| 摘要 |
The present invention relates to a method for regularly charging an auxiliary battery for an electric vehicle. The method of the present invention is provided to secure startup performance of a vehicle and durability of an auxiliary battery by regularly charging the auxiliary battery while the vehicle is left for a long time. The method for regularly charging an auxiliary battery for an electric vehicle includes the processes of calculating an SOC self-discharge rate of an auxiliary battery; setting an LDC output voltage value and a charge time of the auxiliary battery by using the SOC self-discharge rate of the auxiliary battery and information transmitted from an IBS; determining whether an SOC value of a main battery is equal to or greater than a set value; and regularly charging the auxiliary battery by operating an LDC if the SOC value of the main battery is equal to or greater than the set value. |
