Toyota Jidosha Kabushiki Kaisha

Masato Maemura

Toshiya Hashimoto

Ryosuke Ikemura

Shogo Tsuge

An in-motion power supply control device includes a processor, which limits a continuous power supply time for a vehicle in motion to a predetermined value or less in a case where a supply device that transfers power to the vehicle in motion includes no foreign object detection unit.

In-motion power supply control device

A wireless power transfer system wirelessly transfers power from a supply device to a vehicle, the supply device including a primary device that transfers power and being provided on a road, the vehicle being equipped with a power reception device that includes a secondary device and traveling on the road by the power received from the supply device. Further, the supply device further includes: a processor, and the processor: acquires vehicle speed information indicating at least a speed of the vehicle; and sets a time for confirming magnetic coupling between the primary device and the secondary device based on the vehicle speed information.

Wireless power transfer system

The wireless power transmission system according to the present disclosure includes: a supply device installed on the road side and transmitting electric power; a vehicle equipped with a power receiving device and traveling on the road; wherein in the wireless power transmission system, a power receiving device receives power from a supply device and wirelessly transmits the power to a vehicle, the supply device is a primary coil that generates a magnetic field for transmitting power to the vehicle; a first communication device that performs short-range wireless communication with the vehicle; the vehicle includes a secondary coil that receives power transmitted contactlessly from the primary coil; a second communication device that performs short-range wireless communication with the supply device; in the first and second communication devices, one communication device has a single communication unit, and the other communication device has a plurality of communication units.

Wireless power transmission system

The control device includes a processor that is configured to, in a wireless power transmission system that transmits, in a noncontact manner, power from a primary coil included in a supply facility to a secondary coil included in a vehicle that is traveling, output information for changing a traveling position in a width direction of the vehicle, and correct the traveling position in the width direction according to a change in the power transmission state when changing the traveling position in the width direction.

Control device and wireless power transmission system

A power receiving device includes: a power receiving coil receiving power transmitted from a power transmission coil; a rectifier circuit between the power receiving coil and a load; a smoothing capacitor between the rectifier circuit and the load; and a control device executing a short-circuit mode of short-circuiting between output ends of the power receiving coil. Further, the control device includes an acquisition unit acquiring information indicating a drive frequency of an inverter in the power transmission device, a setting unit setting a switching frequency of the rectifier circuit to a value different from the drive frequency of the inverter, and a control unit executing the short-circuit mode based on the switching frequency set by the setting unit.

Power receiving device and contactless power transmission system

A control device for power feeding during traveling includes a processor. Further, when a living object or a metal foreign object is detected around a primary coil of a power transfer device that transfers power to a power reception device of a vehicle that is traveling, the processor deletes identification information on the primary coil registered in an identification information list of the primary coil, and when the living object or the metal foreign object is not detected, the processor performs compatibility check and service authentication between the power reception device of the vehicle and the power transfer device.

Control device for power feeding during traveling

A power reception device includes: a power reception coil that receives power transmitted from a power transmission coil in a non-contact manner; and a control device that executes a short-circuit mode in which a plurality of switching elements provided between the power reception coil and a load are caused to perform switching operations to short-circuit between output terminals of the power reception coil. Further, when a phase of a current and a phase of a voltage in the power reception device are deviated from each other, the control device sets switching timings of the switching elements to the short-circuit mode in a manner that the phase of the voltage is shifted in a direction in which a power factor of power supplied to the load is deteriorated.

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Nisshin, Japan

Masato Maemura