Wireless power transmitter and wireless power transfer method thereof in many-to-one communication

摘要

A wireless power transmitter for transmitting power in a wireless manner by forming a wireless power signal and a wireless power transfer method thereof are capable of optimizing transmission efficiency for a plurality of wireless power receivers, by deciding an optimal transmission parameter (especially, a frequency corresponding to the wireless power signal or a resonant frequency) for the plurality of wireless power receivers based on control errors received from the plurality of wireless power receivers, respectively, via respective time slots allocated to the plurality of wireless power receivers.

主权项

1. A wireless power transfer method for a wireless power transmitter which transfers power in a wireless manner by forming a wireless power signal, the method comprising:
detecting a plurality of wireless power receivers; acquiring control errors corresponding to a first control error value and a second control error value from the detected plurality of wireless power receivers, respectively; detecting transmission parameters corresponding to the plurality of wireless power receivers, respectively, based on the first control error value and the second control error value; and transferring power in the wireless manner to each of the plurality of wireless power receivers by forming the wireless power signal based on the detected transmission parameters, wherein the first control error value is received from a first wireless power receiver in a first time duration which is allocated to the first wireless power receiver and the second control error value is received from a second wireless power receiver in a second time duration which is allocated to the second wireless power receiver.