Orthogonal Unit Resonators for Directional Wireless Power Transmission
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Solution Overview
Problem
Existing wireless power transmission systems face inefficiencies due to variations in power transmission based on the orientation and location of devices, particularly in multi-device systems, where the efficiency of power transfer can differ significantly depending on the direction and position of devices relative to the source and target resonators.
Innovation Solution
A radiative wireless power transmitter and receiver system utilizing multiple unit resonators positioned in orthogonal planes to form magnetic fields in various directions, allowing for controlled resonance power transmission and reception in specific directions, with a feeding unit and matchers to manage magnetic coupling and impedance matching, ensuring efficient power transfer regardless of device orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single resonator is used for wireless power transmission, then the device structure is simple, but the power transmission efficiency varies significantly based on device orientation and location
Solution Approach 1:
The resonator system is divided into multiple unit resonators (first, second, and third unit resonators) arranged in orthogonal directions. Each unit resonator handles power transmission in a specific spatial direction, allowing the system to maintain high efficiency regardless of the target device's orientation or position without requiring a single complex resonator structure
Solution Approach 2:
The patent extends the resonator system from a single-plane configuration to a three-dimensional orthogonal arrangement. By adding resonators in x-axis, y-axis, and z-axis directions, the system creates magnetic fields in multiple dimensions, enabling efficient power transmission to devices regardless of their spatial orientation
2Loss of energy
If multiple unit resonators are used to transmit power in different directions, then power transmission efficiency is maintained across various orientations, but the device complexity increases
Solution Approach 1:
Each unit resonator is configured with specific local properties tailored to its directional function. The first, second, and third unit resonators are positioned and oriented to create magnetic fields in specific directions (x-axis, y-axis, z-axis), allowing each component to be optimized for its particular spatial role rather than requiring a uniformly complex structure
Solution Approach 2:
The multiple unit resonators collectively provide universal power transmission capability in all three spatial dimensions. While each individual resonator is relatively simple, the combination creates a multi-functional system that can efficiently transmit power to devices in any orientation, making the overall system adaptable to various configurations
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 solution enables consistent and efficient wireless power transmission and reception across various orientations and locations, maintaining high efficiency by controlling magnetic coupling and impedance matching, thus overcoming the limitations of existing systems.
Implementation Method 1
at least two first unit resonators to form a magnetic field with a target resonator based on an x-axis direction and a z-axis direction
Implementation Method 2
transmit a resonance power to the target resonator
Implementation Method 3
A radiative wireless power transmitter, including at least two first unit resonators to form a magnetic field with a target resonator
Implementation Method 4
a first matcher that is placed in a plane that is parallel with the at least two first unit resonators and that enables the at least two first unit resonators to form the magnetic field with the target resonator
Data Source
AI summary
Provided is an apparatus that may control a direction of wireless power transmission. A radiative wireless power transmitter may include at least two first unit resonators to form a magnetic field with a target resonator based on an x-axis direction and a z-axis direction, and to transmit a resonance power to the target resonator, at least two second unit resonators to form a magnetic field with the target resonator based on the x-axis direction and a y-axis direction, and to transmit a resonance power to the target resonator, at least two third unit resonators to form a magnetic field with the target resonator based on the y-axis direction and the z-axis direction, and to transmit a resonance power to the target resonator, and a feeding unit to control resonance power transmission of the at least two first unit resonators, the at least two second unit resonators, and the at least two third unit resonators.