Cascaded fuel cell stacks for fast start-up and anode coking control
    1.
    发明授权
    Cascaded fuel cell stacks for fast start-up and anode coking control 失效
    级联燃料电池堆用于快速启动和阳极焦化控制

    公开(公告)号:US07470477B2

    公开(公告)日:2008-12-30

    申请号:US10640743

    申请日:2003-08-14

    IPC分类号: H01M8/00

    摘要: A solid-oxide fuel cell system having a relatively large primary fuel cell sub-assembly for steady-state operation and a relatively small secondary fuel cell sub-assembly which is rapidly heatable to a threshold operating temperature to a) produce usable power in a short time period, b) cascade a hot exhaust into the primary fuel cell sub-assembly to assist in preheating thereof, and c) provide steam into the primary fuel cell sub-assembly to prevent coking of the anodes thereof. As the primary sub-assembly reaches its threshold temperature, it too begins to generate electricity and continues to self-heat and to be heated by the secondary sub-assembly. Preferably, the secondary sub-assembly continues to provide electricity in complement with the primary sub-assembly until the primary sub-assembly reaches full power, at which time the secondary sub-assembly may be shut down or switched to standby status for fuel efficiency, as desired.

    摘要翻译: 一种固态氧化物燃料电池系统,其具有用于稳态运行的相对较大的一次燃料电池子组件和可快速加热至阈值工作温度的相对较小的二次燃料电池子组件,以便能够在短时间内产生可用功率 时间段,b)将热排气串联到主燃料电池子组件中以辅助其预热,以及c)向主要燃料电池子组件提供蒸汽以防止其阳极焦化。 当初级子组件达到其阈值温度时,它也开始产生电力并继续自热并由次级组件加热。 优选地,辅助子组件继续提供与初级子组件互补的电力,直到初级子组件达到全部功率为止,此时次级组件可被关闭或切换到备用状态以获得燃料效率, 如预期的。

    Cascaded fuel cell stacks for fast start-up and anode coking control
    2.
    发明申请
    Cascaded fuel cell stacks for fast start-up and anode coking control 失效
    级联燃料电池堆用于快速启动和阳极焦化控制

    公开(公告)号:US20050037249A1

    公开(公告)日:2005-02-17

    申请号:US10640743

    申请日:2003-08-14

    摘要: A solid-oxide fuel cell system having a relatively large primary fuel cell sub-assembly for steady-state operation and a relatively small secondary fuel cell sub-assembly which is rapidly heatable to a threshold operating temperature to a) produce usable power in a short time period, b) cascade a hot exhaust into the primary fuel cell sub-assembly to assist in preheating thereof, and c) provide steam into the primary fuel cell sub-assembly to prevent coking of the anodes thereof. As the primary sub-assembly reaches its threshold temperature, it too begins to generate electricity and continues to self-heat and to be heated by the secondary sub-assembly. Preferably, the secondary sub-assembly continues to provide electricity in complement with the primary sub-assembly until the primary sub-assembly reaches full power, at which time the secondary sub-assembly may be shut down or switched to standby status for fuel efficiency, as desired.

    摘要翻译: 一种固态氧化物燃料电池系统,其具有用于稳态运行的相对较大的一次燃料电池子组件和可快速加热至阈值工作温度的相对较小的二次燃料电池子组件,以便能够在短时间内产生可用功率 时间段,b)将热排气串联到主燃料电池子组件中以辅助其预热,以及c)向主要燃料电池子组件提供蒸汽以防止其阳极焦化。 当初级子组件达到其阈值温度时,它也开始产生电力并继续自热并由次级组件加热。 优选地,辅助子组件继续提供与初级子组件互补的电力,直到初级子组件达到全部功率为止,此时次级组件可被关闭或切换到备用状态以获得燃料效率, 如预期的。

    Hybrid interconnect for a solid-oxide fuel cell stack
    5.
    发明授权
    Hybrid interconnect for a solid-oxide fuel cell stack 失效
    用于固体氧化物燃料电池堆的混合互连

    公开(公告)号:US07601450B2

    公开(公告)日:2009-10-13

    申请号:US11087904

    申请日:2005-03-23

    IPC分类号: H01M2/02

    摘要: An electrical interconnect for a fuel cell assembly comprising a peripheral frame formed of one or more materials having a coefficient of thermal expansion similar to that of adjacent elements to which the interconnect must be bonded and a central portion formed of a corrosion-resistant material for conducting electric current between adjacent fuel cells. Preferably, the central portion is attached to the peripheral frame via a brazed corrugated lap joint for relieving thermal expansion differences between the frame and the central portion. Preferably, the joint includes an interlayer of a ductile material, for example, a nickel, copper, silver or gold layer, which helps to relieve thermal stress between the frame and the central portion.

