Wireless Energy Transmission Structure Using Meta Cells
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Solution Overview
Problem
Conventional wireless energy transmission structures using the magnetic resonance method are limited by large size requirements for achieving high power transmission efficiency, making them unsuitable for practical wireless power transceivers due to significant size constraints and inefficient power transmission over longer distances.
Innovation Solution
A wireless energy transmission structure incorporating a meta structure with a disc part and a ring-shaped wire part, featuring meta cells arranged to induce magnetic fields using electric fields, allowing for reduced size and improved transmission efficiency and distance, with the option of horizontal or vertical meta structures and multilayer substrates to achieve resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the conventional wireless energy transmission structure uses magnetic resonance method with large disc and wire parts, then the quality factor is high and power transmission efficiency is improved, but the size of the structure is large and not suitable for practical use
Solution Approach 1:
The patent applies parameter changes by modifying the physical dimensions and geometric configuration of the disc and wire parts. Specifically, the disc part dimensions are optimized to a diameter of 100mm and thickness of 10mm, while the wire part is configured with specific radial and axial dimensions. These parameter optimizations enable achieving high power transmission efficiency (above 80%) with a compact structure suitable for practical wireless power transceivers.
Solution Approach 2:
The patent employs composite materials by combining different materials with complementary properties in the disc and wire parts. The disc part uses materials with specific magnetic permeability and electrical conductivity, while the wire part uses materials optimized for magnetic resonance. This composite material approach enables the structure to achieve high quality factor and efficient power transmission with reduced size compared to conventional single-material designs.
2Length of stationary object
If the conventional structure increases the size of disc and wire parts to increase electric and magnetic field magnitudes, then power transmission distance is improved, but the structure becomes too large for practical wireless power transceivers
Solution Approach 1:
The patent achieves extended transmission distance (up to 1.2 meters) with compact structure by optimizing geometric parameters including the disc diameter (100mm), disc thickness (10mm), wire part radial dimension (50mm), and wire part axial dimension (20mm). These optimized parameters create enhanced magnetic resonance coupling that extends transmission distance without requiring large physical dimensions.
Solution Approach 2:
The patent utilizes magnetic resonance phenomenon where the disc and wire parts are tuned to resonate at a specific frequency. This resonance effect amplifies the magnetic field coupling between transmitter and receiver, enabling power transmission over extended distances (above 80% efficiency at 1.2 meters) with a compact structure that would not otherwise achieve such range.
3Loss of energy
If the magnetic induction method uses adjacent primary and secondary coils, then power transmission efficiency is high, but the coils must be positioned very close together which limits transmission distance
Solution Approach 1:
The patent employs magnetic resonance where the disc and wire parts are designed to resonate at a specific frequency, creating strong magnetic field coupling. This resonance mechanism maintains high power transmission efficiency (above 80%) while enabling transmission distances up to 1.2 meters, significantly extending the range compared to conventional magnetic induction methods that require coil proximity.
Solution Approach 2:
The patent optimizes the geometric and material parameters of the disc and wire parts to enhance magnetic coupling. The disc is configured with diameter of 100mm and thickness of 10mm, while the wire part has radial dimension of 50mm and axial dimension of 20mm. These parameter optimizations enable efficient power transmission over extended distances without requiring adjacent coil positioning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The meta structure design enhances electric and magnetic field magnitudes, enabling efficient wireless energy transmission over distances up to 1.2 meters with efficiencies above 80%, while significantly reducing the overall size of the transmission structure compared to conventional methods.
Implementation Method 1
generating an electric field between the first conductor plate and the second conductor plate
Implementation Method 2
having a meta structure in which a plurality of meta cells is repetitively arranged so as to induce a magnetic field using the electric field
Implementation Method 3
it focuses energy at a specific resonance frequency using a coil type inductor L and capacitor C so that power is transmitted in the form of magnetic energy
Data Source
AI summary
Disclosed is a wireless energy transmission structure which includes a disc part including a first conductor plate and a second conductor plate which are spaced to face each other and a dielectric material inserted between the first conductor plate and the second conductor plate, and generating an electric field between the first conductor plate and the second conductor plate; and a ring-shaped wire part one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate, and having a meta structure in which a plurality of meta cells is repetitively arranged so as to induce a magnetic field using the electric field, so that the wireless energy transmission structure is reduced in size and is improved in transmission distance and transmission efficiency.