One-to-multiple wireless energy transmission method and device for frequency division multiple access
An energy transmission device and frequency division multiple access technology, which is applied in the direction of circuit devices, transmission systems, electrical components, etc., can solve the problems of difficult synchronization of wireless transmission, many elements of TR transmission arrays, etc., and achieve low difficulty in implementation, high transmission energy efficiency, The effect of simple method
Active Publication Date: 2019-08-02
深圳市宇能无线技术有限公司
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[0006] Embodiments of the present invention provide a frequency division multiple access single-to-multiple wireless energy transmission method and device, which are used to solve technical problems such as multiple TR transmitting array elements and difficult wireless transmission synchronization faced by the existing TR array energy transmission technology
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[0034] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0035] The terms "first", "second", "third" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclus...
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The invention discloses a frequency division multiple access one-to-many wireless energy transmission method and apparatus. The method comprises the following steps: detecting the return loss RLi of an energy transmission antenna of an energy transmission device when each energy transmission device is energized, i=1, 2,..., M; selecting and allocating power transmission frequency points for a power receiving device I, wherein the selection condition for the energized device i is the return lossand the distribution of the transmission energy frequency point RLth is the preset return loss threshold. Any two input frequency points are spaced apart by more than a value in the description. The center frequencies of the M energized antennas are adjusted to the output frequency band respectively. The bandwidth is adjusted to Delta f. The power transmission device generates ulti-channel monophonic signals with a frequency as in the description and the signals are synthesized into a polyphonic signal and the polyphonic signal is radiated out; The M energy receiving devices at the receiving end select their single-tone energy transmission signals from the multi-tone signals through their respective receiving antennas to realize one-to-many wireless energy transmission. The invention can solve the technical problems that the prior TR array energy transmission technology needs more TR emitting array elements and wireless emitting synchronization is difficult and the like.
Description
technical field [0001] The invention relates to the technical field of wireless energy transmission, in particular to a single-to-multiple wireless energy transmission method and device for frequency division multiple access. Background technique [0002] Wireless energy transmission, that is, to transmit energy from the source to the load in a wireless or non-contact manner. With the continuous development of society, people have studied in the field of wireless energy transmission for more than one hundred years. Up to now, wireless energy transmission technologies mainly include coil energy transmission, directional antenna energy transmission, time reversal (Time Reversal, TR) array energy transmission, etc. [0003] Coil energy transmission is specifically divided into electromagnetic induction energy transmission and electromagnetic resonance energy transmission. Commercial products have been released, such as wireless charging pads for Apple, Xiaomi and other brands ...
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IPC IPC(8): H02J50/20H04B1/46
CPCH02J50/20H04B1/46
Inventor 李涛徐新松陈家振赵德双
Owner 深圳市宇能无线技术有限公司
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