POWER SUPPLY DEVICE FOR ELECTRIC VEHICLE

摘要

An ECU (80) of an electric vehicle (100) supplies a target rotation speed RT having a value corresponding to the temperature TB of a main battery (10) to a cooler (15), controls a main DC/DC converter (60) such that the SOC of an auxiliary battery (70) is in a predetermined range SOCL to SOCH less than 100% when a cooling fan in the cooler (15) is driven at the target rotation speed (RT), and controls the main DC/DC converter (60) such that the SOC of the auxiliary battery (70) is 100% when the cooling fan is not driven at the target rotation speed (RT).