Wireless Charging Module With Magnetic Glue for Compact High Power
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Solution Overview
Problem
Conventional wireless power-charging modules face challenges in increasing the magnetic coupling coefficient and induced voltage, making it difficult to achieve high power charging efficiency while maintaining a compact size due to the limitations of magnetic core size and structure.
Innovation Solution
A wireless power-charging module that incorporates a magnetic core with a coil and magnetic glue, where the magnetic glue fills the gap between the magnetic core and the coil, enhancing magnetic field strength and adhering the coil to the core, thereby increasing induced voltage and charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the magnetic core dimensions are increased to improve magnetic coupling coefficient and induced voltage, then charging efficiency is improved, but the device size increases making miniaturization difficult
Solution Approach 1:
The patent introduces magnetic glue with high magnetic permeability to fill gaps between the magnetic core and coil, changing the magnetic field distribution parameters. This allows the magnetic core to be smaller while maintaining or improving magnetic coupling coefficient and induced voltage, thus achieving high charging efficiency in a compact size.
Solution Approach 2:
The patent uses composite material structure by combining traditional magnetic core material with magnetic glue material. The magnetic glue fills the gaps and interfaces between components, creating a composite magnetic circuit that improves overall magnetic coupling without requiring larger dimensions, enabling both high power efficiency and miniaturization.
2Volume of moving object
If the magnetic core dimensions are reduced for miniaturization, then device size is reduced, but magnetic coupling coefficient and induced voltage decrease reducing charging efficiency
Solution Approach 1:
By introducing magnetic glue with superior magnetic permeability properties, the patent changes the magnetic field concentration parameters in the gap regions. This compensates for the reduced magnetic path length in miniaturized cores, maintaining high magnetic coupling coefficient and induced voltage despite smaller dimensions.
Solution Approach 2:
The magnetic glue acts as an intermediary material between the magnetic core and the coil, filling the interface gaps that become more significant in miniaturized designs. This intermediary material improves magnetic flux transfer efficiency, allowing small cores to achieve coupling coefficients comparable to or better than larger conventional designs.
3Ease of manufacture
If conventional magnetic core structure is used, then manufacturing is simple, but it is difficult to increase magnetic coupling coefficient and induced voltage
Solution Approach 1:
The patent maintains manufacturing simplicity by using a conventional magnetic core structure while adding magnetic glue as a supplementary material. The magnetic glue can be applied through simple coating or injection processes, filling gaps and improving magnetic coupling without requiring complex manufacturing changes to the core itself.
Solution Approach 2:
The magnetic glue serves as an intermediary that bridges the magnetic core and coil, improving their magnetic coupling. This approach allows conventional manufacturing processes to be retained while achieving enhanced performance through the addition of the magnetic glue layer in the gap regions.
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
The use of magnetic glue improves magnetic field strength and charging efficiency, enabling higher power charging while allowing for miniaturization of the module, addressing the limitations of conventional designs.
Implementation Method 1
The magnetic glue is disposed on the surface of the magnetic core, filling the gap between the magnetic core and the coil
Implementation Method 2
When a current signal is applied to the coil 22 by an external power source, the coil 12 of the wireless power charging receiver 10 can generate an induced voltage for charging the battery B
Data Source
AI summary
A wireless power-charging module is provided, including a magnetic core, a coil, and a magnetic glue, wherein a gap is formed between the magnetic core and the coil. The coil and the magnetic glue are disposed on the surface of the magnetic core, wherein the magnetic glue fills the gap between the magnetic core and the coil.