System and method for controlling energy under interlock of eco-friendly vehicle

摘要

A system and method for controlling energy of an eco-friendly vehicle are provided and include turning off, by a controller, a main relay in response to sensing interlock by means of a detection circuit and charging a secondary batter by discharging voltage of a capacitor in an inverter to the secondary battery, under control of voltage output from a low voltage DC converter after the main relay is turned off. In addition, the controller is configured to discharge DC-link voltage to a driving motor by operating the inverter after charging the second battery.

主权项

1. A method for controlling energy under interlock of a vehicle, the method comprising:
turning off, by a controller, a main relay when sensing interlock by a detection circuit, wherein the interlock occurs when a connector connected to a junction box is separated from the junction box while an engine is operating and the junction box and a power conversion system share a high-voltage power source via the connector; charging, by the controller, a secondary battery by discharging voltage of a capacitor in an inverter to the secondary battery, under control of voltage output from a low voltage direct current (DC) converter after the main relay is turned off; and discharging, by the controller, DC-link voltage to a driving motor by operating the inverter after charging the secondary battery.