Wireless Power Coil Control Circuit for In-Band Communication Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless power transmission, in-band communication is deteriorated due to load conditions and external noise, leading to failed packet reception and potential interruptions in wireless power transmission.
Innovation Solution
An electronic device with a coil and control circuit that transmits power using a first frequency, adjusts the amplitude or frequency if a packet is not received within a reference time, and continues transmission based on the changed parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If in-band communication is used during wireless power transmission, then data communication function is achieved, but communication reliability deteriorates due to load conditions and external noise
Solution Approach 1:
The patent implements dynamic adjustment of power transmission parameters (amplitude and frequency) based on packet reception status. When packets are not received within the reference time, the system automatically changes the transmission parameters to improve communication reliability, transforming a static power transmission system into a dynamic adaptive one that responds to communication conditions
Solution Approach 2:
The system establishes a feedback mechanism where the transmitting device monitors packet reception from the receiving device and uses this information to adjust power transmission parameters. The reference time threshold and parameter adjustment logic form a closed-loop control system that continuously optimizes communication reliability based on actual reception performance
2Reliability
If power transmission parameters are adjusted to improve packet reception, then communication stability is enhanced, but power transmission efficiency may vary
Solution Approach 1:
The patent changes physical parameters of power transmission (amplitude and frequency) to resolve communication issues. By adjusting these parameters dynamically based on packet reception within the reference time, the system optimizes the balance between communication stability and power transmission efficiency, using parameter variation as the primary control mechanism
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 method improves communication reliability and prevents interruptions in wireless power transmission by adapting power and frequency to ensure packet reception, enhancing the stability of the in-band communication environment.
Implementation Method 1
a control circuit electrically connected to the coil, configured to transmit power to an external device via the coil by using a first frequency belonging to a first frequency band
Data Source
AI summary
An electronic device includes a coil, and at least one control circuit electrically connected to the coil. The control circuit is configured to transmit power to an external device via the coil by using a first frequency belonging to a first frequency band, receive a packet related with wireless charging from the external device via the coil, in response to having failed to receive the packet within a first reference time, change at least one of an amplitude of the power transmitted or the first frequency used for the transmitting of the power, and to transmit power to the external device via the coil on the basis of the at least one of the changed transmit power or the changed frequency.