Feedback-based control of a PEM fuel cell for high temperature protection
    1.
    发明申请
    Feedback-based control of a PEM fuel cell for high temperature protection 审中-公开
    用于高温保护的PEM燃料电池的基于反馈的控制

    公开(公告)号:US20080124596A1

    公开(公告)日:2008-05-29

    申请号:US11592589

    申请日:2006-11-03

    IPC分类号: H01M8/04

    摘要: A fuel cell system that employs an algorithm for limiting the current output from a fuel cell stack using feedback during high stack temperature operation. The system includes a PID controller that receives an error signal that is the difference between the cooling fluid output temperature from the stack and a predetermined temperature value. The algorithm detects whether the cooling fluid output temperature goes above a predetermined temperature value, and if so, calculates a proportional gain component and an integral gain component that sets the proportional and integral gains of the PID controller. Based on the proportional gain component, the integral gain component and the error signal, the algorithm generates a total current allowed, and sets the maximum current draw from the stack accordingly. The rate of the rise or fall of the allowed current from the stack from the actual current is limited to provide a smooth transition.

    摘要翻译: 一种燃料电池系统,其采用在高堆叠温度运行期间使用反馈来限制来自燃料电池堆的电流输出的算法。 该系统包括PID控制器,其接收作为来自堆叠的冷却流体输出温度与预定温度值之间的差的误差信号。 该算法检测冷却液输出温度是否超过预定温度值,如果是,则计算设定PID控制器的比例积分增益的比例增益分量和积分增益分量。 基于比例增益分量,积分增益分量和误差信号,该算法生成允许的总电流,并相应地设置来自堆栈的最大电流消耗。 来自堆叠的允许电流从实际电流的上升或下降的速率被限制以提供平滑的过渡。

    STANDBY MODE FOR OPTIMIZATION OF EFFICIENCY AND DURABILITY OF A FUEL CELL VEHICLE APPLICATION
    2.
    发明申请
    STANDBY MODE FOR OPTIMIZATION OF EFFICIENCY AND DURABILITY OF A FUEL CELL VEHICLE APPLICATION 审中-公开
    用于优化燃料电池车辆应用的效率和耐久性的待机模式

    公开(公告)号:US20110087389A1

    公开(公告)日:2011-04-14

    申请号:US12723261

    申请日:2010-03-12

    IPC分类号: G06F19/00

    摘要: A system and method for putting a fuel cell vehicle system into a stand-by mode where there is little or no power being consumed, the quantity of fuel being used is minimal and the fuel cell system is able to quickly recover from the mode. The method includes determining whether predetermined stand-by mode vehicle level entrance criteria have been satisfied at a vehicle control level and predetermined stand-by mode fuel cell level entrance criteria have been satisfied for a fuel cell system control level, and putting the vehicle in the stand-by mode if both the vehicle level entrance criteria and the fuel cell level entrance criteria have been satisfied. The method exits the stand-by mode if predetermined vehicle level exit criteria have been satisfied or predetermined fuel cell level exit criteria have been satisfied.

    摘要翻译: 一种用于将燃料电池车辆系统置于消耗很少或没有电力的待机模式的系统和方法,所使用的燃料量最小并且燃料电池系统能够从该模式快速恢复。 该方法包括确定在车辆控制级别是否已经满足预定待机模式车辆级别入门标准,并且已经满足燃料电池系统控制级别的预定待机模式燃料电池电平入口标准,并将车辆放置在 如果车辆等级进入标准和燃料电池电平入口标准均已满足,则备用模式。 如果已经满足预定的车辆级别的出口标准或已经满足预定的燃料电池级别的出口标准,则该方法退出待机模式。

    Method for fast and reliable fuel cell system start-ups
    4.
    发明授权
    Method for fast and reliable fuel cell system start-ups 有权
    快速可靠的燃料电池系统启动方法

    公开(公告)号:US07993787B2

    公开(公告)日:2011-08-09

    申请号:US11859300

    申请日:2007-09-21

    IPC分类号: H01M8/04

    摘要: A method for providing a fast and reliable start-up of a fuel cell system. The method uses a stack voltage response to a load to assess if hydrogen and oxygen are being sufficiently distributed to all of the fuel cells by coupling an auxiliary load to the fuel cell stack until a predetermined minimum cell voltage has been reached or a first predetermined time period has elapsed. The method then determines whether a minimum cell voltage has dropped to a first predetermined voltage and, if so, reduces the maximum power allowed to be below the first predetermined voltage value, determines whether the minimum cell voltage in the stack is below a second predetermined voltage, or determines whether the minimum cell voltage drop rate is greater than a predetermined voltage drop rate. If none of these conditions are met, the method returns to loading the stack with system components.

