Wireless Charging Mat With Zoned Texture for Device Stability
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Solution Overview
Problem
Wireless charging mats face issues with electronic devices slipping off due to smooth surfaces, and existing solutions like silicone coatings are aesthetically and haptically unpleasing, while traditional friction measurement methods fail to account for slow slip rates over time.
Innovation Solution
A wireless charging mat with a dynamically changing surface texture featuring a rough inner region and a grippy, elevated smooth outer region, along with techniques such as selective laser texturing and additive coating processes, to ensure electronic devices remain securely charged without attracting lint or dust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a smooth surface is used on the charging mat, then the esthetic and haptic qualities are improved, but electronic devices slip off the surface
Solution Approach 1:
The charging mat surface is divided into different regions with different textures: a first region with a first texture and a second region with a second texture. This local differentiation allows the mat to provide both smooth haptic qualities in one area and high friction grip in another, resolving the contradiction between esthetic quality and device stability.
2Reliability
If an uncoated silicone surface is used to prevent phone slippage, then device stability is improved, but lint and dust build up on the surface
Solution Approach 1:
By creating distinct textured regions on the charging mat surface, the invention localizes the high-friction texture only where needed for device stability, while other regions maintain smooth surfaces that do not attract lint and dust, thus resolving the contradiction between preventing slippage and minimizing debris accumulation.
3Reliability
If a silicone coating is applied to the charging mat surface, then device stability is improved, but esthetic and haptic qualities deteriorate
Solution Approach 1:
The charging mat employs different surface textures in different regions, allowing the silicone coating or textured surface to be applied only in specific areas where device stability is needed, while other regions maintain their natural smooth and aesthetically pleasing surfaces, thus resolving the contradiction between stability and haptic quality.
4Reliability
If the entire surface has high friction texture, then device stability is improved, but the surface attracts more lint and dust
Solution Approach 1:
The charging mat surface is divided into different regions with different textures: a first region with a first texture and a second region with a second texture. This local differentiation allows the mat to provide both smooth haptics and high friction grip only where needed, resolving the contradiction between preventing slippage and minimizing debris accumulation.
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
Prevents slipping of electronic devices by ensuring contact with the grippy outer region while maintaining a flat, aesthetically pleasing surface that minimizes dust accumulation and provides improved haptic quality.
Implementation Method 1
A transmitter coil disposed below the charging surface may produce a time-varying magnetic field that induces a current in a corresponding receiving coil in the electronic device
Implementation Method 2
A charging mat with an uncoated silicone surface can prevent phone slippage
Data Source
AI summary
A wireless charging mat has a surface area for receiving an electronic device to be charged. The surface area of the charging mat includes an inner region having a rough surface texture and an outer region having s smooth surface texture, and the outer region is elevated relative to the inner region.