WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM, AND POWER CONTROL METHOD OF WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM
First Claim
1. A power control method of a wireless power transmission and charging system, the power control method comprising:
- generating charging power using the power amplifier, the charging power being used to charge a target device;
transmitting the charging power to the target device;
detecting a change in a current input to the power amplifier, a change in a temperature of the source device, a change in an amount of a power received to the target device, or a change in a temperature of the target device; and
adjusting a voltage supplied to the power amplifier, based on the detected change in the current input to the power amplifier, the detected change in the temperature of the source device, the detected change in the amount of the power received to the target device, or the detected change in the temperature of the target device.
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Abstract
A wireless power transmission and charging system, and a power control method of the wireless power transmission and charging system are provided. The power control method may include generating charging power using the power amplifier. The charging power may be used to charge a target device. The charging power may be transmitted to the target device. The voltage supplied to the power amplifier may be adjusted based on a detected change in the current input to the power amplifier, a detected change in the temperature of the source device, a detected change in the amount of the power received to the target device, or a detected change in the temperature of the target device.
160 Citations
19 Claims
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1. A power control method of a wireless power transmission and charging system, the power control method comprising:
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generating charging power using the power amplifier, the charging power being used to charge a target device; transmitting the charging power to the target device; detecting a change in a current input to the power amplifier, a change in a temperature of the source device, a change in an amount of a power received to the target device, or a change in a temperature of the target device; and adjusting a voltage supplied to the power amplifier, based on the detected change in the current input to the power amplifier, the detected change in the temperature of the source device, the detected change in the amount of the power received to the target device, or the detected change in the temperature of the target device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless power transmitter of a wireless power transmission and charging system, the wireless power transmitter comprising:
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a power converter configured to generate power; a source resonator configured to transmit the power to a target device; and a control/communication unit configured to adjust a voltage supplied to a power amplifier based on a change in a current input to the power amplifier, wherein a change in a temperature of the source device, a change in an amount of a power received to the target device, or a change in a temperature of the target device.
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13. The wireless power transmitter 12, wherein the power converter is configured to generate power by converting a direct current (DC) voltage to an alternating current (AC) voltage using a resonance frequency.
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14. The wireless power transmitter 12, wherein the control/communication unit is further configured to:
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assign a control identifier (ID) to the target device, and determine an amount of a reference power based on a battery state of the target device to which the control ID is assigned, wherein the control ID is used to identify the target device, and the reference power is supplied to the power amplifier.
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15. A power receiving method of a wireless power transmission and charging system, the power receiving method comprising:
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receiving a charging power for the charging operation from the source device; transmitting, to the source device, information on an amount of a received power, or information on a change in a temperature of a target device, based on a request of the source device; and receiving the charging power from the source device, after the source device adjusts a voltage supplied to a power amplifier of the source device based on the information on the amount of the received power or the information on the change in the temperature of the target device. - View Dependent Claims (16, 17, 18, 19)
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Specification