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    Direct water vaporization for fuel processor startup and transients
    3.
    发明申请
    Direct water vaporization for fuel processor startup and transients 有权

    公开(公告)号：US20060121324A1

    公开(公告)日：2006-06-08

    申请号：US11335003

    申请日：2006-01-19

    申请人： Steven Goebel

    发明人： Steven Goebel

    IPC分类号： H01M8/06 ,  C10J3/46

    CPC分类号： H01M8/0618 ,  B01B1/005 ,  C01B3/382 ,  C01B3/48 ,  C01B2203/0244 ,  C01B2203/0283 ,  C01B2203/044 ,  C01B2203/047 ,  C01B2203/066 ,  C01B2203/0811 ,  C01B2203/0822 ,  C01B2203/0827 ,  C01B2203/0844 ,  C01B2203/1288 ,  C01B2203/142 ,  C01B2203/82 ,  H01M8/0668 ,  Y02P20/128

    摘要： A fuel cell system including a fuel reforming processor having a catalyst therein constructed and arranged to produce a reformate stream including hydrogen and carbon monoxide, a water gas shift reactor downstream of the fuel reforming processor and wherein the water gas shift reactor includes a catalyst therein constructed and arranged to reduce the amount of carbon monoxide in the reformate stream, a preferential oxidation reactor downstream of the water gas shift reactor and wherein the preferential oxidation reactor includes a catalyst therein constructed and arranged to preferentially oxidize carbon monoxide into carbon dioxide and to produce a hydrogen-rich stream, and a fuel cell stack downstream of the preferential oxidation reactor constructed and arranged to produce electricity from the hydrogen-rich stream, a first direct water vaporizing combustor constructed and arranged to combust fuel producing a high-temperature fuel combustion byproducts exhaust and to produce steam from water sprayed into the combustion byproduct exhaust and wherein the first direct water vaporizing combustor is plumbed to the fuel reforming reactor to charge steam therein, and a second direct water vaporizing combustor constructed and arranged to combust fuel to produce a high-temperature fuel combustion byproduct exhaust and to produce steam from water sprayed into the fuel combustion byproduct exhaust and wherein the second direct water vaporizing combustor is plumbed to the water gas shift reactor to charge steam therein.

    Nested bipolar plate for fuel cell and method
    4.
    发明申请
    Nested bipolar plate for fuel cell and method 有权
    用于燃料电池的嵌套双极板和方法

    公开(公告)号：US20050058864A1

    公开(公告)日：2005-03-17

    申请号：US10661195

    申请日：2003-09-12

    申请人： Steven Goebel

    发明人： Steven Goebel

    IPC分类号： H01M8/02 ,  H01M8/04 ,  H01M8/10

    CPC分类号： H01M8/04029 ,  H01M8/0228 ,  H01M8/0254 ,  H01M8/0263 ,  H01M8/0267 ,  H01M8/0297 ,  H01M8/04074 ,  H01M8/1004 ,  H01M8/241 ,  H01M8/2484 ,  Y02P70/56 ,  Y10T83/0304

    摘要： Between adjacent MEA's is a bipolar plate assembly having a first sub-plate with a flow channel which is open to the anode side of the one of the MEA's. A second sub-plate has a flow channel which is open to the cathode side of the adjacent MEA. The sub-plates are nested together to form a coolant flow channel between the sub-plates. The coolant flow path has a height dimension wherein the distance between the adjacent MEA's is substantially unaffected by the height dimension of the coolant flow path. A method of manufacturing a bi-polar plate assembly includes forming a closed coolant flow channel between the sub-plates by nesting the sub-plates together. A method of operating a fuel cell includes passing the coolant through a flow path having a height dimension which is substantially aligned with the height dimension of the hydrogen flow path, the oxygen flow path, or both.

    摘要翻译： 在相邻的MEA之间是具有第一子板的双极板组件，该第一子板具有通向MEA中的一个的阳极侧的流动通道。 第二子板具有通向相邻MEA的阴极侧的流动通道。 子板嵌套在一起以在子板之间形成冷却剂流动通道。 冷却剂流动路径具有高度尺寸，其中相邻MEA之间的距离基本上不受冷却剂流动路径的高度尺寸的影响。 制造双极板组件的方法包括通过将子板嵌套在一起而在子板之间形成封闭的冷却剂流动通道。 操作燃料电池的方法包括使冷却剂通过具有基本上与氢气流路，氧气流路或两者的高度尺寸对准的高度尺寸的流路。

    Fuel cell operation to minimize RH cycles to improve durability
    5.
    发明申请
    Fuel cell operation to minimize RH cycles to improve durability 有权
    燃料电池操作以最小化RH周期以提高耐久性

    公开(公告)号：US20070265802A1

    公开(公告)日：2007-11-15

    申请号：US11434385

    申请日：2006-05-15

    申请人： William Pettit ,  John Fagley ,  John Salvador ,  Steven Goebel

    发明人： William Pettit ,  John Fagley ,  John Salvador ,  Steven Goebel

    IPC分类号： G06F19/00 ,  G06F17/40

    CPC分类号： H01M8/04522 ,  H01M8/04126 ,  H01M8/0432 ,  H01M8/04843 ,  H01M2008/1095

    摘要： A fuel cell system that includes an over-arching algorithm for providing a strategy that reduces relative humidity cycling of the cathode outlet gas between wet and dry operation to extend the useful life of the membrane. The algorithm receives sensor signals indicative of operating parameters of the fuel cell system. The algorithm maintains a cathode exhaust gas relative humidity in a wet operating mode if the operating parameters of the fuel cell system are able to sustain the cathode gas relative humidity above a first predetermined value, and maintains the cathode exhaust gas relative humidity in a dry operating mode if the operating parameters of the fuel cell system are able to sustain the cathode gas relative humidity below a second predetermined value.

