Battery Pack Holder Adhesive Bonding for Secure Cell Fixing
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Solution Overview
Problem
Existing battery packs face challenges in maintaining a strong fixing force between battery cells and the case, which can lead to potential disassembly or damage during use.
Innovation Solution
A battery pack design that includes a holder with communication holes and adhesive application to securely fix the stack cell, holder, and case together, utilizing various hole configurations and protrusions to ensure stable bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied to fix the stack cell, holder, and case together, then the fixing force is improved, but the manufacturing complexity increases due to precise hole positioning and multiple components
Solution Approach 1:
The holder is divided into multiple functional components including the holder body, communication holes, protrusions, and ribs. This segmentation allows the adhesive to be applied at specific locations (through communication holes) rather than requiring complete surface coverage, thereby maintaining strong fixing force while simplifying the manufacturing process and reducing overall structural complexity.
Solution Approach 2:
The communication holes act as intermediaries for adhesive application. Instead of applying adhesive directly to large surfaces, the holes provide controlled pathways for adhesive injection, ensuring precise placement and optimal bonding between the stack cell, holder, and case while reducing the complexity of adhesive application equipment and processes.
2Reliability
If communication holes are formed in the holder for adhesive injection, then the fixing reliability is improved, but the holder manufacturing precision requirements increase
Solution Approach 1:
The communication holes are positioned at specific locations on the holder where adhesive application is most effective for bonding the stack cell, holder, and case. By concentrating adhesive application to these specific local areas rather than requiring uniform precision across the entire holder surface, the manufacturing precision requirements are reduced while maintaining high fixing reliability.
Solution Approach 2:
The communication holes and protrusions are pre-formed during holder manufacturing, preparing the structure for subsequent adhesive injection. This preliminary action ensures that the adhesive is delivered to optimal locations without requiring complex real-time positioning systems, thereby reducing manufacturing precision requirements while ensuring reliable fixing.
3Stability of the object's composition
If multiple protrusions and ribs are added to the holder, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
Multiple functional elements (protrusions for mechanical interlocking, ribs for structural reinforcement, and communication holes for adhesive application) are merged into a single integrated holder component. This merging approach provides enhanced structural stability through multiple features while avoiding the complexity of assembling separate components, as all features are formed as part of the holder's monolithic structure.
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
Enhances the fixing force between the battery cells and the case, preventing disassembly and damage, thereby improving the structural integrity and reliability of the battery pack.
Implementation Method 1
an adhesive for fixing the stack cell, the holder, and the case together
Data Source
AI summary
A battery pack included a stack cell including a plurality of battery cells, a holder surrounding the stack cell and including a communication hole through which at least a part of the stack cell is exposed to outside of the holder, and a case surrounding the holder. An adhesive is provided for fixing the stack cell, the holder, and the case together.