Laminated Electrode Positioning With Pre-Lamination Optical Inspection
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Solution Overview
Problem
Conventional methods struggle to achieve high accuracy in the lamination of positive and negative electrode sheets with a separator sheet in laminated electrode bodies, leading to positioning inaccuracies.
Innovation Solution
A manufacturing apparatus and method that utilize a laminating table, transporting means with an adsorbing portion, and a control system to accurately position and inspect the relative placement of electrode and separator sheets before lamination, ensuring a normal positional relationship is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection is used to detect foreign matter on electrode plates, then the inspection process is simple, but inspection accuracy is low and foreign matter is frequently overlooked
Solution Approach 1:
The patent replaces the mechanical visual inspection method with an optical inspection system that uses a camera to capture images of the electrode plate surface. The captured images are then processed by a foreign matter determination unit that analyzes the images to detect foreign matter, thereby substituting human visual inspection with an automated optical system to improve detection accuracy.
2Productivity
If multiple processes are performed manually before lamination, then flexibility is maintained, but production time increases and productivity decreases
Solution Approach 1:
The patent performs foreign matter inspection on the electrode plates before they are stacked and before the lamination process begins. By conducting this inspection in advance, the system identifies and allows for the removal of foreign matter prior to stacking, preventing contamination of the entire battery assembly and enabling more efficient production flow.
Solution Approach 2:
The inspection system automatically captures images of the electrode plates and the foreign matter determination unit autonomously analyzes these images to detect foreign matter. This self-service capability eliminates the need for manual visual inspection by workers, thereby improving productivity while maintaining ease of manufacture through automated operation.
3Reliability
If foreign matter is not detected before lamination, then the manufacturing process is efficient, but battery quality deteriorates due to internal contamination
Solution Approach 1:
The inspection system provides feedback by capturing images of the electrode plates and analyzing them to detect foreign matter. The foreign matter determination unit processes the captured images and provides information about detected foreign matter, enabling operators to take corrective actions before lamination. This feedback mechanism ensures battery quality by preventing foreign matter contamination while maintaining efficient production through automated detection.
Data Source
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AI summary
A manufacturing technique of a laminated electrode body which enables a highly accurate laminated electrode body to be manufactured is provided. In a preferable aspect of the manufacturing apparatus of a laminated electrode body disclosed herein comprises a laminating table, transporting means, an inspecting portion, and a control portion. The control portion is configured to execute process disclosed herein.