Retaining water in a fuel cell stack for cooling and humidification during frozen startup
    1.
    发明授权
    Retaining water in a fuel cell stack for cooling and humidification during frozen startup 有权
    在冷冻启动期间保持燃料电池堆中的水进行冷却和加湿

    公开(公告)号:US07645531B2

    公开(公告)日:2010-01-12

    申请号:US11918624

    申请日:2005-04-15

    IPC分类号: H01M8/04

    摘要: A fuel cell power plant (19, 19a) has a plurality of fuel cells (70, 70a, 70c) arranged in a stack (20, 20c), each fuel cell having porous, at least partially hydrophilic water transport plates (75, 81) with fuel (74) and oxidant (82) reactant gas channels, there being water channels (78, 85, 78a, 85a, 78c, 85c) exchanging water with the water transport plates. On shut down, water is retained in the water channels and water transport plates by means of either a micro vacuum pump (46), one or two valves (89, 90, 118, 120), a check valve (95, 99), capillary force in the water channels to prevent water from entering the reactant channels which, if frozen, could block flow of reactant gas upon startup.

    摘要翻译: 燃料电池发电厂(19,19a)具有以堆叠(20,20c)排列的多个燃料电池(70,70a,70c),每个燃料电池具有多孔的,至少部分亲水的水输送板(75,81 )与燃料(74)和氧化剂(82)反应物气体通道,存在与水输送板交换水的水通道(78,85,78a,85a,78c,85c)。 关闭时,通过微型真空泵(46),一个或两个阀(89,90,118,120),止回阀(95,99),水被保持在水通道和水输送板中, 水通道中的毛细管力,以防止水进入反应物通道,如果冷冻,则可能阻止反应气体在启动时流动。

    Fuel cells evaporative reactant gas cooling and operational freeze prevention
    2.
    发明授权
    Fuel cells evaporative reactant gas cooling and operational freeze prevention 有权
    燃料电池蒸发反应物气体冷却和操作防冻

    公开(公告)号:US07579098B2

    公开(公告)日:2009-08-25

    申请号:US11230066

    申请日:2005-09-19

    IPC分类号: H01M8/02 H01M8/04

    摘要: Fuel cells (38) have water passageways (67; 78, 85; 78a, 85a) that provide water through reactant gas flow field plates (74, 81) to cool the fuel cell. The water passageways may be vented to atmosphere (99), by a porous plug (69), or pumped (89, 146) with or without removing any water from the passageways. A condenser (59, 124) receives reactant air exhaust, may have a contiguous reservoir (64, 128), may be vertical, (a vehicle radiator, FIG. 2), may be horizontal, contiguous with the top of the fuel cell stack (37, FIG. 5), or below (124) the fuel cell stack (120). The passageways may be grooves (76, 77; 83, 84) or may comprise a plane of porous hydrophilic material (78a, 85a) contiguous with substantially the entire surface of one or both of the reactant gas flow field plates. Air flow in the condenser may be controlled by shutters (155). The condenser may be a heat exchanger (59a) having freeze-proof liquid flowing through a coil (161) thereof, the amount being controlled by a valve (166). A deionizer (175) may be used.

    摘要翻译: 燃料电池(38)具有通过反应气体流场板(74,81)提供水以冷却燃料电池的水通道(67; 78,85; 78a,85a)。 水通道可以通过多孔塞(69)排放到大气(99),或者通过或不从通道中去除任何水而被泵送(89,146)。 冷凝器(59,124)接收反应物排气,可以具有连续的储存器(64,128),其可以是垂直的(图2的车辆散热器)可以是水平的,与燃料电池堆的顶部邻接 (37,图5)或下面(124)燃料电池堆(120)。 通道可以是凹槽(76,77; 83,84),或者可以包括与反应物气体流场板中的一个或两个的基本上整个表面相邻的多孔亲水材料(78a,85a)的平面。 冷凝器中的气流可由百叶窗(155)控制。 冷凝器可以是具有流过其线圈(161)的防冻液体的热交换器(59a),其量由阀(166)控制。 可以使用去离子器(175)。

    Retaining water in a fuel cell stack for cooling and humidification during frozen startup
    3.
    发明申请
    Retaining water in a fuel cell stack for cooling and humidification during frozen startup 有权
    在冷冻启动期间保持燃料电池堆中的水进行冷却和加湿

