposed, outwardly facing end surfaces; pressure plates positioned relative to said end surfaces for securing said PEM fuel cells in said stack; and spacer members between said end surfaces and said pressure plates for thermally insulating said end surfaces from said pressure plates.

    摘要翻译: PEM燃料电池系统包括布置在具有两个相对的面向外的端面的堆叠中的多个PEM燃料电池; 相对于所述端面定位的压板,用于将所述PEM燃料电池固定在所述堆叠中; 以及在所述端面和所述压板之间的间隔件,用于将所述端面与所述压板绝热。

    Molten carbonate fuel cell integral matrix tape and bubble barrier
    25.
    发明授权
    Molten carbonate fuel cell integral matrix tape and bubble barrier 失效
    熔融碳酸盐燃料电池整体矩阵胶带和气泡屏障

    公开(公告)号:US4526845A

    公开(公告)日:1985-07-02

    申请号:US516833

    申请日:1983-07-25

    摘要: A molten carbonate fuel cell matrix material is described made up of a matrix tape portion and a bubble barrier portion. The matrix tape portion comprises particles inert to molten carbonate electrolyte, ceramic particles and a polymeric binder, the matrix tape being flexible, pliable and having rubber-like compliance at room temperature. The bubble barrier is a solid material having fine porosity up to about 50% by volume, optionally being bonded to the matrix tape. In operation in a fuel cell, the polymer binder burns off leaving the matrix and bubble barrier providing superior sealing, stability and performance properties to the fuel cell stack.

    摘要翻译: 描述了由矩阵带部分和气泡阻挡部分组成的熔融碳酸盐燃料电池基体材料。 基质带部分包括对熔融碳酸盐电解质,陶瓷颗粒和聚合物粘合剂惰性的颗粒,该基质带在室温下是柔性的,柔韧的并具有类似橡胶的柔顺性。 气泡屏障是具有高达约50体积%的细孔率的固体材料,任选地结合到基质带上。 在燃料电池中操作时,聚合物粘合剂燃烧掉离开基体和气泡阻挡层,为燃料电池堆提供优异的密封性,稳定性和性能。

    Single reactant gas flow field plate PEM fuel cell
    27.
    发明授权
    Single reactant gas flow field plate PEM fuel cell 有权
    单反应气体流场板PEM燃料电池

    公开(公告)号:US07871732B2

    公开(公告)日:2011-01-18

    申请号:US11988700

    申请日:2005-07-15

    IPC分类号: H01M8/24 H01M2/38

    摘要: A fuel cell stack (32) includes a plurality of fuel cells in which each fuel cell is formed between a pair of conductive, porous, substantially hydrophilic plates (17) having oxidant reactant gas flow field channels (12-15) on a first surface and fuel reactant gas flow field channels (19, 19a) on a second surface opposite to the first surface, each ˜f the plates being separated from a plate adjacent thereto by a unitized electrode assembly (20) including a cathode electrode (22), having a gas diffusion layer (GDL) an anode electrode (23) having a GDL with catalyst between each GDL and a membrane (21) disposed therebetween. Above the stack is a condenser (33} having tubes (34) that receive coolant air (39, 40} to condense water vapor out of oxidant exhaust in a chamber (43). Inter-cell wicking strips (26) receive condensate and conduct it along the length of the stack to all cells. In-cell wicking strips (1G, 1 ˜a) on one or both surfaces conduct the water from the inter-cell wicking strips downwardly along the entire planform of each cell. Reactant air is provided to an air inlet manifold (47) through an air inlet conduit (48) from an air pump (49).

    摘要翻译: 燃料电池堆(32)包括多个燃料电池,其中每个燃料电池形成在一对导电的,多孔的,基本上亲水的板(17)之间,该板在第一表面上具有氧化剂反应物气体流场通道(12-15) 以及在与第一表面相对的第二表面上的燃料反应物气体流场通道(19,19a),每个板通过包括阴极电极(22)的组合电极组件(20)与与其相邻的板分离, 具有气体扩散层(GDL),在每个GDL和设置在其间的膜(21)之间具有GDL的具有催化剂的阳极电极(23)。 在堆叠之上是具有管(34)的冷凝器(33),其具有接收冷却剂空气(39,40)以将水蒸汽冷凝在室(43)中的氧化剂排气中。细胞间芯吸条(26)接收冷凝物和导管 在一个或两个表面上的细胞内吸液条(1G,1〜a)沿着每个电池的整个平面向下引导细胞内芯吸条带的水,反应物空气为 通过来自空气泵(49)的空气入口导管(48)提供给进气歧管(47)。

