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2. 发明授权

US3997834A State-of-charge indicator for zinc-mercuric oxide primary cells 失效
标题翻译：锌 - 汞氧化物原代细胞的电荷状态指示剂
公开(公告)号：US3997834A
公开(公告)日：1976-12-14
申请号：US623873
申请日：1975-10-20
申请人： John J. Winter , James T. Breslin , Raymond L. Ross , Frederick Rothwarf
发明人： John J. Winter , James T. Breslin , Raymond L. Ross , Frederick Rothwarf
IPC分类号： G01R31/36 , H01M6/50 , G01N27/42
CPC分类号： H01M6/50 , G01R31/3665
摘要： A method for determining the state-of-charge for zinc mercuric oxide type primary cells. I-V curves of the cells are plotted and the nearly constant slopes of these I-V curves above 75mA are measured graphically. These slopes are used to define effective differential DC resistance values (.DELTA.V/.DELTA.I).sub.75mA which have a linear relationship to charge expended, Q(A-h), which is graphically produced by plotting (.DELTA.V/.DELTA.I).sub.75mA versus Q(A-h). This relationship is used as a basis for a state-of-charge indicator to determine the remaining charge to about 12%. One can also subtract the internal resistance of the cell (measured with an a-c bridge technique) from (.DELTA.V/.DELTA.I).sub.75mA and obtain a new parameter, R.sub.p, which is related to the polarization resistance of the cell. The maximum uncertainty can be reduced to less than 10% if the linear curve is produced by plotting polarization resistance R.sub.p of the cell versus the charge expended Q(A-h). More significantly, the polarization based state-of-charge graph is linear out to 100% of discharge and is applicable to cells discharged at abnormally high current.
摘要翻译：一种用于测定锌氧化锌型原代细胞的充电状态的方法。绘制单元的I-V曲线，并以图形方式测量高于75mA的这些I-V曲线的几乎恒定的斜率。这些斜率用于定义有效的差分直流电阻值（DELTA V / DELTA I）75mA，其与充电消耗的线性关系Q（Ah），其通过绘制（DELTA V / DELTA I）75mA与Q 啊）。该关系用作充电状态指标的基础，以将剩余电量确定为约12％。还可以从（DELTA V / DELTA I）75mA中减去电池的内阻（用a-c桥技术测量），并获得与电池的极化电阻相关的新参数Rp。如果通过绘制电池的极化电阻Rp与电荷消耗的Q（A-h）产生线性曲线，则最大不确定度可以降低到小于10％。更显着的是，基于极化的充电状态图线性化到100％的放电，适用于在异常高电流下放电的电池。

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