    摘要翻译: 一种用于燃料电池组件的电互连件,包括由一种或多种材料形成的外围框架,所述外围框架的热膨胀系数类似于要连接互连件的相邻元件的热膨胀系数;以及由用于导电的耐腐蚀材料形成的中心部分 相邻燃料电池之间的电流。 优选地,中心部分通过钎焊的波纹搭接接头附接到周边框架,用于减轻框架和中心部分之间的热膨胀差异。 优选地,接头包括延​​性材料的中间层,例如镍,铜,银或金层,其有助于缓解框架和中心部分之间的热应力。

    Solid-oxide fuel cell module for a fuel cell stack
    8.
    发明授权
    Solid-oxide fuel cell module for a fuel cell stack 失效
    用于燃料电池堆的固体氧化物燃料电池模块

    公开(公告)号:US07270906B2

    公开(公告)日:2007-09-18

    申请号:US10178809

    申请日:2002-06-24

    IPC分类号: H01M2/00 H01M2/02 H01M2/14

    摘要: A fuel cell module having four sheet metal parts stamped from flat stock. The parts do not require any forming operations such as folding or dishing. Each part may have a different thickness to suit its function. The first part is a cell mounting frame for receiving and supporting a PEN fuel cell element. The second part is a cathode spacer, the thickness of the spacer determining the height of the cathode air flow field. The third part is an anode spacer, the thickness of spacer determining the height of the anode fuel flow field. The fourth part is a separator plate for separating the anode gas flow in one cell from the cathode air flow in an adjacent cell in a fuel cell stack. The four plates are joined by welding or brazing and may be assembled in any order or combination which suits the assembly process. Any desired number of modules may be stacked together to form a fuel cell stack.

    摘要翻译: 一种燃料电池组件,具有由扁平材料冲压的四个金属片。 这些部件不需要任何成形操作,例如折叠或凹陷。 每个部件可能具有不同的厚度以适应其功能。 第一部分是用于接收和支撑PEN燃料电池元件的电池安装框架。 第二部分是阴极间隔件,间隔物的厚度确定阴极气流场的高度。 第三部分是阳极间隔物,间隔物的厚度决定阳极燃料流场的高度。 第四部分是用于将一个电池中的阳极气体流与燃料电池堆中相邻电池中的阴极空气流分离的隔板。 四个板通过焊接或钎焊连接,并且可以以适合组装过程的任何顺序或组合进行组装。 可以将任何所需数量的模块堆叠在一起以形成燃料电池堆。

    Solid-oxide fuel cell system having an upstream reformate combustor
    10.
    发明申请
    Solid-oxide fuel cell system having an upstream reformate combustor 有权
    具有上游重整燃烧器的固体氧化物燃料电池系统

    公开(公告)号:US20060024541A1

    公开(公告)日:2006-02-02

    申请号:US10909577

    申请日:2004-08-02

    IPC分类号: H01M8/04 H01M8/06 H01M8/12

    摘要: A solid-oxide fuel cell system wherein a reformate combustor is disposed in the reformate flow path between a hydrocarbon reformer and a fuel cell stack. At system start-up, reformate is partially burned within the combustor by admitting combustion air, and the partially-burned reformate is passed through the anode chambers of the stack to warm the anodes. In addition, reformate is passed through a cathode-air heat exchanger to warm combustion air entering the cathode chambers of the stack. The combustor may continue to be supplied with a low level of air during steady-state operation of the SOFC, thereby providing a moist environment within the anode chambers to prevent coking of the anodes and providing additional heat to the reformate. The combustor decouples the reformer from the stack thermodynamically, permitting the reformer and the stack each to run in its own optimal temperature range.

    摘要翻译: 一种固体氧化物燃料电池系统,其中重整燃烧器设置在烃重整器和燃料电池堆之间的重整产品流路中。 在系统启动时,通过加入燃烧空气在燃烧室内部分燃烧重整产物,部分燃烧的重整产物通过堆叠的阳极室,以加热阳极。 此外,重整产物通过阴极 - 空气热交换器以加热进入堆叠的阴极室的燃烧空气。 在SOFC的稳态操作期间,燃烧器可以继续供应低水平的空气,从而在阳极室内提供潮湿环境,以防止阳极焦化并向重整产品提供额外的热量。 燃烧器使热重分离器与热堆动力学解耦,允许重整器和堆叠各自运行在其最佳温度范围内。