    公开(公告)号:US20090061262A1

    公开(公告)日:2009-03-05

    申请号:US11918624

    申请日:2005-04-15

    IPC分类号: H01M8/04 H01M8/10

    摘要: A fuel cell power plant (19, 19a) has a plurality of fuel cells (70, 70a, 70c) arranged in a stack (20, 20c), each fuel cell having porous, at least partially hydrophilic water transport plates (75, 81) with fuel (74) and oxidant (82) reactant gas channels, there being water channels (78, 85, 78a, 85a, 78c, 85c) exchanging water with the water transport plates. On shut down, water is retained in the water channels and water transport plates by means of either a micro vacuum pump (46), one or two valves (89, 90, 118, 120), a check valve (95, 99), capillary force in the water channels to prevent water from entering the reactant channels which, if frozen, could block flow of reactant gas upon startup.

    摘要翻译: 燃料电池发电厂(19,19a)具有以堆叠(20,20c)排列的多个燃料电池(70,70a,70c),每个燃料电池具有多孔的,至少部分亲水的水输送板(75,81 )与燃料(74)和氧化剂(82)反应物气体通道,存在与水输送板交换水的水通道(78,85,78a,85a,78c,85c)。 关闭时,通过微型真空泵(46),一个或两个阀(89,90,118,120),止回阀(95,99),水被保持在水通道和水输送板中, 水通道中的毛细管力,以防止水进入反应物通道,如果冷冻,则可能阻止反应气体在启动时流动。

    Controlling an amount of liquid within a fuel cell
    9.
    发明授权
    Controlling an amount of liquid within a fuel cell 有权
    控制燃料电池内的液体量

    公开(公告)号:US08124287B2

    公开(公告)日:2012-02-28

    申请号:US12516398

    申请日:2006-12-22

    IPC分类号: H01M8/06

    摘要: A method of controlling an amount of liquid in a fuel cell includes increasing the oxygen utilization within the fuel cell to increase heat. The heat reduces the amount of liquid in the fuel cell. A disclosed example method includes decreasing a supply of air to the fuel cell to lower a fuel cell voltage by increasing the oxygen utilization. The example method includes maintaining an essentially electrical current density while decreasing the supply of air.

    摘要翻译: 控制燃料电池中的液体量的方法包括增加燃料电池内的氧气利用率以增加热量。 热量减少燃料电池中的液体量。 所公开的示例方法包括通过增加氧气利用来减少向燃料电池供应空气以降低燃料电池电压。 该示例性方法包括在减少空气供应的同时保持基本上电流密度。

    HYDROGEN PASSIVATION SHUT DOWN SYSTEM FOR A FUEL CELL POWER PLANT
    10.
    发明申请
    HYDROGEN PASSIVATION SHUT DOWN SYSTEM FOR A FUEL CELL POWER PLANT 有权
    用于燃料电池的氢气灭火系统

    公开(公告)号:US20110003222A1

    公开(公告)日:2011-01-06

    申请号:US12880493

    申请日:2010-09-13

    IPC分类号: H01M8/04

    摘要: The invention is a hydrogen passivation shut down system for a fuel cell power plant (10). An anode flow path (24) is in fluid communication with an anode catalyst (14) for directing hydrogen fuel to flow adjacent to the anode catalyst (14), and a cathode flow path (38) is in fluid communication with a cathode catalyst (16) for directing an oxidant to flow adjacent to the cathode catalyst (16) of a fuel cell (12). Hydrogen fuel is permitted to transfer between the anode flow path (24) and the cathode flow path (38). A hydrogen reservoir (66) is secured in fluid communication with the anode flow path (24) for receiving and storing hydrogen during fuel cell (12) operation, and for releasing the hydrogen into the fuel cell (12) whenever the fuel cell (12) is shut down.

    摘要翻译: 本发明是用于燃料电池发电厂(10)的氢钝化关闭系统。 阳极流动路径(24)与阳极催化剂(14)流体连通,用于引导氢燃料相邻于阳极催化剂(14)流动,并且阴极流动路径(38)与阴极催化剂 16),用于引导氧化剂流过邻近燃料电池(12)的阴极催化剂(16)。 允许氢燃料在阳极流路(24)和阴极流路(38)之间传递。 储氢器(66)被固定成与阳极流动路径(24)流体连通,用于在燃料电池(12)操作期间接收和储存氢气,并且每当燃料电池(12)被释放时,氢气释放到燃料电池 )被关闭。