POWER TRANSFER SYSTEM

摘要

A power transfer system includes a power reception coil arranged on a bottom surface of a vehicle, a plurality of members arranged along the bottom surface, a plurality of temperature detectors arranged around the power reception coil, and a controller that causes the power to be transmitted from a power transmission coil to decrease when a detection temperature of any of the plurality of temperature detectors is equal to or higher than a prescribed threshold, the prescribed value being set lower for a temperature detector of the plurality of temperature detectors provided closer to a member having a lower heat resistance.

主权项

1. A power transfer system comprising:
a power reception coil provided on a bottom surface of a vehicle; a power transmission coil that contactlessly transmits power to the power reception coil; a plurality of members mounted along the bottom surface of the vehicle around the power reception coil; a plurality of temperature detectors, each of which detects a detection temperature that increases as a temperature of each of the plurality of members increases; and a controller that causes the power to be transmitted from the power transmission coil to decrease when the detection temperature detected by any of the plurality of temperature detectors is equal to or higher than a prescribed threshold, wherein at least one of the plurality of members is a heated member that increases in temperature by magnetic flux emitted from the power transmission coil, the heated member is located in a displacement direction spaced from an axis of the power reception coil, the plurality of temperature detectors are arranged in a plurality of positions around the axis of the power reception coil, and a value of the prescribed threshold is set lower for a temperature detector associated with the heated member having lower heat resistance than for a temperature detector associated with one of the plurality of members other than the heated member and having a higher heat resistance than the heated member.