POWER SUPPLY DEVICE OF VEHICLE

摘要

A power supply device of a vehicle includes a power storage device that can be charged by receiving power from outside the vehicle, an inlet to which a charging connector of an outside charger is connected, a connector connection detection circuit that detects whether the charging connector is connected to the inlet, a charging relay that connects the power storage device to the inlet, and an ECU that controls the connector connection detection circuit and the charging relay. The ECU performs an operation confirmation to determine whether the connector connection detection circuit is operating normally to detect the connection of the charging connector in the state in which the charging connector is connected to the inlet and the charging relay is in the OFF state.

主权项

1. A power supply device of a vehicle comprising:
a power storage device configured to be charged by receiving power from outside the vehicle; an inlet configured to be connected to a charging connector of a charger outside the vehicle; a connector connection detection circuit configured to detect whether the charging connector is connected to the inlet; a charging relay that connects the power storage device to the inlet; a power line that is connected to the power storage device via the charging relay; a first signal line defining a path through which a current flows to the connector connection detection circuit; a second signal line configured to selectively send a charging permission command and a charging inhibition command from the vehicle to the charger; a ground line configured to make a ground potential of the vehicle equal to a ground potential of the charger; and an electronic control unit configured to control the connector connection detection circuit and the charging relay, wherein the power line, the first signal line, the second signal line, and the ground line are configured to be connected to corresponding lines of the charger when the charging connector is connected to the inlet, while the connector connection detection circuit is not in operation, the second signal line is configured to have a state thereof fixed so that the second signal line indicates a charging inhibition command when the ground line is disconnected, while the connector connection detection circuit is in operation, the second signal line is configured to indicate a charging permission command by a current flowing via the first signal line even when the ground line is disconnected, and the electronic control unit is configured (i) not to perform an operation confirmation of the connector connection detection circuit when the charging relay is in an ON state, and (ii) to perform the operation confirmation of the connector connection detection circuit when the charging relay is in an OFF state regardless of whether the charging permission command or the charging inhibition command is sent through the second signal line, the operation confirmation being performed to confirm whether the connector connection detection circuit is operating normally to detect the connection of the charging connector.