    Catalytic combustors keeping contained medium warm in response to hydrostatic valve
    29.
    发明申请
    Catalytic combustors keeping contained medium warm in response to hydrostatic valve 有权
    催化燃烧器保持含有介质温度响应静液阀

    公开(公告)号:US20090280036A1

    公开(公告)日:2009-11-12

    申请号:US11794599

    申请日:2005-10-31

    IPC分类号: B01J19/00

    摘要: Water (9) in a fuel cell accumulator (10) is kept above freezing by a hydrogen/oxygen catalytic combustor (13) fed hydrogen through a mechanical thermostatic valve (25) in thermal communication (26) with the container (10) or the air nearby, and connected to hydrogen (28), optionally in series with a timer valve (183). The combustor may comprise an ejector (32) having hydrogen through its primary inlet (31) drawing air through a secondary inlet (33), or a diffusion combustor having a catalyst (38), including TEFLON® to permit water generated by combustion to flow by gravity out of the catalyst, spaced from a heating surface (30), and a diffusion control device (40); low partial pressure of oxygen at the catalyst causing diffusion through the device. Combustion vapor condenses on a surface (146) and is led by hydrophilic woven carbon paper (126) and wicking material (133) downwardly, through a disk (140) and plugs (147) either to ambient to a salt canister (190), or to a porous hydrophilic mixer (200) for mixture with antifreeze (206).

    摘要翻译: 燃料电池蓄能器(10)中的水(9)通过氢气/氧气催化燃烧器(13)保持高于通过与容器(10)热交换的机械恒温阀(25)或氢气 空气附近,并连接到氢(28),任选地与定时阀(183)串联。 燃烧器可以包括具有通过其主入口(31)的氢气的喷射器(32),其通过次级入口(33)抽吸空气,或者具有催化剂(38)的扩散燃烧器,包括TEFLON以允许由燃烧产生的水 通过重力流出催化剂,与加热表面(30)间隔开;以及扩散控制装置(40); 在催化剂下氧的低分压导致通过该装置的扩散。 燃烧蒸气在表面(146)上冷凝,并且由亲水性编织碳纸(126)和芯吸材料(133)向下引导通过盘(140)和塞子(147)到环境到盐罐(190), 或与用于与防冻剂(206)混合的多孔亲水混合器(200)。

    Single plate pem fuel cell
    30.
    发明申请
    Single plate pem fuel cell 有权
    单板pem燃料电池

    公开(公告)号:US20090123807A1

    公开(公告)日:2009-05-14

    申请号:US11988700

    申请日:2005-07-15

    IPC分类号: H01M2/38

    摘要: A fuel cell stack (32) includes a plurality of fuel cells in which each fuel cell is formed between a pair of conductive, porous, substantially hydrophilic plates (17) having oxidant reactant gas flow field channels (12-15) on a first surface and fuel reactant gas flow field channels (19, 19a) on a second surface opposite to the first surface, each ˜f the plates being separated from a plate adjacent thereto by a unitized electrode assembly (20) including a cathode electrode (22), having a gas diffusion layer (GDL) an anode electrode (23) having a GDL with catalyst between each GDL and a membrane (21) disposed therebetween. Above the stack is a condenser (33} having tubes (34) that receive coolant air (39, 40) to condense water vapor out of oxidant exhaust in a chamber (43). Inter-cell wicking strips (26) receive condensate and conduct it along the length of the stack to all cells. In-cell wicking strips (1G. 1˜a) on one or both surfaces conduct the water from the inter-cell wicking strips downwardly along the entire planform of each cell. Reactant air is provided to an air inlet manifold (47) through an air inlet conduit (48) from an air pump (49).

    摘要翻译: 燃料电池堆(32)包括多个燃料电池,其中每个燃料电池形成在一对导电的,多孔的,基本上亲水的板(17)之间,该板在第一表面上具有氧化剂反应物气体流场通道(12-15) 以及在与第一表面相对的第二表面上的燃料反应物气体流场通道(19,19a),每个板通过包括阴极电极(22)的组合电极组件(20)与其相邻的板分离, 具有气体扩散层(GDL),在每个GDL和设置在其间的膜(21)之间具有GDL的具有催化剂的阳极电极(23)。 在堆叠之上是具有容纳冷却剂空气(39,40)的管(34)的冷凝器(33),以将水蒸汽冷凝在室(43)中的氧化剂排气中。细胞内芯吸条(26)接收冷凝物和导管 在一个或两个表面上的细胞内吸液条(1G。1〜a)沿着每个电池的整个平面向下传导细胞间芯吸条带的水,反应物空气为 通过来自空气泵(49)的空气入口导管(48)提供给进气歧管(47)。