Electrode Plate Rolling Control for Uniform Sheet Thickness
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Solution Overview
Problem
The electrode plate manufacturing process faces challenges in achieving uniform sheet thickness, which can affect the electrochemical performance and safety of secondary batteries.
Innovation Solution
A method and apparatus that utilize a processor to measure the thickness 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 spacing between rollers, thereby achieving uniform sheet thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If roller spacing is fixed during sheet rolling, then the manufacturing process is simple and stable, but the sheet thickness uniformity deteriorates
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed roller spacing system into a dynamic adjustable system. The roller spacing is no longer static but can be modified in real-time based on measured thickness values. The control unit receives thickness measurements from measurement units and automatically adjusts the roller spacing to compensate for thickness variations, thereby achieving uniform sheet thickness while maintaining relatively simple implementation through automated feedback control.
Solution Approach 2:
The patent implements feedback control by continuously measuring the thickness of the sheet during the rolling process and using this information to adjust the roller spacing. The measurement units monitor thickness variations, and the control unit processes these measurements to determine appropriate spacing adjustments. This closed-loop feedback mechanism enables automatic compensation for thickness non-uniformity without requiring complex manual intervention or over-engineered systems.
2Manufacturing precision
If roller spacing is adjusted frequently to achieve uniform thickness, then sheet thickness uniformity improves, but the manufacturing time and productivity deteriorate
Solution Approach 1:
The patent applies continuity of useful action by implementing continuous thickness measurement and continuous roller spacing adjustment during the sheet rolling process. Rather than stopping or pausing to make adjustments, the system operates continuously with real-time feedback and adjustment. The measurement units continuously monitor thickness, and the control unit continuously modifies roller spacing, ensuring uniform thickness is achieved without interrupting the manufacturing flow and maintaining high productivity.
3Reliability
If simple fixed roller spacing is used, then the manufacturing process is easy to operate, but the electrochemical performance and safety of batteries deteriorate due to non-uniform thickness
Solution Approach 1:
The patent applies self-service by enabling the rolling system to automatically monitor and adjust its own parameters without external intervention. The measurement units continuously measure sheet thickness, and the control unit automatically processes this data and adjusts roller spacing accordingly. This self-regulating system ensures uniform thickness and high battery reliability while maintaining ease of operation, as the system performs all adjustments autonomously without requiring complex manual control or specialized operator skills.
Data Source
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.