Method for transmitting wireless power in wireless charging system including a wireless power transmitting unit and wireless power receiving unit
First Claim
1. A method of controlling a wireless power transmitter, the method comprising:
- receiving first information related to a maximum voltage from each of the plurality of power receiving units (PRUs);
transmitting a first level of power for charging the plurality of PRUs;
receiving second information related to a measured voltage in each of the plurality of PRUs;
identifying a voltage ratio of each of the plurality of PRUs based on the first information and the second information, wherein the voltage ratio is a measured voltage relative to a maximum voltage of each of the plurality of PRUs;
selecting a PRU from among the plurality of PRUs based on the identified voltage ratio; and
transmitting a second level of power for charging according to a voltage setting value of the selected PRU.
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Abstract
A method for transmitting wireless power in a wireless charging system and a wireless power transmitting unit (PTU) and provided. The method for transmitting wireless power in a wireless charging system includes receiving information related to a voltage from each of a plurality of power receiving units (PRUs); identifying a voltage ratio of each of the plurality of PRUs based on the received information, wherein the voltage ratio is a current voltage relative to a first voltage; determining a PRU among the plurality of PRUs based on the identified voltage ratio; and adjusting transmission power according to a voltage setting value of the determined PRU.
15 Citations
14 Claims
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1. A method of controlling a wireless power transmitter, the method comprising:
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receiving first information related to a maximum voltage from each of the plurality of power receiving units (PRUs); transmitting a first level of power for charging the plurality of PRUs; receiving second information related to a measured voltage in each of the plurality of PRUs; identifying a voltage ratio of each of the plurality of PRUs based on the first information and the second information, wherein the voltage ratio is a measured voltage relative to a maximum voltage of each of the plurality of PRUs; selecting a PRU from among the plurality of PRUs based on the identified voltage ratio; and transmitting a second level of power for charging according to a voltage setting value of the selected PRU. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless power transmitting unit (PTU), comprising:
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communication circuitry; a power transmitter; and a processor configured to; receive first information related to a maximum voltage from each of a plurality of power receiving units (PRUs) through the communication circuitry; control the power transmitter to transmit a first level of power for charging the plurality of (PRUs); receive second information related to a measured voltage in each of the plurality of PRUs through the communication circuitry; identify a voltage ratio of each of the plurality of PRUs based on the first information and the second information; select a PRU from among the plurality of PRUs based on the identified voltage ratio, wherein the voltage ratio is a measured voltage relative to a maximum voltage of each of the plurality of PRUs; and transmit a second level of power for charging the plurality of PRUs based on a voltage setting value of the selected PRU. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification