US 12,587,042 B2 · Wireless power transmission system and wireless power transmission method with power wave-based adjustment mode

Abstract

A wireless power transmission system and a wireless power transmission method are provided that, even if a power transmitter does not have a communication functionality, can improve a transmission efficiency of power waves transmitted from the power transmitter. The wireless power transmission system includes a power transmitter that transmits a power wave and one or more power receivers that receive the power wave, wherein the power transmitter includes a controller that measures a strength of a power wave transmitted from the power receivers by adjusting at least one of a position of the power transmitter and an orientation of an antenna receiving the power wave transmitted from the power receivers and transmits a power wave to the power receivers in accordance with at least one of the position of the power transmitter and the orientation of the antenna upon the measured strength of the power wave exceeding a predetermined value.

Claims17

Dependent claims

A wireless power transmission system, comprising:

a power transmitter configured to transmit a first power wave in a power transmission mode and receive a second power wave in an adjustment mode;
and
at least one power receiver comprising a power supply and an oscillator configured to generated the second power wave, the least one power receiver configured to receive the first power wave in the power transmission mode and transmit the second power wave in the adjustment mode,
wherein the power transmitter includes a controller configured to:
in the adjustment mode, measure a strength of the second power wave transmitted from the at least one power receiver while adjusting at least one of a position of the power transmitter and an orientation of an antenna receiving the second power wave transmitted from the at least one power receiver, and
in the power transmission mode, transmit the first power wave to the at least one power receiver in accordance with at least one of the position of the power transmitter and the orientation of the antenna upon the measured strength of the second power wave exceeding a predetermined value.

3 more elements

A wireless power transmission method, comprising:

transmitting a first power wave in a power transmission mode by using a power transmitter;
receiving a second power wave in an adjustment mode by using the power transmitter;
receiving the first power wave in the power transmission mode by using at least one power receiver;
transmitting the second power wave in the adjustment mode by using the at least one power receiver;
in the adjustment mode, by using the power transmitter receiving the second power wave transmitted from the at least one power receiver, measuring a strength of the second power wave transmitted from the power receivers while adjusting at least one of a position of the power transmitter and an orientation of an antenna receiving the second power wave transmitted from the power receivers;
and
in the power transmission mode, by using the power transmitter measuring the strength of the second power wave, transmitting the first power wave to the power receivers in accordance with at least one of the position of the second power transmitter and the orientation of the antenna upon the measured strength of the second power wave exceeding a predetermined value,
wherein the least one power receiver comprises a power supply and an oscillator configured to generate the second power wave.

5 more elements

Dependencies are inferred from the claim text.

Wireless power transmission system and wireless power transmission method with power wave-based adjustment mode

Life of this patent

Wireless power transmission system and wireless power transmission method with power wave-based adjustment mode

Life of this patent

Abstract

Claims17