Electrode Coating Alignment Correction Using Edge Distance Feedback
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Solution Overview
Problem
The production process of batteries is complex, and coating deviations during the coating procedure can significantly affect battery performance, leading to increased product defects and manufacturing costs due to misalignment between the A and B surfaces of the electrode plate.
Innovation Solution
A method and apparatus for determining a target deviation correction amount by measuring distances from the edges of coating regions on both surfaces of the electrode plate substrate to a reference edge, using preset deviation correction amounts to align the surfaces within specification ranges, involving initial deviation corrections and selecting appropriate correction amounts based on misalignment values to improve accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If coating procedure is performed on electrode plate substrate, then coating layer is formed on the substrate, but coating misalignment between A and B surfaces occurs affecting battery performance
Solution Approach 1:
The patent measures the distances from coating edges to reference edges on both A and B surfaces before coating completion, calculates misalignment values, and determines correction amounts in advance. This preliminary measurement and calculation enables proactive correction of coating misalignment before it affects battery assembly, resolving the contradiction by preventing defects rather than reacting to them.
Solution Approach 2:
The patent establishes a feedback loop where coating edge positions are measured, misalignment is calculated, correction amounts are determined, and then applied to adjust the coating process. This closed-loop feedback system continuously monitors and corrects coating alignment, ensuring manufacturing precision while maintaining battery performance reliability.
2Manufacturing precision
If deviation correction is performed to improve coating alignment, then coating misalignment is reduced, but correction amount determination complexity increases
Solution Approach 1:
The patent divides the correction determination process into distinct segments: measuring distance from coating edge to reference edge on A surface, measuring distance on B surface, calculating misalignment by comparing measurements, and determining correction amount based on misalignment. This segmentation simplifies the overall complex task into manageable steps, reducing determination complexity while maintaining precision.
Solution Approach 2:
The patent uses parameter changes by calculating correction amounts based on measured distance parameters and misalignment values. By establishing correction amounts as functions of measured parameters (distances and misalignment values), the system transforms a complex qualitative correction problem into a quantitative calculation based on simple distance measurements, reducing determination complexity.
Data Source
AI summary
A coating deviation correction method includes: acquiring a first distance and a second distance, where the first distance is a distance from an edge of a coating region on a first surface of an electrode plate substrate to a reference edge, and the second distance is a distance from an edge of a coating region on a second surface of the electrode plate substrate to the reference edge; and determining a target deviation correction amount in a coating process based on the first distance, the second distance, and at least one preset deviation correction amount. The target deviation correction amount can be determined with high efficiency and accuracy by using the method.