Apparatus and method for controlling power transmission in non-contact power charging system based on charge information received from the receiving apparatus
First Claim
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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, andwherein 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.
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Abstract
A non-contact power charging, in which power transmission can be interrupted when foreign materials are deposited on a charge plate of the non-contact power charging system. A charging operation can be continuously maintained at a stable voltage even if a non-contact power receiving apparatus moves by touching or displacement on the charge plate of the non-contact power charging system in the charging operation. Charging efficiency is improved.
19 Citations
11 Claims
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1. A method of controlling a non-contact power charging system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A non-contact power charging system, comprising:
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a primary charge core for transmitting a power transmission signal; a received signal processor for receiving charge information from a receiving apparatus; and a central control unit for receiving the charge information processed in the received signal processor and adjusting a frequency of the power transmission signal based on the charge information so as to adjust a level of the power transmission signal transmitted to the receiving apparatus, wherein the central control unit is configured to transmit a call signal for requesting a unique identifier signal to the receiving apparatus, and configured to generate and transmit the power transmission signal 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. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification