Method to maximize fuel cell stack shorting resistance
    51.
    发明授权
    Method to maximize fuel cell stack shorting resistance 有权
    最大化燃料电池堆短路电阻的方法

    公开(公告)号:US07709120B2

    公开(公告)日:2010-05-04

    申请号:US11769754

    申请日:2007-06-28

    IPC分类号: H01M8/04

    CPC分类号: H01M8/248 H01M2008/1095

    摘要: A method of producing a fuel cell stack is disclosed, the method including the steps of compressing the fuel cell stack at a first pressure and compressing the fuel cell stack at a second pressure higher than the first pressure, wherein a shorting resistance of fuel cells in the fuel cell stack is maximized and a durability of the fuel cell stack is maximized.

    摘要翻译: 公开了一种生产燃料电池堆的方法,所述方法包括以第一压力压缩燃料电池堆并在高于第一压力的第二压力下压缩燃料电池堆的步骤,其中燃料电池堆的短路阻力 燃料电池堆最大化,并且燃料电池堆的耐久性最大化。

    Soft start fuel cell control strategy
    52.
    发明授权
    Soft start fuel cell control strategy 有权
    软启动燃料电池控制策略

    公开(公告)号:US07687163B2

    公开(公告)日:2010-03-30

    申请号:US11695270

    申请日:2007-04-02

    IPC分类号: H01M8/04

    摘要: A method of operating an electrochemical conversion assembly is provided. According to the method, an assembly warm-up operation is executed by increasing the temperature TSTACK of the membrane electrode assembly. Next, stoichiometry-based control of the relative humidity (RH) of one of the reactant flowfields is initiated when the temperature TSTACK exceeds a threshold temperature T0. The stoichiometry-based RH control comprises a reduction in the relative humidity from a value RHWET exceeding 100% relative humidity to a value RHDRY less than 100% relative humidity. The relative humidity value RHDRY is sufficiently low to permit reduction of an initial membrane hydration λWET in the membrane electrode assembly. The reduction in the relative humidity to RHDRY is achieved by controlling the stoichiometry of the reactant flowfield and the temperature of the membrane electrode assembly such that the reduction to RHDRY decreases substantially continuously, relative to portions of the RH profile of the reactant flowfield prior to initiation of the stoichiometry-based control. The cell transitions from the stoichiometry-based RH control to generally elevated-temperature, temperature-based RH control when membrane hydration in the membrane electrode assembly falls below a target membrane hydration value λDRY. Additional methods and corresponding systems are contemplated.

    摘要翻译: 提供了一种操作电化学转化组件的方法。 根据该方法,通过增加膜电极组件的温度TSTACK来执行组装预热操作。 接下来,当温度TSTACK超过阈值温度T0时,开始对反应物流场之一的相对湿度(RH)的基于化学计量的控制。 基于化学计量的RH控制包括相对湿度从超过100%相对湿度的值RHWET降低到小于100%相对湿度的值RHDRY。 相对湿度值RHDRY足够低以允许减少膜电极组件中的初始膜水合作用λWET。 相对于RHDRY的相对湿度的降低通过控制反应物流场的化学计量和膜电极组件的温度来实现,使得相对于起始之前的反应物流场的RH分布的部分,RHDRY的减少基本上连续地减小 的基于化学计量的控制。 当膜电极组件中的膜水合降低到目标膜水合值λDRY以下时,细胞从基于化学计量的RH控制转变为通常高温,基于温度的RH控制。 考虑附加的方法和相应的系统。

    STRUCTURAL REINFORCEMENT OF MEMBRANE ELECTRODES
    53.
    发明申请
    STRUCTURAL REINFORCEMENT OF MEMBRANE ELECTRODES 有权
    膜电极结构强化

    公开(公告)号:US20100009240A1

    公开(公告)日:2010-01-14

    申请号:US12170706

    申请日:2008-07-10

    IPC分类号: H01M4/88 H01M4/06 B01J21/18

    摘要: A catalyst ink composition for a fuel cell electrode is provided. The catalyst ink composition includes a plurality of electrically conductive support particles; a catalyst formed from a finely divided precious metal, the catalyst supported by the conductive support particles; an ionomer; at least one solvent; and a reinforcing material configured to bridge and distribute stresses across the electrically conductive support particles of the ink composition upon a drying thereof. An electrode for a fuel cell and a method of fabricating the electrode with the catalyst ink composition are also provided.

    摘要翻译: 提供了一种用于燃料电池电极的催化剂油墨组合物。 催化剂油墨组合物包括多个导电载体颗粒; 由细碎的贵金属形成的催化剂,由导电载体颗粒负载的催化剂; 离聚物; 至少一种溶剂; 以及加强材料,其构造成在其干燥时桥接并分布贯穿墨水组合物的导电支撑颗粒的应力。 还提供了一种用于燃料电池的电极和使用催化剂油墨组合物制造电极的方法。

    Flexible bipolar plate
    54.
    发明授权
    Flexible bipolar plate 有权
    柔性双极板

    公开(公告)号:US07419739B2

    公开(公告)日:2008-09-02

    申请号:US10925753

    申请日:2004-08-25

    申请人: Yeh-Hung Lai

    发明人: Yeh-Hung Lai

    IPC分类号: H01M8/02 H01M4/94

    摘要: The present invention provides for a construction for a bipolar plate for a fuel cell stack that enables the bipolar plate to be a more compliant member in the fuel cell stack. The bipolar plate can be configured to provide varying levels of compliance, as demanded by the design of the fuel cell stack. The bipolar plate can be more compliant than the diffusion media members and the active elements used to form the individual fuel cells. The compliant nature of the individual bipolar plates enables localized dimensional changes that occur within the fuel cell stack to be compensated by a localized deformation of the portions of the bipolar plate within that region. The bipolar plate has an internal coolant flow field where some opposing pairs of lands are spaced apart with a gap therebetween while other opposing pairs of lands are in contact with one another.

    摘要翻译: 本发明提供了一种用于燃料电池堆的双极板的结构,其使得双极板能够在燃料电池堆中成为更顺从的构件。 双极板可以被配置为提供不同程度的顺应性,如燃料电池堆的设计所要求的。 双极板可以比用于形成单个燃料电池的扩散介质构件和活性元件更柔顺。 各个双极板的顺应性使得在燃料电池堆内发生的局部尺寸变化能够被该区域内的双极板的部分的局部变形所补偿。 双极板具有内部冷却剂流动场,其中一些相对的焊盘对间隔开,而其它相对的焊盘对彼此接触。

    Fuel cell side plates with controlled tensile compliance
    56.
    发明申请
    Fuel cell side plates with controlled tensile compliance 审中-公开
    具有受控拉伸顺应性的燃料电池侧板

    公开(公告)号:US20060040166A1

    公开(公告)日:2006-02-23

    申请号:US10920657

    申请日:2004-08-18

    IPC分类号: H01M8/02 H01M8/10

    摘要: A device configured to convert a hydrogenous fuel source to electrical energy is provided, the device comprising an electrochemical conversion assembly compressively loaded along a loading axis of the conversion assembly and at least one side plate. The side plate includes a proximal end, a distal end, and at least one spring element positioned between the proximal end and the distal end. The spring element is configured to maintain the compressive loading along the loading axis of the electrochemical conversion assembly. The device can further comprise a fuel cell, and the device can further comprises structure defining a vehicle powered by the fuel cell.

    摘要翻译: 提供了一种被配置为将氢燃料源转换为电能的装置,该装置包括沿转换组件的负载轴和至少一个侧板压缩加载的电化学转化组件。 侧板包括近端,远端以及定位在近端和远端之间的至少一个弹簧元件。 弹簧元件构造成沿着电化学转化组件的负载轴线保持压缩载荷。 该装置还可以包括燃料电池,并且该装置还可以包括限定由燃料电池供电的车辆的结构。

    Layered radiation-sensitive materials with varying sensitivity
    58.
    发明授权
    Layered radiation-sensitive materials with varying sensitivity 有权
    具有不同灵敏度的分层辐射敏感材料

