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Title:
WIRELESS ENERGY TRANSMISSION UNIT, DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/134088
Kind Code:
A1
Abstract:
The present application provides a wireless energy transmission unit, a device and a method. The wireless energy transmission unit comprises a radiation source, a light emitting body, a controller and a metasurface. The radiation source is used for emitting an electromagnetic wave signal, the controller is used for controlling the light emitting body to provide light sources with different light intensities, the light emitting body provides the light sources with different light intensities in response to the control of the controller, and the metasurface is used for performing phase adjustment on the electromagnetic wave signal incident on the metasurface, wherein the equivalent impedance of the metasurface changes with the change of the light intensity, so that the phase offset of the electromagnetic wave signal emitted by means of the metasurface also changes with the change of the light intensity. As the controller controls the light emitting body to provide the light sources with different light intensities, the equivalent impedance of the metasurface changes accordingly, so that the phase of the electromagnetic wave signal incident on the metasurface can be controlled with high precision, and thus the electromagnetic wave signal emitted by the wireless energy transmission unit can achieve high-precision energy focusing, which is beneficial for improving charging efficiency.

Inventors:
JIANG WEIPENG (CN)
HUANG TAO (CN)
Application Number:
PCT/CN2020/139665
Publication Date:
June 30, 2022
Filing Date:
December 25, 2020
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J50/00
Domestic Patent References:
WO2018229494A12018-12-20
Foreign References:
CN107134861A2017-09-05
CN109193970A2019-01-11
CN107769298A2018-03-06
CN109378590A2019-02-22
CN109904939A2019-06-18
Other References:
See also references of EP 4250529A4
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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