    摘要翻译: 一种用于提供快速可靠的燃料电池系统启动的方法。 该方法使用对负载的堆叠电压响应来评估氢和氧是否通过将辅助负载耦合到燃料电池堆而充分地分配给所有燃料电池,直到达到预定的最小电池电压或第一预定时间 时间过去了 然后,该方法确定最小单元电压是否已经下降到第一预定电压,如果是,则将允许的最大功率减小到低于第一预定电压值,确定堆叠中的最小单元电压是否低于第二预定电压 ,或者确定最小单元电压降率是否大于预定的电压降率。 如果没有满足这些条件,则该方法返回使用系统组件加载堆栈。

    Method for Fast and Reliable Fuel Cell System Start-Ups
    6.
    发明申请
    Method for Fast and Reliable Fuel Cell System Start-Ups 有权
    快速可靠的燃料电池系统启动方法

    公开(公告)号:US20090081491A1

    公开(公告)日:2009-03-26

    申请号:US11859300

    申请日:2007-09-21

    IPC分类号: H01M8/02

    摘要: A method for providing a fast and reliable start-up of a fuel cell system. The method uses a stack voltage response to a load to assess if hydrogen and oxygen are being sufficiently distributed to all of the fuel cells by coupling an auxiliary load to the fuel cell stack until a predetermined minimum cell voltage has been reached or a first predetermined time period has elapsed. The method then determines whether a minimum cell voltage has dropped to a first predetermined voltage and, if so, reduces the maximum power allowed to be below the first predetermined voltage value, determines whether the minimum cell voltage in the stack is below a second predetermined voltage, or determines whether the minimum cell voltage drop rate is greater than a predetermined voltage drop rate. If none of these conditions are met, the method returns to loading the stack with system components.

    摘要翻译: 一种用于提供快速可靠的燃料电池系统启动的方法。 该方法使用对负载的堆叠电压响应来评估氢和氧是否通过将辅助负载耦合到燃料电池堆而充分地分配给所有燃料电池,直到达到预定的最小电池电压或第一预定时间 时间过去了 然后,该方法确定最小单元电压是否已经下降到第一预定电压,如果是,则将允许的最大功率减小到低于第一预定电压值,确定堆叠中的最小单元电压是否低于第二预定电压 ,或者确定最小单元电压降率是否大于预定的电压降率。 如果没有满足这些条件,则该方法返回使用系统组件加载堆栈。

    METHOD FOR DETERMINING IF A FUEL CELL STACK IS OVERHEATING USING STACK END PLATE TEMPERATURE SENSORS
    7.
    发明申请
    METHOD FOR DETERMINING IF A FUEL CELL STACK IS OVERHEATING USING STACK END PLATE TEMPERATURE SENSORS 有权
    如果燃料电池堆栈使用堆叠端板温度传感器过热,则确定方法

    公开(公告)号:US20110033766A1

    公开(公告)日:2011-02-10

    申请号:US12909696

    申请日:2010-10-21

    IPC分类号: H01M8/04

    摘要: A method for determining whether a fuel cell stack is overheating. The method measures the temperature of end cells in the stack using end cell temperature sensors, and calculates an average end cell temperature based on the end cell temperature measurements. The method also measures the temperature of a cooling fluid being output from the fuel cell stack. The method determines if any of the measured end cell temperatures are outlying by comparing each end cell temperature measurement to the average. The method determines that the cooling fluid outlet temperature sensor has possibly failed if the cooling fluid outlet temperature is greater than the average end cell temperature and the cooling fluid outlet temperature minus the average end cell temperature is greater than a predetermined temperature value.

    摘要翻译: 一种用于确定燃料电池堆是否过热的方法。 该方法使用端单元温度传感器测量堆叠中的端电池的温度,并且基于端电池温度测量来计算平均端电池温度。 该方法还测量从燃料电池堆输出的冷却流体的温度。 该方法通过将每个终端电池温度测量与平均值进行比较来确定测量的终端电池温度是否偏离。 如果冷却流体出口温度大于平均端电池温度并且冷却流体出口温度减去平均端电池温度大于预定温度值,则该方法确定冷却液出口温度传感器可能失效。

    Strategies for mitigating cell degradation during start-up and shutdown with H2/N2 storage
    8.
    发明授权
    Strategies for mitigating cell degradation during start-up and shutdown with H2/N2 storage 有权
    在H2 / N2存储启动和关闭期间减轻电池退化的策略

    公开(公告)号:US07862942B2

    公开(公告)日:2011-01-04

    申请号:US11669893

    申请日:2007-01-31

    IPC分类号: H01M8/04

    摘要: A system and method for reducing cathode carbon corrosion during start-up of a fuel cell stack. If a long enough period of time has gone by since the last system shutdown, then both the anode side and the cathode side of the stack will be filled with air. If the system includes split sub-stacks, then a start-up sequence uses a fast hydrogen purge through each sub-stack separately so as to minimize the time of the hydrogen/air front flowing through the anode side of the stacks. The start-up sequence then employs a slow hydrogen purge through the sub-stacks at the same time. If the time from the last shutdown is short enough where a significant amount of hydrogen still exists in the cathode side and the anode side of the sub-stacks, then the fast hydrogen purge can be eliminated, and the start-up sequence proceeds directly to the slow hydrogen purge.

