Electrode Plate Roller Adjustment Using Thickness Dispersion Feedback
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Solution Overview
Problem
Existing electrode plate manufacturing processes face challenges in achieving uniform sheet thickness, which can affect the electrochemical performance and safety of secondary batteries.
Innovation Solution
A method and apparatus that use a processor to obtain thickness measurements of a sheet rolled through multiple rollers, calculate the dispersion of sheet thickness, determine movement information for target rollers, and control their movement to adjust the sheet thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fixed roller configuration is used, then device simplicity is maintained, but sheet thickness uniformity deteriorates
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed roller configuration into a dynamic system where rollers can be automatically adjusted based on real-time thickness measurements. The control system dynamically modifies roller positions to compensate for thickness variations, achieving uniform sheet thickness while maintaining operational simplicity through automated feedback control.
Solution Approach 2:
The patent implements feedback control by continuously measuring sheet thickness during the rolling process and using this information to automatically adjust roller positions. The thickness measurement data feeds back to the control system, which then modifies the roller configuration to correct any deviations from the target thickness, resolving the contradiction between precision and complexity.
2Manufacturing precision
If real-time thickness measurement and roller adjustment is implemented, then sheet thickness uniformity is improved, but manufacturing process complexity increases
Solution Approach 1:
The patent uses feedback control by implementing real-time thickness measurement and automatically adjusting roller positions based on the measured data. The control system receives thickness information, processes it to determine the appropriate adjustment, and executes the roller position modification, creating a closed-loop system that improves thickness control without requiring complex manual intervention.
Solution Approach 2:
The system applies self-service by enabling the rolling process to automatically correct its own thickness variations. The measurement and control system operates autonomously, with the process itself generating the correction signals needed to maintain uniform thickness, reducing the need for external monitoring and manual adjustment while improving precision.
3Manufacturing precision
If multiple rollers are adjusted simultaneously, then thickness uniformity improves faster, but control complexity and potential for error increases
Solution Approach 1:
The patent applies local quality by selectively adjusting only the specific rollers that have the most significant impact on the measured thickness variations, rather than uniformly adjusting all rollers. The control system identifies and modifies the critical rollers based on the thickness measurement data and roller influence analysis, achieving effective thickness control while simplifying the adjustment process.
Solution Approach 2:
The patent implements segmentation by dividing the roller adjustment process into discrete, manageable steps. The control system determines which specific rollers need adjustment and by how much, then executes these adjustments in a structured sequence. This segmented approach breaks down the complex multi-roller adjustment into simpler, more controllable individual actions.
Data Source
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AI summary
A method for controlling a sheet thickness in an electrode plate manufacturing process, which is performed by at least one processor, includes obtaining a thickness measured for each of a plurality of portions of a sheet rolled through a plurality of rollers, calculating, based on the obtained thickness for each of the plurality of portions, a dispersion for the sheet thickness, determining, based on the calculated dispersion, movement information of at least one target roller from the plurality of rollers, and controlling the at least one target roller to be moved based on the determined movement information.