BIDIRECTIONAL DC TO DC CONVERTER FOR CHARGING AND DISCHARGING BATTERY AND METHOD FOR CHARGING AND DISCHARGING BATTERY BY USING THE SAME

摘要

A bidirectional DC-DC converter is shown in an embodiment of the invention. The present invention includes: a first switching part switching first voltage applied from a first power supply through an on/off action, which corresponds to a first switching signal by being connected to the first power supply; a converter including a first coil with a tap and a second coil, and converting the switched first voltage applied to the first coil; a second switching part switching second voltage applied from a second power supply through an on/off action, which corresponds to a second switching signal by being connected to the second power supply in series; an inductor connected to the second coil and the second switching part in series, and receiving the voltage difference between the converted first voltage and the switched second voltage; and a control part which measures the second voltage variable under a buck mode or a boost mode, and transfers the first switching signal for applying the switched first voltage to be applied between a first end and a second end of the first coil or the tap and the first end based on the measured second voltage, to the first switching part.