Patent ID: 9174547
Filing Date: 2015-11-03
Classification: B60L,H02J,Y02T

Abstract:
1. An electric vehicle which includes a high-voltage battery for driving the electric vehicle, a plurality of loads, and an auxiliary battery for supplying drive power to the plurality of loads, comprising: a first voltage detection unit for detecting an output voltage of the auxiliary battery; a converter for converting a voltage of the high-voltage battery into a voltage needed for the loads through pulse-width modulation (PWM) switching; a power relay assembly (PRA) including a plurality of relays, configured to be switched in a manner that energy of the high-voltage battery is supplied to the converter according to whether the relays are operated; and a vehicle control module (VCM) for controlling driving of the PRA, wherein the converter includes a converter controller for transmitting, according to a variation of the output voltage of the auxiliary battery, a PRA drive command signal requesting driving of the PRA to the VCM to charge the auxiliary battery.