Fuel cell stack that utilizes an actuator to switch between interdigitated and straight flow for optimizing performance
    21.
    发明申请
    Fuel cell stack that utilizes an actuator to switch between interdigitated and straight flow for optimizing performance 有权
    燃料电池堆,利用执行器在叉指和直流之间切换,以优化性能

    公开(公告)号:US20070178355A1

    公开(公告)日:2007-08-02

    申请号:US11341285

    申请日:2006-01-27

    IPC分类号: H01M8/24

    摘要: A fuel cell stack that includes an actuating device or devices for selectively providing interdigitated reactant gas flow and straight reactant gas flow through reactant gas flow channels to reduce water accumulation in the diffusing media layers of the stack. In one embodiment, the fuel cell stack employs internal actuators that selectively close the inlet end of every other flow channel and the outlet end of every other opposite flow channel to provide the interdigitated flow. In another embodiment, the interdigitated flow is provided by external actuation where two inlet manifolds and two outlet manifolds are provided. One input manifold is closed to close the input ends of every other flow channel and one outlet manifold is closed to close the output ends of every other opposite flow channel.

    摘要翻译: 一种燃料电池堆,其包括致动装置或用于选择性地提供交错的反应气体流和通过反应气体流动通道的直反应气体流的装置,以减少堆叠的扩散介质层中的积水。 在一个实施例中,燃料电池堆采用内部致动器,其选择性地关闭每隔一个流动通道的入口端和每隔一个相对的流动通道的出口端,以提供叉指流。 在另一个实施例中,通过外部致动提供交错流,其中提供两个入口歧管和两个出口歧管。 一个输入歧管关闭以关闭每个其他流动通道的输入端,一个出口歧管关闭以关闭每隔一个相对流动通道的输出端。

    Proton exchange membrane fuel cell
    22.
    发明申请
    Proton exchange membrane fuel cell 有权
    质子交换膜燃料电池

    公开(公告)号:US20050112449A1

    公开(公告)日:2005-05-26

    申请号:US10720631

    申请日:2003-11-24

    摘要: A fuel cell system with a proton exchange membrane. There is a cathode catalyst layer overlying the first face of the proton exchange membrane, and a cathode diffusion layer overlying the cathode catalyst layer. There is an anode catalyst layer overlying the second face of the proton exchange membrane, and an anode diffusion layer overlying the anode catalyst layer. The cathode diffusion layer has a water vapor permeance of less than about 3×10−4 g/(Pa s m2) at 80° C. and 1 atmosphere. The invention also relates to cathode diffusion layers for fuel cell systems.

    摘要翻译: 具有质子交换膜的燃料电池系统。 存在覆盖在质子交换膜的第一面上的阴极催化剂层和覆盖阴极催化剂层的阴极扩散层。 存在覆盖在质子交换膜的第二面上的阳极催化剂层和覆盖在阳极催化剂层上的阳极扩散层。 在80℃和1个大气压下,阴极扩散层具有小于约3×10 -4 /(Pa·s·2H 2)的水蒸气渗透率。 本发明还涉及用于燃料电池系统的阴极扩散层。

    Insulating layer for a fuel cell assembly
    24.
    发明授权
    Insulating layer for a fuel cell assembly 有权
    用于燃料电池组件的绝缘层

    公开(公告)号:US08206871B2

    公开(公告)日:2012-06-26

    申请号:US12500661

    申请日:2009-07-10

    IPC分类号: H01M8/10 H01M8/04

    CPC分类号: H01M8/0282 H01M2008/1095

    摘要: A fuel cell assembly is disclosed, the fuel cell assembly including a pair of terminal plates, one terminal plate disposed at each end of the fuel cell assembly, a fuel cell disposed between a pair of end fuel cells and the terminal plates, and a thermally insulating, electrically conductive layer formed between the fuel cell and one of the terminal plates adapted to mitigate thermal losses from the end plate, and fluid condensation and ice formation in an end fuel cell. The end fuel cells of the fuel cell assembly have a membrane and/or a cathode having a thickness greater than an average thickness of a membrane and/or a cathode disposed in the fuel cell that may be used in conjunction with, or instead of, the insulating layer to further mitigate thermal losses from the end plate, and fluid condensation and ice formation in the end fuel cells.

