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    Fuel cell having interdigitated flow channels and water transport plates
    3.
    发明授权
    Fuel cell having interdigitated flow channels and water transport plates 有权
    燃料电池具有交错的流动通道和水输送板

    公开(公告)号：US06780533B2

    公开(公告)日：2004-08-24

    申请号：US09733133

    申请日：2000-12-08

    申请人： Jung S. Yi ,  Jonathan Puhalski

    发明人： Jung S. Yi ,  Jonathan Puhalski

    IPC分类号： H01M804

    CPC分类号： H01M8/04089 ,  H01M8/04097 ,  H01M8/04156 ,  H01M8/04291 ,  H01M8/1007

    摘要： A fuel cell power plant includes a fuel cell having a membrane electrode assembly (MEA), which is disposed between anode and cathode support plates. Porous water transport plates or the support plates have interdigitated flow channels for the reactant gas streams to pass through and conventional flow channels for coolant streams to pass through. The pressure of the reactant gas streams is greater than the coolant stream which, within the porous water transport plates allows the coolant water to saturate the water transport plates thereby forcing the reactant gases into the anode and cathode support plates. This, in turn, increases the mass transfer of such gases into the support plates, thereby increasing the electrical performance of the fuel cell. Current densities of about 1.6 amps per square centimeter are achieved with air stochiometries of not over 2.50.

    摘要翻译： 燃料电池发电厂包括具有设置在阳极和阴极支撑板之间的膜电极组件（MEA）的燃料电池。 多孔水输送板或支撑板具有交错的流动通道，用于使反应物气流通过，以及用于冷却剂流通过的常规流动通道。 反应物气体流的压力大于冷却剂流，其在多孔水传输板内允许冷却水使水输送板饱和，从而迫使反应气体进入阳极和阴极支撑板。 这又增加了这种气体向支撑板的传质，从而提高了燃料电池的电气性能。 电流密度约为1.6安培/平方厘米，空气量计不超过2.50。

    Variable stochiometry fuel cell
    4.
    发明授权
    Variable stochiometry fuel cell 有权
    变量燃烧电池

    公开(公告)号：US06586123B1

    公开(公告)日：2003-07-01

    申请号：US09778513

    申请日：2001-02-07

    申请人： Jung S. Yi ,  Jonathan Puhalski

    发明人： Jung S. Yi ,  Jonathan Puhalski

    IPC分类号： H01M800

    CPC分类号： H01M8/04089

    摘要： A fuel cell having a polymer electrolyte membrane (16) between anode (14) and cathode (18) reactant flow fields includes a variable blower (32), the power control signal (61) of which is provided by a controller (75) in response to a current signal (63) indicative of the current of the load (71) sensed by a current detector (68). The controller responds to a schedule of blower power as a function of load current density to provide a stochiometry, S, which is fixed at a stochiometry of A, plus or minus a range of stochiometries, D, below a certain current density, C, and varies with higher current densities as: S=[A+B(i−C)]±D, where B is he slope of stochiometry as a function of current density, and i is the actual current density.

    摘要翻译： 具有在阳极（14）和阴极（18）之间的反应物流场的聚合物电解质膜（16）的燃料电池包括可变鼓风机（32），其功率控制信号（61）由控制器（75）提供 响应于指示由电流检测器（68）感测的负载（71）的电流的电流信号（63）。 控制器作为负载电流密度的函数响应鼓风机功率的时间表，以提供固定在A的化学计量学上的加热或低于一定电流密度D的范围内的D， 并随着较高的电流密度变化，如：S = [A + B（iC）]±D，其中B是作为电流密度的函数的理论计算的斜率，i是实际的电流密度。

    Fuel cell with passive water balance
    5.
    发明授权
    Fuel cell with passive water balance 有权
    燃料电池与被动水平衡

    公开(公告)号：US07201992B2

    公开(公告)日：2007-04-10

    申请号：US10750609

    申请日：2003-12-31

    申请人： Deliang Yang ,  Jung S. Yi

    发明人： Deliang Yang ,  Jung S. Yi

    IPC分类号： H01M2/14

    CPC分类号： H01M8/0258 ,  H01M8/026 ,  H01M8/04029 ,  H01M8/04291 ,  H01M8/1007

    摘要： A fuel cell includes a membrane electrode assembly (46) having a first reactant flow field (80) secured adjacent a first or second surface (48, 50) of the assembly (46) for directing flow of a first reactant adjacent the first or second surface of the assembly (46). The first reactant flow field (80) defines a plurality of two-pass circuits (82, 84, 86, 88), and each two-pass circuit (82) is in fluid communication with both a first reactant inlet (90) for directing the first reactant into the fuel cell (12), and with a first reactant outlet (92) for directing the first reactant out of the fuel cell (12). The plurality of two-pass circuits (82) facilitate water movement (112) toward the reactant inlet (90) to aid in passive maintenance of fuel cell (12) water balance.

