Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Tokai Rika Denki Seisakusho

Koichi Kojima

Shingo Yumoto

Takahiko Mase

Tomoya Ono

Yamato Niwa

Akito Motohira

Takeshi Aridome

Yuya Aoki

Tomohiro Inoue

Takashi Yamana

Toru Ando

Tomokazu Masuda

Eiji Kitano

Mikio Murachi

Takuya Kondo

Keigo Nishimoto

Seiji Okawara

The vehicle includes an inlet configured to be connected to a charging connector provided in a charging station, a lock device configured to switch between a locked state where the charging connector is locked to the inlet and an unlocked state where the charging connector is removable from the inlet, a power storage device configured to be charged with an electric power supplied through the charging connector, and a control device configured to control charging of the power storage device. In a state where the charging connector is connected to the inlet and the power storage device is being charged, the control device stops charging when the lock device is in the unlocked state.

Vehicle and charging system

An electronic control unit of an electric vehicle is configured to, in a case of making a welding diagnosis of a charging relay with an external power supply device not being connected to a charging inlet, start the welding diagnosis when a vehicle speed becomes equal to or higher than a first vehicle speed, interrupt the welding diagnosis when the vehicle speed becomes equal to or lower than a second vehicle speed during the welding diagnosis, and resume the welding diagnosis when the vehicle speed becomes equal to or higher than the first vehicle speed during the interruption of the welding diagnosis. The second vehicle speed is equal to or lower than the first vehicle speed.

Electric vehicle and control method for electric vehicle

An ECU of a vehicle performs diagnosis processing for diagnosing whether or not a charge relay has stuck after end of charging of a power storage. When the diagnosis processing has not normally ended, the ECU requests connection again of a connector to a charge port for performing re-diagnosis processing for diagnosing again whether or not the charge relay has stuck. When the connector and the charge port are connected to each other again, the ECU determines whether or not it has received a charging start signal from a DC power feed facility. When the ECU has received the charging start signal, it does not perform re-diagnosis processing.

Vehicle

When a prescribed operation is performed during execution of AC charging, an ECU of a vehicle performs a charging stop process. The ECU determines whether or not a resume condition is satisfied during the charging stop process. When the resume condition is satisfied and when a charging connector is connected to an inlet, the ECU brings a locking device to a locked state and resumes the AC charging. When the resume condition is not satisfied or when the charging connector is not connected to the inlet, the ECU does not resume the AC charging.

A charger is permitted to perform external charging of a power storage device in a connector locked state in which a charging connector is locked to a charge inlet by a connector lock device. An ECU releases the connector locked state in conjunction a door unlock operation of releasing a door locked state placed by a door lock mechanism. When the external charging of the power storage device by the charger is cancelled by the connector locked state being released, a different charging stop history, depending on presence or absence of a predetermined user operation after the external charging is cancelled, is stored into a storage device.

Vehicle equipped with power storage device

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

When DC charging is completed, an ECU of a vehicle performs first diagnosis processing for diagnosing whether or not charge relays have stuck with an SMR being closed. In the first diagnosis processing, whether or not the charge relays have stuck is diagnosed based on an open/close command to the charge relays and a voltage applied to a charge port. When both of the charge relays are determined as having stuck in the first diagnosis processing, the ECU performs second diagnosis processing on the assumption that a DC power feed facility falls under a specific DC power feed facility. In the second diagnosis processing, whether or not the charge relays have stuck is diagnosed based on the open/close command to the charge relays, the voltage applied to the charge port (a first voltage), and a voltage (a second voltage) between a first power line and a second power line.

Vehicle and sticking diagnosis method

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.

Motor-driven vehicle

A vehicle that enables external charging which is charging of a vehicle-mounted electric power storage device using electric power supplied from an electric power supply outside the vehicle includes a communication device configured to communicate with a server outside the vehicle, and an electronic control unit. The ECU is configured to execute a process for timer charging that is the external charging executed in accordance with a set time schedule. When the timer charging based on alternating current charging is performed, the ECU is configured to set the time schedule in the vehicle without using the server. When the timer charging based on direct current charging is performed, the ECU is configured to control the communication device to transmit data needed for setting the time schedule in a direct current electric power supply facility to the server.

Vehicle, method of controlling vehicle, and charging system

A server that receives an instruction related to timer charging in a vehicle from a user includes a communication device and a controller. The instruction from the user includes first data needed for determining a time schedule and second data indicating which one of alternating current charging and direct current charging is performed. The controller is configured to control the communication device to transmit the first data to the vehicle when the second data indicates the alternating current charging, and control the communication device to transmit the first data to a direct current electric power supply facility when the second data indicates the direct current charging.

Server and charging system

An ECU performs a program including: during charging, when abnormality information has been received, bringing each of an SMR and a CHR into an OFF state; when a charging connector is disconnected and when a vehicle is in a Ready-On state, starting a ground fault detection process; when it is determined that a ground fault has occurred on the vehicle side, performing a display process (); and in the state where it is not determined that a ground fault has occurred on the vehicle side, when a prescribed detection time period has elapsed, performing a display process ().

Ground fault protection for charging system and electrically powered vehicle

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.

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Toyota, Japan

Koichi Kojima