Wireless Power Relay Resonator Route Selection
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Solution Overview
Problem
Current wireless power transmission systems face limitations in distance and efficiency due to the use of only two resonators, which restricts the effective transfer of power and can be affected by changes in coupling coefficients, distance, and impedance mismatching.
Innovation Solution
The implementation of a method that searches for optimal power transfer routes through multiple relay resonators, converts these routes into two-port networks, calculates transmission efficiency based on ABCD matrices, and selects the route with the highest efficiency for power transmission, while deactivating unnecessary resonators to enhance power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only two resonators are used in wireless power transmission, then the system structure is simple, but the transmission distance and efficiency are limited
Solution Approach 1:
The patent segments the power transmission path by introducing multiple relay resonators between the source and target devices. Each relay resonator acts as an intermediate segment that extends the overall transmission distance while maintaining efficient magnetic coupling at each stage, thereby resolving the contradiction between simple structure and transmission efficiency.
Solution Approach 2:
Relay resonators serve as intermediary elements that facilitate power transfer over extended distances. These intermediate resonators mediate the magnetic coupling between source and target, enabling efficient power transmission beyond the direct coupling range of a two-resonator system.
2Loss of energy
If multiple relay resonators are introduced to extend transmission distance, then power transfer efficiency improves, but device complexity increases
Solution Approach 1:
The system divides the transmission path into multiple manageable segments, each handled by a relay resonator. This segmentation allows the complex task of long-distance power transfer to be broken down into simpler, repeated coupling operations between adjacent resonators.
Solution Approach 2:
Each relay resonator performs the same fundamental function of magnetic coupling and power transfer, making them universal components that can be replicated and configured in different arrangements to meet various transmission requirements without redesigning the entire system.
3Reliability
If the coupling coefficient changes due to distance or positioning, then power transmission stability deteriorates, but system adaptability is required
Solution Approach 1:
The system incorporates feedback mechanisms that monitor the coupling conditions between resonators and dynamically adjust operating parameters such as frequency and power levels. This feedback enables the system to maintain stable power transmission despite changes in distance or positioning by compensating for coupling coefficient variations.
Solution Approach 2:
The system employs dynamic frequency tuning and power adjustment capabilities that allow relay resonators to adapt their operating characteristics in real-time based on changing coupling conditions, thereby maintaining transmission stability across varying distances and positions.
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 approach increases the efficiency and distance of wireless power transmission by selecting the most efficient route through relay resonators, thereby overcoming limitations in existing systems and improving overall power transfer performance.
Implementation Method 1
Magnetic coupling or resonant coupling may be formed between the source resonator and the target resonator
Implementation Method 2
Magnetic coupling or resonant coupling may be formed between the source resonator and the target resonator
Implementation Method 3
A plurality of routes may be determined, and a transmission efficiency of the plurality of routes may be calculated so that power may be transmitted through a selected route
Data Source
AI summary
A wireless power transmission method includes searching for one or more routes to be used to transmit power to a reception resonator through one or more relay resonators, and converting the routes to respective one or more two-port networks. The method further includes calculating a transmission efficiency of each of the routes based on the two-port networks, and selecting a route with a highest transmission efficiency from the routes. The method further includes wirelessly transmitting power to the reception resonator through the selected route.