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    • 74. 发明授权
    • Fuel cell system
    • 燃料电池系统
    • US09225028B2
    • 2015-12-29
    • US12810127
    • 2008-12-18
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • H01M8/04H01M8/10
    • H01M8/0432H01M8/04268H01M8/04335H01M8/04358H01M8/04388H01M8/04395H01M8/04559H01M8/04589H01M8/0488H01M8/0491H01M2008/1095H01M2250/20Y02E60/50Y02T90/32
    • A fuel cell system capable of carrying out a proper current limiting even when decreasing a cell voltage through, e.g., a rapid warm-up is provided. When a rapid warm-up is started, an acceptable cell-voltage value setting part sets a acceptable lowest-cell-voltage value in accordance with the operation state of a fuel cell. Meanwhile, a target cell-voltage value setting part sets an initial value for a target lowest-cell-voltage value. The target cell-voltage value setting part then compares a lowest cell voltage detected by a cell monitor with the set target lowest-cell-voltage value, and judges whether or not the lowest cell voltage is near the target lowest-cell-voltage value continuously for a given time period. If the result of the judgment is positive, the target cell-voltage value setting part updates the target lowest-cell-voltage value with a value obtained by decreasing the target lowest-cell-voltage value only by an update width.
    • 提供了即使在通过例如快速预热来降低电池电压时也能够执行适当的电流限制的燃料电池系统。 当快速预热开始时,可​​接受的电池电压值设定部分根据燃料电池的运行状态设定可接受的最低电池电压值。 同时,目标电池电压值设定部设定目标最低电池电压值的初始值。 目标单元电压值设定部分将由单元监视器检测的最低单元电压与设定的目标最小单元电压值进行比较,并且连续地判断最低单元电压是否接近目标最小单元电压值 在给定的时间段内 如果判断结果是肯定的,则目标单元电压值设定部分用目标最小单元电压值减去更新宽度获得的值来更新目标最小单元电压值。
    • 75. 发明授权
    • Fuel cell system
    • 燃料电池系统
    • US08691453B2
    • 2014-04-08
    • US12810121
    • 2008-12-02
    • Naoki KanieYoshiaki NaganumaTomoya Ogawa
    • Naoki KanieYoshiaki NaganumaTomoya Ogawa
    • H01M8/06
    • H01M8/04089H01M8/04664H01M8/04947
    • Even if a failure occurs in a bypass valve during low-efficiency power generation, the occurrence of an excessive stoichiometry ratio in a fuel cell can be prevented. An output from a pressure sensor or a current sensor is monitored by a control device, and when a failure associated with a closed-valve malfunction of the bypass valve occurs, the degree of opening of the pressure regulating valve is increased to increase an amount of cathode-off gas exhaust, and a revolution speed of an air compressor is reduced to an amount of air discharged by the air compressor, thereby preventing an excessive stoichiometry ratio in the fuel cell.
    • 即使在低效率发电期间在旁通阀中发生故障,也能够防止燃料电池中的化学计量比过大的发生。 压力传感器或电流传感器的输出由控制装置监控,当发生与旁通阀的闭阀故障相关的故障时,压力调节阀的打开程度增加, 阴极废气排出,空气压缩机的转速降低到由空气压缩机排出的空气量,从而防止燃料电池中的过量的化学计量比。
    • 77. 发明授权
    • Fuel cell system and current control method with PI compensation based on minimum cell voltage
    • 基于最小电池电压的PI补偿的燃料电池系统和电流控制方法
    • US08227123B2
    • 2012-07-24
    • US12598532
    • 2008-06-27
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • H01M8/04
    • H01M8/04552B60L11/1881B60L11/1887B60L11/1892B60L11/1894H01M8/0491Y02T90/34
    • A control unit 80, when calculating a request current I0 according to a system request electric power Preq and calculating a target current I1 by correcting the request current I0 with PI compensation calculation based on a minimum cell voltage Vm detected by a cell monitor 101, variably changes a proportional gain Kp according to the current value at the present time when calculating a current limit value ΔI as the amount of correction of a request current I0 according to the equation ΔI=ΔV×Kp+ΔΣV×Ki, thereby enhancing controllability to control the current of a fuel cell 20 to a target current value I1. When controlling the current of a fuel cell by determining a target current value by correcting a request current by PI compensation using the difference between a minimum cell voltage and a threshold voltage, controllability to control the current of the fuel cell to the target current value can be enhanced.
