| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: there is the possibility that foreign matter may be heated while matching between supply power and reception power is verified when foreign matter exists and there is the possibility that transmission efficiency may lower when a positional relationship between power transmission and reception is not appropriate and the power transmission apparatus may cause a failure or the like due to heating.SOLUTION: The power transmission apparatus, transmitting electric power to the power reception apparatus, performs transmission of electric power by radio. The power transmission apparatus modulates electric power according to a predetermined ID so that the power reception apparatus detects the predetermined ID and performs power transmission. The power transmission apparatus, when receiving the predetermined ID by the power reception apparatus from the power reception apparatus, starts normal power transmission on the basis of received electric power of the power reception apparatus. |
