Wireless power transmission apparatus using ultrasound

摘要

Provided is a wireless power transmission apparatus. The apparatus includes an ultrasound transmitter generating an ultrasound signal in response to an external source voltage and transmitting the generated ultrasound signal to a medium layer and an ultrasound receiver receiving the ultrasound signal through the medium layer and converting the received ultrasound signal into a driving voltage. The ultrasound transmitter and receiver are manufactured to control impedance values thereof to be matched with each other and a distance between the ultrasound transmitter and receiver is controlled according to predetermined distance conditions.

主权项

1. A wireless power transmission apparatus comprising:
an ultrasound transmitter generating an ultrasound signal in response to an external source voltage and transmitting the generated ultrasound signal to a medium layer; and an ultrasound receiver receiving the ultrasound signal through the medium layer and converting the received ultrasound signal into a driving voltage, wherein the ultrasound transmitter and the ultrasound receiver are manufactured to control impedance values thereof to be matched with each other, and a distance between the ultrasound transmitter and the ultrasound receiver is controlled according to predetermined distance conditions, and wherein the ultrasound transmitter comprises a drive controller determining the distance between the ultrasound transmitter and the ultrasound receiver by controlling a driving frequency of the ultrasound signal when the distance between the ultrasound transmitter and the ultrasound receiver is out of the predetermined distance conditions.