METHOD FOR DETECTING FUSE DISCONNECTION OF DC-DC CONVERTER

• Main Authors: KANG, GUN SOO, LEE, KI JONG
• Format: Patent
• Language: English; Korean
• Published: 15.05.2014
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The present invention relates to a method for detecting the fuse disconnection of a DC-DC converter and has a main purpose for providing a method for detecting the input fuse disconnection of a low power DC-DC converter (LDC) without adding extra hardware in an environmentally-friendly vehicle such as an electric vehicle or a hybrid vehicle. To achieve the purpose, the present invention provides the method for detecting the fuse disconnection of the DC-DC convertor comprising: the steps of comparing setting voltages with input voltages inputted through an input end of the low power DC-DC convertor in the ON-state of a main relay for connecting a high-voltage battery and IG ON; of confirming the ON-state of the main relay; of confirming whether inverter input capacitor voltages are existed in a normal voltage range; and of determining the disconnection of the input fuse when the inverter input capacitor voltages are existed in the normal voltage range and the input voltages are under the setting voltages in the ON-state of the main relay.