    • 控制单元80,当根据系统请求电力Preq计算请求电流I0并通过基于由单元监视器101检测到的最小单元电压Vm的PI补偿计算来校正请求电流I0来计算目标电流I1时,可变地 根据等式&Dgr计算电流限制值&Dgr; I作为请求电流I0的校正量,根据当前值根据当前值改变比例增益Kp; I =&Dgr; V×Kp +&Dgr;&Sgr ; V×Ki,从而提高了将燃料电池20的电流控制为目标电流值I1的可控性。 当通过使用最小单元电压和阈值电压之间的差校正PI补偿的PI补偿来确定目标电流值来控制燃料电池的电流时,可以将燃料电池的电流控制到目标电流值 加强。
    • 78. 发明申请
    • FUEL CELL SYSTEM
    • 燃油电池系统
    • US20100273075A1
    • 2010-10-28
    • US12810127
    • 2008-12-18
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • Hiroyuki ImanishiKota ManabeTomoya Ogawa
    • H01M8/04
    • H01M8/0432H01M8/04268H01M8/04335H01M8/04358H01M8/04388H01M8/04395H01M8/04559H01M8/04589H01M8/0488H01M8/0491H01M2008/1095H01M2250/20Y02E60/50Y02T90/32
    • A fuel cell system capable of carrying out a proper current limiting even when decreasing a cell voltage through, e.g., a rapid warm-up is provided. When a rapid warm-up is started, an acceptable cell-voltage value setting part sets a acceptable lowest-cell-voltage value in accordance with the operation state of a fuel cell. Meanwhile, a target cell-voltage value setting part sets an initial value for a target lowest-cell-voltage value. The target cell-voltage value setting part then compares a lowest cell voltage detected by a cell monitor with the set target lowest-cell-voltage value, and judges whether or not the lowest cell voltage is near the target lowest-cell-voltage value continuously for a given time period. If the result of the judgment is positive, the target cell-voltage value setting part updates the target lowest-cell-voltage value with a value obtained by decreasing the target lowest-cell-voltage value only by an update width.
    • 提供了即使在通过例如快速预热来降低电池电压时也能够执行适当的电流限制的燃料电池系统。 当快速预热开始时,可​​接受的电池电压值设定部分根据燃料电池的运行状态设定可接受的最低电池电压值。 同时,目标电池电压值设定部设定目标最低电池电压值的初始值。 目标单元电压值设定部分将由单元监视器检测的最低单元电压与设定的目标最小单元电压值进行比较,并且连续地判断最低单元电压是否接近目标最小单元电压值 在给定的时间段内 如果判断结果是肯定的,则目标单元电压值设定部分用目标最小单元电压值减去更新宽度获得的值来更新目标最小单元电压值。
    • 79. 发明申请
    • FUEL CELL SYSTEM
    • 燃油电池系统
    • US20100266916A1
    • 2010-10-21
    • US12810131
    • 2008-12-18
    • Hiroyuki ImanishiKota ManabeYoshiaki NaganumaTomoya Ogawa
    • Hiroyuki ImanishiKota ManabeYoshiaki NaganumaTomoya Ogawa
    • H01M8/04
    • H01M8/0432H01M8/04268H01M8/04559H01M8/04567H01M8/04589H01M8/04597H01M8/0488H01M8/04888H01M8/0491H01M8/04917H01M10/44H01M10/48H01M2008/1095H01M2250/20Y02T90/32
    • Provided is a fuel cell system capable of making a shift of an operation state while optically controlling an output voltage and an output voltage of a fuel cell. When an ECU judges that the time when an operation should be shifted from a low-efficiency operation to a normal operation has come, the ECU performs, as preprocessing prior to a shift to a ΔV control, processing of increasing an oxidant gas supplied to a fuel cell stack by a predetermined amount. After this processing, the ECU detects output power, calculates an output power deviation, and then compares the output power deviation with a set deviation threshold. When the output power deviation exceeds the deviation threshold, the ECU carries out the ΔV control, and then carries out an I-V control. Meanwhile, when the output power deviation does not exceed the deviation threshold, the ECU judges that the time when the ΔV control is carried out has not come yet, and automatically starts the I-V control without carrying out the ΔV control.
    • 提供一种燃料电池系统,其能够在光学地控制燃料电池的输出电压和输出电压的同时进行运转状态的偏移。 当ECU判断出操作从低效运转到正常运转的时间到来时,ECU作为在转换到“D”控制之前的预处理,进行增加供给的氧化剂气体的处理 到燃料电池堆的预定量。 在该处理之后,ECU检测输出功率,计算输出功率偏差,然后将输出功率偏差与设定的偏差阈值进行比较。 当输出功率偏差超过偏差阈值时,ECU执行&Dgr。V控制,然后执行I-V控制。 同时,当输出功率偏差不超过偏差阈值时,ECU判断进行&Dgr V控制的时间尚未到,并且不执行&Dgr V控制,自动启动I-V控制。