Electrode Coating Width Correction Using Wet and Dry Measurements
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Solution Overview
Problem
Current battery manufacturing processes rely on manual measurement of dry coating size for size correction, leading to low precision and efficiency in controlling the coating size, which can impair battery safety.
Innovation Solution
A method and apparatus that acquire both wet and dry coating widths, calculate deviations, and determine correction amounts based on these deviations to adjust the spraying apparatus accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement of dry coating size is used for size correction, then the process is simple to operate, but the measurement precision and correction accuracy are low
Solution Approach 1:
The patent replaces manual mechanical measurement with an optical measurement system using cameras to capture images of the coating. Image processing algorithms automatically calculate coating width and deviation, eliminating the need for manual measurement tools and significantly improving measurement precision while reducing human error.
Solution Approach 2:
The patent creates a digital copy of the coating by capturing its image. This optical copy is then processed through image recognition algorithms to extract measurement data, allowing for precise and repeatable measurements without physically contacting or disturbing the coating sample.
2Productivity
If manual measurement and correction is performed, then the equipment complexity is low, but the productivity and correction efficiency are low
Solution Approach 1:
The system performs self-correction by automatically calculating the deviation between measured coating width and target width, then autonomously adjusting the coating head position. This closed-loop self-service mechanism eliminates the need for manual intervention in the correction process, significantly improving productivity.
Solution Approach 2:
The patent implements a feedback control system where measurement data from the coating is continuously fed back to the control unit. The control unit processes this information and automatically adjusts coating parameters to minimize deviation from target specifications, creating a dynamic self-correcting system that improves efficiency.
3Manufacturing precision
If only dry coating width is measured for correction, then the measurement process is simple, but the correction accuracy is low
Solution Approach 1:
The patent performs preliminary measurement of the coating dimensions before the drying process completes. By measuring the coating in its wet state and using predictive algorithms to account for drying shrinkage, the system determines the required correction amount in advance, improving accuracy without waiting for the drying process to finish.
Solution Approach 2:
The system measures multiple parameters including both wet and dry coating dimensions, as well as deviation from target width. By analyzing changes in these parameters throughout the drying process, the system accurately predicts the final corrected dimensions and optimizes the correction amount, achieving high precision while minimizing measurement time.
Data Source
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AI summary
This application provides a coating size correction method and apparatus, an device, storage medium, and a program product. 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.