    摘要翻译: 一种用于在燃料电池堆启动期间减少阴极碳腐蚀的系统和方法。 如果从上一次系统关机起已经过了足够长的时间,那么堆叠的阳极侧和阴极侧将充满空气。 如果系统包括拆分的子堆叠,则启动顺序分别使用每个子堆的快速氢气吹扫,以便最小化氢/空气前沿流经堆叠的阳极侧的时间。 然后启动序列同时通过子堆的慢氢气清洗。 如果在最后停机的时间足够短,在堆叠的阴极侧和阳极侧仍然存在显着量的氢气,则可以消除快速氢气清洗,并且启动顺序直接进行到 慢氢气清洗。

    Strategies for Mitigating Cell Degradation During Start-Up and Shutdown with H2/N2 Storage
    9.
    发明申请
    Strategies for Mitigating Cell Degradation During Start-Up and Shutdown with H2/N2 Storage 有权
    在H2 / N2储存启动和关闭期间缓解细胞降解的策略

    公开(公告)号:US20080182138A1

    公开(公告)日:2008-07-31

    申请号:US11669893

    申请日:2007-01-31

    IPC分类号: H01M8/02

    摘要: A system and method for reducing cathode carbon corrosion during start-up of a fuel cell stack. If a long enough period of time has gone by since the last system shutdown, then both the anode side and the cathode side of the stack will be filled with air. If the system includes split sub-stacks, then a start-up sequence uses a fast hydrogen purge through each sub-stack separately so as to minimize the time of the hydrogen/air front flowing through the anode side of the stacks. The start-up sequence then employs a slow hydrogen purge through the sub-stacks at the same time. If the time from the last shutdown is short enough where a significant amount of hydrogen still exists in the cathode side and the anode side of the sub-stacks, then the fast hydrogen purge can be eliminated, and the start-up sequence proceeds directly to the slow hydrogen purge.

    摘要翻译: 一种用于在燃料电池堆启动期间减少阴极碳腐蚀的系统和方法。 如果从上一次系统关机起已经过了足够长的时间,那么堆叠的阳极侧和阴极侧将充满空气。 如果系统包括拆分的子堆叠,则启动顺序分别使用每个子堆的快速氢气吹扫,以便最小化氢/空气前沿流经堆叠的阳极侧的时间。 然后启动序列同时通过子堆的慢氢气清洗。 如果在最后停机的时间足够短,在堆叠的阴极侧和阳极侧仍然存在显着量的氢气,则可以消除快速氢气吹扫,并且启动顺序直接进行到 慢氢气清洗。

    Method for determining if a fuel cell stack is overheating using stack end plate temperature sensors
    10.
    发明授权
    Method for determining if a fuel cell stack is overheating using stack end plate temperature sensors 有权
    用于确定燃料电池堆是否使用堆垛端板温度传感器过热的方法

    公开(公告)号:US08051546B2

    公开(公告)日:2011-11-08

    申请号:US12909696

    申请日:2010-10-21

    IPC分类号: H01M8/04

    摘要: A method for determining whether a fuel cell stack is overheating. The method measures the temperature of end cells in the stack using end cell temperature sensors, and calculates an average end cell temperature based on the end cell temperature measurements. The method also measures the temperature of a cooling fluid being output from the fuel cell stack. The method determines if any of the measured end cell temperatures are outlying by comparing each end cell temperature measurement to the average. The method determines that the cooling fluid outlet temperature sensor has possibly failed if the cooling fluid outlet temperature is greater than the average end cell temperature and the cooling fluid outlet temperature minus the average end cell temperature is greater than a predetermined temperature value.

    摘要翻译: 一种用于确定燃料电池堆是否过热的方法。 该方法使用端单元温度传感器测量堆叠中的端电池的温度,并且基于端电池温度测量来计算平均端电池温度。 该方法还测量从燃料电池堆输出的冷却流体的温度。 该方法通过将每个终端电池温度测量与平均值进行比较来确定测量的终端电池温度是否偏离。 如果冷却流体出口温度大于平均端电池温度并且冷却流体出口温度减去平均端电池温度大于预定温度值,则该方法确定冷却液出口温度传感器可能失效。