Wireless Power Resonator with Mode-Adaptive Path Controller
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Solution Overview
Problem
Current wireless power transmission systems face inefficiencies due to random distribution of magnetic fields, which affects impedance matching and power transmission efficiency, especially when the strength of the magnetic field decreases within the resonator but increases outside, making it difficult to maintain consistent power transfer.
Innovation Solution
The electronic device incorporates a resonator capable of operating in multiple modes (power reception, relay, and transmission) with a path controller and a power converter that converts DC to AC using resonance frequency, along with a control/communication unit to manage the magnetic field distribution and impedance matching by adjusting the size of the feeder and resonator structures, ensuring uniform magnetic field distribution and efficient power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional wireless power transmission system uses a resonator with random magnetic field distribution, then the system structure is simple, but the power transmission efficiency is poor and impedance matching is difficult
Solution Approach 1:
The patent applies local quality by creating a non-uniform magnetic field distribution within the resonator, where the magnetic field strength is intentionally concentrated in specific regions rather than being randomly distributed. This is achieved through the specific resonator structure and feeding unit configuration, which generates a magnetic field with higher density in certain areas to improve power transmission efficiency while maintaining overall system simplicity
Solution Approach 2:
The patent implements dynamics by making the magnetic field distribution controllable and adjustable. The feeding unit can dynamically adjust the magnetic field characteristics based on the operating mode (power reception, relay, or power transmission), allowing the system to optimize power transmission efficiency adaptively without requiring complex structural changes
2Reliability
If the magnetic field strength decreases within the resonator but increases outside, then the resonator can be simple in structure, but impedance matching becomes difficult and power transfer consistency is poor
Solution Approach 1:
The patent applies feedback through the control/communication unit that monitors the operating conditions and adjusts the feeding unit parameters accordingly. The system receives information about the operating mode from the wireless power transmitter or receiver and automatically adjusts the magnetic field distribution to maintain optimal impedance matching and consistent power transfer, eliminating the need for manual impedance matching adjustments
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the magnetic field characteristics (strength, distribution, and configuration) based on the operating mode. The feeding unit modifies the excitation parameters to the resonator, changing the magnetic field profile from uniform to non-uniform distribution, which improves impedance matching and power transfer consistency without requiring separate matching networks
3Adaptability or versatility
If the resonator operates in multiple modes (power reception, relay, and power transmission), then the system versatility is improved, but the control complexity increases
Solution Approach 1:
The patent applies universality by designing the resonator and feeding unit to perform multiple functions across different operating modes. The same resonator structure can operate in power reception mode, relay mode, and power transmission mode, with the feeding unit adapting its configuration to support each mode. This multi-functionality is achieved without requiring separate dedicated structures for each mode, maintaining control system simplicity
Solution Approach 2:
The patent implements self-service through the autonomous operation of the resonator system. The control/communication unit automatically determines the operating mode based on communication with the wireless power transmitter or receiver and adjusts the feeding unit parameters accordingly without external intervention. The system self-regulates the magnetic field distribution and impedance matching based on the detected operating conditions, reducing control complexity
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 enhances power transmission efficiency by maintaining a consistent magnetic field strength within the resonator, allowing for reliable and efficient wireless power transfer to multiple devices, regardless of their location, and reduces the need for separate matching networks.
Implementation Method 1
Wireless power refers to energy that is transferred from a wireless power transmitter to a wireless power receiver through magnetic coupling
Implementation Method 2
Magnetic coupling or resonance coupling may be formed between the source resonator and the target resonator
Implementation Method 3
Magnetic coupling or resonance coupling may be formed between the source resonator and the target resonator
Implementation Method 4
a power converter configured to convert direct current (DC) voltage to alternating current (AC) voltage using a resonance frequency
Data Source
AI summary
An electronic device and method for transmitting and receiving a wireless power are provided. An electronic device for transmitting and receiving wireless power may include a resonator configured to operate, based on a plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode, wherein: (i) in the power reception mode, the resonator is configured to receive power from a wireless power transmitter, (ii) in the relay mode, the resonator is configured to relay power received from the wireless power transmitter to a wireless power receiver, and (iii) in the power transmission mode, the resonator is configured to transmit power to the wireless power receiver; and a path controller configured to control at least one electrical pathway of electronic device based on the operating mode.