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    • 51. 发明授权
    • Fuel cell system
    • 燃料电池系统
    • US08691461B2
    • 2014-04-08
    • US13390005
    • 2009-08-21
    • Hiromi TanakaYoshiaki NaganumaOsamu Yumita
    • Hiromi TanakaYoshiaki NaganumaOsamu Yumita
    • H01M8/04
    • H01M8/04179H01M8/04097H01M8/04253H01M8/04268H01M8/04559H01M8/04753H01M8/04783
    • When starting operation of a fuel cell below the freezing point, a fuel cell system adjusts the open degree of a hydrogen pressure adjusting valve, introduces hydrogen to a hydrogen entrance of the fuel cell so as to make the total pressure of the hydrogen entrance a first pressure, and starts a hydrogen circulation pump. If at least one of the cell voltages acquired by a cell voltmeter is below a predetermined voltage, the system determines that clogging is caused in a hydrogen flow channel in the fuel cell. When it is determined that clogging is present, the open degree of the pressure adjusting valve is adjusted and hydrogen is introduced to the hydrogen entrance so that the total pressure of the hydrogen entrance is a second pressure which is higher than the first pressure. Then, the hydrogen circulation pump is stopped and the fuel cell is warmed up to dissolve the clogging of the hydrogen flow channel. Thus, it is possible to suppress degradation of the fuel cell upon an operation start below the freezing point.
    • 当燃料电池低于冰点运行时,燃料电池系统调节氢气压力调节阀的开度,将氢气引入燃料电池的氢气入口,使氢气入口的总压为第一 压力,启动氢循环泵。 如果由电池电压计获取的电池电压中的至少一个低于预定电压,则系统确定在燃料电池中的氢气流通道中引起堵塞。 当确定存在堵塞时,调节压力调节阀的开度,并将氢气引入氢入口,使得氢入口的总压力高于第一压力的第二压力。 然后,氢循环泵停止,并且燃料电池被加热以溶解氢流动通道的堵塞。 因此,可以在低于冰点的操作开始时抑制燃料电池的劣化。
    • 52. 发明授权
    • Fuel cell system and power supply control method
    • 燃料电池系统和电源控制方法
    • US08580449B2
    • 2013-11-12
    • US12594526
    • 2008-04-18
    • Yoshiaki Naganuma
    • Yoshiaki Naganuma
    • H01M8/04
    • H01M8/04873H01M8/04089H01M8/04231H01M8/04358H01M8/04365H01M8/04395H01M8/04492H01M8/04649H01M8/04753H01M8/04865H01M8/04902H01M8/04992
    • In order to determine the air stoichiometric ratio without using multidimensional mapping, a fuel cell system of the invention computes a command current value and command voltage value in a fuel cell during low-efficiency electrical power generation based on the required electrical power, estimates a reference voltage of the fuel cell from the command voltage value and the water temperature when the command current value is taken as a reference current, determines the difference between the reference voltage thus obtained and the command voltage value as an air concentration overvoltage target value, computes the air stoichiometric ratio based on the air concentration overvoltage target value, computes the air amount during low-efficiency electrical power generation based on the air stoichiometric ratio, and controls the amount of air supplied to the fuel cell according to the air amount thus computed.
    • 为了在不使用多维映射的情况下确定空气化学计量比,本发明的燃料电池系统基于所需电力在低效率发电期间计算燃料电池中的指令电流值和指令电压值,估计参考 将指令电流值作为基准电流时的指令电压值和水温度的燃料电池的电压确定由此获得的参考电压与作为空气浓度过电压目标值的指令电压值之间的差,计算出 基于空气浓度过电压目标值的空气化学计量比,基于空气化学计量比计算低效率发电期间的空气量,并根据这样计算出的空气量来控制供给燃料电池的空气量。
    • 55. 发明申请
    • FUEL CELL SYSTEM
    • 燃油电池系统
    • US20120015270A1
    • 2012-01-19
    • US13259841
    • 2009-07-30
    • Yoshiaki Naganuma
    • Yoshiaki Naganuma
    • H01M8/04
    • H01M8/04753H01M8/0432H01M8/04395H01M8/04455H01M8/04559H01M8/04589H01M8/0488H01M8/04888Y02E60/50
    • Provided is a fuel cell system including: a fuel cell which generates power by an electrochemical reaction between an oxidant gas supplied to an oxidant gas flow path and a fuel gas supplied to a fuel gas flow path; and a controller which adjusts an amount of the oxidant gas supplied to the fuel cell and a voltage of the fuel cell. The controller has an obstruction degree determining unit which determines a degree of obstruction of the oxidant gas flow path based on a stoichiometric ratio of the oxidant gas and the voltage of the fuel cell during a low-efficiency operation in which the stoichiometric ratio of the oxidant gas is reduced from the stoichiometric ratio of the oxidant gas during a normal operation and heat discharged from the fuel cell is increased from that during the normal operation. This improves stability of the low-efficiency operation of the fuel cell system.
    • 提供一种燃料电池系统,包括:燃料电池,其通过供给到氧化剂气体流路的氧化剂气体与供给到燃料气体流路的燃料气体之间的电化学反应而发电; 以及控制器,其调节供给到燃料电池的氧化剂气体的量和燃料电池的电压。 控制器具有障碍度确定单元,其在低效率操作期间,基于氧化剂气体的化学计量比和燃料电池的电压来确定氧化剂气体流路的阻塞程度,其中氧化剂气体的化学计量比 在正常操作期间,气体从氧化剂气体的化学计量比减少,并且从燃料电池排放的热量从正常运行期间增加。 这提高了燃料电池系统的低效率操作的稳定性。
    • 56. 发明申请
    • Vehicle
    • 车辆
    • US20080006461A1
    • 2008-01-10
    • US11794090
    • 2006-01-06
    • Yoshiaki Naganuma
    • Yoshiaki Naganuma
    • B60K15/067B60H1/00B62D31/02B60K11/04
    • B60H1/00371B60H1/00428Y02T10/88
    • A hydrogen tank is placed substantially at a middle portion in a fore/aft direction on a roof of a fuel cell-equipped bus, an air conditioning unit is placed on the front of the hydrogen tank and a radiator is placed on the rear thereof, and these components are covered with a roof cover. An outside air guiding portion that guides outside air to an outside air introducing opening of the air conditioning unit is provided in the middle of an upward inclined surface in a front portion of the roof cover and above a front portion of the air conditioning unit, and a partition wall portion that separates the hydrogen tank from the air conditioning unit is provided in the periphery of the air conditioning unit on the side of the hydrogen tank. Thus, hydrogen leaking from the hydrogen tank flows rearward by running air, and can be prevented from entering an occupant compartment through the outside air introducing opening of the air conditioning unit.
    • 一个氢罐基本上放置在燃料电池配备的总线的顶部上的前后方向的中间部分,空调单元放置在氢罐的前面,散热器放置在其后部, 并且这些部件被屋顶盖覆盖。 将外部空气引导到空调单元的外部空气导入口的外部空气引导部分设置在屋顶盖的前部的上部倾斜表面的中部并且位于空调单元的前部之上,并且 在氢罐侧的空调单元的周围设置有将空气调节单元分离的分隔壁部。 因此,从氢罐泄漏的氢气通过运行空气而向后流动,并且能够防止通过空调单元的外部空气导入口进入乘员室。