Stretch Release Adhesive for Battery Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in portable computing devices, such as smartphones, is the difficulty in reducing height due to the need to secure batteries effectively without compromising stability, and existing adhesive techniques make battery replacement or servicing challenging.
Innovation Solution
A stretch release adhesive with a double-sided adhesive body and a graspable portion is used to securely attach and easily remove components like batteries from the device housing, distributing force across multiple leg portions to prevent damage during removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relatively thick adhesive layer is applied to secure the battery, then the battery stability is improved, but the device height reduction potential is limited and battery removal becomes difficult
Solution Approach 1:
The adhesive layer is segmented into multiple discrete leg portions that can independently deform during removal. This segmentation allows the adhesive to maintain strong bonding when installed (distributed across multiple legs) while enabling controlled removal through sequential leg deformation, resolving the contradiction between secure attachment and easy removal.
Solution Approach 2:
The adhesive structure transitions from a static, rigid bonding state during installation to a dynamic, deformable state during removal. The leg portions are designed to bend and deform under pulling force, transforming the adhesive from a stable securing mechanism into a controllable release mechanism, thereby enabling both strong attachment and easy removal.
2Reliability
If a relatively thick adhesive layer is applied to secure the battery, then the battery stability is improved, but the ease of battery removal deteriorates
Solution Approach 1:
The adhesive is divided into multiple leg portions that can be individually deformed during removal. This segmentation provides multiple failure points that can be sequentially activated, allowing the battery to be removed in a controlled manner rather than requiring simultaneous failure of a thick adhesive layer, thus improving removal ease while maintaining stability.
Solution Approach 2:
The adhesive structure changes its mechanical parameters during removal - the leg portions transition from a rigid, high-strength bonding state to a flexible, low-strength deformable state when force is applied. This parameter change allows the same adhesive to provide strong stability during installation but easy removal when needed.
3Length of moving object
If the adhesive layer is thinned to reduce device height, then the device height reduction potential is improved, but the battery stability deteriorates
Solution Approach 1:
By segmenting the adhesive into multiple legs, the effective bonding area is increased for a given overall adhesive thickness. Each leg provides independent bonding, allowing the use of thinner adhesive material while achieving the same or greater overall stability through the cumulative effect of multiple bonding points.
Solution Approach 2:
The adhesive structure extends into the vertical dimension with multiple leg portions at different heights and positions. This three-dimensional configuration allows thin adhesive layers to provide substantial bonding strength through spatial distribution, compensating for reduced thickness with increased spatial coverage and multiple bonding planes.
4Reliability
If a thick adhesive layer is used, then the battery stability is improved, but the device complexity increases
Solution Approach 1:
The segmented leg structure provides a simple geometric pattern that is easy to manufacture and apply. Rather than requiring complex multi-layer adhesive systems or mechanical fasteners, the segmented design achieves enhanced stability through a straightforward geometric configuration that can be easily integrated into the battery assembly process.
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
This solution allows for secure battery retention while enabling easy removal without damaging the battery or housing, facilitating efficient servicing and replacement while maintaining device stability.
Implementation Method 1
a pulling force applied to the graspable portion can cause the stretch release adhesive to bend in a manner that releases the component from the interior surface
Data Source
AI summary
A stretch release adhesive is disclosed. The stretch release adhesive can be used for extracting an electrical component from an interior surface of a housing of a mobile computing device. The stretch release adhesive can have a double-sided adhesive body configured to adhere the component to the interior surface of the housing. A portion of the double-sided adhesive body is configured to extend out from between the electrical component and the interior surface of the housing to provide a graspable portion. When the stretch release adhesive is adhered between the electrical component and the internal surface of the housing, the stretch release adhesive can receive a pulling force at the graspable portion. If pulled with enough force, the stretch release adhesive will extend outwardly from between the electrical component and the internal surface of the mobile computing device, then completely release the electrical component from the mobile computing device.