Wireless Charging Resonator with Dynamic Mode Switching
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Solution Overview
Problem
Magnetic resonance-based wireless power transmission systems are limited by the size of the resonator, restricting the transmission distance and efficiency, making it challenging to transmit radio energy over intermediate to longer distances effectively.
Innovation Solution
An energy charging apparatus and method that incorporates a transponder and resonator as single modules, capable of switching between high frequency magnetic resonance and low frequency magnetic induction modes, allowing for flexible radio energy transmission and reception, and includes a battery for energy storage and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the resonator diameter is increased to extend transmission distance, then the transmission distance is improved, but the device size and complexity increase
Solution Approach 1:
The patent implements dynamic mode switching between magnetic resonance and magnetic induction through a mode changing switch. The system can transition between high frequency magnetic resonance mode (for longer distances) and low frequency magnetic induction mode (for shorter distances), allowing the transmission distance to be dynamically adjusted without physically changing the resonator size. This resolves the contradiction by making the system adaptable rather than requiring a larger fixed-size resonator.
Solution Approach 2:
The patent changes operating parameters (frequency and transmission mode) to achieve different transmission distances. By switching between high frequency magnetic resonance mode and low frequency magnetic induction mode, the system can extend or reduce transmission distance without altering the physical dimensions of the resonator. This parameter-based approach resolves the contradiction between transmission distance and device size.
2Length of stationary object
If magnetic resonance method is used to extend transmission distance, then the transmission distance is improved, but the transmission efficiency deteriorates
Solution Approach 1:
The patent dynamically switches between magnetic resonance mode and magnetic induction mode based on transmission distance requirements. When transmission distance is short, the system uses magnetic induction mode which has higher efficiency. When transmission distance is long, it switches to magnetic resonance mode. This dynamic adaptation resolves the contradiction by selecting the appropriate mode to minimize energy loss for each specific transmission scenario.
Solution Approach 2:
The patent changes the transmission mode parameter between magnetic resonance and magnetic induction based on the required transmission distance. For short distances, low frequency magnetic induction is selected for high efficiency. For long distances, high frequency magnetic resonance is selected despite lower efficiency. This parameter switching resolves the contradiction by optimizing the trade-off between distance and efficiency for each operating condition.
3Length of stationary object
If the resonator diameter is increased to extend transmission distance, then the transmission distance is improved, but the manufacturing cost increases
Solution Approach 1:
The patent uses dynamic mode switching between magnetic resonance and magnetic induction to achieve variable transmission distances without increasing resonator size. Since the same resonator can operate in different modes to provide different transmission ranges, there is no need to manufacture multiple resonators of different sizes, thus avoiding increased manufacturing costs while still achieving extended transmission distance when needed.
Solution Approach 2:
The patent makes the resonator multi-functional by enabling it to operate in both magnetic resonance mode and magnetic induction mode. A single resonator design serves multiple purposes: it can provide short-distance high-efficiency charging via magnetic induction and long-distance charging via magnetic resonance. This universality eliminates the need for multiple specialized resonators, reducing manufacturing complexity and cost while achieving extended transmission capability.
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 charging and transmission of radio energy over varying distances without spatial restrictions, supporting applications like wearable devices and laptops, by utilizing magnetic resonance and induction techniques for adaptable energy transfer.
Implementation Method 1
a high frequency transmitter configured to transmit high frequency radio energy to the resonator based on a magnetic resonance scheme
Implementation Method 2
a low frequency transmitter configured to transmit low frequency radio energy to the resonator based on a magnetic induction scheme
Implementation Method 3
a high frequency receiver configured to receive high frequency radio energy from the resonator based on a magnetic resonance scheme
Implementation Method 4
a low frequency receiver configured to receive low frequency radio energy from the resonator based on a magnetic induction scheme
Data Source
AI summary
Provided is an energy charging apparatus including a transponder configured to transmit and receive radio energy, and a resonator configured to transmit the radio energy transmitted from the transponder to at least one external device and transmit the radio energy received from the at least one external device to the transponder, wherein each of the transponder and the resonator is provided in a form of a single module.