POWER RECEPTION DEVICE AND VEHICLE INCLUDING THE SAME

摘要

When a distance between coils is detected, a measuring device measures a power reception voltage VR. A notifying device notifies the distance between the coils based on a measurement result by the measuring device. A power reception unit is configured such that a characteristic of power reception voltage VR with respect to the distance between the coils has a plurality of extreme values in accordance with change in the distance between the coils. When a local minimum value of power reception voltage VR is detected during execution of alignment, a vehicle ECU controls the notifying device to notify the distance between the coils corresponding to the detected local minimum value of power reception voltage VR, by using the characteristic of power reception voltage VR prepared preliminarily.

主权项

1. A power reception device which is mounted on a vehicle and receives, in a contactless manner, electric power output from a power transmission device provided outside said vehicle, the power reception device comprising:
a power reception coil configured to receive, in a contactless manner, the electric power output from a power transmission coil of said power transmission device; a measuring device configured to, when a distance between said power transmission coil and said power reception coil is detected based on a power reception voltage at the time of said power reception coil's reception of the electric power output from said power transmission coil, measure said power reception voltage; a notifying device configured to notify said distance based on a measurement result by said measuring device, and a distance calculator configured to calculate a movement distance of the vehicle, said power reception coil being configured such that a characteristic of said power reception voltage with respect to said distance has a plurality of extreme values in accordance with change in said distance, when said measuring device detects a local minimum value of said power reception voltage after detecting a rising of said power reception voltage, said notifying device being configured to notify a predetermined first distance corresponding to the detected local minimum value, after detecting the local minimum value of said power reception voltage, said notifying device being configured to notify a distance calculated based on the first distance and a movement distance calculated by said distance calculator.