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    Transient Inlet Relative Humidity Estimation Via Adaptive Cathode Humidification Unit Model And High Frequency Resistance
    3.
    发明申请
    Transient Inlet Relative Humidity Estimation Via Adaptive Cathode Humidification Unit Model And High Frequency Resistance 有权
    通过自适应阴极加湿单元模型和高频阻抗的瞬态入口相对湿度估计

    公开(公告)号：US20140199605A1

    公开(公告)日：2014-07-17

    申请号：US13741803

    申请日：2013-01-15

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Manish Sinha ,  Sergio E. Garcia ,  Todd K. Preston ,  Edward G. Himes

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04126 ,  H01M8/04305 ,  H01M8/04649 ,  H01M8/04835 ,  H01M2008/1095

    摘要： An apparatus and method to determine the relative humidity of a fuel cell system. A controller is cooperative with a first device and a second device to receive a valve signal and a high frequency resistance value. The controller controls the relative humidity of a fuel cell stack based on the estimation of the relative humidity of the fuel cell stack based on one or more algorithms. The controller modifies the relative humidity of the fuel cell stack through changes in the position of a valve based on at least one of the valve signal and the high frequency resistance value. In one form, the relative humidity of the fuel cell system is determined without the need of a humidity sensor.

    摘要翻译： 一种确定燃料电池系统的相对湿度的装置和方法。 控制器与第一装置和第二装置协作以接收阀信号和高频电阻值。 基于一种或多种算法，基于燃料电池堆的相对湿度的估计，控制器控制燃料电池堆的相对湿度。 控制器基于阀信号和高频电阻值中的至少一个，通过阀的位置的变化来改变燃料电池堆的相对湿度。 在一种形式中，确定燃料电池系统的相对湿度，而不需要湿度传感器。

    Cell reversal diagnostics for a fuel cell stack
    4.
    发明授权
    Cell reversal diagnostics for a fuel cell stack 有权

    公开(公告)号：US10971745B2

    公开(公告)日：2021-04-06

    申请号：US15866599

    申请日：2018-01-10

    申请人： GM Global Technology Operations LLC

    发明人： Manish Sinha ,  Jingxin Zhang ,  Andrew J. Maslyn

    IPC分类号： H01M8/04664 ,  H01M8/04992 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/04858 ,  B60L11/18 ,  H01M8/0432 ,  H01M8/04223 ,  B60L58/30

    摘要： A fuel cell reversal event is diagnosed by integrating current density via a controller in response to determine an accumulated charge density. The controller executes a control action when the accumulated charge density exceeds a threshold, including recording a diagnostic code indicative of event severity. The control action may include continuing stack operation at reduced power capability when the accumulated charge density exceeds a first threshold and shutting off the stack when the accumulated charge density exceeds a higher second threshold. The event may be detected by calculating a voltage difference between an average and a minimum cell voltage, and then determining if the difference exceeds a voltage difference threshold. The charge density thresholds may be adjusted based on age, state of health, and/or temperature of the fuel cell or stack. A fuel cell system includes the stack and controller.

    ELECTROCHEMICAL HYDROGEN SENSOR FOR GLOBAL/LOCAL HYDROGEN STARVATION DETECTION IN PEM FUEL CELLS
    10.
    发明申请
    ELECTROCHEMICAL HYDROGEN SENSOR FOR GLOBAL/LOCAL HYDROGEN STARVATION DETECTION IN PEM FUEL CELLS 审中-公开
    电化学氢传感器，用于全球/本地氢气开采检测在PEM燃料电池

    公开(公告)号：US20170025692A1

    公开(公告)日：2017-01-26

    申请号：US14804706

    申请日：2015-07-21

    申请人： GM Global Technology Operations LLC

    发明人： Jingxin Zhang ,  Balasubramanian Lakshmanan ,  Manish Sinha

    IPC分类号： H01M8/04 ,  H01M8/06 ,  G01N27/403

    CPC分类号： H01M8/04447 ,  H01M8/04798 ,  H01M8/04873 ,  H01M8/0656

    摘要： A fuel cell stack hydrogen starvation detection device, a fuel cell system and a method of operating a fuel cell stack to protect it from hydrogen starvation conditions. In one particular form, the fuel cell system includes a stack of fuel cells, a controller and a detection device made up of one or more sensors that can compare a reference signal corresponding to the presence of substantially pure hydrogen to a signal that corresponds to a local hydrogen value within a single fuel cell within the stack or across multiple fuel cells within the stack. In this way, the detection device promptly provides indicia of a hydrogen starvation condition within the cell or stack without the need for conventional cell voltage monitoring. The detected hydrogen starvation condition may be presented as a warning signal to alert a user that such a condition may be present, as well as to the controller for modification of the stack operation.

    摘要翻译： 燃料电池堆氢饥饿检测装置，燃料电池系统和操作燃料电池堆的方法，以保护其免受氢的饥饿条件的影响。 在一种具体形式中，燃料电池系统包括一堆燃料电池，一个控制器和一个由一个或多个传感器组成的检测装置，该传感器可以将对应于基本上纯氢的存在的参考信号与对应于 堆内或单个燃料电池内的局部氢值位于堆内的多个燃料电池。 以这种方式，检测装置在电池或堆叠内迅速提供氢饥饿状况的标记，而不需要传统的电池电压监测。 检测到的氢饥饿状况可以作为警告信号呈现，以警告用户这种情况可能存在，以及控制器用于修改堆栈操作。