Electrode Plate Tab Position Correction for Precise Film Cutting
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Solution Overview
Problem
Existing electrode plate manufacturing processes face challenges in accurately forming tabs and cutting widths, leading to errors in the production of lithium secondary batteries, which affect the performance and efficiency of these batteries.
Innovation Solution
An electrode plate manufacturing device and method that includes a notching part to form tabs, a cutting part to cut the film, and a processor to correct the position of the notching part based on tab positions and cut widths, using sensors to sense these parameters and adjust the notching part's position to minimize errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the notching part forms tabs on the film without position correction, then the manufacturing process is simple, but the manufacturing precision of tab position and cut width deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where sensors detect the actual positions of tabs and cut widths, the processor compares these measurements with target values to calculate position deviations, and the notching part's position is corrected based on these deviations. This closed-loop feedback system continuously monitors and adjusts the manufacturing process to maintain high precision.
Solution Approach 2:
The patent replaces purely mechanical positioning methods with a hybrid system that incorporates optical sensors and computational processing. Instead of relying solely on mechanical precision, the system uses optical detection and algorithmic calculation to achieve and maintain positioning accuracy, substituting mechanical complexity with sensor-based measurement and control.
2Reliability
If the notching part position is not corrected, then the manufacturing process is fast, but the number of defective electrode plates increases
Solution Approach 1:
The patent performs preliminary detection of tab positions and cut widths immediately after formation, calculating the required position correction before the next manufacturing step. This advance measurement and calculation prevent defects from propagating to subsequent electrodes, ensuring high reliability without requiring complete rework of the production line.
Solution Approach 2:
The system implements self-service by automatically detecting positioning deviations and correcting the notching part's position without manual intervention. The sensor-processor-actuator loop operates autonomously to maintain product quality, reducing the need for external quality control processes and minimizing production delays.
3Manufacturing precision
If sensors continuously monitor tab position and cut width, then manufacturing precision is maintained, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring where sensors measure tab positions and cut widths at specific intervals (e.g., every few electrodes) rather than continuously for every single electrode. This periodic measurement approach maintains manufacturing precision by detecting trends and deviations over time while significantly reducing the energy consumption associated with continuous sensing and processing.
Data Source
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AI summary
An electrode plate manufacturing device includes a notching part configured to form one or more tabs on at least a portion of a film, a cutting part configured to cut the film to have a cut width, a feeding part configured to transfer the film from the notching part to the cutting part, and a processor configured to correct a position of the notching part based on at least one of a position of the tabs formed on the film and the cut width of the film.