Wireless power transmission apparatus using ultrasound
First Claim
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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, andwherein 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.
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Abstract
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.
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Citations
16 Claims
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1. A wireless power transmission apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmission apparatus comprising:
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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 a distance between the ultrasound transmitter and the ultrasound receiver is determined according to predetermined distance conditions, and wherein the ultrasound receiver comprises a light emitter for alignment, the light emitter generating an optical signal, and the ultrasound transmitter comprises a camera module taking images for an alignment with the ultrasound receiver according to the optical signal. - View Dependent Claims (11, 12, 13, 14)
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15. A wireless power transmission apparatus comprising:
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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 a distance between the ultrasound transmitter and the ultrasound receiver is determined according to predetermined distance conditions, and wherein the ultrasound transmitter comprises first to third balls for being aligned with the ultrasound receiver and the ultrasound receiver is formed with at least one groove, the first and second balls being located to be movable along the at least one groove, the third ball being in contact with a surface of the ultrasound receiver that includes no groove. - View Dependent Claims (16)
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Specification