Wireless Power Reception Modulation for Signal Distortion Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing contactless charging systems experience communication errors due to signal distortion when strong wireless power signals are transmitted, leading to potential fire hazards and battery degradation.
Innovation Solution
A wireless power reception device that modulates the amplitude of wireless power signals based on their strength using a modulator comprising resistors and transistors, such as MOSFETs, to maintain smooth communication with the wireless power transmission device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the intensity of the wireless power signal transmitted from the wireless power transmitting apparatus increases, then the power transmission efficiency is improved, but distortion occurs in the modulated signal causing communication errors
Solution Approach 1:
The patent applies dynamics by making the modulation depth adjustable and variable. The modulation depth is dynamically adapted based on the intensity of the wireless power signal received. When the power signal intensity increases, the modulation depth is reduced to prevent signal distortion, and when the power signal intensity decreases, the modulation depth is increased to maintain communication effectiveness. This dynamic adjustment resolves the contradiction between power transmission efficiency and communication reliability.
Solution Approach 2:
The patent changes the modulation depth parameter in response to changes in wireless power signal intensity. By monitoring the power signal strength and adjusting the modulation depth parameter accordingly, the system maintains optimal communication conditions across varying power transmission levels. This parameter adaptation prevents signal distortion at high power levels while ensuring sufficient modulation visibility at lower power levels.
2Ease of operation
If a contact type charging method is used, then the charging connection is established, but an instant discharge phenomenon occurs and fire may occur when foreign materials are accumulated
Solution Approach 1:
The patent introduces a magnetic field as an intermediary medium for power transmission, eliminating direct physical contact between the charger and battery terminals. The wireless power transmitting apparatus generates a magnetic field that induces current in the wireless power reception device, thereby transferring power without physical connection. This intermediary approach eliminates the fire hazards and instant discharge problems associated with traditional contact-based charging while maintaining effective power transfer.
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
Prevents signal distortion and ensures stable communication even with strong wireless power signals, reducing the risk of fire and extending battery life.
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
at least one secondary core receiving a wireless power signal transmitted 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.