Wireless Charging Receiver Switching Between Induction and Resonance
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Solution Overview
Problem
Current wireless charging technologies, such as magnetic induction and magnetic resonance schemes, operate on different resonance frequencies and communication protocols, making them incompatible and limiting their ability to switch between standards for efficient power transmission.
Innovation Solution
A wireless charging device with a switching unit controlled by a receiving module that compares frequency bands and standards to selectively switch between magnetic induction (WPC/PMA) and magnetic resonance (A4WP) schemes, allowing operation in both standards through a time division multiplexing scheme.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a wireless charging device uses a single receiving module designed for one specific standard (magnetic induction or magnetic resonance), then the device complexity is reduced, but the adaptability to different wireless charging standards deteriorates
Solution Approach 1:
The receiving module is divided into multiple independent receiving units, each designed to support a specific wireless charging standard (e.g., one unit for magnetic induction at 110-282 KHz, another for magnetic resonance at 6.78 MHz or 13.56 MHz). Each unit can independently receive and process power according to its designated standard, enabling the device to handle multiple standards without increasing overall structural complexity significantly.
Solution Approach 2:
The receiving module is designed with multi-functionality to support both magnetic induction and magnetic resonance standards. By integrating multiple receiving units within a single module structure, the system achieves universal compatibility with different wireless charging standards while maintaining a unified control architecture that manages switching between standards.
2Productivity
If the switching unit operates at high frequency to quickly switch between standards, then the charging efficiency is improved, but the loss of energy during switching operations increases
Solution Approach 1:
The switching unit operates using periodic action with predetermined switching intervals. Instead of continuous high-frequency switching, the system switches between receiving units at specific time intervals based on the detected wireless charging standard. This periodic switching approach maintains charging efficiency by minimizing unnecessary switching operations while reducing energy loss by avoiding excessive switching frequency.
3Adaptability or versatility
If the receiving module continuously monitors frequency bands to identify the correct standard, then the adaptability to different standards is improved, but the use of energy for monitoring and processing increases
Solution Approach 1:
The receiving module performs preliminary frequency band monitoring and standard identification before actual power reception begins. By detecting the wireless charging standard in advance and preparing the appropriate receiving unit beforehand, the system avoids continuous monitoring during power reception, thereby reducing overall energy consumption while maintaining full adaptability to different standards.
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 seamless operation in both magnetic induction and magnetic resonance standards, enhancing compatibility and efficiency by controlling the switching operation based on frequency and standard matching, thereby facilitating universal wireless charging compatibility.
Implementation Method 1
a first receiving module receiving power from the outside in a magnetic induction scheme to thereby charge a battery
Implementation Method 2
a second receiving module receiving power from the outside in a magnetic resonance scheme to thereby charge the battery
Data Source
AI summary
There are provided a wireless charging device and a control method thereof, the wireless charging device including: a first receiving module receiving power from the outside in a magnetic induction scheme to thereby charge a battery; a second receiving module receiving power from the outside in a magnetic resonance scheme to thereby charge the battery; a switching unit performing a switching operation at a preset interval such that one of the first receiving module and the second receiving module is selected; and a switching controlling unit receiving a stop signal or an operating signal from one of the first receiving module and the second receiving module to thereby control the switching operation of the switching unit.