Electrode Coating Width Correction Using Wet-Dry Shrinkage
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Solution Overview
Problem
The existing battery manufacturing process relies on manual measurement for coating size correction, leading to low precision and efficiency, which can impair the safety and performance of batteries if the coating size is not accurately controlled.
Innovation Solution
A method and apparatus for acquiring wet and dry coating widths, calculating deviations, and determining correction amounts to adjust the spraying apparatus position, improving the accuracy and efficiency of coating size correction by comprehensively considering the change in coating size from a wet to a dry state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement is used to determine coating size, then the process is simple to operate, but the measurement precision and correction efficiency are low
Solution Approach 1:
The patent replaces manual mechanical measurement with an automated optical measurement system that captures images of the coating and uses image processing algorithms to automatically determine coating dimensions, eliminating the need for manual rulers or calipers and significantly improving measurement precision
Solution Approach 2:
The patent creates a digital copy (image) of the physical coating and performs measurements on this copy through computational methods, allowing for precise non-contact measurement and automatic correction amount calculation without physical intervention
2Manufacturing precision
If only dry coating width is measured for correction, then the measurement process is simple, but the correction accuracy is insufficient
Solution Approach 1:
The patent performs measurement of both wet and dry coating widths in advance, and pre-calculates the shrinkage rate before correction is needed. This preliminary data collection enables rapid and accurate correction amount determination when actual coating size deviation is detected
Solution Approach 2:
The patent establishes a feedback mechanism where the relationship between wet and dry coating widths is continuously monitored, and the calculated shrinkage rate feeds back into the correction algorithm to dynamically adjust the correction amount, improving manufacturing precision through iterative refinement
3Productivity
If automated correction system is implemented, then correction efficiency and precision are improved, but the device complexity increases
Solution Approach 1:
The patent designs a correction apparatus that performs multiple functions: automatic image acquisition, coating width measurement, shrinkage rate calculation, and correction amount determination, all in one integrated system. This multi-functionality improves productivity while managing device complexity through consolidation
Solution Approach 2:
The system automatically calculates correction amounts based on measured data without requiring manual intervention for computation or decision-making. The apparatus serves itself by autonomously completing the entire correction workflow from measurement to correction determination, significantly improving efficiency
Data Source
AI summary
A coating size correction method and apparatus, an device, storage medium, and a program product are disclosed The method includes: acquiring a first wet coating width and a first dry coating width of a first coating region on an electrode plate; calculating a first deviation between the first dry coating width and a preset coating width, and a second deviation between the first wet coating width and the first dry coating width; and determining a first correction amount based on the first deviation and the second deviation. In this application, the first correction amount for correcting the deviation is determined based on the first wet coating width and first dry coating width acquired at the same position and based on the preset coating width, thereby improving efficiency and accuracy of coating size correction.