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WirelessChargingPlane

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Registration number:G20250762

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Key words: Wireless transmission technology wireless charging electromagnetism

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Publisher:管理人员

Release time:2025-08-09 08:59:45.0

  • Essential information
Name of achievement: WirelessChargingPlane
Result registration number: G20250762 Subject classification:
Green classification: Item keywords: Wireless transmission technology   wireless charging   electromagnetism    
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Tongji University

The stage of achievement:
Mode of cooperation: Outcome Information:
Countries/regions: China Intellectual property rights: Invention patent, others
Introduction: Click to view
Metamaterial materials and wireless power transmission technology are two hot research areas in the international electromagnetic community, both in theory and application. The former has been repeatedly selected as one of the top ten global scientific and technological advancements of the year due to numerous unique applications such as negative refraction, superlenses, and electromagnetic invisibility. The latter has also received widespread attention from research institutions and the industrial sector since 2006, due to its applications in wireless charging of electric vehicles, mobile phones (such as the latest Samsung S6, LG, etc.), and other mobile devices. The innovation of this project lies in combining these two hot research areas, utilizing the strong control ability of metamaterial materials over electromagnetic fields to regulate the quasi-static electromagnetic field during wireless power transmission. In our preliminary work, we have obtained the efficiency enhancement of metamaterial materials in wireless power transmission and the mechanism of spatial magnetic field regulation, forming several academic papers and one authorized invention patent. Two publicly disclosed patents. Typical achievements include: (1) Wireless charging plane with magnetic field strength and field distribution control effects (Application Publication No.: CN104362767A). This invention relates to a wireless charging plane with magnetic field strength and field distribution control effects, which utilizes the mutual coupling of magnetic resonance evanescent field lines for wireless energy transmission, exhibiting the maximum real part of equivalent magnetic permeability at the system's operating frequency. Compared to the existing technology, this invention employs two identical MMT material components with specific resonant frequencies. At medium and short distances, resonance occurs due to the same resonant frequency, facilitating energy transfer. The addition of MMT material components significantly enhances the transmission efficiency of the new system; the system can also maintain good transmission performance even in the presence of certain dislocations; the MMT materials within the system possess sub-wavelength characteristics, and the resulting surface magnetic field is relatively uniform. It is conducive to achieving multi-objective efficient charging. (2) A wireless energy transmission system based on the magnetic focusing effect in Metamaterial (Application Publication Number: CN104767284A) This invention discloses a wireless energy transmission system based on the magnetic focusing effect in Metamaterial, which mainly solves the problem of low energy transmission efficiency at long distances in existing electromagnetic induction coupling type wireless energy transmission devices. Compared with the existing technology, this invention has advantages such as instant transmission, directionality, controllability, non-radiation, miniaturization, high efficiency, medium to long distance, non-radiation, simple process, and low cost.
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