Vehicle and power supply system

摘要

A vehicle includes a charging unit receiving electric power supplied from an external power supply through a power feeding cable connected to an inlet for charging a power storage device; a discharging unit for supplying electric power from the power storage device to the power feeding cable through the inlet; a discharge relay; and a charge relay. When ending a discharging operation, an ECU outputs an opening instruction to the discharge relay and determines based on the state of a power line during output of the opening instruction whether the discharge relay is welded or not. When starting the discharging operation, the ECU outputs a closing instruction to the discharge relay and does not determine during output of the closing instruction whether the discharge relay is welded or not.

主权项

1. A vehicle comprising:
a rechargeable power storage device; a power line that transmits electric power to and from the power storage device; a switching device interposed in the power line and configured to allow electrical connection and disconnection of the power storage device; a control device that is configured to determine, when transmission of the electric power to or from the power storage device ends, whether the switching device is welded or not, and that is configured not to determine, when the transmission of the electric power to or from the power storage device starts, whether the switching device is welded or not;
a charging unit that receives electric power supplied from the external power supply through a cable connected to the connection unit for charging the power storage device; anda discharging unit that supplies electric power from the power storage device to the cable through the connection unit, whereinthe switching device includes:
a first switching unit interposed in a first power line connecting the discharging unit and the connection unit; andsecond switching unit interposed in a second power line connecting the power storage device and the charging unit,the vehicle is configured to be capable of switching between a charging operation of charging the power storage device with electric power from an external power supply, and a discharging operation of supplying electric power from the power storage device to an external load; andwhen the charging operation or the discharging operation ends, the control device outputs an opening instruction to the switching device, and determines whether the switching device is welded or not based on a state of the power line during output of the opening instruction.