Pouch Battery Pressing Jig Structure to Prevent Seal Venting
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Solution Overview
Problem
Secondary batteries face issues with the sealing part of the pouch being vented due to gas pressure, 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 formed by assembling multiple pressing blocks, allowing for simultaneous pressing of the accommodation and sealing parts to prevent venting, using a combination of rigid and elastic materials to ensure stable and adjustable sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary battery is pressed to improve performance and extend lifespan, then the battery performance is improved, but the sealing part of the pouch is vented by gas pressure generated inside
Solution Approach 1:
The pressing member is divided into two distinct pressing jigs: an accommodation part pressing jig for pressing the accommodation part, and a sealing part pressing jig for pressing the sealing part. This segmentation allows independent optimization of pressing forces applied to different regions, preventing sealing part venting while maintaining battery performance improvement.
Solution Approach 2:
Different pressing forces are applied to different regions of the pouch based on their specific requirements. The sealing part pressing jig applies sufficient pressure to prevent venting, while the accommodation part pressing jig applies appropriate pressure for performance improvement. This local quality approach ensures each region receives the optimal pressing force for its function.
2Reliability
If the sealing part is pressed to prevent venting, then sealing integrity is improved, but the device complexity increases due to multiple pressing jigs
Solution Approach 1:
The accommodation part pressing jig and sealing part pressing jig are coupled together to form an integrated pressing member that operates simultaneously. This merging allows both pressing functions to be performed in a single operation, reducing overall process complexity despite the increased structural components.
Solution Approach 2:
The pressing member serves multiple functions: it presses both the accommodation part and the sealing part in a unified structure. This multi-functionality reduces the need for separate pressing operations and devices, thereby managing complexity while achieving comprehensive sealing integrity.
3Adaptability or versatility
If multiple pressing blocks are assembled to form the sealing part pressing jig, then adaptability to different battery sizes is improved, but the manufacturing complexity increases
Solution Approach 1:
The sealing part pressing jig is constructed from multiple discrete pressing blocks that can be assembled in different configurations. This segmentation allows the same basic component set to adapt to different battery sizes and sealing part geometries, improving versatility while maintaining relatively simple manufacturing of individual blocks.
Solution Approach 2:
The pressing blocks are designed to be movable and reconfigurable rather than fixed, allowing dynamic adjustment of the pressing jig configuration to match different battery sizes. This dynamic adaptability enables a single pressing member design to serve multiple battery formats without requiring completely different structures for each size.
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
Each of the third pressing blocks may be made of a material having elastic restoring force
Data Source
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AI summary
The present invention relates to an apparatus for pressing a secondary battery. The 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.