Electrode Roll Map Generation for Battery Sheet Quality Tracking
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Solution Overview
Problem
Existing secondary battery manufacturing systems lack a comprehensive system for generating a roll map that includes information about the quality and defects in the electrode manufacturing process.
Innovation Solution
A secondary battery manufacturing system that includes a first controller to collect coordinate data based on an encoder's winding amount signal, a measuring device to collect and calibrate measurement data, and a server to generate a roll map based on compressed measurement data, enabling feedback, feed forward, and tracking of the electrode process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement data is collected and stored in detail for quality control, then measurement precision is improved, but data storage requirements and system complexity increase
Solution Approach 1:
The patent extracts and stores only the essential quality parameters and measurement data needed for roll map generation, separating critical quality information from redundant data. This allows high measurement precision to be achieved while minimizing data storage requirements and system complexity by storing only the extracted essential parameters.
Solution Approach 2:
Instead of storing all raw measurement data and processing it later, the system inverts the approach by generating the roll map through coordinate-related measurement data that directly represents quality information. This inversion reduces the need for complex storage and processing of large volumes of raw data while maintaining measurement precision.
2Loss of information
If comprehensive measurement data is collected for the entire electrode sheet, then measurement completeness is improved, but data transmission time and processing load increase
Solution Approach 1:
The system extracts coordinate-related measurement data that is essential for representing electrode sheet quality in the roll map, transmitting only this extracted information rather than complete raw measurement data. This maintains measurement information completeness for quality assessment while significantly reducing data transmission time and processing load.
Solution Approach 2:
The patent applies local quality by focusing measurement and transmission efforts on specific coordinate-related parameters that are most relevant to quality assessment at different positions on the electrode sheet. This ensures comprehensive quality information is captured where needed while avoiding transmission of unnecessary data from all areas.
3Measurement precision
If detailed coordinate data is collected for each position on the electrode sheet, then positioning precision is improved, but data volume and processing complexity increase
Solution Approach 1:
The system extracts coordinate-related measurement data that links positional information with quality parameters, storing only the essential coordinate-quality relationships needed for roll map generation. This maintains positioning precision for quality tracking while minimizing data volume by eliminating redundant coordinate information.
Data Source
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AI summary
Provided is a secondary battery manufacturing system according to example embodiments of the present technology. The system includes a first controller configured to collect coordinate data, and a measuring device configured to collect measurement data of an electrode sheet, in which the measuring device is configured to relate the coordinate data with the measurement data to generate coordinate-related inspection data.