    公开(公告)号:US09405192B2

    公开(公告)日:2016-08-02

    申请号:US13088792

    申请日:2011-04-18

    IPC分类号: G03C5/04 G03F7/095 G03F7/20

    CPC分类号: G03F7/095 G03F7/2022

    摘要: A method for fabricating a radiation-cured structure is provided. The method includes the steps of providing a first radiation-sensitive material and a second radiation-sensitive material adjacent the first radiation-sensitive material. The first radiation-sensitive material has a first sensitivity. The second radiation-sensitive material has the first sensitivity and a second sensitivity different from the first sensitivity. At least one mask is placed between at least one radiation source and the first and second radiation-sensitive materials. The mask has a plurality of substantially radiation-transparent apertures. The first and second radiation-sensitive materials are then exposed to a plurality of radiation beams through the radiation-transparent apertures in the mask to form a first construct in the first radiation-sensitive material and a second construct in the second radiation-sensitive material. The first construct and the second construct cooperate to form the radiation-cured structure.

    摘要翻译: 提供了一种制造辐射固化结构的方法。 该方法包括提供与第一辐射敏感材料相邻的第一辐射敏感材料和第二辐射敏感材料的步骤。 第一种辐射敏感材料具有第一敏感性。 第二辐射敏感材料具有与第一灵敏度不同的第一灵敏度和第二灵敏度。 至少一个掩模被放置在至少一个辐射源与第一和第二辐射敏感材料之间。 掩模具有多个基本上辐射透明的孔。 然后将第一和第二辐射敏感材料暴露于通过掩模中的辐射透明孔的多个辐射束,以在第一辐射敏感材料中形成第一构造体,并在第二辐射敏感材料中形成第二构造体。 第一构造和第二构造协作形成辐射固化结构。

    Structural reinforcement of membrane electrodes
    59.
    发明授权
    Structural reinforcement of membrane electrodes 有权
    膜电极结构增强

    公开(公告)号:US08658331B2

    公开(公告)日:2014-02-25

    申请号:US12912838

    申请日:2010-10-27

    IPC分类号: H01M4/02 H01M8/02 B01J23/00

    摘要: A catalyst ink composition for a fuel cell electrode is provided. The catalyst ink composition includes a plurality of electrically conductive support particles; a catalyst formed from a finely divided precious metal, the catalyst supported by the conductive support particles; an ionomer; at least one solvent; and a reinforcing material configured to bridge and distribute stresses across the electrically conductive support particles of the ink composition upon a drying thereof. An electrode for a fuel cell and a method of fabricating the electrode with the catalyst ink composition are also provided.

    摘要翻译: 提供了一种用于燃料电池电极的催化剂油墨组合物。 催化剂油墨组合物包括多个导电载体颗粒; 由细碎的贵金属形成的催化剂,由导电载体颗粒负载的催化剂; 离聚物; 至少一种溶剂; 以及加强材料,其构造成在其干燥时桥接并分布贯穿墨水组合物的导电支撑颗粒的应力。 还提供了一种用于燃料电池的电极和使用催化剂油墨组合物制造电极的方法。

    Fuel cell with microtruss water vapor transport device
    60.
    发明授权
    Fuel cell with microtruss water vapor transport device 有权
    燃料电池与微型桁架水蒸汽输送装置

    公开(公告)号:US08329347B2

    公开(公告)日:2012-12-11

    申请号:US12701892

    申请日:2010-02-08

    IPC分类号: H01M8/04 B01D47/00 G11B7/0045

    摘要: A fuel cell system includes a water vapor transport device having a wet flow field layer having a coarse microtruss structure disposed between a pair of fine microtruss structures. The coarse and fine microtruss structures of the wet flow field layer are formed from a radiation-sensitive material. A dry flow field layer has a coarse microtruss structure disposed between a pair of fine microtruss structures. The coarse and fine microtruss structures of the dry flow field layer are also formed from a radiation-sensitive material. A membrane is disposed between the wet flow field layer and the dry flow field layer and adapted to permit a transfer of water vapor therethrough from the wet fluid to the dry fluid to form a humidified fluid.

    摘要翻译: 燃料电池系统包括具有设置在一对精细微型桁架结构之间的具有粗糙桁架结构的湿流场层的水蒸气输送装置。 湿流场层的粗微细桁架结构由辐射敏感材料形成。 干流场层具有设置在一对精细微型桁架结构之间的粗略桁架结构。 干流场层的粗和微微桁架结构也由辐射敏感材料形成。 膜布置在湿流场层和干流场层之间,并且适于允许水蒸汽从湿流体传递到干流体以形成加湿流体。