Radio energy transmission system in enclosed space, and control method for radio energy transmission system

Abstract

The invention discloses a radio energy transmission system in an enclosed space, and a control method for the radio energy transmission system. The system comprises the enclosed space, a radio energy transmitter, and at least one radio energy receiver. The boundary of the enclosed space is made of metal or a material which can achieve the total reflection of microwaves in a certain frequency range. The radio energy transmitter is excited in the enclosed space to form microwave electromagnetic standing waves, searches and determines an optimal working frequency point through the frequency scanning in a certain range. The radio energy receivers are distributed at the antinodes of the microwave electromagnetic standing waves and parts nearby the antinodes, captures radio energy from the electromagnetic standing waves, and converts the radio energy into DC electric energy for charging electronic equipment. According to the scheme of the invention, the radio energy transmission system avoids space radiation loss in an electromagnetic wave transmission process, also avoids disturbance on region external electronic equipment from electromagnetic waves and the damages to a human body, and can make the most of a three-dimensional space to carry out the high-efficiency radio charging of a plurality of pieces of electronic equipment.

Description

technical field [0001] The invention belongs to the field of radio technology, and in particular relates to a wireless energy transmission system in a closed space and a control method thereof. Background technique [0002] Wireless energy transfer technology can be used to provide wireless charging for electronic devices such as mobile phones, wireless sensors, and radio frequency identification tags. The existing wireless charging technologies mainly include near-field inductive coupling, radio frequency electromagnetic wave transmission and laser transmission. Near-field inductive coupling is currently the most mature wireless energy transmission technology. There are commercial products for mobile phone charging on the market, but this technology can only be used for short-distance (millimeter level) energy transmission. dimension surface. Laser transmission can carry a large amount of power and achieve power supply over a long distance, but the existence of obstacles ...

AI Technical Summary

Problems solved by technology

Laser transmission can carry a large amount of power and achieve long-distance power supply, but the existence of obstacles will affect the energy transfer between the transmitting and receiving devices

Radio-frequency electromagnetic wave transmission uses high-frequency electromagnetic beams to transmit energy, which is also suitable for long-distance wireless power supply. Its advantage is that it is less affected by the environment. The main disadvantage is that the radiation loss of transmission in open space is large, and the transmission efficiency is relatively low. It is easy to interfere with other surrounding electronic equipment, and even cause harm to the human body

All in all, the existing technology is still difficult to realize the simultaneous wireless charging of multiple electronic devices in a three-dimensional area over a long distance

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