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    • 1. 发明授权
    • Fuel cell system
    • 燃料电池系统
    • US08486577B2
    • 2013-07-16
    • US11994659
    • 2006-07-26
    • Keigo SuematsuTatsuaki YokoyamaKoji KatanoNobuhiro Tomosada
    • Keigo SuematsuTatsuaki YokoyamaKoji KatanoNobuhiro Tomosada
    • H01M8/04
    • H01M8/04089H01M8/04388H01M8/04679H01M8/04753H01M16/006H01M2250/20Y02T90/32
    • In a fuel cell system of the invention, a hydrogen leakage detection process closes a shutoff valve, which shuts off a supply of hydrogen from a hydrogen supply unit into a hydrogen supply flow path, and opens a pressure regulator, which reduces a pressure of hydrogen in the hydrogen supply flow path, so as to keep the hydrogen supply flow path in a state with no pressure regulation and make the fuel cell system in a leakage detectable state. In this leakage detectable state, the hydrogen leakage detection process measures at least one of a pressure and a flow rate as a state quantity of hydrogen in the hydrogen supply flow path that feeds the supply of hydrogen to fuel cells. The hydrogen leakage detection process analyzes a detected behavior of the state quantity in the leakage detectable process and specifies the occurrence of a hydrogen leakage in the downstream of the hydrogen supply unit. This arrangement enables highly accurate detection of a hydrogen leakage in the fuel cell system with the pressure regulator provided in the hydrogen supply flow path.
    • 在本发明的燃料电池系统中,氢泄漏检测过程关闭截止阀,该截止阀将氢气从氢气供应单元供应到氢气供应流路中,并打开压力调节器,其降低氢气压力 在氢供给流路中,为了使氢供给流路保持在没有压力调节的状态,并使燃料电池系统处于泄漏检测状态。 在该泄漏可检测状态下,氢泄漏检测处理将氢气供应流路中的氢气的状态量作为氢供给流向燃料电池供给的压力和流量中的至少一个进行测量。 氢泄漏检测过程分析在泄漏可检测过程中检测到的状态量的行为,并指定在氢气供应单元的下游发生氢泄漏。 这种布置使得能够利用设置在氢气供应流动路径中的压力调节器来高精度地检测燃料电池系统中的氢气泄漏。
    • 3. 发明申请
    • Electrical leakage detecting device for a fuel cell system
    • 一种用于燃料电池系统的漏电检测装置
    • US20090096464A1
    • 2009-04-16
    • US12286935
    • 2008-10-03
    • Hideyuki TanakaShuji HirakataTatsuaki Yokoyama
    • Hideyuki TanakaShuji HirakataTatsuaki Yokoyama
    • G01N27/00
    • H01M8/04656H01M8/04559H01M8/04567H01M8/04649
    • An electrical leakage determining circuit determines the occurrence of electrical leakage at a negative electrode of a fuel cell when a potential difference V between a positive electrode of the fuel cell and ground, which is detected by a potential difference detecting circuit, exceeds a preset potential difference threshold Vth, and determines the occurrence of electrical leakage at the positive electrode of the fuel cell when an insulation resistance R between the positive electrode of the fuel cell and ground, which is detected by a resistance detection circuit, falls below a resistance threshold Rth preset to be equal to or smaller than a resistance value Rw of a coolant. Upon determination of the occurrence of electrical leakage, the electrical leakage determining circuit opens a switching contact provided on a power supply line to interrupt power supply from the fuel cell to various power consumption components.
    • 当电位差检测电路检测到的燃料电池的正电极与接地之间的电位差V超过预设电位差时,漏电判定电路确定在燃料电池的负极处的漏电的发生 阈值Vth,并且当由电阻检测电路检测到的燃料电池的正极和接地之间的绝缘电阻R低于电阻阈值Rth预设值时,确定在燃料电池的正极处的漏电的发生 等于或小于冷却剂的电阻值Rw。 在确定发生漏电的情况下,漏电判定电路断开设置在电源线上的开关触点,以中断从燃料电池向各种功耗成分的供电。
    • 4. 发明申请
    • FUEL CELL SYSTEM
    • 燃油电池系统
    • US20090035612A1
    • 2009-02-05
    • US11994659
    • 2006-07-26
    • Keigo SuematsuTatsuaki YokoyamaKoji KatanoNobuhiro Tomosada
    • Keigo SuematsuTatsuaki YokoyamaKoji KatanoNobuhiro Tomosada
    • H01M8/04
    • H01M8/04089H01M8/04388H01M8/04679H01M8/04753H01M16/006H01M2250/20Y02T90/32
    • In a fuel cell system of the invention, a hydrogen leakage detection process closes a shutoff valve, which shuts off a supply of hydrogen from a hydrogen supply unit into a hydrogen supply flow path, and opens a pressure regulator, which reduces a pressure of hydrogen in the hydrogen supply flow path, so as to keep the hydrogen supply flow path in a state with no pressure regulation and make the fuel cell system in a leakage detectable state. In this leakage detectable state, the hydrogen leakage detection process measures at least one of a pressure and a flow rate as a state quantity of hydrogen in the hydrogen supply flow path that feeds the supply of hydrogen to fuel cells. The hydrogen leakage detection process analyzes a detected behavior of the state quantity in the leakage detectable process and specifies the occurrence of a hydrogen leakage in the downstream of the hydrogen supply unit. This arrangement enables highly accurate detection of a hydrogen leakage in the fuel cell system with the pressure regulator provided in the hydrogen supply flow path.
    • 在本发明的燃料电池系统中,氢泄漏检测过程关闭截止阀,该截止阀将氢气从氢气供应单元供应到氢气供应流路中,并打开压力调节器,其降低氢气压力 在氢供给流路中,为了使氢供给流路保持在没有压力调节的状态,并使燃料电池系统处于泄漏检测状态。 在该泄漏可检测状态下,氢泄漏检测处理将氢气供应流路中的氢气的状态量作为氢供给流向燃料电池供给的压力和流量中的至少一个进行测量。 氢泄漏检测过程分析在泄漏可检测过程中检测到的状态量的行为,并指定在氢气供应单元的下游发生氢泄漏。 这种布置使得能够利用设置在氢气供应流动路径中的压力调节器来高精度地检测燃料电池系统中的氢气泄漏。