Electrode Plate Surface Density Measurement with Unified Transverse 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 in lithium batteries.
Innovation Solution
A surface density measurement method using two rack scanners to perform transverse scans on single-sided and double-sided electrode plates, utilizing a narrow spot ray source to enhance resolution and minimize environmental and scanner-induced inaccuracies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three rack scanners are used to measure uncoated substrate, single-sided electrode plate, and double-sided electrode plate separately, then the measurement process can be completed, but the measurement accuracy is low due to environmental differences and scanner inconsistencies
Solution Approach 1:
The patent combines the functions of three separate rack scanners into a single rack scanner that performs both longitudinal and transverse scanning. This unified scanning system eliminates the environmental differences and scanner inconsistencies that arise when using multiple separate scanners, thereby improving measurement accuracy while reducing device complexity
Solution Approach 2:
The patent introduces transverse scanning as an additional dimension to the traditional longitudinal scanning approach. By performing scans in both longitudinal and transverse directions, the system obtains comprehensive surface density data that compensates for the limitations of single-direction scanning and improves overall measurement precision
2Measurement precision
If multiple rack scanners are used in different environments, then the measurement process can be completed, but environmental differences affect measurement accuracy
Solution Approach 1:
By consolidating all measurements into a single rack scanner operating in a consistent environment, the patent eliminates the harmful effect of environmental differences between scanners. The unified system performs all scans (uncoated substrate, single-sided, and double-sided electrode plates) under identical environmental conditions, ensuring measurement accuracy
3Reliability
If three rack scanners are used with different scan positions and trajectories, then the measurement process can be completed, but same-point accuracy difference among scanners reduces measurement reliability
Solution Approach 1:
The patent merges the functionality of three scanners with different configurations into a single rack scanner with programmable scan trajectories. This unified system can replicate any required scan pattern while ensuring that measurements at the same point are always taken by the same scanner, eliminating same-point accuracy differences and improving reliability
Solution Approach 2:
The patent employs dynamic scan trajectory control where the rack scanner can adaptively adjust its scanning path based on the specific measurement requirements. This dynamic capability allows the system to perform longitudinal scans, transverse scans, and combination scans as needed, providing flexibility without compromising measurement reliability
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
Improves measurement accuracy by reducing environmental and scanner-induced errors, enhancing the precision of surface density determination in lithium battery production.
Implementation Method 1
a radiation source, a sensor disposed opposite to the radiation source
Data Source
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AI summary
This application relates to a surface density measurement method and system. The 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.