POWER TRANSMITTING UNIT (PTU) AND POWER RECEIVING UNIT (PRU), AND COMMUNICATION METHOD OF PTU AND PRU IN WIRELESS POWER TRANSMISSION SYSTEM
First Claim
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1. A communication method of a power transmitting unit (PTU) in a wireless power transmission system, the communication method comprising:
- receiving a connection request signal from each of at least one power receiving unit (PRU);
transmitting impedance change information of the at least one PRU to the at least one PRU;
sensing a change in an impedance of each of the at least one PRU receiving the impedance change information; and
determining whether each of the at least one PRU is connected based on the sensed change in the impedance.
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Abstract
A communication method of a power transmitting unit (PTU) in a wireless power transmission system includes receiving a connection request signal from each of at least one power receiving unit (PRU), transmitting impedance change information of the at least one PRU to the at least one PRU, sensing a change in an impedance of each of the at least one PRU receiving the impedance change information, and determining whether each of the at least one PRU is connected based on the sensed change in the impedance.
32 Citations
20 Claims
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1. A communication method of a power transmitting unit (PTU) in a wireless power transmission system, the communication method comprising:
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receiving a connection request signal from each of at least one power receiving unit (PRU); transmitting impedance change information of the at least one PRU to the at least one PRU; sensing a change in an impedance of each of the at least one PRU receiving the impedance change information; and determining whether each of the at least one PRU is connected based on the sensed change in the impedance. - View Dependent Claims (2, 3, 4)
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5. A communication method of a power receiving unit (PRU) in a wireless power transmission system, the communication method comprising:
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transmitting a power change request to a power transmitting unit (PTU) through a communication channel; receiving a changed power from the PTU; and transmitting a connection request signal through the communication channel in response to the changed power being received from the PTU within a predetermined period of time. - View Dependent Claims (6)
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7. A power transmitting unit (PTU) in a wireless power transmission system, the PTU comprising:
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a connection request receiver configured to receive a connection request signal from each of at least one power receiving unit (PRU); an impedance change information transmitter configured to transmit impedance change information of each of the at least one PRU to each of the at least one PRU; a sensor configured to sense a change in an impedance of each of each of the at least one PRU receiving the impedance change information; and a determiner configured to determine whether each of the at least one PRU is connected based on the sensed change in the impedance. - View Dependent Claims (8, 9, 10)
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11. A communication method of a power receiving unit (PRU) in a wireless power transmission system, the communication method comprising:
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transmitting a request to a power transmitting unit (PTU); receiving a response to the request from the PTU; determining whether the PRU may receive wireless power from PTU based on the response; establishing a wireless power transmission network between the PRU and the PTU in response to a result of the determining being that the PRU may receive wireless power from the PTU. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification