Vertical Rectangular Wire Resonator for Higher Wireless Power Coupling
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Solution Overview
Problem
Wireless power transmission using the electric and magnetic field mixed coupling method faces interference from edge currents and magnetic fields, which affect coupling efficiency and lead to inefficient power transmission.
Innovation Solution
A wireless power transmission resonator with a conducting wire having a vertical rectangular cross-section, featuring a spiral structure in its elements to minimize edge currents and concentrate magnetic fields, thereby improving coupling efficiency by arranging elements in a laminating structure with multiple spiral layers and connecting them with conducting wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional conducting wire with circular or horizontal rectangular cross-section is used in the resonator, then the manufacturing is simpler, but edge currents spread and magnetic fields disperse, reducing coupling efficiency and power transmission efficiency
Solution Approach 1:
The patent applies local quality by changing the cross-sectional shape of the conducting wire to vertical rectangular, which creates different surface characteristics at different locations. This specific geometric modification concentrates the current distribution and magnetic field lines in the vertical direction, improving coupling efficiency while maintaining manufacturing feasibility through standard wire drawing processes.
2Productivity
If the resonator uses a complex spiral structure with vertical rectangular cross-section to improve coupling efficiency, then power transmission efficiency improves, but the device complexity increases
Solution Approach 1:
The patent applies dimensionality change by transitioning from traditional planar or circular cross-sections to a vertical rectangular cross-section. This geometric transformation in the cross-sectional dimension creates concentrated current and magnetic field distributions that enhance coupling efficiency, while the spiral structure itself provides the necessary three-dimensional configuration for resonant operation.
3Device complexity
If conventional resonator structures are used, then the device complexity is lower, but edge currents and magnetic field spreading reduce the coupling coefficient and transmission efficiency
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the conducting wire, specifically the cross-sectional shape from circular or horizontal rectangular to vertical rectangular. This parameter modification fundamentally alters the current distribution pattern and magnetic field concentration, thereby improving the coupling coefficient and transmission efficiency without requiring complex additional structures.
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 resonator effectively reduces edge currents, concentrates magnetic fields, and enhances power transmission efficiency by optimizing the spiral structure and power supply configuration, allowing for longer-range and more efficient power transfer.
Implementation Method 1
Wireless power transmission using an electric and magnetic field mixed coupling method may transmit power farther than wireless power transmission using a magnetic field coupling method and wireless power transmission using an electric field coupling method
Implementation Method 2
In the electric and magnetic field mixed coupling method, a sum of an electric field coefficient and a magnetic coupling coefficient may be determined to be a total coupling coefficient
Data Source
AI summary
A wireless power transmission resonator using a conducting wire with a vertical rectangular cross-section is disclosed. The wireless power transmission resonator may include a first element including a first element upper part arranged in an upper end of a resonator and a first element lower part arranged in a lower end of the resonator, wherein the first element upper part and the first element lower part each may include a spiral layer having a spiral structure that is wound to face a wide surface of a conducting wire including a vertical rectangular cross-section and a second element arranged in a center of the resonator and between the first element upper part and the first element lower part and including a spiral layer having a spiral structure that is wound to face the wide surface of the conducting wire including the vertical rectangular cross-section.