Wireless Power Antenna Plate for Leakage Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems using magnetic resonance face challenges in simultaneously enhancing power transmission efficiency while complying with radio wave protection guidelines due to leakage magnetic fields.
Innovation Solution
Incorporating a plate-like metal member disposed radially around the antenna coil, with its plate face crossing the direction of the conductive member, to suppress electric field energy conversion and enhance magnetic field energy, thereby improving power transmission efficiency while adhering to radio wave protection guidelines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If magnetic resonance is used for wireless power transmission, then power transmission efficiency is improved by increasing magnetic field energy, but radio wave protection guidelines are violated due to leakage magnetic field
Solution Approach 1:
A plate-like member is introduced as an intermediary element between the antenna coil and the surrounding environment. This plate-like member selectively interacts with the electromagnetic fields generated by the antenna coil, allowing magnetic field energy to pass through while blocking or redirecting electric field leakage, thus mediating between power transmission efficiency and radio wave protection requirements
Solution Approach 2:
The plate-like member is positioned at specific locations around the antenna coil where electric field leakage is most problematic. By locally addressing the harmful electric field regions rather than uniformly shielding all directions, the invention maintains magnetic field energy for power transmission while selectively suppressing electric field leakage in critical areas
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
This configuration increases magnetic field energy without increasing electric power supply, effectively improving power transmission efficiency and ensuring compliance with radio wave protection guidelines by reducing electric field leakage.
Implementation Method 1
wireless power transmission systems using magnetic resonance
Implementation Method 2
a plate-like member containing metal, disposed in surroundings of the antenna coil
Data Source
AI summary
A wireless power transmission antenna apparatus (100, 200) is mounted on a wireless power transmitting apparatus configured to transmit electric power in a wireless manner, and is provided with: an antenna coil (10) obtained by winding a conductive member; and a plate-like member (21, 22, 23, 24) containing metal, disposed in surroundings of the antenna coil and in a radial direction of the antenna coil. The plate-like member is disposed such that a plate face thereof crosses a direction of extension of the conductive member. According to the wireless power transmission antenna apparatus, it is possible to improve power transmission efficiency while complying with radio wave protection guidelines.