Secondary Battery Frame Unit Noise Reduction via Adhesive Buffer
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Solution Overview
Problem
Secondary batteries generate noise due to the repeated detachment and attachment of the label unit to the frame unit, especially under torsional stress, which can be inconvenient for users.
Innovation Solution
A secondary battery design that includes a frame unit, an adhesive portion with a polyimide-based substrate and silicone-based adhesive layer, and a label unit, where the adhesive portion overlaps the battery cell and frame unit, and the label unit is attached to the adhesive portion rather than directly to the frame unit, reducing noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the label unit is directly attached to the frame unit, then the structure is simple, but noise is generated due to repeated detachment and attachment under torsional stress
Solution Approach 1:
The adhesive portion is introduced as an intermediary element between the label unit and the frame unit. This adhesive portion includes a substrate layer and an adhesive layer that attaches to both the battery cell and the frame unit, creating a buffer zone that reduces the direct mechanical connection between the label unit and the frame unit, thereby minimizing noise during repeated attachment and detachment cycles
2Reliability
If the adhesive portion overlaps both the battery cell and frame unit, then coherence and stability are enhanced, but the device complexity increases
Solution Approach 1:
The adhesive portion merges multiple functions into a single component: it provides structural support, enhances coherence between the battery cell and frame unit, and serves as an attachment surface for the label unit. By combining these functions in one element, the overall structural complexity is minimized while achieving the desired reliability
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 design minimizes noise during use by enhancing coherence between the battery cell and frame unit, reducing the likelihood of noise from the label unit's attachment and detachment, and allows for a more efficient external appearance and manufacturing process.
Implementation Method 1
an adhesive layer between the substrate layer and the battery cell, or the battery cell and the frame unit
Data Source
AI summary
Provided is a secondary battery, including a battery cell; a frame unit surrounding the battery cell; an adhesive portion overlapping the battery cell and the frame unit and attached to the battery cell; and a label unit covering at least portions of the battery cell and the frame unit, at least a portion of the label unit overlapping the adhesive portion.