Wireless Charging Terminal Using Network-Selected Power Supply
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Solution Overview
Problem
Existing wireless charging technologies are limited in their ability to perform contactless charging of portable devices without the need for physical contact, which can be affected by contamination and humidity, and lack flexibility in charging location and time.
Innovation Solution
A method and apparatus for wireless charging using a communication network that enables a terminal to request and receive information about available wireless power-supplying devices, allowing for selection and charging from a suitable device via a server, using methods like electromagnetic induction, resonance, or RF/microwave radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact terminals are used for charging, then electrical connection is established, but the terminals are easily contaminated by foreign substances and humidity
Solution Approach 1:
The patent replaces the mechanical contact-based charging system with a wireless charging system using electromagnetic induction. The transmitter coil generates a magnetic field that induces current in the receiver coil, eliminating the need for physical contact terminals and thereby preventing contamination issues while maintaining reliable charging.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium to transfer energy between the charger and battery. The magnetic field generated by the transmitter coil acts as a mediator to induce current in the receiver coil, enabling power transfer without direct physical contact between charging components.
2Adaptability or versatility
If wireless charging is implemented, then portability and waterproof effectiveness are improved, but charging distance and efficiency need to be optimized
Solution Approach 1:
The patent optimizes charging efficiency by adjusting key parameters including coil winding configurations, operating frequency, and magnetic core materials. These parameter changes enhance the strength and efficiency of electromagnetic induction while maintaining portable device dimensions, thereby improving energy transfer efficiency without compromising portability.
3Loss of energy
If wireless charging uses electromagnetic induction, then energy transfer efficiency is excellent, but charging distance is limited
Solution Approach 1:
The patent employs dynamic adjustment of operating parameters based on detected distance between transmitter and receiver coils. The system automatically adjusts frequency and power levels to maintain optimal coupling conditions, allowing efficient charging across varying distances while adapting to different usage scenarios.
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 flexible and efficient wireless charging of portable devices without location or time constraints, allowing for charging from any available device, improving portability and reliability by avoiding contamination issues.
Implementation Method 1
An induction current is generated when a magnet moves through a coil. A transmission end generates a magnetic field using the induction current, and a reception end generates energy by acting as a magnet. This phenomenon is referred to as a magnetic induction phenomenon
Implementation Method 2
The resonance method is based upon the concept that when a tuning fork is rung, a nearby wine glass also vibrates with the same number of vibrations as the tuning fork. The MIT team used resonance of an electromagnetic wave containing electrical energy instead of resonance of the sound.
Implementation Method 3
The RF/microwave radiation method is a new concept of power transmission method for converting power energy to a microwave advantageous to wireless transmission to transfer the power energy.
Data Source
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AI summary
A method for wirelessly charging an electronic apparatus, the method comprising: sending, to a server, a request for information regarding wireless power-supplying devices; receiving, from the server, the information regarding wireless power-supplying devices; and charging the electronic apparatus with power supplied by at least one wireless power-supplying device according to the received information.