Magnetic Field Shielding Sheet with Heat Radiation Fillers
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Solution Overview
Problem
Existing wireless power charging systems face challenges in minimizing the impact of magnetic fields generated during wireless power transmission on electronic components and human bodies, as these fields can interfere with charging efficiency and safety.
Innovation Solution
A magnetic field shielding sheet is introduced, comprising magnetic field shielding layers and heat radiation fillers within an adhesive layer, which are strategically distributed to absorb and dissipate magnetic fields, while also enhancing heat radiation efficiency. The sheet is designed to be used in both wireless power transmitting and receiving apparatuses to minimize magnetic field effects on electronic components and human bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If magnetic field shielding layers are added to shield the magnetic field generated by the coil part, then magnetic field interference is reduced, but heat accumulation increases due to the shielding effect
Solution Approach 1:
The patent introduces a heat radiation layer as an intermediary component between the coil part and the magnetic field shielding layer. This heat radiation layer, containing heat radiation fillers, serves as a mediator that extracts heat from the coil part before it reaches the shielding layer, preventing heat accumulation while maintaining the magnetic field shielding function of the upper layer.
Solution Approach 2:
The patent creates a composite structure combining magnetic field shielding layers with a heat radiation layer containing heat radiation fillers. This composite material system integrates two distinct functions: magnetic field shielding (performed by the shielding layers) and heat radiation (performed by the heat radiation layer with fillers), allowing both functions to coexist without interfering with each other.
2Adaptability or versatility
If a magnetic field shielding sheet is designed to address both magnetic field shielding and heat radiation, then the structure becomes more complex, but single-layer solutions cannot simultaneously achieve both functions
Solution Approach 1:
The patent merges the magnetic field shielding function and the heat radiation function into a single integrated sheet structure. The magnetic field shielding layers and heat radiation layer are combined in one sheet, allowing the shielding sheet to simultaneously perform both functions. This merging eliminates the need for separate shielding and heat management components, reducing overall system complexity despite the multi-layer internal structure.
Solution Approach 2:
The magnetic field shielding sheet is designed as a universal component that performs multiple functions: magnetic field shielding and heat radiation. By incorporating both functional layers into one sheet, the patent creates a multi-functional component that can be applied in various wireless charging scenarios, enhancing adaptability while maintaining a unified structural form.
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 solution effectively reduces the magnetic field interference, maintaining wireless power charging efficiency and ensuring safety by simultaneously providing magnetic field shielding and heat radiation functions, thus enhancing the overall performance and safety of wireless power charging systems.
Implementation Method 1
magnetic field shielding layers disposed on a surface of a coil part configured to provide a wireless power charging function to shield a magnetic field generated from the coil part
Implementation Method 2
heat radiation fillers disposed within the adhesive layer
Implementation Method 3
heat radiation fillers disposed within the adhesive layer
Data Source
AI summary
A magnetic field shielding sheet and a wireless power charging apparatus including the same are provided. A magnetic field shielding sheet includes a magnetic field shielding area including magnetic field shielding layers disposed on a surface of a coil part configured to provide a wireless power charging function to shield a magnetic field generated from the coil part and an adhesive layer bonding the magnetic field shielding layers to each other, and heat radiation fillers disposed within the adhesive layer.