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    • 29. 发明公开
    • Method of measuring remaining capacity of a storage cell
    • Verfahren zur Messung der verbleibenden Ladung einer Speicherzelle。
    • EP0516336A2
    • 1992-12-02
    • EP92304594.2
    • 1992-05-20
    • AT&T Corp.
    • Fang, Wei-Chou
    • G01R31/36
    • G01R31/3668G01R31/3662Y10S320/18
    • The remaining capacity of a storage cell, particularly a valve regulated lead-acid cell, is determined by measuring its impedance at typically two or three relatively low frequencies f, e.g, frequencies in the approximate range of 0.01 to 1.0 Hz. In one scheme, the imaginary part Z˝ of the complex impedance Z(=Z′+ jZ˝) is plotted vs. f -1/2 , whereby the intercept Z ˝ o (at f -1/2 =0) of the best-fitting straight line of the plot is a measure of the cell's remaining capacity. In another scheme, the slope (dZ˝/dZ′) of a plot of the imaginary part Z˝ vs. real part Z′ of the complex impedance Z, again as measured at such relatively low frequencies f, is a measure of the cell's remaining capacity.
    • 存储单元,特别是阀门调节铅酸电池的剩余容量通过以典型的两个或三个较低频率f(例如,在0.01至1.0Hz的近似范围内的频率)测量其阻抗来确定。 在一个方案中,复阻抗Z(= Z min + jZ sec)的虚部Z sec绘制为相对于f <-1 / 2>,由此截距Z sec _o(在f <-1 / 2> = 0)的最佳拟合直线是衡量单元的剩余容量。 在另一种方案中,虚部Z sec与复阻抗Z的实部Z min的曲线的斜率(dZ sec / dZ min)再次如在这样相对较低的频率f处测量的是单元格 剩余容量