Hinged Polyacetal Pressing Jig for Battery Cell Activation
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Solution Overview
Problem
Conventional pressing jigs for pouch-type secondary battery cells are heavy and difficult to handle, making them unsuitable for automated processes and prone to causing damage during cell activation.
Innovation Solution
A lightweight pressing jig with hinge-coupled polyacetal (POM) plates and a locking mechanism featuring a supporting rod and C-type retaining ring, allowing for easy folding and locking to restrict cell thickness expansion during activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a conventional pressing jig made of heavy metal is used, then the pressing force and structural strength are sufficient, but the weight becomes excessive making it difficult to handle and unsuitable for automated processes
Solution Approach 1:
The pressing jig uses a composite structure combining metal components (for strength and pressing force) with non-metallic components such as plastic or polymer materials (for weight reduction). This composite material approach maintains the necessary structural strength while significantly reducing the overall weight of the pressing jig, making it easier to handle and suitable for automated processes.
2Ease of operation
If a conventional heavy metal pressing jig is used, then the pressing function is reliable, but the ease of operation deteriorates due to difficulty in handling
Solution Approach 1:
By using composite materials that combine metal and non-metallic components, the pressing jig achieves a favorable weight-to-strength ratio. This reduces the overall weight for easier handling while maintaining the reliability of the pressing function through the metal components that provide necessary strength and stiffness.
3Weight of moving object
If a lightweight structure is used, then the ease of handling improves, but the ability to restrict cell thickness expansion during activation may be insufficient
Solution Approach 1:
The composite structure with metal components provides sufficient stiffness and precision for thickness control during cell activation, while the overall lightweight design maintains ease of handling. The metal portions are strategically placed in areas requiring precision and strength, while lighter materials are used in non-critical areas.
Data Source
AI summary
The present disclosure discloses a pressing jig of secondary battery cell, the pressing jig including: one pair of pressing plates hinge-coupled to be mutually foldable, and having space therebetween where the cell of the secondary battery may be disposed; and a locking mechanism configured to fixate a folded state of the one pair of pressing plates, wherein at least one of the one pair of pressing plates is made of a polyacetal (POM) material.