Separator Defect Detection in Composite Material Strip Lamination
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Solution Overview
Problem
The existing methods for inspecting laminated battery cell assemblies fail to accurately detect defects in the separators of composite material strips during the lamination process, leading to the production of defective battery cell assemblies and significant material waste.
Innovation Solution
A method, apparatus, and system utilizing computer vision technology to detect defects in the separators of composite material strips. This involves obtaining a continuous image of the strip, intercepting image segments that include the separator region, and performing detection on these regions to identify defects such as damage or wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional inspection methods are used for laminated battery cell assemblies, then the inspection process is simple, but the detection accuracy of separator defects is insufficient leading to defective products
Solution Approach 1:
The patent divides the inspection process into distinct segments: image acquisition of the composite material strip, segmentation to extract the separator region from the image, and defect detection specifically on the separator. This segmentation allows the system to focus computational resources on the critical separator component, improving detection accuracy without requiring a complete overhaul of the inspection system.
Solution Approach 2:
The patent introduces image processing algorithms as an intermediary between the physical separator and the detection system. By capturing images and processing them through segmentation and analysis algorithms, the system translates physical separator defects into detectable image features, enabling accurate defect detection while maintaining a relatively simple hardware configuration.
2Reliability
If continuous production is maintained without inspection, then productivity is high, but defective battery cell assemblies are produced causing material waste
Solution Approach 1:
The patent implements defect detection during the lamination process itself, before the battery cell assembly is completed. By detecting separator defects early in the production flow, the system enables timely intervention and prevents defective products from proceeding through subsequent manufacturing steps, thereby reducing material waste while maintaining continuous production.
Solution Approach 2:
The patent establishes a feedback loop where defect detection results are used to control the lamination process. When defects are detected in the separator, the system provides feedback to adjust or halt the lamination process, preventing further production of defective battery cell assemblies. This feedback mechanism maintains high product reliability while minimizing impact on overall productivity.
Data Source
AI summary
A method for defect detection of a separator of a composite material strip includes obtaining a continuous image of the composite material strip; intercepting at least one image segment from the continuous image of the composite material strip, where the image segment includes a separator region; and performing detection on the separator region.