Patent ID: 9142995
Filing Date: 2015-09-22
Classification: H02J

Abstract:
1. A method of controlling a non-contact power charging system, comprising: transmitting a call signal for requesting a unique identifier signal to a detected object to discern if the detected object is a receiving apparatus; generating a power transmission signal in a non-contact power transmission apparatus; transmitting the power transmission signal to the receiving apparatus to charge the receiving apparatus; receiving charge information from the receiving apparatus; and adjusting a level of the power transmission signal transmitted to the receiving apparatus by adjusting a frequency of the power transmission signal, based on the charge information received from the receiving apparatus, wherein the generating and transmitting the power transmission signal occurs when the unique identifier is received from the receiving apparatus in response to the call signal, and wherein the charge information comprises a request to lower a level of the power transmission signal which is transmitted from the receiving apparatus if any one of voltage and current measured in the receiving apparatus is greater than an upper limit of a predetermined range, and a request to raise a level of the power transmission signal which is transmitted from the receiving apparatus if anyone of voltage and current measured in the receiving apparatus is less than a lower limit of the predetermined range.