Wireless Power Resonator Frequency Control for Adaptive Charging
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Solution Overview
Problem
Existing wireless charging technologies require fixed settings for efficient operation, leading to reduced efficiency or inability to charge when the object or environment changes, such as position variations.
Innovation Solution
A wireless power transmission apparatus with a resonator, inverter, and resonant frequency controller that adjusts resonant frequency and capacitance in response to changes in operating frequency and required power, allowing adaptive power transmission across varying charging characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed settings are used for wireless charging, then wireless charging efficiency is maintained under ideal conditions, but wireless charging efficiency decreases significantly when objects or environments change
Solution Approach 1:
The patent implements dynamic frequency adjustment by making the resonant frequency of the resonator variable rather than fixed. The resonant frequency controller continuously adjusts the resonant frequency in response to changes in operating frequency, enabling the system to adapt to varying charging conditions and maintain optimal power transfer efficiency across different scenarios.
Solution Approach 2:
The patent changes the resonant frequency parameter of the resonator to match variations in operating frequency. By dynamically adjusting the resonant frequency parameter in response to operating frequency changes, the system maintains resonance conditions and prevents efficiency degradation when charging characteristics change.
2Loss of energy
If resonant frequency is adjusted dynamically, then wireless charging efficiency is maintained under varying conditions, but device complexity increases
Solution Approach 1:
The patent implements a feedback control mechanism where the resonant frequency controller monitors changes in operating frequency and automatically adjusts the resonant frequency accordingly. This closed-loop feedback system maintains optimal resonance conditions without requiring complex external intervention, balancing adaptability with manageable system complexity.
3Productivity
If operating frequency is changed to match power requirements, then power transmission efficiency improves, but resonant frequency mismatch occurs
Solution Approach 1:
The patent makes the resonant frequency dynamic by linking it to the operating frequency through the resonant frequency controller. When the operating frequency changes to match power requirements, the resonant frequency automatically adjusts to maintain the resonance condition, ensuring both power transmission efficiency and resonance stability are maintained simultaneously.
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
Enables efficient wireless power transmission even with changing charging characteristics, such as different positions or types of wireless power reception apparatuses, by dynamically adjusting operating and resonant frequencies to maintain optimal voltage gain.
Implementation Method 1
a resonator configured to be magnetically coupleable to a wireless power reception apparatus
Implementation Method 2
a resonant frequency controller configured to control a resonant frequency of the resonator in response to a change in operating frequency of the inverter
Data Source
AI summary
A wireless power transmission apparatus includes a resonator configured to be magnetically coupleable to a wireless power reception apparatus; an inverter configured to operate the resonator; and a resonant frequency controller configured to control a resonant frequency of the resonator in response to a change in operating frequency of the inverter.