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    Transient inlet relative humidity estimation via adaptive cathode humidification unit model and high frequency resistance
    11.
    发明授权
    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进行瞬态入口相对湿度估计

    公开(公告)号：US09172103B2

    公开(公告)日：2015-10-27

    申请号：US13741803

    申请日：2013-01-15

    Applicant: GM Global Technology Operations LLC

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

    IPC: H01M8/04 ,  H01M8/10

    CPC classification number: H01M8/04126 ,  H01M8/04305 ,  H01M8/04649 ,  H01M8/04835 ,  H01M2008/1095

    Abstract: 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.

    Abstract translation: 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。

    ANODE LEAK LOCATION DETECTION
    12.
    发明申请
    ANODE LEAK LOCATION DETECTION 有权
    阳极泄漏位置检测

    公开(公告)号：US20140162171A1

    公开(公告)日：2014-06-12

    申请号：US13706781

    申请日：2012-12-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Daniel C. Di Fiore ,  Manish Sinha ,  Steven R. Falta ,  Matthew A. Lang

    IPC: H01M8/04

    CPC classification number: H01M8/04664 ,  H01M8/04097 ,  H01M8/04313 ,  H01M8/04395 ,  H01M8/04402 ,  H01M8/0441 ,  H01M8/0444 ,  H01M8/04679 ,  H01M8/04753 ,  H01M8/04791 ,  H01M8/04798 ,  H01M8/04992 ,  H01M2008/1095 ,  Y02E60/50

    Abstract: A system and method for quantifying an anode leak location in a fuel cell system. The system and method include determining there is a leak in an anode sub-system of a fuel cell stack and estimating a first effective leak area using a first leak flow value and first operating parameters. The system and method also include increasing airflow to a cathode side of the fuel cell stack and estimating a second leak effective area using a second leak flow value and second operating parameters. The system and method further include comparing the first leak effective area to the second leak effective area and determining an anode outflow leak location based on the comparison between the first and second leak effective areas.

    Abstract translation: 一种用于量化燃料电池系统中的阳极泄漏位置的系统和方法。 该系统和方法包括确定在燃料电池堆的阳极子系统中存在泄漏并且使用第一泄漏流值和第一运行参数来估计第一有效泄漏区域。 该系统和方法还包括增加到燃料电池堆的阴极侧的气流，并且使用第二泄漏流值和第二操作参数来估计第二泄漏有效区域。 该系统和方法还包括将第一泄漏有效区域与第二泄漏有效区域进行比较，并且基于第一和第二泄漏有效区域之间的比较来确定阳极流出泄漏位置。

    CONTROLLING PURGE OPERATION FOR FUEL CELL ASSEMBLY
    15.
    发明申请
    CONTROLLING PURGE OPERATION FOR FUEL CELL ASSEMBLY 有权

    公开(公告)号：US20220216490A1

    公开(公告)日：2022-07-07

    申请号：US17140551

    申请日：2021-01-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Biju Edamana ,  Aaron R. Rogahn ,  Michael D. Cartwright ,  Manish Sinha

    IPC: H01M8/04228 ,  H01M8/04225 ,  H01M8/0432 ,  H01M8/04492

    Abstract: A system for controlling purge operation of a fuel cell assembly includes a controller and one or more sensors configured to obtain respective sensor data. The fuel cell stack is configured to receive a stack coolant. The controller is configured to execute a first purge mode when at least one of a first enabling condition and a second enabling condition is met. The first purge mode defines a first group of setpoints, including a relatively low cathode stoichiometric ratio. The controller is configured to switch to a second purge mode when the coolant temperature is above a minimum warm-up temperature and a third mode when a relative humidity value of a stack cathode output falls below a threshold humidity. The second purge mode defines a second group of setpoints, including a relatively high cathode stoichiometric ratio.

    METHOD AND APPARATUS FOR MONITORING A FUEL CELL
    16.
    发明申请
    METHOD AND APPARATUS FOR MONITORING A FUEL CELL 有权

    公开(公告)号：US20210063493A1

    公开(公告)日：2021-03-04

    申请号：US16560398

    申请日：2019-09-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chad Dubois ,  Jie Kou ,  Manish Sinha ,  Xiaofeng Wang

    IPC: G01R31/396 ,  H01M8/04664 ,  H01M8/04746

    Abstract: An anode system is arranged to supply pressurized hydrogen to the anode of a fuel cell, and includes a multi-injector system. A controller is executable to monitor, via a pressure sensor, pressure in the anode system and command actuations of the plurality of hydrogen injectors. The controller may detect a fault in the multi-injector system when the commanded actuations of the plurality of hydrogen injectors are greater than a first threshold and the pressure in the anode system cell is less than a second threshold. The controller may execute alternating actuation of the hydrogen injectors of the multi-injector system and monitor the pressure in the anode system to detect a fault in one of the hydrogen injectors based upon the pressure in the anode system.

