Electrode Plate Wrinkle Measurement for Uncoated Edge Grading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The level of wrinkles in the uncoated portion of an electrode plate after drying is subjectively determined, leading to inconsistencies in evaluation and a lack of formal standards, which affects the quality of secondary battery production.
Innovation Solution
An apparatus and method using a quantification algorithm to measure wrinkles in the uncoated portion of an electrode plate, incorporating an electrode plate transfer unit, wrinkle measurement unit, and processor to perform preprocessing and wrinkle level determination, including tilt correction and coated portion removal algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If subjective criteria are used to determine wrinkle levels, then evaluation flexibility is maintained, but measurement consistency and reliability deteriorate
Solution Approach 1:
The patent replaces the manual subjective evaluation system with an automated optical measurement system. A camera captures images of the electrode plate surface, and image processing algorithms automatically detect and quantify wrinkles, eliminating human subjectivity while maintaining operational simplicity through automated analysis.
Solution Approach 2:
The system enables self-service measurement where the electrode plate itself provides the measurement data through its visual characteristics. The image processing algorithm automatically extracts wrinkle information from captured images without requiring external intervention or subjective judgment, allowing the system to evaluate itself objectively.
2Measurement precision
If automated image processing is used to measure wrinkles, then measurement precision and objectivity are improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential wrinkle detection functionality from a complex image processing system. By focusing specifically on detecting surface irregularities in the uncoated portion and using simplified algorithms to identify wrinkle patterns, the system achieves high measurement precision while keeping the device structure relatively simple and manageable.
Solution Approach 2:
The system uses optical imaging to create a digital copy of the electrode plate surface. This optical replica allows for precise wrinkle measurement through image analysis without requiring direct physical contact or complex mechanical measurement devices, thereby improving precision while avoiding the complexity of mechanical measurement systems.
3Area of stationary object
If the entire electrode plate is measured including coated portions, then comprehensive coverage is achieved, but measurement accuracy for uncoated portion deteriorates due to irrelevant data
Solution Approach 1:
The patent applies local quality analysis by focusing measurement efforts specifically on the uncoated portion of the electrode plate. The image processing algorithm identifies and isolates the uncoated region, applying wrinkle detection criteria tailored to this specific area while excluding the coated portions, thereby achieving both adequate coverage of the critical region and high measurement precision without interference from irrelevant coated areas.
Data Source
AI summary
An apparatus and method are provided for objectively measuring wrinkles in an uncoated portion of an electrode plate after drying of the electrode plate based on a quantification algorithm for wrinkle measurement. The apparatus includes an electrode plate transfer unit, a wrinkle measurement unit, a memory configured to store a preset preprocessing algorithm and a preset wrinkle level determination algorithm based on pre-coating measurement data of a dried electrode plate, and at least one processor configured to execute computer-readable instructions included in the memory. The at least one processor is set to acquire wrinkle measurement data of the dried electrode plate through the wrinkle measurement unit, to perform preprocessing to remove a coated portion from the acquired wrinkle measurement data based on the preset preprocessing algorithm, and to derive the grade of the preprocessed wrinkle measurement data based on the preset wrinkle level determination algorithm.