Pouch Battery Pressing Jig for Sealing Venting Prevention
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Solution Overview
Problem
Secondary batteries face the issue of the sealing part of the pouch being vented due to gas pressure generated inside, which affects their performance and lifespan.
Innovation Solution
An apparatus and method that includes a pressing member with an accommodation part pressing jig and a sealing part pressing jig, where the sealing part pressing jig is coupled to the accommodation part pressing jig to apply pressure to the sealing part, using a combination of rigid and elastic blocks to prevent venting and ensure uniform pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform pressure is applied to press the secondary battery, then performance and lifespan are improved, but the sealing part of the pouch may be vented by internal gas pressure
Solution Approach 1:
The pressing member is divided into two distinct jigs: an accommodation part pressing jig for pressing the battery body and a sealing part pressing jig for pressing the sealing portion. This segmentation allows independent optimization of pressing forces applied to different parts of the battery, preventing sealing venting while maintaining battery performance.
Solution Approach 2:
Different pressing forces are applied to different regions of the battery. The sealing part pressing jig applies localized pressure specifically to the sealing portion, while the accommodation part pressing jig applies pressure to the battery body. This local quality approach ensures that the sealing area receives sufficient pressure to prevent venting without compromising overall battery performance.
2Reliability
If the sealing part is pressed to prevent venting, then sealing integrity is improved, but the complexity of the pressing apparatus increases
Solution Approach 1:
The sealing part pressing jig is coupled to the accommodation part pressing jig, merging two pressing functions into a single integrated apparatus. This combination allows both the battery body and sealing portion to be pressed simultaneously or sequentially without requiring separate equipment, thus improving sealing integrity while minimizing the increase in apparatus complexity.
Solution Approach 2:
The pressing apparatus is designed with multi-functional capability, where the integrated pressing member can perform both accommodation part pressing and sealing part pressing operations. This universality reduces the need for multiple separate devices, maintaining operational simplicity while achieving improved sealing integrity.
3Manufacturing precision
If separate pressing operations are used for accommodation part and sealing part, then pressing precision is improved, but processing time increases
Solution Approach 1:
The sealing part pressing jig is positioned and configured in advance on the accommodation part pressing jig, allowing both pressing operations to be performed simultaneously or in optimized sequence without requiring repositioning or setup changes between operations. This preliminary arrangement maintains high pressing precision while reducing total processing time.
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 effectively prevents the sealing part from being vented by gas pressure, improving the performance and extending the lifespan of secondary batteries while allowing for easy maintenance and compatibility with various battery sizes.
Implementation Method 1
An elastic member configured to elastically press the pouch accommodation part may be disposed on a pressing surface of the accommodation part pressing jig
Implementation Method 2
a sealing part pressing jig configured to press a sealing part formed along an edge surface of the accommodation part in the pouch of the secondary battery disposed on the disposing member, wherein the sealing part pressing jig is coupled to a surface of the accommodation part pressing jig corresponding to the sealing part to press the sealing part through pressing force transmitted from the accommodation part pressing jig
Data Source
AI summary
An apparatus for pressing a secondary battery comprises a disposing member on which the secondary battery comprising an electrode assembly and a pouch is disposed, and a pressing member configured to press the secondary battery disposed on the disposing member, wherein the pressing member comprises an accommodation part pressing jig configured to press an accommodation part of the pouch, in which the electrode assembly is accommodated, in the pouch of the secondary battery disposed on the disposing member, and a sealing part pressing jig configured to press a sealing part formed along an edge surface of the accommodation part in the pouch of the secondary battery disposed on the disposing member, wherein the sealing part pressing jig is coupled to a surface of the accommodation part pressing jig corresponding to the sealing part to press the sealing part through pressing force transmitted from the accommodation part pressing jig.