    摘要翻译： 燃料电池包括具有邻近组件（46）的第一或第二表面（48,50）固定的第一反应物流场（80）的膜电极组件（46），用于引导邻近第一或第二 组件（46）的表面。 第一反应物流场（80）限定多个双通道电路（82,84,86,88），并且每个双通电路（82）与第一反应物入口（90）流体连通，用于引导 第一反应物进入燃料电池（12），以及用于将第一反应物引导出燃料电池（12）的第一反应物出口（92）。 多个双程循环（82）有助于朝向反应物入口（90）的水移动（112），以帮助被动维护燃料电池（12）的水平衡。

    Bi-zone water transport plate for a fuel cell
    6.
    发明授权
    Bi-zone water transport plate for a fuel cell 有权
    用于燃料电池的双区水输送板

    公开(公告)号：US06617068B2

    公开(公告)日：2003-09-09

    申请号：US09940198

    申请日：2001-08-27

    申请人： Brian F. Dufner ,  Michael L. Perry ,  John C. Trocciola ,  Deliang Yang ,  Jung S. Yi

    发明人： Brian F. Dufner ,  Michael L. Perry ,  John C. Trocciola ,  Deliang Yang ,  Jung S. Yi

    IPC分类号： H01M202

    CPC分类号： H01M8/086 ,  H01M8/0221 ,  H01M8/0228 ,  H01M8/0239 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/0276 ,  H01M8/0297 ,  H01M8/04126 ,  H01M8/241

    摘要： The invention is a bi-zone water transport plate for a fuel cell wherein the plate includes a water permeability zone and a bubble barrier zone. The bubble barrier zone extends between all reactive perimeters of the plate, has a pore size of less than 20 microns, and has a thickness of less than 25 percent of a shortest distance between opposed contact surfaces of the plate. The water permeability zone has a pore size of at least 100 percent greater than the pore size of the bubble barrier zone, and has a thickness of greater than 75 percent of the shortest distance between the opposed contact surfaces of the plate. By having a separate bubble barrier zone, the plate affords enhanced water permeability while the bubble barrier maintains a gas seal.

    摘要翻译： 本发明是用于燃料电池的双区水输送板，其中板包括透水区和气泡阻挡区。 气泡阻挡区在板的所有反应性周长之间延伸，孔径小于20微米，并且具有小于板的相对接触表面之间最短距离的25％的厚度。 透水性区域的孔径比气泡阻挡区域的孔径大至少100％，并且具有大于板的相对的接触表面之间最短距离的75％的厚度。 通过具有单独的气泡阻挡区，当气泡阻挡层保持气体密封时，板提供增强的透水性。

    Method and apparatus for regenerating the performance of a PEM fuel cell
    7.
    发明授权
    Method and apparatus for regenerating the performance of a PEM fuel cell 有权
    用于再生PEM燃料电池性能的方法和装置

    公开(公告)号：US06399231B1

    公开(公告)日：2002-06-04

    申请号：US09602361

    申请日：2000-06-22

    申请人： John Donahue ,  Thomas F. Fuller ,  Deliang Yang ,  Jung S. Yi

    发明人： John Donahue ,  Thomas F. Fuller ,  Deliang Yang ,  Jung S. Yi

    IPC分类号： H01M804

    CPC分类号： H01M16/006 ,  H01M8/04238 ,  H01M8/04753 ,  H01M8/0488 ,  H01M8/0491 ,  H01M2008/1095

    摘要： PEM fuel cell performance losses caused by phenomena occurring during normal cell operation are recovered by periodically reducing the cathode potential to about 0.6 volts or less, and preferably to 0.1 volt or less. Once the cathode potential is reduced to the desired low level, it is maintained at or below that level for a period of time. The lower the potential to which the cathode is brought, the more quickly regeneration will occur. After regeneration, the cell, when returned to normal operation, will operate at a higher performance level.

