Wireless Charging Coil Alignment via Multi-Position Feedback
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Solution Overview
Problem
Current wireless charging technologies face inefficiencies due to misalignment of charging coils, leading to reduced charging efficiency, especially when the coils are offset in the X or Y direction, and existing alignment methods are not universally applicable across different device structures.
Innovation Solution
A method and device for controlling wireless charging that involves acquiring charging quality at multiple positions, determining relative position information, and using position correction information to adjust the wireless charging receiver's position for optimal alignment with the transmitter coil, improving charging efficiency by guiding the user through prompt messages and graphical interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless charging is performed without position alignment correction, then the charging process is simple and fast, but the charging efficiency is reduced due to coil misalignment
Solution Approach 1:
The patent implements feedback by measuring charging quality at multiple positions (current position, first preset position, second preset position) and using this information to determine relative position information. The system provides prompt messages to guide user adjustment based on measured charging quality, creating a closed-loop feedback mechanism that improves charging efficiency while keeping the control process manageable through simple iterative adjustments.
Solution Approach 2:
The system enables self-service by automatically detecting charging quality at different positions and generating position correction information without requiring external intervention. The charging device itself performs the measurement, analysis, and guidance functions, allowing the user to simply follow the prompt messages to achieve optimal alignment.
2Productivity
If the charging coils are precisely aligned within ±2mm, then charging efficiency is optimized, but the complexity of position correction increases
Solution Approach 1:
The patent applies preliminary action by measuring charging quality at preset positions before final charging begins. The system performs position detection and calculates relative position information in advance, providing correction guidance before the actual charging process starts. This allows users to adjust coil positions beforehand, achieving precise alignment without adding complexity during the charging operation itself.
Solution Approach 2:
The system uses partial action by measuring charging quality at specific preset positions rather than continuously monitoring all possible positions. By selecting key measurement points (current position, first preset position, second preset position), the system achieves sufficient alignment precision within ±2mm without requiring exhaustive measurement, balancing precision requirements with operational simplicity.
3Measurement precision
If multiple charging quality measurements are performed at different positions, then accurate position information is obtained, but the charging time increases
Solution Approach 1:
The patent performs position detection measurements as preliminary actions before the main charging process. By completing all necessary position measurements and calculations in advance, the system ensures accurate position information is obtained without delaying the actual charging operation. The measurements are integrated into the charging initiation phase, making the precision measurement process feel instantaneous to the user.
Solution Approach 2:
The system uses periodic action by measuring charging quality at discrete preset positions in a structured sequence. Rather than continuous monitoring, the system periodically samples charging quality at specific locations (current position, first preset position, second preset position), which reduces measurement time while maintaining sufficient detection accuracy for position correction.
4Manufacturing precision
If position correction is implemented through user guidance, then alignment accuracy improves, but the ease of operation decreases
Solution Approach 1:
The patent introduces an intermediary by using prompt messages as a communication bridge between the charging device and the user. The system translates complex position detection data into simple directional guidance (first preset direction, second preset direction), acting as an intermediary that converts technical measurement information into user-friendly instructions. This maintains alignment accuracy while preserving ease of operation through intuitive guidance.
Solution Approach 2:
The system replaces manual trial-and-error alignment with an automated measurement and guidance system. Instead of relying on users to physically adjust coils based on guesswork, the patent substitutes mechanical adjustment with electronic measurement of charging quality and automated generation of correction directions. This substitution maintains high alignment accuracy while simplifying user interaction to simple directional movements.
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 approach effectively enhances charging efficiency by aligning the charging coils within a range of ±2mm, optimizing user experience and reducing heat generation while improving safety.
Implementation Method 1
wireless charging technology
Implementation Method 2
charging coil
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A method and a device for controlling wireless charging are provided. The method includes: acquiring (S101) charging quality of a wireless charging receiver at a current position relative to a wireless charging transmitter; acquiring charging qualities of the wireless charging receiver respectively at a first (S102) and a second (S103) preset positions; determining (S104) relative position information of the wireless charging receiver relative to the wireless charging transmitter, based on the charging qualities at the current position, and at the first and second preset positions; acquiring (S105) position correction information of the wireless charging receiver corresponding to the relative position information; and upon correction of a position of the wireless charging receiver based on the position correction information, charging (S106) the wireless charging receiver at the corrected position.