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    Technique and apparatus to regulate a reactant stoichiometric ratio of a fuel cell system
    7.
    发明申请
    Technique and apparatus to regulate a reactant stoichiometric ratio of a fuel cell system 审中-公开
    调节燃料电池系统的反应物化学计量比的技术和装置

    公开(公告)号：US20080152964A1

    公开(公告)日：2008-06-26

    申请号：US11645153

    申请日：2006-12-22

    申请人： Jing Ou ,  Zhi Zhou ,  Dustan L. Skidmore ,  John W. Parks

    发明人： Jing Ou ,  Zhi Zhou ,  Dustan L. Skidmore ,  John W. Parks

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04089 ,  H01M8/04201 ,  H01M8/04373 ,  H01M8/04552 ,  H01M8/04559 ,  H01M8/04619 ,  H01M8/04626 ,  H01M8/04738 ,  H01M8/04753 ,  H01M8/04798 ,  H01M8/0618

    摘要： A technique that is useable with a fuel cell system includes adjusting operating parameters of a fuel cell system to obtain an optimal reactant stoichiometric ratio and thereby maximize the operating efficiency and/or performance of the system. An initial starting point for the reactant stoichiometric ratio is determined based on the output power provided by a fuel cell stack. Thereafter, the optimal reactant stoichiometric ratio is obtained by adjusting the reactant stoichiometric ratio based upon the observed system operating parameters and their response to the adjustment. In this manner, an optimal reactant stoichiometric ratio is reached and maintained while the fuel cell system is in operation, thus, maximizing the system's efficiency and performance.

    摘要翻译： 可用于燃料电池系统的技术包括调整燃料电池系统的操作参数以获得最佳反应物化学计量比，从而最大化系统的运行效率和/或性能。 基于由燃料电池堆提供的输出功率确定反应物化学计量比的初始起始点。 此后，通过基于观察到的系统操作参数及其对调整的响应来调节反应物化学计量比来获得最佳反应物化学计量比。 以这种方式，在燃料电池系统运行时达到和保持最佳的反应物化学计量比，从而使系统的效率和性能最大化。

    Technique and apparatus to determine an initial reactant stoichiometric ratio for a fuel cell system
    8.
    发明申请
    Technique and apparatus to determine an initial reactant stoichiometric ratio for a fuel cell system 审中-公开
    确定燃料电池系统的初始反应物化学计量比的技术和装置

    公开(公告)号：US20080152965A1

    公开(公告)日：2008-06-26

    申请号：US11645240

    申请日：2006-12-22

    申请人： Jing Ou ,  Zhi Zhou ,  John W. Parks ,  Dustan L. Skidmore

    发明人： Jing Ou ,  Zhi Zhou ,  John W. Parks ,  Dustan L. Skidmore

    IPC分类号： H01M8/04 ,  H01M8/02

    CPC分类号： H01M8/04201 ,  H01M8/04089 ,  H01M8/0432 ,  H01M8/04552 ,  H01M8/04619 ,  H01M8/04626 ,  H01M8/04708 ,  H01M8/04753 ,  H01M8/0618

    摘要： A technique that is usable with a fuel cell system that provides power to a load and is directed toward learning an optimal reactant stoichiometric ratio(s) for starting up the fuel cell system. In accordance with the technique, data representative of a plurality of reactant flows, each of which corresponds to an output power level provided by a fuel cell stack is stored in a memory. Upon startup of the system, a particular reactant flow is provided to the fuel cell stack based on the stored data. A new reactant flow that corresponds to current output power level being provided by the fuel cell stack is learned by adjusting the reactant flow until the fuel cell system is operating at a desired performance level. The stored data is then adapted based on the learned new reactant flow and the adapted data replaces the data that was previously stored in the memory. In this manner, a more exact starting reactant stoichiometric ratio(s) may be determined while the fuel cell system is in operation. This learned reactant stoichiometric ratio may then be used the next time the fuel cell system is powered up, thus, increasing the operating efficiency of the fuel cell system.

    摘要翻译： 一种可用于向负载提供电力并且用于学习用于启动燃料电池系统的最佳反应物化学计量比的燃料电池系统的技术。 根据该技术，代表多个反应物流的数据被存储在存储器中，每个反应物流量对应于由燃料电池堆提供的输出功率水平。 在系统启动时，基于存储的数据向燃料电池堆提供特定的反应物流。 通过调节反应物流直到燃料电池系统以期望的性能水平运行，获得对应于由燃料电池堆提供的电流输出功率水平的新的反应物流。 然后基于所学习的新反应物流来适应所存储的数据，并且所适配的数据替换先前存储在存储器中的数据。 以这种方式，可以在燃料电池系统运行时确定更准确的起始反应物化学计量比。 然后可以在下一次燃料电池系统通电时使用所了解的反应物化学计量比，从而提高燃料电池系统的运行效率。