Wireless Power Resonators With In-Band Out-of-Band Communication
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Solution Overview
Problem
Wireless energy transfer technologies face challenges in efficiency, practicality, safety, and cost, making it difficult to deploy in various environments, limiting its widespread use.
Innovation Solution
The use of coupled resonators for wireless energy transfer, with methods involving in-band and out-of-band communication channels to manage power transfer, prioritize devices based on demand, and adjust impedance to optimize energy exchange, while incorporating resonators with high-Q factors and controlled impedance matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless energy transfer is deployed using conventional methods, then energy transfer capability is achieved, but efficiency and practicality are insufficient
Solution Approach 1:
The patent applies parameter changes by utilizing resonant frequency matching between transmitter and receiver coils. By tuning the operating parameters (frequency, impedance) to match resonant conditions, the system achieves significantly improved energy transfer efficiency while maintaining practical reliability in real-world deployments
2Adaptability or versatility
If multiple wireless power devices are served simultaneously, then service coverage is improved, but power management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors the status, power demands, and coupling conditions of multiple wireless power devices. Based on this feedback, the controller dynamically adjusts power distribution, prioritizes devices according to demand and coupling strength, and manages power allocation efficiently, thereby handling multiple devices without proportionally increasing management complexity
3Loss of information
If in-band communication is used for power transfer signaling, then communication efficiency is improved, but signal interference with power transfer increases
Solution Approach 1:
The patent introduces an intermediary approach by using the electromagnetic field itself as a dual-purpose medium. The same magnetic field used for wireless power transfer also carries communication signals through magnetic field modulation. This intermediary use of the shared medium enables efficient communication without requiring separate communication channels, while the system manages interference through careful signal design and processing
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
Enhances the efficiency and practicality of wireless energy transfer by enabling effective power management and optimization, ensuring safe and cost-effective deployment in diverse environments.
Implementation Method 1
The signal can be a power transfer signal with a frequency approximately equal to a resonant frequency of the wireless power source
Implementation Method 2
Energy or power may be transferred wirelessly using a variety of known radiative, or far-field, and non-radiative, or near-field, techniques
Implementation Method 3
modulating, by the wireless power device, the impedance of the wireless power device based on the coupling factor
Data Source
AI summary
Improved configurations for wireless energy transfer can include system elements of a wireless energy transfer system that may pair in-band and out-of-band communication channels by exchanging related information. Energy transfer signals may be modulated according to defined waveforms. Information about the signal may be transmitted using an out-of-band communication channel. A system element that receives both the signal and information may verify that they correspond to the same system element.