    摘要翻译： 一种燃料电池系统，其包括用于提供在湿和干运行之间减少阴极出口气体的相对湿度循环以延长膜的使用寿命的策略的叠加算法。 该算法接收指示燃料电池系统的操作参数的传感器信号。 如果燃料电池系统的操作参数能够将阴极气体的相对湿度维持在高于第一预定值的情况下，该算法在湿式操作模式中保持阴极排气相对湿度，并且将阴极废气相对湿度保持在干燥操作 如果燃料电池系统的操作参数能够将阴极气体相对湿度维持在低于第二预定值的情况下。

    Fuel cell system water mass balancing scheme
    8.
    发明申请
    Fuel cell system water mass balancing scheme 审中-公开
    燃料电池系统水质量平衡方案

    公开(公告)号：US20070077474A1

    公开(公告)日：2007-04-05

    申请号：US11242734

    申请日：2005-10-04

    申请人： Steven Goebel

    发明人： Steven Goebel

    IPC分类号： H01M8/04 ,  H01M8/02

    CPC分类号： H01M8/04029 ,  H01M8/04126 ,  H01M8/04156

    摘要： A fuel cell system and a scheme for its operation are provided for improving overall water mass balance within the system. In accordance with one embodiment of the present invention, an electrochemical conversion assembly is provided where the coolant flowfield portion defines an operating coolant temperature profile characterized by areas of relatively low coolant temperature TMIN and areas of relatively high coolant temperature TMAX. The cathode flowfield portion and the coolant flowfield portion are configured such that the reactant input and the reactant output are positioned closer to the areas of relatively low coolant temperature TMIN than the areas of relatively high coolant temperature TMAX. In accordance with another embodiment of the present invention, the cathode flowfield portion and the coolant flowfield portion are configured such that the areas of relatively low coolant temperature TMIN are positioned in closer thermal communication with the reactant input and the reactant output than are the areas of relatively high coolant temperature TMAX.

    摘要翻译： 提供燃料电池系统及其操作方案，用于改善系统内的总体水质平衡。 根据本发明的一个实施例，提供一种电化学转换组件，其中冷却剂流场部分限定了以相对低的冷却剂温度T MIN MIN区域和相对高的冷却剂的区域为特征的操作冷却剂温度分布 温度T最大值。 阴极流场部分和冷却剂流场部分被配置成使得反应物输入和反应物输出被定位成比冷却剂温度相对较高的区域T'更靠近相对较低的冷却剂温度T MINI的区域， SUB> MAX 。 根据本发明的另一个实施例，阴极流场部分和冷却剂流场部分被构造成使得相对低的冷却剂温度T MIN MIN的区域定位成与反应物输入端更加热连通， 反应物输出比相对高的冷却剂温度T MAX MAX的区域。

    Fuel cell shutdown and startup using a cathode recycle loop
    9.
    发明申请
    Fuel cell shutdown and startup using a cathode recycle loop 有权

    公开(公告)号：US20050058859A1

    公开(公告)日：2005-03-17

    申请号：US10664329

    申请日：2003-09-17

    申请人： Steven Goebel

    发明人： Steven Goebel

    IPC分类号： H01M8/00 ,  H01M8/02 ,  H01M8/04 ,  H01M8/10

    CPC分类号： H01M8/04231 ,  H01M8/04014 ,  H01M8/04097

    摘要： A method and device for operating a fuel cell system. A recirculation loop coupled to a fuel cell cathode ensures that fluids passing through the cathode are recycled, thereby enabling reaction between residual oxygen in the recycled fluid and fuel that has been introduced into the recirculation loop until substantially all of the oxygen is reacted, leaving a substantially oxygen-free, predominantly nitrogen compound in the cathode and related flowpath. Thereafter, this compound can be redirected to purge the remaining residual hydrogen resident in the fuel cell's anode and related flowpath. While the present invention is usable during any period of system operation, it is especially valuable for operational conditions associated with starting up and shutting down a fuel cell system to inhibit the formation of high voltage potentials that could otherwise damage fuel cell catalysts or catalysts supports.

    Relative humidity control for a fuel cell
    10.
    发明申请
    Relative humidity control for a fuel cell 有权
    燃料电池的相对湿度控制

    公开(公告)号：US20060263654A1

    公开(公告)日：2006-11-23

    申请号：US11130825

    申请日：2005-05-17

    申请人： Steven Goebel ,  William Pettit ,  John Fagley ,  Lee Whitehead

    发明人： Steven Goebel ,  William Pettit ,  John Fagley ,  Lee Whitehead

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04119 ,  H01M8/04253 ,  H01M2008/1095

    摘要： A model uses various operating characteristics of a fuel cell to predict the relative humidity profile that is occurring within the fuel cell as a function of the reaction progress. The model is used to predict the relative humidity profile that will occur in response to changes to one or more of the operating characteristics of the fuel cell. A high frequency resistance of the fuel cell can also be used as a measure that is indicative of the humidity within the fuel cell. The model and/or the high frequency resistance can be used in a closed-loop feedback system to control the operation of the fuel cell to maintain the humidification of the MEA and fuel cells within a desired range to achieve a desired fuel cell performance.

    摘要翻译： 模型使用燃料电池的各种操作特性来预测在燃料电池内发生的相对湿度分布作为反应进程的函数。 该模型用于预测响应于燃料电池的一个或多个操作特性的变化而发生的相对湿度分布。 燃料电池的高频电阻也可以用作指示燃料电池内的湿度的措施。 该模型和/或高频阻抗可以用在闭环反馈系统中以控制燃料电池的操作，以将MEA和燃料电池的加湿保持在期望的范围内，以实现期望的燃料电池性能。