| 摘要 |
A method and a circuit for improving efficiency of a battery operating an electric driving unit are provided to increase operation reliability of the electric driving unit by boosting and charging a voltage as high as a driving voltage of the electric driving unit using a PWM signal of a control device. A circuit for improving efficiency of a battery operating an electric driving unit(20) includes a battery(10) and an input unit, and a control unit, a boosting control part(100), and a switch(200). The control unit waits for a signal from the input unit and generates a PWM(Pulse Width Modulation) signal and a switching signal according to a signal and a control order of the input unit. The boosting control part adds the PWM signal outputted from the control unit to a real output voltage of the battery and stores the result value in a condenser for preliminarily charging so that the value is equal to a driving voltage of the electric driving unit. The switch provides the voltage charged in the condenser for preliminarily charging of the boosting control part for the electric driving unit. The switch changes polarity of the charged voltage and is controlled by the control unit.
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