Patent ID: 8552593
Filing Date: 2013-10-08
Classification: H01F,H02J,H04B

Abstract:
1. A method for controlling a power transmission in a non-contact power transmission device, the method comprising: detecting a load change of a primary core in the non-contact power transmission apparatus when an object is placed on the non-contact power transmission apparatus; transmitting a requesting signal to the object via the primary core if a load change is detected; receiving a response signal via the primary core in response to the requesting signal and measuring a delay time between the time of outputting the requesting signal and the time of receiving the response signal; confirming whether the object is a non-contact power receiving apparatus by comparing the delay time with a reference time; receiving a pulse signal according to the comparison result of the non-contact power signal and a reference voltage, the non-contact power signal being transmitted from the non-contact power receiving apparatus; and controlling an intensity of the non-contact power signal according to the pulse signal.