Battery Electrode Fiducial Marking for Measurement Traceability
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Solution Overview
Problem
Current manufacturing techniques lack the ability to trace on-line measurements made during the production of electrochemical cell electrodes to the assembled batteries, leading to difficulties in identifying and accessing specific data associated with electrodes incorporated into batteries.
Innovation Solution
The use of fiducial markers and tracing codes applied along the machine direction of sheet materials, enabling precise correlation of measurement profiles with tracing codes, allowing for precise same-spot scanning and improved traceability of defects to their source measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scanning sensors are used to detect sheet properties during production, then measurement capability is improved, but traceability to finished products deteriorates
Solution Approach 1:
Fiducial markers are applied to the sheet material during the coating process before the material proceeds through subsequent manufacturing stages. This preliminary marking ensures that measurement data can be correlated with specific physical locations on the final product, establishing traceability from production measurements to finished batteries.
Solution Approach 2:
Fiducial markers serve as intermediary elements that bridge the measurement system and the final product. These markers are detected by scanning sensors during production and later used to correlate measurement data with specific electrode locations in assembled batteries, enabling traceability without directly linking production equipment to finished goods.
2Loss of information
If fiducial markers are applied during coating, then traceability is improved, but manufacturing complexity increases
Solution Approach 1:
The fiducial marker application process is merged with the existing coating operation. The marker is applied to the sheet material during the coating process, combining two functions (marking and coating) into a single operational step, thereby minimizing additional manufacturing complexity while establishing traceability.
Solution Approach 2:
The fiducial marker serves multiple functions: it provides traceability for measurement data, serves as a reference for scanning sensor alignment, and can be used for quality control throughout the manufacturing process. This multi-functionality reduces the need for separate systems for each purpose.
Data Source
AI summary
A method for manufacturing battery electrodes with enhanced traceability using fiducial markers. The method includes applying tracing codes and position codes to a substrate, synchronizing measurement profiles with accompanying tracing codes, and dynamically adjusting manufacturing parameters based on marker analysis. The invention improves quality control and traceability in battery electrode production.