Charging/discharging device having function of balancing super capacitor and control method thereof

摘要

An embodiment of the present invention relates to a charging / discharging device having a balancing function of a supercapacitor and a control method thereof, and a technical problem to be solved is to use a charging / discharging circuit of a supercapacitor for cell balancing for cell balancing of a supercapacitor And to provide a control method therefor. To this end, the present invention provides a transformer comprising: a transformer having first and second windings; A power supply side capacitor connected in parallel to the first winding of the transformer via a first switch; A supercapacitor connected in parallel to a second winding of the transformer via a second switch; And when the voltage of the supercapacitor is lower than the reference voltage, the first and second switches are controlled so that the supercapacitor is charged by the supply-side capacitor. When the supercapacitor voltage is higher than the reference voltage, the supercapacitor discharges And a controller for controlling the first and second switches so as to perform a discharge mode, and a control method therefor, which has a balancing function of a supercapacitor.