POWER SUPPLY SYSTEM FOR ELECTRIC VEHICLE

摘要

A power control unit (20) executes a power conversion between a main battery (10) and a motor generator (30) in order to control the drive of the motor generator (30) during a vehicle travel. A charger (200) for external charging has a DC/DC conversion unit (210) that executes a bidirectional power conversion between the main battery (10) and first power lines (157p, 157g). The first power lines (157p, 157g) are electrically connected to second power lines (154p, 154g) in the power control unit (20). During a vehicle travel, a control device (80) operates the DC/DC conversion unit (210) so that the output voltage of the main battery (10) is converted in DC voltage and output to the first power lines (157p, 157g) according to the input/output power between the main battery (10) and the motor generator (30).