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    • 12. 发明公开
    • 연료전지 스택의 주입 전류 생성 방법
    • 用于产生燃料电池堆的注入电流的方法
    • KR1020140080895A
    • 2014-07-01
    • KR1020120149916
    • 2012-12-20
    • 현대오트론 주식회사
    • 박현석김억수강선두
    • G01R31/36G01R27/08H01M8/04
    • H01M8/04679H01M8/04529H01M8/04559H01M8/04649H01M2008/1095Y02E60/50
    • According to an embodiment of the present invention, a method for generating an injected current of a fuel cell stack comprises the steps of: generating a frequency current in which a first frequency current and a second frequency current are synthesized; and applying the frequency current to the fuel cell stack. Each of the first and the second frequency currents are used for calculating at least one of THD (total harmonic distortion) or impedance. Therefore, the present invention does not separately generate alternating currents for calculating THD and impedance. The frequency current, which is synthesized with the alternating currents for calculating both THD and impedance, is applied to the fuel cell stack, thereby reducing costs and size due to simplified hardware.
    • 根据本发明的实施例,一种用于产生燃料电池堆的注入电流的方法包括以下步骤:产生合成第一频率电流和第二频率电流的频率电流; 以及将所述频率电流施加到所述燃料电池堆。 第一和第二频率电流中的每一个用于计算THD(总谐波失真)或阻抗中的至少一个。 因此,本发明不分开产生用于计算THD和阻抗的交流电流。 用用于计算THD和阻抗的交流电流合成的频率电流被施加到燃料电池堆,从而由于简化的硬件而降低了成本和尺寸。
    • 15. 发明公开
    • 연료 전지 시스템
    • 燃油电池系统
    • KR1020170000336A
    • 2017-01-02
    • KR1020160074974
    • 2016-06-16
    • 도요타지도샤가부시키가이샤
    • 오가와도모히로마루오츠요시도이다마사시나가누마요시아키
    • H01M8/04828H01M8/04537H01M8/0438H01M8/1018
    • H01M8/04529H01M8/04291H01M8/04358H01M8/04589H01M8/04649H01M8/04753H01M2008/1095
    • 전해질막의국소적건조가발생하고있는경우에있어서, 연료전지의함수량의추정정밀도를향상시키는기술을제공한다. 연료전지시스템에있어서, 함수량추정부는, 전해질막의국소적건조에대응하는제1 조건이성립된후, 전해질막의국소적건조의해소에대응하는제2 조건이성립될때까지의동안에, 연료전지의임피던스에기초하여연료전지의함수량을추정하는제1 함수량추정처리대신에, 출력전류값에기초하여연료전지의함수량을추정하는제2 함수량추정처리를실행하고, 제1 조건은, 산화가스스토이키비가소정의역치이상이며, 또한소정의역치이상으로되고나서제1 경과시간을경과한것이고, 제2 조건은, 제1 조건이성립된시점부터제2 경과시간까지의출력전류적산값이적산값역치이상인것, 또는산화가스스토이키비가소정의역치미만이며, 또한소정의역치미만으로되고나서제3 경과시간을경과한것이다.
    • 本发明的目的是提供一种在电解质膜的局部干燥发生时提高燃料电池的含水量的估计精度的技术。 在燃料电池系统中,在满足表示发生电解质膜的局部干燥的第一状态满足表示电解质膜的局部干燥的第二状态的满足之后,水含量估计器进行第二含水量估计处理, 基于燃料电池的输出电流值来估计燃料电池的含水量,代替基于燃料电池的阻抗来估计燃料电池的含水量的第一含水量估计处理。 第一条件是氧化剂化学计量比等于或高于预定参考值,并且从氧化气体化学计量比变为等于或高于预定参考值开始经过第一经过时间。 第二个条件是,由于满足第一条件后的第二经过时间的输出电流值的积累的累积电流值等于或大于累积电流值的基准值或氧化剂气体化学计量比低于 从氧化剂气体化学计量比变得低于规定的基准值以来,经过了规定的基准值,经过了第3次的经过时间。
    • 19. 发明公开
    • 연료전지 시스템의 운전방법
    • 燃料电池系统运行方法
    • KR1020140086692A
    • 2014-07-08
    • KR1020120157490
    • 2012-12-28
    • 현대자동차주식회사
    • 손익제
    • G01R31/36H01M8/04
    • H01M8/04552H01M8/04388H01M8/04492H01M8/04529H01M8/0491H01M2008/1095Y02E60/50
    • A fuel cell system operation method according to an embodiment of the present invention includes the steps of calculating voltages generated from each cell of a stack and determining whether the voltages satisfy a voltage stability condition; determining whether the voltages satisfy a water balance condition and a hydrogen supply condition if the voltages do not satisfy the voltage stability condition; easing and resetting the voltage stability condition if the voltages satisfy the water balance condition and the hydrogen supply condition; determining whether the voltages generated from each cell of the stack satisfy the reset voltage stability condition; and operating the stack normally if the voltages satisfy the reset voltage stability condition. Accordingly, even when voltage drop occurs in a specific cell of a stack, if hydrogen is supplied stably and water balance is maintained stably, a stack operates normally. The operation power of the stack can be reduced and the generation efficiency of a fuel cell can be improved.
    • 根据本发明实施例的燃料电池系统操作方法包括以下步骤:计算从堆叠的每个电池产生的电压,并确定电压是否满足电压稳定性条件; 如果电压不满足电压稳定条件,则确定电压是否满足水平衡状态和氢气供应条件; 如果电压满足水平衡条件和供氢条件,则放宽和重置电压稳定条件; 确定从堆叠的每个单元产生的电压是否满足复位电压稳定性条件; 并且如果电压满足复位电压稳定性条件,则正常地操作堆叠。 因此,即使在堆叠的特定电池中发生电压下降,如果稳定地供给氢并且稳定地保持水的平衡,则堆叠正常工作。 能够降低堆叠的动作功率,提高燃料电池的发电效率。