Vehicle, power transmitting device and contactless power supply system

摘要

A contactless power supply system contactlessly transmits electric power from a power transmitting device to a vehicle. The vehicle includes: a power receiving unit that contactlessly receives electric power from the power transmitting device; an electrical storage device that stores electric power received by the power receiving unit; and an impedance adjustment unit that includes a DC/DC converter and a relay and that is used to adjust an impedance between the power receiving unit and the electrical storage device. A vehicle ECU switches between a power supply path of which the impedance is adjusted by the DC/DC converter and a power supply path that does not use the DC/DC converter on the basis of a state of charge of the electrical storage device.

主权项

1. A vehicle comprising:
a power receiving unit configured to contactlessly receive electric power from a power transmitting device; an electrical storage device configured to store electric power received by the power receiving unit; and an impedance adjustment unit electrically connected between the power receiving unit and the electrical storage device, the impedance adjustment unit being configured to adjust an impedance between the power receiving unit and the electrical storage device, the impedance adjustment unit being configured to switch an adjusted state of the impedance between a first adjusted state and a second adjusted state on the basis of a power transfer state from the power transmitting device to the power receiving unit, and electric power received by the power receiving unit in the first adjusted state being supplied to the electrical storage device in a state where the impedance is not adjusted, wherein the power transmitting device includes a power transmitting unit configured to contactlessly supply electric power, and a coupling coefficient between the power transmitting unit and the power receiving unit is smaller than or equal to 0.1.