    摘要翻译: 公开了一种燃料电池组件,燃料电池组件包括一对端子板,设置在燃料电池组件的每一端的一个端子板,设置在一对端部燃料电池和端子板之间的燃料电池,以及热 在燃料电池和其中一个终端板之间形成的绝缘导电层,适于减轻端板的热损失,以及端部燃料电池中的流体冷凝和冰的形成。 燃料电池组件的末端燃料电池具有膜和/或阴极,其厚度大于设置在燃料电池中的膜和/或阴极的平均厚度,其可以与 绝缘层以进一步减轻端板的热损失,以及端部燃料电池中的流体冷凝和冰的形成。

    Adhoc networking
    25.
    发明授权
    Adhoc networking 失效
    Adhoc网络

    公开(公告)号:US07843862B2

    公开(公告)日:2010-11-30

    申请号:US11804049

    申请日:2007-05-16

    IPC分类号: H04B7/00

    CPC分类号: H04W40/20

    摘要: This invention provides a method of transmitting and receiving packets containing data and positional information for a plurality of devices in a radio frequency network in combination with a global positioning system. The periodic position coordinates of each said device are determined using the global positioning system. The position coordinates are transmitted from each device at staggered points in time that are randomized, and the randomizing operation is performed in discrete steps, wherein the time period of each discrete step is of adequate duration for one device to transmit a positional update. A positional update table and proximity table is created and maintained for each device, and these tables are transmitted to every other device in the network at periodic intervals.

    摘要翻译: 本发明提供了一种在全球定位系统中与无线电频率网络中的多个设备一起发送和接收包含数据和位置信息的分组的方法。 使用全球定位系统确定每个所述设备的周期性位置坐标。 在随机化的交错时间点,从每个设备发送位置坐标,并且以离散步骤执行随机化操作,其中每个离散步长的时间段对于一个设备发送位置更新具有足够的持续时间。 为每个设备创建和维护位置更新表和接近表,并且这些表以周期性间隔被发送到网络中的每个其他设备。

    Proton exchange membrane fuel cell
    26.
    发明授权
    Proton exchange membrane fuel cell 有权
    质子交换膜燃料电池

    公开(公告)号:US07157178B2

    公开(公告)日:2007-01-02

    申请号:US10720631

    申请日:2003-11-24

    IPC分类号: H01M4/94 H01M8/10

    摘要: A fuel cell system with a proton exchange membrane. There is a cathode catalyst layer overlying the first face of the proton exchange membrane, and a cathode diffusion layer overlying the cathode catalyst layer. There is an anode catalyst layer overlying the second face of the proton exchange membrane, and an anode diffusion layer overlying the anode catalyst layer. The cathode diffusion layer has a water vapor permeance of less than about 3×10−4 g/(Pa s m2) at 80° C. and 1 atmosphere. The invention also relates to cathode diffusion layers for fuel cell systems.

    摘要翻译: 具有质子交换膜的燃料电池系统。 存在覆盖在质子交换膜的第一面上的阴极催化剂层和覆盖阴极催化剂层的阴极扩散层。 存在覆盖在质子交换膜的第二面上的阳极催化剂层和覆盖在阳极催化剂层上的阳极扩散层。 在80℃和1个大气压下,阴极扩散层具有小于约3×10 -4 /(Pa·s·2H 2)的水蒸气渗透率。 本发明还涉及用于燃料电池系统的阴极扩散层。

    Diffusion media for use in a PEM fuel cell
    27.
    发明申请
    Diffusion media for use in a PEM fuel cell 有权
    用于PEM燃料电池的扩散介质

    公开(公告)号:US20050042500A1

    公开(公告)日:2005-02-24

    申请号:US10643061

    申请日:2003-08-18

    摘要: A diffusion media is provided for implementation with a PEM fuel cell. The diffusion media is a permeable sheet that is rigid along a transverse axis, flexible along a lateral axis and has a substantially incompressible thickness. The diffusion media is able to be mass produced in large sheets and rolled along the lateral axis for transport and storage. The rigidity of the transverse axis is provided by either inclusion of larger fibers or metallic strips aligned in the transverse direction and prevents tenting of the diffusion media into flow channels of the PEM fuel cell. The diffusion media is water and gas permeable and electrically conductive.

    摘要翻译: 提供扩散介质用于用PEM燃料电池实现。 扩散介质是沿着横向轴线是刚性的可渗透片材,沿着横向轴线是柔性的并且具有基本不可压缩的厚度。 扩散介质能够以大片材大量生产并且沿着横向轴轧制以便运输和储存。 横向轴线的刚性由在横向上排列的较大的纤维或金属带的包含提供,并且防止扩散介质向PEM燃料电池的流动通道中隆起。 扩散介质是水和气体可渗透和导电的。