Toyota Jidosha Kabushiki Kaisha

Takeshi Aridome

Tomoya Ono

Koichi Kojima

Akito Motohira

Yuya Aoki

Shingo Yumoto

An ECU included in a vehicle performs a first charging control when a minimum output voltage of a direct-current (DC) charger obtained through an information exchange process is less than or equal to a lower limit charging voltage for a power storage device, and performs a second charging control when the minimum output voltage is higher than the lower limit charging voltage of the power storage device. In the second charging control, initially, the ECU electrically connects a pre-charge circuit to a charging path from the DC charger to the power storage device, starts DC charging, and checks a voltage that is actually applied from the DC charger to the vehicle. If a voltage applied from the DC charger to the vehicle is a value corresponding to the voltage of the power storage device, the ECU permits the DC charging and performs the first charging control.

Vehicle charging system

An electrified vehicle includes a system main relay attached to an electric power line for motive power and a charging relay attached to a charging electric power line through which a portion of the electric power line for motive power positioned between the system main relay and a drive circuit and a vehicle-side connection portion connected to a station-side connection portion of a direct current charging station are connected to each other. When the vehicle-side connection portion and the station-side connection portion are disconnected from each other while an electric storage device is being charged with electric power from the direct current charging station, diagnosis about double-pole welding abnormality of the charging relay is performed after the charging relay is turned off with the system main relay being in a turned-on state and the system main relay is turned off after the diagnosis.

Electrified vehicle

A motor-driven vehicle includes a system main relay that is attached to a running electric power line connecting a power storage device to a drive circuit, a capacitor that is attached to the running electric power line between the system main relay and the drive circuit, and a charging relay that is attached to a charging electric power line connecting a vehicle-side connector to the running electric power line between the system main relay and the drive circuit. When a stand-side connector is disconnected from the vehicle-side connector while the power storage device is being charged with electric power from a direct-current charging stand, the charging relay and the system main relay are turned off, a two-pole welding abnormality of the charging relay is diagnosed using a voltage of the capacitor, and then the capacitor is discharged.

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Toyota, Japan

Takeshi Aridome