Electrode Tab Meandering Detection by Sealing Film Image Measurement
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Solution Overview
Problem
The existing methods for detecting meandering faults of electrode tabs in secondary batteries are inefficient and inaccurate, leading to decreased productivity in the manufacturing process due to manual visual inspection or use of measurement equipment.
Innovation Solution
A system and method that utilizes a camera and image recognition technology to measure exposed lengths of a sealing film between electrode tabs and a pouch film at designated points, comparing the differences to detect meandering faults, and generate alarms when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual visual inspection or measurement equipment is used to detect meandering faults of electrode tabs, then detection capability is provided, but productivity decreases due to increased inspection time
Solution Approach 1:
The patent replaces manual visual inspection and mechanical measurement equipment with an automated image processing system. The system captures images of electrode tabs using a camera and automatically analyzes them through image processing algorithms to detect meandering faults, eliminating the need for manual inspection and significantly reducing inspection time while maintaining detection capability.
Solution Approach 2:
The image processing system performs self-inspection by automatically capturing images, processing them through algorithms, and identifying meandering faults without human intervention. The system autonomously completes the entire detection process, from image acquisition to fault identification, thereby improving productivity while maintaining reliable detection.
2Device complexity
If manual inspection methods are used, then detection process is simple, but measurement accuracy decreases due to human error
Solution Approach 1:
The patent replaces manual inspection with an automated image processing system that uses computer vision algorithms to measure electrode tab positions and detect meandering faults. This substitution eliminates human error in measurement while maintaining a relatively simple detection process through automated image capture and analysis.
Solution Approach 2:
The system creates a digital copy of the electrode tab area through image capture and uses this copy for automated analysis. The image processing algorithms analyze the copied visual information to detect meandering faults, providing accurate measurements without requiring direct physical contact or complex manual measurement procedures.
3Productivity
If automated image processing is implemented, then productivity improves through automation, but device complexity increases
Solution Approach 1:
The patent implements automation by replacing manual inspection processes with an image processing system that captures images and automatically analyzes them for meandering faults. This automation significantly improves inspection efficiency and productivity, though it introduces additional system components for image capture and processing.
Solution Approach 2:
The system uses digital image copying to represent the physical electrode tab area, allowing automated analysis without direct manipulation of the physical components. This approach improves productivity by enabling rapid, repeated inspections while managing device complexity through software-based analysis rather than additional mechanical components.
Data Source
AI summary
The present disclosure relates to a system, method and apparatus for detecting a meandering fault of electrode tabs of a secondary battery. The method according to an embodiment of the present disclosure includes: photographing an electrode tab area of the secondary battery through a camera; measuring exposure lengths of a sealing film located between the electrode tab and a pouch film at two designated points from an image obtained by photographing the electrode tab area; checking whether an absolute value of a difference between the measured exposure lengths is a designated reference value or more; and if the absolute value is the reference value or more, determining that the meandering fault of electrode tabs has occurred.