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    • 30. 发明授权
    • Electronic battery tester with tailored compensation for low state-of
charge
    • 电子电池测试仪定制补偿低电荷状态
    • US5821756A
    • 1998-10-13
    • US721618
    • 1996-09-26
    • Stephen J. McShaneKevin I. BertnessKeith S. Champlin
    • Stephen J. McShaneKevin I. BertnessKeith S. Champlin
    • G01R31/36G01N27/416
    • G01R31/3662G01R31/3668
    • Various embodiments of an improved electronic device for testing or monitoring storage batteries that may be only partially charged are disclosed. The device determines the battery's small-signal dynamic conductance in order to provide either a proportional numerical readout, displayed in appropriate battery measuring units, or a corresponding qualitative assessment of the battery's relative condition based upon its dynamic conductance and electrical rating. The device also determines the battery's terminal voltage in an essentially unloaded condition and utilizes this information to automatically correct the measured dynamic conductance. The automatic correction is performed by the electronic device using information or functions which are tailored for the particular type of battery being tested. By virtue of this automatic correction, the quantitative or qualitative information displayed to the user conforms with that of a fully-charged battery even though the battery may, in actual fact, be only partially charged. If the battery's state-of-charge is too low for an accurate assessment to be made, no information is displayed. Instead, an indication is made to the user that the battery must be recharged before testing.
    • 公开了用于测试或监视可以仅部分充电的蓄电池的改进的电子设备的各种实施例。 该装置确定电池的小信号动态电导,以便提供在适当的电池测量单元中显示的比例数字读数,或者根据其动态电导和电气额定值对电池的相对状况进行相应的定性评估。 该装置还基本上无负载状态确定电池的端子电压,并利用该信息自动校正测得的动态电导。 电子设备使用为被测试的特定类型的电池定制的信息或功能来执行自动校正。 通过这种自动校正,向用户显示的定量或定性信息与完全充电的电池的信息一致,即使实际上电池可能仅部分充电。 如果电池的充电状态太低,无法进行准确的评估,则不会显示任何信息。 相反,向用户指示在测试之前必须对电池进行充电。