Wireless power transmission apparatus and transmission method thereof
First Claim
1. A wireless power transmission apparatus, comprising:
- a wireless power transmitter configured to receive an input power, generate a wireless power signal, wirelessly transmit the generated wireless power signal, receive a reflection wireless power signal to determine whether or not a loading is present, and, in response to a determination that loading is present, wirelessly transmit a reconfigured wireless power signal by using a substantially optimal impedance and a resonance frequency corresponding to the loading to supply power thereto for supplying and reflection of a remaining wireless power signal, that is not consumed, to the wireless power transmitter,wherein the wireless power transmitter is configured to calculate a ratio of the transmitted wireless power signal to the reflection wireless power signal and determine presence of the loading according to the calculated ratio of the transmitted wireless power signal to the reflection wireless power signal, andwherein the wireless power transmitter comprisesa frequency oscillator configured to receive the input power and generate the wireless power signal;
a power amplifier configured to output an amplified wireless power signal;
a transmitter configured to input and wirelessly transmit the wireless power signal or the amplified wireless power signal;
a transmitting controller configured to determine whether or not the loading is present; and
a power pass switch configured to connect the frequency oscillator to the transmitter in response to the transmitting controller determining whether or not the loading is present and connect the frequency oscillator to the power amplifier in response to the wireless power transmitter supplying power to the loading.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are a wireless power transmission apparatus and a transmission method thereof. The wireless power transmission apparatus is configured to include a wireless power transmitter generating a wireless power signal to be wireless transmitted, wirelessly transmitting the generated wireless power signal by a magnetic resonance manner, receiving a reflection wireless power signal to determine whether or not a load apparatus is presented, and supplying power to the load apparatus; and a wireless power receiver connected to the load apparatus and receiving the transmitted wireless power signal by the magnetic resonance manner and supplying it to the connected load apparatus and reflecting the remaining wireless power signal to the wireless power transmitter, whereby a transmission apparatus can recognize a receiving environment and resonance characteristics are improved, without a separate communication device or a system.
30 Citations
20 Claims
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1. A wireless power transmission apparatus, comprising:
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a wireless power transmitter configured to receive an input power, generate a wireless power signal, wirelessly transmit the generated wireless power signal, receive a reflection wireless power signal to determine whether or not a loading is present, and, in response to a determination that loading is present, wirelessly transmit a reconfigured wireless power signal by using a substantially optimal impedance and a resonance frequency corresponding to the loading to supply power thereto for supplying and reflection of a remaining wireless power signal, that is not consumed, to the wireless power transmitter, wherein the wireless power transmitter is configured to calculate a ratio of the transmitted wireless power signal to the reflection wireless power signal and determine presence of the loading according to the calculated ratio of the transmitted wireless power signal to the reflection wireless power signal, and wherein the wireless power transmitter comprises a frequency oscillator configured to receive the input power and generate the wireless power signal; a power amplifier configured to output an amplified wireless power signal; a transmitter configured to input and wirelessly transmit the wireless power signal or the amplified wireless power signal; a transmitting controller configured to determine whether or not the loading is present; and a power pass switch configured to connect the frequency oscillator to the transmitter in response to the transmitting controller determining whether or not the loading is present and connect the frequency oscillator to the power amplifier in response to the wireless power transmitter supplying power to the loading. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmitter, comprising:
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a frequency oscillator configured to receive an input power and generate a wireless power signal to be transmitted; a power amplifier configured to be disconnected from the frequency oscillator while determining whether or not a loading is present, and amplify and output the wireless power signal generated from the frequency oscillator while supplying power to the loading; a first resonance antenna including a variable capacitor circuit and a variable inductor circuit, configured to transmit the wireless power signal by using a substantially optimal impedance and a resonance frequency set by varying the inductance and capacitance of the variable capacitor circuit and the variable inductor circuit, and to receive and output a reflected wireless power signal; an impedance matching device positioned between the power amplifier and the first resonance antenna configured to provide the impedance matching between the power amplifier and the first resonance antenna; a directional power coupler positioned between the power amplifier and the impedance matching device or between the impedance matching device and the first resonance antenna and configured to have directivity to output the wireless power signal input through a first port from the power amplifier or the impedance matching device to the first resonance antenna through a second port and output the reflection wireless power signal input through the second port from the first resonance antenna through a third port; an output power detector configured to detect and output an output power of the wireless power signal output from the second port of the directional power coupler; a reflection power detector configured to detect and output a reflection power of the reflection wireless power signal output from the third port of the directional power coupler; a transmitting controller configured to calculate a ratio of the reflection power to the output power, determine whether or not the loading is present according to the calculated output-reflection power ratio, and in response thereto, control the first resonance antenna so as to transmit a reconfigured wireless power signal by using a substantially optimal impedance and resonance frequency corresponding to the loading; and a power pass switch configured to connect the frequency oscillator to the power amplifier to supply power to the loading and connect the frequency oscillator to the impedance matching device or the directional power coupler to determine whether or not the loading is present. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A wireless power transmission method, comprising:
- by a frequency oscillator, receiving an input power and generating a wireless power signal;
by a transmitting controller, controlling a power pass switch to connect the frequency oscillator to a transmitter; by the transmitter, wirelessly transmit the wireless power signal;
by the transmitting controller,detecting a reflected wireless power signal; calculating a ratio of the transmitted wireless power signal to the reflected wireless power signal; determining a presence of a loading according to the calculated ratio of the transmitted wireless power signal to the reflected wireless power signal; and in response to a determination that a loading is connected; searching a resonance frequency and a substantially optimal impedance therefor; reconfiguring the wireless power signal according to the searched resonance frequency and the substantially optimal impedance; controlling the power pass switch to connect the frequency oscillator to a power amplifier to perform substantially maximum power transmission level; and transmitting the amplified reconfigured wireless power signal by using the searched resonance frequency and the substantially optimal impedance via the power amplifier and the transmitter. - View Dependent Claims (17, 18, 20)
- by a frequency oscillator, receiving an input power and generating a wireless power signal;
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19. A wireless power transmission and reception apparatus, comprising:
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a wireless power receiver;
a power amplifier;a wireless power transmitter selectively decoupleable from the power amplifier, the transmitter configured to decouple with the power amplifier and generate a wireless power signal, wirelessly transmit the generated wireless power signal to a remote wireless power receiver, receive a reflection wireless power signal, calculate a ratio of the transmitted wireless power signal to the reflection wireless power signal, determine presence of a loading according to the calculated ratio, and, in response to a determination that the loading is present, couple with the power amplifier and wirelessly transmit a reconfigured and amplified wireless power signal by using a substantially optimal impedance and a resonance frequency corresponding to the loading to supply power to the remote wireless power receiver, wherein the wireless power transmitter comprises a frequency oscillator configured to receive input power and generate the generated wireless power signal; a power amplifier configured to output an amplified wireless power signal; a transmitter configured to receive and wirelessly transmit the wireless power signal or the amplified wireless power signal; a transmitting controller configured to determine whether or not the loading is present; and a power pass switch configured to connect the frequency oscillator to the transmitter in response to the transmitting controller determining whether or not the loading is present, and connect the frequency oscillator to the power amplifier in response to the wireless power transmitter supplying power to the loading.
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Specification