Methods and apparatus for improving the cold starting capability of a fuel cell
    92.
    发明申请
    Methods and apparatus for improving the cold starting capability of a fuel cell 有权
    提高燃料电池冷启动能力的方法和装置

    公开(公告)号:US20030186093A1

    公开(公告)日:2003-10-02

    申请号:US10109982

    申请日:2002-03-28

    Abstract: Apparatus and methods of ceasing operation of an electric power generating system improve the cold starting capability of the system. The system comprises a fuel cell stack connectable to an external circuit for supplying power to the external circuit. The stack comprises at least one solid polymer fuel cell, and the system further comprises a fuel passage for directing a fuel stream through the stack and an oxidant passage for directing an oxidant stream through the stack, a sensor assembly connected to the stack for monitoring a parameter indicative of stack performance, a controller for controlling at least one stack operating parameter, and a control system communicative with the sensor assembly and stack operating parameter controller. The method comprises adjusting at least one stack operating parameter to cause the stack to operate under a drying condition that causes a net outflux of water from the stack, operating the stack under the drying condition until the water content in the stack has been reduced, and interrupting supply of power from the stack to the external circuit.

    Abstract translation: 发电系统停止运转的装置和方法提高了系统的冷启动能力。 该系统包括可连接到用于向外部电路供电的外部电路的燃料电池堆。 所述堆叠包括至少一个固体聚合物燃料电池,并且所述系统还包括用于引导燃料流通过所述堆叠的燃料通道和用于引导氧化剂流通过所述堆的氧化剂通道,连接到所述堆的传感器组件,用于监测 指示堆叠性能的参数,用于控制至少一个堆叠操作参数的控制器以及与传感器组件和堆叠操作参数控制器通信的控制系统。 该方法包括调整至少一个堆叠操作参数以使堆叠在干燥条件下操作,该干燥条件导致来自堆叠的水的净溢出,在干燥条件下操作堆叠,直到堆叠中的水含量已经减少,以及 中断从堆栈向外部电路供电。

    Method for measuring water content of fuel cell based on conductivity of electrolyte
    93.
    发明申请
    Method for measuring water content of fuel cell based on conductivity of electrolyte 失效
    基于电解质的电导率测量燃料电池的含水量的方法

    公开(公告)号:US20020180448A1

    公开(公告)日:2002-12-05

    申请号:US10151195

    申请日:2002-05-20

    Abstract: A measuring method first calculates the conductivity of an electrolyte membrane based on measured output voltage and output current of a fuel cell. The water content of an oxidant channel as an index of present water content (PWC) of the fuel cell is calculated based on the calculated conductivity and the other measured physical quantities of the fuel cell. Further the method calculates the water content of the oxidant channel after the inside of the fuel cell reaches a steady state as an index of future water content (FWC) using the measured physical quantities. The PWC index and FWC index are compared, and it is finally determined, based on the result of the comparison and the difference between the previous and present values of the conductivity, whether the water content of the fuel cell is short or excessive at the present time.

    Abstract translation: 测量方法首先基于测量的燃料电池的输出电压和输出电流来计算电解质膜的电导率。 基于所计算的电导率和燃料电池的其他测量物理量,计算作为燃料电池的当前含水量(PWC)的指标的氧化剂通道的水含量。 此外,该方法使用测量的物理量计算燃料电池内部达到稳定状态之后的氧化剂通道的含水量作为未来含水量(FWC)的指标。 比较PWC指数和FWC指数,最终根据比较结果和电导率的先前和现在值之间的差异,确定燃料电池的含水量是否短或过量 时间。

    Fuel cell assembly
    100.
    发明授权
    Fuel cell assembly 有权
    燃料电池组件

    公开(公告)号:US09406966B2

    公开(公告)日:2016-08-02

    申请号:US14378644

    申请日:2013-01-17

    Abstract: A fuel cell assembly comprising an enclosure having a fuel cell stack mounted therein, and an inlet opening into the enclosure. The fuel cell stack having an inlet face for receiving coolant/oxidant fluid. The fuel cell assembly further comprises a delivery gallery extending from the inlet in the enclosure to the inlet face of the fuel cell stack, the delivery gallery having a first region and a second region separated by an aperture. The delivery gallery and aperture are configured such that, in use, coolant/oxidant fluid within the first region of the delivery gallery is turbulent, and coolant/oxidant fluid within the second region of the delivery gallery has a generally uniform pressure.

    Abstract translation: 一种燃料电池组件,包括具有安装在其中的燃料电池堆的外壳和进入外壳的入口。 燃料电池堆具有用于接收冷却剂/氧化剂流体的入口面。 燃料电池组件还包括从外壳中的入口延伸到燃料电池堆的入口面的输送廊,输送廊具有第一区域和由孔分开的第二区域。 输送廊和孔被构造成使得在使用中,输送廊的第一区域内的冷却剂/氧化剂流体是湍流的,并且在输送廊的第二区域内的冷却剂/氧化剂流体具有大致均匀的压力。

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