Pouch Battery Secondary Sealing with Electrode Gap Alignment
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Solution Overview
Problem
Managing the gap between the secondary sealing line and the electrode assembly in pouch-type secondary batteries is challenging, affecting the electrical characteristics and consistency of battery products.
Innovation Solution
A secondary sealing device that includes a transport part, a sealing part forming a secondary sealing line with a predetermined gap, and a gap correction part to align the pouch-type secondary battery before forming the secondary sealing line, ensuring a consistent gap between the electrode assembly and the secondary sealing line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the secondary sealing line is formed without position alignment, then the sealing process is simple and fast, but the gap between the secondary sealing line and electrode assembly varies, affecting electrical characteristics
Solution Approach 1:
The patent applies preliminary action by performing position alignment of the pouch-type secondary battery before the secondary sealing process. The gap correction part aligns the battery position in advance, ensuring that the secondary sealing line is formed at the correct position relative to the electrode assembly, thereby achieving consistent gap values without requiring complex real-time adjustment mechanisms during sealing.
Solution Approach 2:
The patent replaces complex mechanical alignment mechanisms with a vision system. The image providing part captures images of the pouch-type secondary battery, and the image analyzing part processes these images to determine position information. This substitution of mechanical systems with optical and computational systems achieves precise alignment while maintaining relatively simple device structure.
2Reliability
If the gap between secondary sealing line and electrode assembly is not controlled, then the manufacturing process is efficient, but electrical characteristics of battery products show variations
Solution Approach 1:
The patent implements feedback control by using the image providing part and image analyzing part to detect the actual position of the pouch-type secondary battery, comparing it with the target position, and using this information to control the sealing part's positioning. This closed-loop feedback system ensures that the secondary sealing line is formed at the correct position, guaranteeing consistent gap values and reliable electrical characteristics while maintaining manufacturing efficiency through automated control.
Data Source
AI summary
The present application relates to a secondary sealing device for a pouch-type secondary battery. The secondary sealing device for a pouch-type secondary battery pursuant to the present invention can align the position of the electrode assembly to perform correction for a gap between the electrode assembly and the secondary sealing line allowing for convenient and precise gap management and ensuring consistent product specifications in terms of electrical characteristics.