Electrode Plate Surface Density Measurement via Transverse Ray Scanning
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Solution Overview
Problem
The measurement accuracy of surface densities in traditional battery production processes is low due to environmental differences and scanner inconsistencies, leading to bulk scrap from over-specified lithium precipitation in lithium batteries.
Innovation Solution
A surface density measurement method involving transverse scans with a narrow spot ray source on single-sided and double-sided electrode plates, reducing the need for multiple scanners and ensuring consistent environmental conditions, thereby improving measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple rack scanners are used to measure surface densities of uncoated substrates and coated electrode plates, then measurement coverage is improved, but measurement precision deteriorates due to environmental differences and scanner inconsistencies
Solution Approach 1:
The patent combines the measurement of blank zones and coating zones into a single transverse scan process. By using one rack scanner to perform both blank zone scanning and coating zone scanning in the transverse direction, the system eliminates errors caused by multiple scanners while maintaining comprehensive measurement coverage.
Solution Approach 2:
The patent introduces transverse scanning as an additional dimension to the traditional measurement approach. Instead of only scanning along the moving direction of the electrode plate, the system performs transverse scans perpendicular to the movement direction, enabling simultaneous measurement of both blank and coating zones in a single pass.
2Loss of information
If three rack scanners are used for measuring substrate and single-sided/double-sided electrode plates, then measurement completeness is improved, but device complexity increases
Solution Approach 1:
The patent makes a single rack scanner universal by enabling it to perform multiple functions: scanning blank zones, scanning coating zones, and measuring both single-sided and double-sided electrode plates. This is achieved through transverse scanning capability that allows the scanner to adaptively measure different zones based on their positions.
Solution Approach 2:
The patent segments the electrode plate into blank zones and coating zones, and uses transverse scanning to selectively measure each segment. The system divides the measurement task into zone-specific measurements within a single scan pass, eliminating the need for multiple dedicated scanners for different plate types.
3Measurement precision
If transverse scan with narrow spot ray source is used, then measurement accuracy is improved, but scanning time increases
Solution Approach 1:
The patent maintains continuous scanning action by performing transverse scans without interrupting the electrode plate production flow. The narrow spot ray source continuously scans across the width of the electrode plate in the transverse direction while the plate moves forward, ensuring uninterrupted measurement of both blank and coating zones.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enhances measurement accuracy by minimizing environmental and scanner-induced errors, reducing costs, and improving the identification of true edge contours and surface anomalies in electrode plates.
Implementation Method 1
obtaining a single-sided-electrode-plate transverse scan result by performing a ray source-based transverse scan on a single-sided electrode plate
Data Source
AI summary
A surface density measurement method includes: obtaining a single-sided-electrode-plate transverse scan result by performing a ray source-based transverse scan on a single-sided electrode plate, where the single-sided-electrode-plate transverse scan result includes a blank zone scan result of a blank zone of the single-sided electrode plate and a single-side coating zone scan result of the single-sided electrode plate; obtaining a double-sided-electrode-plate transverse scan result by performing a ray source-based transverse scan on a double-sided electrode plate, where the double-sided electrode plate is an electrode plate obtained by coating the single-sided electrode plate, and the double-sided-electrode-plate transverse scan result includes a double-side coating zone scan result of the double-sided electrode plate; and obtaining surface densities of the electrode plate by analyzing the single-sided-electrode-plate transverse scan result and the double-sided-electrode-plate transverse scan result.