Wireless power system comprising power transmitter and power receiver and method for receiving and transmitting power of the apparatuses
First Claim
1. A method of a transmitter, the method comprising:
- transmitting a detection power;
detecting a variation of a load impedance, the variation being greater than a predetermined value;
receiving, from a receiver, a first signal including an identifier and a load characteristic of the receiver, the load characteristic including load information indicating the variation of the load impedance;
transmitting, to the receiver, a first response to form a communication connection with the receiver based on the first signal;
receiving, from the receiver, a second signal including required power information of the receiver;
determining whether power is available to the receiver based on the required power information; and
transmitting, to the receiver, a second response including permission information indicating a standby mode or a charging mode based on a result of the determining.
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Accused Products
Abstract
Provided is a transmitter in a wireless power transmission system, the transmitter including a Transmission (Tx) power converter for converting a Direct Current (DC) voltage into a first Alternating Current (AC) voltage, and converting the converted first AC voltage into a second AC voltage by amplifying the converted first AC voltage, a Tx matching circuit for matching an impedance thereof with that of a receiver for receiving the second AC voltage to transmit the second AC voltage, a Tx resonator for resonating the second AC voltage into resonant waves to transmit the second AC voltage to the receiver, and a Tx controller for determining an amplification rate of the first AC voltage and controlling the Tx power converter to convert the first AC voltage into the second AC voltage according to the determined amplification rate.
31 Citations
13 Claims
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1. A method of a transmitter, the method comprising:
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transmitting a detection power; detecting a variation of a load impedance, the variation being greater than a predetermined value; receiving, from a receiver, a first signal including an identifier and a load characteristic of the receiver, the load characteristic including load information indicating the variation of the load impedance; transmitting, to the receiver, a first response to form a communication connection with the receiver based on the first signal; receiving, from the receiver, a second signal including required power information of the receiver; determining whether power is available to the receiver based on the required power information; and transmitting, to the receiver, a second response including permission information indicating a standby mode or a charging mode based on a result of the determining. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transmitter for transmitting wireless power to a receiver, comprising:
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a communication interface for; receiving, from a receiver, a first signal including an identifier and a load characteristic of the receiver, the load characteristic including load information indicating the variation of the load impedance, and receiving, from the receiver, a second signal including required power information by the receiver; a resonator; a power supply; and a processor configured to; control the power supply to transmit a detection power through the resonator, detect a variation of a load impedance, the variation being greater than a predetermined value, control the communication interface unit to transmit, to the receiver, a first response to form a communication connection with the receiver based on the first signal, determine whether power is available to the receiver based on the power information, and control the communication interface to transmit, to the receiver, a second response including permission information indicating a standby mode or a changing mode based on a result of the determination. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification