Composite Battery Cover Damping for Electronic Device Vibration
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Solution Overview
Problem
The battery cover of electronic devices vibrates due to air circulation when the rear cavity is opened, affecting user experience and reducing its lifespan, and existing solutions either require additional space or compromise battery expansion, making maintenance difficult.
Innovation Solution
A multi-layer composite battery cover structure with damping layers that convert air-induced vibrations into heat energy through a shearing effect, eliminating the need for additional space and ensuring material utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foam material is placed on the battery cover surface to suppress vibration, then vibration damping effect is improved, but the thickness requirement becomes very high due to limited space between battery and battery cover
Solution Approach 1:
The battery cover uses a composite material structure combining aluminum alloy base layer with damping material coating layer. This composite structure achieves effective vibration damping with much thinner material thickness compared to traditional foam materials, resolving the contradiction between damping effectiveness and space constraints.
Solution Approach 2:
The patent changes the physical and chemical parameters of the damping material by applying it as a coating layer rather than using bulk foam material. This parameter change in material application form enables effective damping with reduced thickness, solving the space limitation problem.
2Reliability
If the battery cover is directly connected to the battery to suppress vibration, then vibration damping effect is improved, but the battery expansion space disappears and maintenance becomes difficult
Solution Approach 1:
The damping material coating on the battery cover acts as an intermediary vibration suppression mechanism, eliminating the need for direct mechanical connection between battery cover and battery. This allows the battery to maintain its expansion capability while still achieving effective vibration damping through the damping coating layer.
3Reliability
If damping material is placed between battery and battery cover, then vibration damping effect is improved, but the available space is occupied and battery expansion is restricted
Solution Approach 1:
The patent changes the application form of damping material from bulk placement to thin coating layer deposition. This parameter change in material form enables effective damping while occupying minimal space, preserving battery expansion capability without requiring additional volume between battery and battery cover.
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
Effectively suppresses vibrations by self-energy absorption, enhancing user experience without occupying extra space and maintaining battery expansion, while ensuring damping material performance.
Implementation Method 1
Vibration is suppressed by means of a shearing effect of the damping material in a multi-layer structure
Implementation Method 2
the battery cover is of a multi-layer composite structure, the multi-layer composite structure includes a damping layer
Implementation Method 3
Vibration is suppressed by means of a shearing effect of the damping material in a multi-layer structure, and there is no need to occupy additional internal space
Data Source
AI summary
This application provides an electronic device and a battery cover. The electronic device includes a middle frame, a screen, and a battery cover. The middle frame includes a middle plate and surrounding side plates on four sides. The middle plate is disposed between the side plates, and partitions the side plates into a first portion and a second portion. The middle plate includes a first plate surface and a second plate surface. The first plate surface and the first portion enclose a first accommodating cavity, and the second plate surface and the second portion enclose a second accommodating cavity. The screen covers the first accommodating cavity. The second accommodating cavity includes a sound production assembly, a battery and a camera assembly therein. The sound production assembly, the battery. The battery cover covers the second accommodating cavity and includes at least one damping layer.