    摘要翻译： 通过将阴极电位周期性地降低到约0.6伏特或更小，优选为0.1伏或更小，来恢复在正常电池操作期间发生的现象引起的PEM燃料电池性能损失。 一旦阴极电位降低到所需的低电平，就将其保持在或低于该电平一段时间。 阴极的电位越低，再生就越快。 再生后，电池在恢复正常运行时将以更高的性能水平运行。

    Cathode-to-cathode fuel cell stacks
    8.
    发明授权
    Cathode-to-cathode fuel cell stacks 有权
    阴极 - 阴极燃料电池堆

    公开(公告)号：US07081313B2

    公开(公告)日：2006-07-25

    申请号：US10950714

    申请日：2004-09-27

    申请人： Gennady Resnick ,  Jung S. Yi ,  Tadahiko Taniguchi ,  Akira Maekawa

    发明人： Gennady Resnick ,  Jung S. Yi ,  Tadahiko Taniguchi ,  Akira Maekawa

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04253 ,  H01M8/04007 ,  H01M8/249

    摘要： A plurality of fuel cell stacks (8, 8a, 9, 9a) have their cathode ends (11, 12) contiguous with either a common current collector (15a–15d) or respective current collectors (15a, 15b) which may be separated by electrical isolation (27a, 27b). The cathode-to-cathode relationship protects the cathode of each of the stacks from cold ambient environments, thereby permitting improved cold starts and mitigation of performance loss as a result of cold starts as well as freeze/thaw cycles. Heaters (30, 30a–30d) may be provided in current collectors, or in or between electrical isolation. Four stacks may share one current collector, or each may have its own current collector.

    摘要翻译： 多个燃料电池堆（8,8a，9,9a）的阴极端（11,12）与公共集电器（15a-15d）或各自的集电器（15a，15b）相连接 ），其可以通过电隔离（27a，27b）分离。 阴极到阴极的关系保护了每个堆叠的阴极与冷的环境环境，从而允许由于冷启动以及冷冻/融化循环而导致的冷启动和降低性能损失。 加热器（30,30和-30d）可以在集电器中提供，或在电隔离之间或之间提供。 四个堆叠可以共享一个集电器，或者每个可以具有其自己的集电器。

    Passive water management fuel cell
    9.
    发明授权
    Passive water management fuel cell 有权
    被动水管理燃料电池

    公开(公告)号：US06794077B2

    公开(公告)日：2004-09-21

    申请号：US10036181

    申请日：2001-12-28

    申请人： Jung S. Yi ,  Deliang Yang ,  Richard D. Breault ,  Albert P. Grasso ,  Glenn W. Scheffler

    发明人： Jung S. Yi ,  Deliang Yang ,  Richard D. Breault ,  Albert P. Grasso ,  Glenn W. Scheffler

    IPC分类号： H01M202

    CPC分类号： H01M8/04291 ,  H01M8/0247 ,  H01M8/0267 ,  H01M8/04104 ,  H01M8/04134 ,  H01M8/241 ,  H01M8/2457 ,  H01M8/2484

    摘要： A proton exchange membrane (PEM) fuel cell includes fuel and oxidant flow field plates (26, 40) having fuel and oxidant channels (27, 28; 41, 44), and water channels, the ends (29, 48) of which that are adjacent to the corresponding reactant gas inlet manifold (34, 42) are dead ended, the other ends (31, 50) draining excess water into the corresponding reactant gas exhaust manifold (36, 45). Flow restrictors (39, 47) maintain reactant gas pressure above exit manifold pressure, and may comprise interdigitated channels (65, 66; 76, 78). Solid reactant gas flow field plates have small holes (85, 88) between reactant gas channels (27, 28; 41) and water drain channels (29, 30; 49, 50). In one embodiment, the fuel cells of a stack may be separated by either coolant plates (51) or solid plates (55) or both. In a second embodiment, coolant plates (51a) have weep holes (57) that inject water into the ends (29) of the reactant gas water channels which are in the region of the inlet manifold (34), thereby assuring humidification of the reactants.

    摘要翻译： 质子交换膜（PEM）燃料电池包括具有燃料和氧化剂通道（27,28,41,44）和水通道的燃料和氧化剂流场板（26,40），其中所述端部（29,48） 邻近相应的反应气体入口歧管（34,42）是死端的，另一端（31,50）将多余的水排放到相应的反应气体排气歧管（36,45）中。 流量限制器（39,47）将反应气体压力保持在出口歧管压力以上，并且可以包括交错的通道（65,66; 76,78）。 固体反应物气体流场板在反应气体通道（27,28; 41）和排水通道（29,30; 49,50）之间具有小孔（85,88）。 在一个实施例中，堆叠的燃料电池可以由冷却板（51）或固体板（55）或两者分开。 在第二实施例中，冷却剂板（51a）具有将水注入位于入口歧管（34）的区域中的反应物气体水通道的端部（29）的排水孔（57），从而确保反应物的加湿 。