Conveyor Crease Correction for Electrode Processing
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Solution Overview
Problem
During the manufacturing of flat electrode assemblies, creases in the cell material wound on the supply roll lead to decreased processing accuracy.
Innovation Solution
A conveyor system with a corrective roller that bends one surface of the cell material into a concave shape, using a surface with a smaller radius of curvature than another roller to correct creases, ensuring accurate processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell material is wound on a supply roll for manufacturing electrode assemblies, then the cell material can be supplied continuously, but creases remain in the cell material causing decreased processing accuracy
Solution Approach 1:
The corrective roller is positioned to act on the cell material immediately after it leaves the supply roll, performing crease correction in advance before the material reaches the processing section. This preliminary action prevents creases from affecting subsequent processing operations.
Solution Approach 2:
The corrective roller uses a curved surface with a smaller radius of curvature than other rollers to bend the cell material surface into a concave shape, effectively counteracting the convex creases formed during winding and achieving surface flattening.
2Manufacturing precision
If a corrective roller with smaller radius of curvature is used to correct creases, then processing accuracy is improved, but the device complexity increases
Solution Approach 1:
Only the corrective roller that contacts the cell material surface requiring crease correction is given a smaller radius of curvature. Other rollers in the system maintain their original dimensions, allowing localized optimization without requiring redesign of the entire conveyor system.
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 system effectively corrects creases in the cell material, improving processing accuracy and maintaining tension, thereby ensuring smooth and accurate cutting of electrodes or separators.
Implementation Method 1
The corrective holding part conveyably holds the cell material, which is fed out from the supply roll, while bending one surface of the cell material that lies against the outer peripheral side of the supply roll into a concave shape
Data Source
AI summary
A conveyor is provided with a supply roll, a corrective holding part and an additional holding part. The supply roll rotatably supports a belt-shaped cell material for an electrode or a separator. The corrective holding part conveys and holds the cell material fed out from the supply roll while bending a first side surface of the cell material that lies against an outer peripheral side of the supply roll into a concave shape. The additional holding part conveys and holds the cell material while bending a second side surface of the cell material into a concave shape. The holding parts include a curved contact surfaces that contact opposite side surface of the cell material. The curved contact surface of the corrective holding part has a radius of curvature that is less than a radius of curvature of the curved contact surface of the additional holding part.