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    Method and apparatus for the operation of a cell stack assembly during subfreezing temperatures
    3.
    发明授权
    Method and apparatus for the operation of a cell stack assembly during subfreezing temperatures 失效
    在解冻温度期间操作细胞堆叠组件的方法和装置

    公开(公告)号：US07282285B2

    公开(公告)日：2007-10-16

    申请号：US10473989

    申请日：2002-04-05

    Applicant: Harold T. Couch ,  Carl A. Reiser ,  Gennady Resnick ,  Deliang Yang ,  Emily A. Dykeman ,  David A. Condit

    Inventor： Harold T. Couch ,  Carl A. Reiser ,  Gennady Resnick ,  Deliang Yang ,  Emily A. Dykeman ,  David A. Condit

    IPC: H01M8/04

    CPC classification number: H01M8/04253 ,  H01M8/0267 ,  H01M8/04029 ,  H01M8/04303 ,  H01M8/2457 ,  H01M8/2465

    Abstract: A cell stack assembly (102) coolant system comprises a coolant exhaust conduit (110) in fluid communication with a coolant exhaust manifold (108) and a coolant pump (112). A coolant inlet conduit (120) enables transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit (132) in fluid communication with the coolant exhaust manifold and the coolant inlet manifold, while a bleed valve (130) is in fluid communication with the coolant exhaust conduit and a source of gas. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through a shut down conduit (124). An increased pressure differential between the coolant and reactant gases forces water out of the pores in the electrode substrates (107,109). An ejector (250) prevents air form inhibiting the pump. Pulsed air is blown (238,239,243,245) through the coolant channels to remove more water.

    Abstract translation: 电池堆组件（102）冷却剂系统包括与冷却剂排气歧管（108）和冷却剂泵（112）流体连通的冷却剂排放导管（110）。 冷却剂入口管道（120）能够将冷却剂输送到冷却剂入口歧管。 冷却剂系统还包括与冷却剂排出歧管和冷却剂入口歧管流体连通的旁通管道（132），而排放阀（130）与冷却剂排放管道和气体源流体连通。 泄放阀的操作使冷却剂从冷却剂通道排出，并通过关闭导管（124）。 冷却剂和反应气体之间的增加的压差迫使水从电极基板（107,109）中的孔隙中流出。 喷射器（250）防止空气形式阻止泵。 脉冲空气通过冷却剂通道吹出（238,239,243,245）以除去更多的水。

    Method and apparatus for the operation of a cell stack assembly during subfreezing temperatures
    4.
    发明授权
    Method and apparatus for the operation of a cell stack assembly during subfreezing temperatures 有权

    公开(公告)号：US06596426B2

    公开(公告)日：2003-07-22

    申请号：US09826739

    申请日：2001-04-05

    Applicant: Deliang Yang ,  Emily A. Ballinger ,  David A. Condit

    Inventor： Deliang Yang ,  Emily A. Ballinger ,  David A. Condit

    IPC: H01M804

    CPC classification number: H01M8/04253 ,  H01M8/04022 ,  H01M8/04029

    Abstract: A coolant system is proposed for addressing temperature concerns during start-up and shut-down of a cell stack assembly. The coolant system comprises a coolant exhaust conduit in fluid communication with a coolant exhaust manifold and a coolant pump, the coolant exhaust conduit enabling transportation of exhausted coolant away from a coolant exhaust manifold. A coolant return conduit is provided to be in fluid communication with a coolant inlet manifold and a coolant pump, the coolant return conduit enabling transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit in fluid communication with the coolant exhaust conduit and the coolant return conduit, while a bleed valve is in fluid communication with the coolant exhaust conduit and a gaseous stream. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through said bypass conduit.

    Operating system for a direct antifreeze cooled fuel cell power plant
    6.
    发明授权
    Operating system for a direct antifreeze cooled fuel cell power plant 失效
    直接防冻冷却燃料电池发电厂的操作系统

    公开(公告)号：US06416891B1

    公开(公告)日：2002-07-09

    申请号：US09443267

    申请日：1999-11-22

    Applicant: David A. Condit ,  Richard D. Breault ,  Leslie L. Van Dine ,  Margaret M. Steinbugler

    Inventor： David A. Condit ,  Richard D. Breault ,  Leslie L. Van Dine ,  Margaret M. Steinbugler

    IPC: H01M802

    CPC classification number: H01M8/04029 ,  H01M8/0612

    Abstract: An operating system for a direct antifreeze cooled fuel cell power plant is disclosed for producing electrical energy from reducing and process oxidant fluid reactant streams. The system includes at least one fuel cell for producing electrical energy from the reducing and oxidant fluid streams; fuel processing components for processing a hydrocarbon fuel into the reducing fluid; a thermal management system that directs flow of a cooling fluid for controlling heat within the plant including a porous water transport plate adjacent and in fluid communication with a cathode catalyst of the fuel cell; a direct antifreeze solution passing through the water transport plate; and, a split oxidant passage that directs the process oxidant stream into and through the fuel cell.

