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    • 4. 发明授权
    • Device for detecting residual capacity of battery
    • 用于检测电池剩余容量的装置
    • US4849700A
    • 1989-07-18
    • US168233
    • 1988-03-15
    • Shizuo MoriokaYuichi Saitoh
    • Shizuo MoriokaYuichi Saitoh
    • G01R31/36G01N27/46
    • G01R31/3662
    • A device for detecting the residual capacity of a battery comprises a battery current measuring circuit for measuring battery current, a battery voltage measuring circuit for measuring battery voltage, a converting circuit for converting the measured current into a voltage value, based on the internal impedance of the battery, and a comparator circuit for comparing the conversion voltage value with the measured voltage. When the measured voltage is smaller than the conversion voltage value, the comparator circuit operates a battery residual-capacity detect signal indicating that the residual capacity of the battery is small.
    • 用于检测电池的剩余容量的装置包括:用于测量电池电流的电池电流测量电路,用于测量电池电压的电池电压测量电路,用于将测量的电流转换为电压值的转换电路,基于内部阻抗 电池,以及用于将转换电压值与测量电压进行比较的比较器电路。 当测量电压小于转换电压值时,比较器电路操作指示电池的剩余容量小的电池剩余容量检测信号。