Electrode Foil Repair Coating for Bubble and Agglomerate Defects
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Solution Overview
Problem
The production of electrode foils for energy storage devices often results in imperfections such as gas or air bubbles and agglomerates, leading to costly sorting and reduced throughput.
Innovation Solution
A method involving inspection of electrode foils for imperfections, followed by application of an electrode slurry at identified imperfections, allowing for the repair and enhancement of the electrode foil quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional coating methods are used to produce electrode foils, then production speed can be maintained, but coating imperfections such as bubbles and agglomerates occur
Solution Approach 1:
The inspection unit detects coating imperfections before the electrode foil proceeds to the slurry application unit. By performing preliminary detection and intervention, the system prevents defective foils from advancing, thereby maintaining high production speed while ensuring coating quality through targeted repair actions.
2Manufacturing precision
If electrode foils with imperfections are sorted out conventionally, then product quality can be maintained, but production yield and throughput are reduced
Solution Approach 1:
Instead of discarding electrode foils with imperfections, the system recovers them by applying electrode slurry to the detected imperfections. This approach converts previously defective foils into acceptable products, maintaining high production yield while ensuring product quality through targeted repair rather than rejection.
3Reliability
If sorting out defective electrode foils is performed, then faulty products can be removed, but costly manual intervention and reduced throughput occur
Solution Approach 1:
The system replaces manual sorting operations with an automated inspection unit that detects imperfections and triggers slurry application. This mechanical-to-automated substitution eliminates costly manual intervention while maintaining product reliability, and the integrated system design prevents excessive complexity by combining inspection and repair functions in a unified production line.
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
This method reduces the percentage of faulty electrode foils, increases production yield, and ensures a higher quality of electrode foils with a lower likelihood of imperfections.
Implementation Method 1
Inspecting the electrode foil for imperfections of the coating
Implementation Method 2
Applying the electrode slurry onto the electrode foil may comprise spray coating
Implementation Method 3
Applying the electrode slurry onto the electrode foil may comprise printing the electrode slurry onto the electrode foil
Implementation Method 4
during drying, a solvent of the electrode slurry may disappear from the electrode slurry, and the electrode slurry may shrink as a consequence
Data Source
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AI summary
The present disclosure relates to a method of producing an electrode foil for an energy storage device. The method comprises providing the electrode foil comprising a metal foil and a coating including an active material. The method further comprises inspecting the electrode foil for imperfections of the coating, and upon identifying an imperfection, applying an electrode slurry onto the electrode foil at the identified imperfection.