    Abstract translation: 公开了一种用于直接防冻冷却的燃料电池发电厂的操作系统，用于从减少和处理氧化剂流体反应物流中产生电能。 该系统包括用于从还原和氧化剂流体流产生电能的至少一个燃料电池; 用于将烃燃料加工成还原流体的燃料处理部件; 引导冷却流体流动以控制设备内的热量的热管理系统，包括邻近并与燃料电池的阴极催化剂流体连通的多孔水输送板; 通过水输送板的直接防冻溶液; 以及将过程氧化剂流引导并通过燃料电池的分离氧化剂通道。

    Membrane electrode assemblies with hydrogen peroxide decomposition catalyst
    8.
    发明授权
    Membrane electrode assemblies with hydrogen peroxide decomposition catalyst 有权
    膜电极组件用过氧化氢分解催化剂

    公开(公告)号：US07112386B2

    公开(公告)日：2006-09-26

    申请号：US10235074

    申请日：2002-09-04

    Applicant: Ned E. Cipollini ,  David A. Condit ,  Jared B. Hertzberg ,  Thomas D. Jarvi ,  James A. Leistra ,  Michael L. Perry

    Inventor： Ned E. Cipollini ,  David A. Condit ,  Jared B. Hertzberg ,  Thomas D. Jarvi ,  James A. Leistra ,  Michael L. Perry

    IPC: H01M4/90 ,  H01M4/92

    CPC classification number: H01M4/921 ,  H01M4/8605 ,  H01M8/0662 ,  H01M8/1007

    Abstract: A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of the anode, the cathode, a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system.

    Abstract translation: 膜电极组件包括：包含氢氧化催化剂的阳极; 阴极 设置在阳极和阴极之间的膜; 以及位于选自阳极，阴极，阳极和膜之间的层以及阴极和膜之间的层中的至少一个位置的过氧化物分解催化剂，其中过氧化物分解催化剂暴露于阴极和膜之间具有选择性 过氧化氢朝向形成来自过氧化氢的良性产物的反应。 过氧化物分解催化剂也可以位于膜内。 还公开了包括这种膜电极组件的发电燃料电池系统和用于操作这种燃料电池系统的方法。

    Direct antifreeze cooled fuel cell
    9.
    发明授权
    Direct antifreeze cooled fuel cell 有权
    直接防冻冷却燃料电池

    公开(公告)号：US06794073B2

    公开(公告)日：2004-09-21

    申请号：US10037195

    申请日：2001-11-09

    Applicant: Richard D. Breault ,  David A. Condit ,  Albert P. Grasso ,  Michael E. Gorman

    Inventor： Richard D. Breault ,  David A. Condit ,  Albert P. Grasso ,  Michael E. Gorman

    IPC: H01M804

    CPC classification number: H01M8/04134 ,  H01M8/04029 ,  H01M8/04089 ,  H01M8/04126 ,  H01M8/04156 ,  H01M8/04253 ,  H01M2008/1095 ,  H01M2300/0082

    Abstract: A direct antifreeze cooled fuel cell is disclosed for producing electrical energy from reducing and process oxidant fluid streams that includes an electrolyte secured between an anode catalyst and a cathode catalyst; a porous anode substrate secured in direct fluid communication with and supporting the anode catalyst; a porous wetproofed cathode substrate secured in direct fluid communication with and supporting the cathode catalyst; a porous water transport or cooler plate secured in direct fluid communication with the porous cathode substrate; and, a direct antifreeze solution passing through the porous water transport plate. A preferred direct antifreeze solution passing through the porous water transport plate remains essentially within the water transport plate and does not poison the catalysts.

    Abstract translation: 公开了直接防冻冷却的燃料电池，用于通过减少和处理氧化剂流体流产生电能，所述氧化剂流体流包括固定在阳极催化剂和阴极催化剂之间的电解质; 与阳极催化剂直接流体连通并支撑阳极催化剂的多孔阳极基板; 固定成与阴极催化剂直接流体连通并支撑阴极催化剂的多孔耐湿阴极基板; 固定成与多孔阴极基板直接流体连通的多孔水输送或冷却板; 以及通过多孔水输送板的直接防冻溶液。 通过多孔水输送板的优选的直接防冻溶液基本上保持在水输送板内，并且不会使催化剂中毒。

    Shut-down procedure for hydrogen-air fuel cell system
    10.
    发明授权
    Shut-down procedure for hydrogen-air fuel cell system 有权

    公开(公告)号：US06635370B2

    公开(公告)日：2003-10-21

    申请号：US09872957

    申请日：2001-06-01

    Applicant: David A. Condit ,  Richard D. Breault

    Inventor： David A. Condit ,  Richard D. Breault

    IPC: H01M800

    CPC classification number: H01M8/04303 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/04097 ,  H01M8/04223 ,  H01M8/04231 ,  H01M8/241 ,  H01M8/2457

    Abstract: A fuel cell system is shut down by disconnecting the primary load, shutting off the air flow, and controlling the fuel flow into the system (including shutting off the fuel flow) and the gas flow out of the system in a manner that results in the fuel cell gases coming to equilibrium across the cells at a gas composition of at least 0.0001% hydrogen (by volume), and preferably between 1.0% and less than 4.0% hydrogen, by volume, with a balance of nitrogen and possibly other gases inert and harmless to the fuel cell, all the oxygen having been consumed by reacting with the hydrogen within the cell. That gas composition is maintained within the cells throughout shut-down, such as by adding hydrogen to replace any that is consumed by reaction with air leaking into the cells during the period of shut-down. This shut-down procedure causes virtually no cell performance losses.

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