Hyperspectral Electrode Surface Analysis for Foreign Substance Detection
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Solution Overview
Problem
Existing inline equipment for manufacturing secondary battery electrodes lacks precision in identifying the types and residual amounts of foreign substances, such as binders, on the electrode surface, due to large field of view limitations.
Innovation Solution
Employing a hyperspectral CCD as offline equipment to analyze the electrode surface, involving photographing, visualizing, and quantifying the surface using a hyperspectral CCD to distinguish and measure foreign substances accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a vision camera with large field of view is used for inline inspection, then the coverage area is improved, but the measurement precision for identifying foreign substance types and amounts deteriorates
Solution Approach 1:
The patent segments the inspection system into two parts: an online vision system for large-area coverage and an offline hyperspectral imaging system for precise analysis. The online system performs initial screening with broad coverage, while the offline system provides detailed spectral analysis for foreign substance identification, thus resolving the contradiction between coverage area and measurement precision.
Solution Approach 2:
The patent introduces hyperspectral imaging technology as an intermediary tool that bridges the gap between online inspection and offline analysis. The hyperspectral camera captures spectral information across multiple wavelengths, enabling precise identification of foreign substances without requiring direct contact with the electrode surface, thus maintaining both coverage and precision.
2Measurement precision
If a high-precision camera is installed for accurate foreign substance analysis, then the measurement precision is improved, but the device complexity and installation difficulty increase
Solution Approach 1:
The patent uses hyperspectral imaging to create a spectral copy of the electrode surface, which contains detailed information about foreign substances. This spectral copy can be analyzed offline without requiring complex real-time processing equipment during production, thus reducing device complexity while maintaining high measurement precision.
3Measurement precision
If offline hyperspectral imaging is used for precise analysis, then the measurement precision is improved, but the productivity decreases due to additional inspection time
Solution Approach 1:
The patent implements preliminary action by using the online vision system to identify and flag potential foreign substances during production. This preliminary screening allows the offline hyperspectral analysis to focus only on suspicious areas, significantly reducing the total inspection time and minimizing impact on productivity while maintaining high detection precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Precisely analyzes the types and amounts of foreign substances on the electrode surface, enhancing process efficiency and product reliability by improving the etching process and equipment performance.
Implementation Method 1
photographing an electrode surface with a hyperspectral CCD to obtain a spectrum of the electrode surface
Data Source
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AI summary
The present disclosure relates to a method and system for analyzing an electrode surface, and more specifically, to a method and system for analyzing an electrode surface that can precisely analyze foreign substances remaining on the electrode surface during an electrode manufacturing process using a hyperspectral CCD to increase process efficiency and product reliability.