Apparatus and method for controlling low-voltage DC-to-DC converter of vehicle

• Main Authors: Jang, Hui Sung, Seong, Hyun Wook, Park, Sung Uk, Woo, Dong Gyun
• Format: Patent
• Language: English
• Published: 08.03.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

An apparatus for controlling a low-voltage DC-to-DC converter of a vehicle for converting high-voltage power into low-voltage power may include a signal selector for selecting and outputting one of a charging-oriented voltage command for charging the battery or a preset burst mode voltage command for operation of the low-voltage DC-to-DC converter in a burst mode in which the battery cannot be charged, a battery charge/discharge current limiter for generating a voltage command compensation value for limiting charge current of the battery when the signal selector outputs the charging-oriented voltage command and limiting discharge current of the battery when the signal selector outputs the burst mode voltage command, and a controller for controlling an output voltage of the low-voltage DC-to-DC converter to follow a compensated voltage command generated by applying the voltage command compensation value to the voltage command output by the signal selector.