Wireless power transmission and charging system, and resonance frequency control method of wireless power transmission and charging system

摘要

A wireless power transmission and charging system, and a communication method of the wireless power transmission and charging system are provided. In one embodiment, a resonance frequency control method of a wireless power transmitter may include: generating communication power used for communication in a plurality of target devices using a reference resonance frequency; transmitting communication power to the plurality of target devices; transmitting charging power to the plurality of target devices; and adjusting the reference resonance frequency based on a reflected wave of the charging power, the amount of power received by one or more of the target devices, the amount of the charging power, the transmission efficiency of the charging power, or any combination thereof.

主权项

1. A resonance frequency control method of a wireless power transmitter, the method comprising:
generating communication power used for communication in a plurality of target devices; transmitting communication power to the plurality of target devices; detecting a number of the plurality of target devices based on response messages corresponding to the wake-up request message; transmitting charging power to the plurality of target devices based on the number of the plurality of target devices; and adjusting a resonance frequency based on an amount of power received by one or more of the target devices, an amount of the charging power, a transmission efficiency of the charging power, or any combination thereof.