    SHUTDOWN METHOD OF FUEL CELL STACK AND FUEL CELL SYSTEM THEREFOR
    18.
    发明申请
    SHUTDOWN METHOD OF FUEL CELL STACK AND FUEL CELL SYSTEM THEREFOR 审中-公开
    燃料电池堆和燃料电池系统的关闭方法

    公开(公告)号：US20160372767A1

    公开(公告)日：2016-12-22

    申请号：US14742785

    申请日：2015-06-18

    Applicant: GM Global Technology Operations LLC ,  Honda Motor Co., Ltd.

    Inventor： Manish Sinha ,  Michael Cartwright ,  Pinkhas A. Rapaport ,  Asao Uenodai

    IPC: H01M8/04

    Abstract: A fuel cell stack, a method of operating a fuel cell stack and a fuel cell system. In one particular form, shutting down the stack upon detection of a leakage of fuel either within the stack or from the stack involves depressurizing and uniform consumption of hydrogen by catalytic consumption in the cathode of all cells. Upon consumption of oxygen in the cathode portion of the stack by chemical reaction, the remaining unreacted nitrogen from the air acts as an inerting fluid. After an indication of reaction cessation is established, at least some of the inerting fluid is conveyed from the cathode portion to the anode portion. One or more of a bleed valve, backpressure valve and bypass valve are manipulated to promote the anode portion depressurization, cathode portion inerting and subsequent conveyance of the inerting fluid to the stack anode portion.

    Abstract translation: 燃料电池堆，操作燃料电池堆的方法和燃料电池系统。 在一种特定形式中，在检测到堆叠或堆叠内的燃料泄漏的情况下关闭堆叠包括通过所有电池的阴极中的催化消耗来降低氢气并使其均匀消耗。 当通过化学反应在堆叠的阴极部分中消耗氧时，来自空气的剩余的未反应的氮作为惰性流体。 在建立反应停止的指示之后，至少一些惰性流体从阴极部分输送到阳极部分。 操纵排气阀，背压阀和旁通阀中的一个或多个以促进阳极部分减压，阴极部分惰化和随后将惰性流体输送到堆叠阳极部分。

    SYSTEM AND METHOD FOR OPERATING A FUEL CELL
    19.
    发明申请
    SYSTEM AND METHOD FOR OPERATING A FUEL CELL 有权

    公开(公告)号：US20250079487A1

    公开(公告)日：2025-03-06

    申请号：US18459598

    申请日：2023-09-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Biju Edamana ,  Manish Sinha ,  Venkatesh Venkadasamy ,  William H. Pettit ,  Rodney J. Rhodes

    IPC: H01M8/04537 ,  H01M8/04858

    Abstract: A hybrid system including a high-voltage bus, a high-voltage battery electrically connected to the high-voltage bus, a fuel cell power device electrically connected to the high-voltage bus, and a drive unit electrically connected to the high-voltage bus. A controller is electrically connected to the drive unit, the fuel cell power device, and the high-voltage battery. The controller is configured to identify an application power request for the drive unit and determine a relationship between the application power request and an optimal membrane life power for the fuel cell power device. The controller is also configured to direct the fuel cell power device to operate between the optimal membrane life power and a second power. The application power request is at a power level between the optimal membrane life power and the second power.

    Controlling purge operation for fuel cell assembly
    20.
    发明授权
    Controlling purge operation for fuel cell assembly 有权

    公开(公告)号：US11641022B2

    公开(公告)日：2023-05-02

    申请号：US17140551

    申请日：2021-01-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Biju Edamana ,  Aaron R. Rogahn ,  Michael D. Cartwright ,  Manish Sinha

    IPC: H01M8/04228 ,  H01M8/04492 ,  H01M8/0432 ,  H01M8/04225

    Abstract: A system for controlling purge operation of a fuel cell assembly includes a controller and one or more sensors configured to obtain respective sensor data. The fuel cell stack is configured to receive a stack coolant. The controller is configured to execute a first purge mode when at least one of a first enabling condition and a second enabling condition is met. The first purge mode defines a first group of setpoints, including a relatively low cathode stoichiometric ratio. The controller is configured to switch to a second purge mode when the coolant temperature is above a minimum warm-up temperature and a third mode when a relative humidity value of a stack cathode output falls below a threshold humidity. The second purge mode defines a second group of setpoints, including a relatively high cathode stoichiometric ratio.

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