Wireless Charging Receiver Modulation Against Signal Distortion
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Solution Overview
Problem
In contactless charging systems, the increased intensity of wireless power signals leads to signal distortion, causing communication errors between the wireless power transmission and reception devices.
Innovation Solution
A wireless power reception device that modulates the amplitude of the received wireless power signal based on its strength using a modulator, which can include resistors and transistors, such as MOSFETs, to prevent distortion and ensure smooth communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the intensity of wireless power signal is increased to improve power transmission efficiency, then power transmission efficiency is improved, but signal distortion occurs causing communication errors
Solution Approach 1:
The patent introduces an amplitude modulation process as an intermediary mechanism between the wireless power signal and the communication signal. The modulator adjusts the amplitude of the communication signal based on the received power signal strength, preventing direct distortion while maintaining reliable communication even when power transmission intensity is increased
2Object-affected harmful factors
If contactless charging is implemented to eliminate contact discharge problems, then safety and battery life are improved, but signal distortion and communication errors occur
Solution Approach 1:
The amplitude modulation mechanism serves as an intermediary that decouples the power transmission function from the communication function. By modulating the communication signal amplitude according to power signal strength, the system eliminates contact discharge hazards while preventing communication errors caused by signal distortion
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 allows for effective communication between the wireless power transmission and reception devices even when strong wireless power signals are transmitted, preventing signal distortion and maintaining communication integrity.
Implementation Method 1
a contactless charging method of charging the battery cell with wireless power induced by a magnetic field generated from a primary coil of a wireless power transmitting apparatus
Implementation Method 2
receiving a wireless power signal from a wireless power transmission device
Data Source
AI summary
A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.