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    • 1. 发明申请
    • METHOD AND SYSTEM FOR DETECTING LEAKS IN COOLING UNITS OF A FUEL CELL STACK
    • 方法和系统有无渗漏。在一个冷却单元燃料电池堆检测
    • WO2014146848A2
    • 2014-09-25
    • PCT/EP2014053200
    • 2014-02-19
    • SIEMENS AG
    • BRANDT TORSTENBRAUNECKER MICHAELKARBACHER STEFANLOCHNER TORSTENSTÜHLER WALTER
    • H01M8/02
    • H01M8/04664H01M8/0232H01M8/0267H01M8/04231H01M8/04552H01M8/04671H01M8/04753H01M8/04955H01M2008/1095
    • The invention relates to a method for detecting leaks in cooling units (2a, 2b) of a fuel cell stack (3) arranged between electrolyte-electrode units (10a, 10b, 10c), which method detects leakages in cooling units in a fuel cell stack in a simple and reliable manner. Each cooling unit (2a, 2b) is formed from two plates touching at contact surfaces. Between the two plates (4, 6), a coolant chamber (8) for a coolant is formed, and between each plate (4, 6) and the respective adjacent electrolyte-electrode unit (10a, 10b, 10c), a gas chamber (12, 14) for a gas is formed, wherein in a first step, the oxygen supply to the gas chambers (12, 14) is interrupted, and in a second step, the hydrogen supply to the gas chambers (12, 14) is interrupted. Air is introduced into the coolant chamber (8), and a voltage between two cooling units (2a, 2b) is measured, wherein the sign of the measured voltage with regard to localizing the leak is taken into account.
    • 在燃料电池堆的冷却单元的泄漏可以通过在电解质电极组件之间的泄漏的检测器(10A,10B,10C)的方法的装置可以容易地和可靠地确定布置冷却单元(2A,2B)的燃料电池堆(3),每个冷却单元(2A,2B)的 2在接触表面接触板形成,其特征在于,在两个板之间(4,6),一个冷却剂空间(8)用于冷却剂,并且每个板(4,6)和相邻的电解质电极组件之间(10A,10B,10C) 的气体空间(12,14)被形成为一种气体,其特征在于:在第一步骤中,在第二步骤中的氧气和供给,氢气的供应到气体空间(12,14)被中断, - 在空气中被传递到冷却剂的空间(8) 和两个冷却单元之间的电压(2A,2B)进行测量,其中所测量的电压相对于符号到泄漏约本地化 是ücksichtigt。