| 摘要 |
PROBLEM TO BE SOLVED: To provide a contactless feed apparatus that can detect foreign matter and control a feed state in accordance with whether there is foreign matter.SOLUTION: In the contactless feed apparatus, a transmission side control device 41 controls a transmission control circuit 42 to stop power transmission if transmission efficiency detected during the power transmission is less than a reference value. The transmission efficiency varies according to a relative position, and the transmission efficiency is best when, for example, a vehicle side pad 30 and a ground side pad 50 are positioned closest (in reference position). The transmission efficiency lowers as the two are separated. If actual transmission efficiency is less than the reference value of transmission efficiency based on the relative position, a determination can be made that it is for some reason, for example, due to intervening foreign matter. |
