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    • 5. 发明授权
    • Fuel cell and fuel cell system
    • 燃料电池和燃料电池系统
    • US07858248B2
    • 2010-12-28
    • US11345291
    • 2006-02-02
    • Hiroyasu Kudo
    • Hiroyasu Kudo
    • H01M8/04
    • H01M8/04119H01M8/04029H01M8/04358H01M8/04559H01M8/04589H01M8/04723H01M8/04768H01M8/04805H01M8/04902H01M2250/20Y02T90/32
    • A fuel cell system has a fuel cell stack, a controller, and a cooling water channel. The controller executes the control for the temperature of cooling water flowing through the cooling water channel in the fuel cell stack. When judging the necessity to increase an oxygen concentration of air at an area near an air outlet of the air channel, the controller instructs to change a temperature of the cooling water to a condense available temperature at which water vapor involved in the air at the area near the air outlet can be condensed in order to increase the oxygen concentration in the air at the area near the air outlet. As a result, the magnitude of the electric power generated by the fuel cell stack is increased efficiently.
    • 燃料电池系统具有燃料电池堆,控制器和冷却水通道。 控制器执行对流过燃料电池堆中的冷却水通道的冷却水的温度的控制。 当判断为增加空气通道出口附近区域的空气氧浓度的必要性时,控制器指示将冷却水的温度改变为在该区域的空气中涉及的水蒸汽的冷凝可用温度 出口附近可以冷凝,以增加空气出口附近的空气中的氧气浓度。 结果,有效地提高了燃料电池堆产生的电力的大小。
    • 6. 发明授权
    • Insulation failure diagnosis apparatus and method of diagnosing insulation failure
    • 绝缘故障诊断装置及绝缘故障诊断方法
    • US09132733B2
    • 2015-09-15
    • US13554371
    • 2012-07-20
    • Masakazu TagoAtsuyuki HirumaHiroyasu Kudo
    • Masakazu TagoAtsuyuki HirumaHiroyasu Kudo
    • G01R31/08G01R31/02B60L3/00
    • B60L3/0069G01R31/025
    • An insulation failure diagnosis apparatus is provided which diagnoses presence/absence of insulation failure between a body of a vehicle and a connection path to a power supply for a traction unit. The apparatus includes a power converter circuit connected to the power supply and supplying power to an in-vehicle auxiliary unit, an outputting unit outputting an AC signal to the connection path, and a diagnosis unit diagnosing presence/absence of the insulation failure based on a current flowing through the connection path when the AC signal is outputted. The diagnosis unit includes a storage unit storing a determination value for determining the insulation failure or information for setting the determination value. The determination value or the information is obtained by measuring an electrical state quantity of the connection path depending on stray capacitance and is dielectric resistance of the connection path obtained when an AC signal is outputted to the connection path.
    • 提供了一种绝缘故障诊断装置,其诊断车体与绝缘故障之间是否存在与牵引单元的电源的连接路径。 该装置包括连接到电源并向车载辅助单元供电的功率转换器电路,向连接路径输出AC信号的输出单元,以及基于一个诊断单元诊断绝缘故障的存在/不存在的诊断单元 当AC信号输出时流过连接路径的电流。 诊断单元包括存储用于确定绝缘失败的确定值的存储单元或用于设置确定值的信息。 通过根据杂散电容测量连接路径的电气状态量来获得确定值或信息,并且当将AC信号输出到连接路径时获得的连接路径的介质电阻。