Vehicle and power transmission/reception system

摘要

A vehicle includes a power reception unit for receiving electric power in a non-contact manner by electromagnetic field resonance, and a device power feeding unit for transmitting electric power to be supplied to an in-vehicle electrical device in a non-contact manner by electromagnetic induction. A distance over which the electric power is transmitted from an external power transmission unit to the power reception unit in a non-contact manner is longer than a distance over which the electric power is transmitted from the device power feeding unit to the in-vehicle electrical device in a non-contact manner. The vehicle further includes a main battery for supplying electric power to a motor generator, and an auxiliary battery. The auxiliary battery has a voltage lower than a voltage of the main battery. The device power feeding unit receives electric power from the auxiliary battery and transmits the power to the in-vehicle electrical device.

主权项

1. A vehicle comprising:
a main battery; a converter connected to the main battery; an inverter connected to the converter and a rotational electric machine; a first relay provided between the main battery and the converter; a power reception device that receives electric power for running of the vehicle in a non-contact manner by electromagnetic field resonance; a second relay provided between the main battery and the power reception device; a power transmission device that transmits electric power to be supplied to an in-vehicle electrical device in a non-contact manner by electromagnetic induction, the power transmission device being configured to receive electric power from the main battery via the first relay; and a control unit that:
switches between ON/OFF states of the first relay and ON/OFF states of the second relay;prohibits power supply from the power transmission device to the in-vehicle electrical device when the power reception device can receive electric power with the first relay being OFF and the second relay being ON;prohibits power supply from the power transmission device to the in-vehicle electrical device when the power reception device is prohibited from receiving electric power with the first relay being OFF and the second relay being OFF; andallows power supply from the power transmission device to the in-vehicle electrical device when the first relay is ON.