Method and device for controlling output of low voltage DC-DC converter in environmentally friendly vehicle

摘要

A method of controlling an output of a low voltage DC converter (LDC) of an environmentally friendly vehicle includes the steps of: determining whether or not the controller drives the environmentally friendly vehicle in a regenerative braking mode; and when the environmentally friendly vehicle is judged to run in a regenerative braking mode, A first slope signal for determining an upward slope of the output voltage of the low voltage DC converter for charging or discharging an auxiliary battery that supplies electric power to the electric field load using a high voltage battery for driving the environmentally friendly vehicle as a first slope is referred to as a low voltage direct current Voltage converter when the eco-friendly vehicle is judged not to run in the regenerative braking mode and the eco-friendly vehicle is judged to be using the high-electric-charge load in the electric-field load, The up-slope of the output voltage of the DC-DC converter with respect to time And a second slope signal having a second slope having a slope smaller than the first slope is transmitted to the low voltage DC converter to increase an output voltage of the low voltage DC converter.