Wireless Charging System with Dynamic Mode Selection
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Solution Overview
Problem
Existing wireless charging systems based on magnetic induction are limited to short ranges due to sensitivity to coil distance and position, and lack adaptability to different charging modes supported by user devices, leading to inefficient energy transfer.
Innovation Solution
A wireless charging system that automatically selects the most efficient charging mode by receiving information on supported modes from the user device via wireless communication, using multiple charging standards (WPC, PMA, A4WP) and switching between them to ensure optimal power transmission, with a controller managing the process and storing transmission efficiency data for future use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic induction mode is used for wireless charging, then power can be transmitted wirelessly, but transmission efficiency suddenly reduces when coils have slight distance or deviation
Solution Approach 1:
The wireless charging system is designed to support multiple charging modes (magnetic induction mode and electromagnetic resonance mode) within a single device. The controller automatically selects the appropriate mode based on the charging scenario, enabling the system to function effectively both at close range and at farther distances, thus resolving the contradiction between transmission efficiency and distance/position tolerance.
Solution Approach 2:
The system dynamically switches between magnetic induction mode and electromagnetic resonance mode based on real-time conditions such as distance and position alignment. This dynamic adaptation allows the system to maintain optimal transmission efficiency across varying operational conditions, overcoming the static limitation of single-mode systems.
2Adaptability or versatility
If single charging mode is used in wireless power transmitter, then device complexity is reduced, but adaptability to different user devices is limited
Solution Approach 1:
The wireless power transmitter incorporates multiple charging modes (magnetic induction and electromagnetic resonance) to achieve universal compatibility with different user devices. The controller intelligently selects the appropriate mode based on device characteristics and charging requirements, providing broad adaptability while managing complexity through automated mode selection rather than requiring manual configuration.
Solution Approach 2:
The system performs automatic mode selection and switching without user intervention. The controller autonomously determines the optimal charging mode based on detected device parameters and charging conditions, eliminating the need for users to manually configure or understand different charging standards, thus reducing operational complexity while maintaining high adaptability.
3Productivity
If user manually selects charging mode, then charging efficiency can be optimized, but ease of operation is reduced
Solution Approach 1:
The wireless charging system automatically detects device characteristics and selects the optimal charging mode without user intervention. The controller autonomously manages mode switching between magnetic induction and electromagnetic resonance based on real-time conditions, maintaining high charging efficiency while simplifying operation for the user.
Solution Approach 2:
The system continuously monitors charging conditions and device parameters, using this feedback to dynamically adjust and select the most efficient charging mode. This closed-loop control ensures optimal charging efficiency is maintained automatically, eliminating the need for manual mode selection while preserving productivity.
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 efficient wireless power transmission to user devices regardless of the supported charging mode, extending the range and reliability of wireless charging by automatically selecting the highest efficiency mode, even when the user is unaware of the device's supported modes.
Implementation Method 1
a magnetic induction mode that induces a current from one coil to another coil through a magnetic field
Implementation Method 2
a non-radial energy transfer mode based on coupling of attenuation waves of a resonance field. The non-radial energy transfer mode uses the fact that two resonators having the same frequency do not affect other non-resonators therearound but have a tendency to be coupled with each other
Data Source
AI summary
A wireless charging system for a variable charging mode includes: an information receiver configured to receive information about a wireless power receiver including a wireless charging mode that is supported by the wireless power receiver through a wireless communication connected to the wireless power receiver; wireless power transmitting units configured to wirelessly transmit power by a plurality of different wireless charging modes; and a controller configured to control the wireless power transmitting units to wireless transmit power by the wireless charging mode corresponding to the received information.