DC-DC METHOD FOR CONTROLLING DC-DC CONVERTER OF HYBRID ELECTRIC VEHICLE

摘要

The present invention relates to a method for controlling a DC-DC converter of a hybrid vehicle capable of removing a precharge circuit in an existing battery system. The method comprises the steps of: when driving the hybrid vehicle, driving the DC-DC converter in a boost mode by a control part in order to precharge a DC link capacitor coupled in parallel between the DC-DC converter connected to a first battery system; and in a state in which the DC-DC converter is driven in the boost mode to precharge the DC link capacitor, applying power supply of the first battery system to the DC-DC converter, while switching the DC-DC converter to a buck mode with the control part.