Electrode Rolling Inspection for Surface Roughness Control
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Solution Overview
Problem
The manufacturing process for secondary battery electrodes often results in abnormal electrodes due to deteriorating surface roughness of the rolling roller, which affects the electrode's surface quality and performance, leading to inconsistent product quality.
Innovation Solution
A system and method that includes a rolling roller measuring unit, an electrode measuring unit, and a pressure measuring unit to inspect the surface roughness and rolling load of the rolling roller and the finished electrode, allowing for real-time quality assessment and determining the need for roller replacement, thereby preventing abnormal electrode production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rolling process is repeated using the same rolling roller, then productivity is maintained, but the surface roughness of the rolling roller increases causing electrode quality deterioration
Solution Approach 1:
The system performs preliminary inspection of the rolling roller's surface roughness and linear pressure before the roller is used to produce defective electrodes. By measuring these parameters in advance and comparing them against predetermined standards, the system identifies when the rolling roller needs replacement, preventing the production of abnormal electrodes while maintaining continuous production flow.
Solution Approach 2:
The inspection device provides feedback information about the rolling roller's surface roughness and linear pressure to the control system. This feedback mechanism enables real-time monitoring and decision-making regarding roller replacement, allowing the system to maintain electrode quality standards while optimizing production efficiency by replacing rollers at the optimal time.
2Manufacturing precision
If the rolling roller is replaced frequently to maintain electrode quality, then manufacturing precision is improved, but productivity decreases due to replacement operations
Solution Approach 1:
The system performs preliminary inspection of the rolling roller's surface roughness and linear pressure before the roller is used to produce defective electrodes. By measuring these parameters in advance and comparing them against predetermined standards, the system identifies when the rolling roller needs replacement, preventing the production of abnormal electrodes while maintaining continuous production flow.
Solution Approach 2:
The system monitors changes in the rolling roller's physical parameters (surface roughness and linear pressure) over time. By tracking these parameter changes and comparing them against predetermined thresholds, the system determines the optimal replacement timing, replacing the roller just when it reaches the critical threshold rather than replacing it frequently or on a fixed schedule.
3Measurement precision
If inspection frequency is increased to detect roller deterioration early, then measurement precision is improved, but productivity decreases due to more frequent inspections
Solution Approach 1:
The system monitors changes in the rolling roller's physical parameters (surface roughness and linear pressure) over time. By tracking these parameter changes and comparing them against predetermined thresholds, the system determines the optimal replacement timing, replacing the roller just when it reaches the critical threshold rather than replacing it frequently or on a fixed schedule.
Data Source
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AI summary
The present invention relates to a system for manufacturing an electrode for a secondary battery. The system for manufacturing the electrode for the secondary battery comprises a supply roller supplying a collector having a long sheet shape; an electrode active material coating device applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.