Dancer Roll Electrode Sheet Cutter for Defect Removal
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Solution Overview
Problem
Existing secondary battery manufacturing processes lack efficiency in removing defective parts of electrode sheets, which affects productivity and operator safety.
Innovation Solution
A secondary battery manufacturing apparatus and method utilizing a dancer roll to change the driving path of an electrode sheet, a cutter to separate it into first and second sheets, and a scrap winder to remove defective parts, with automated control by a programmable logic controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated equipment is introduced to remove defective parts, then productivity and safety are improved, but device complexity increases
Solution Approach 1:
The system is divided into distinct functional modules: a dancer roll for path modification, a cutter for defect removal, and a scrap winder for collecting removed portions. Each module performs a specific function independently, allowing the complex automated system to be managed through modular components that can be controlled and maintained separately.
Solution Approach 2:
The dancer roll acts as an intermediary device that modifies the driving path of the electrode sheet, enabling the cutter to access and remove defective parts without disrupting the continuous feeding mechanism. This intermediary component facilitates the interaction between the continuous transport system and the intermittent defect removal operation.
2Extent of automation
If the dancer roll changes the driving path of the electrode sheet, then automated defect removal is enabled, but tension control becomes more challenging
Solution Approach 1:
The dancer roll is designed to be movable rather than fixed, allowing it to dynamically adjust its position to accommodate changes in electrode sheet tension. This dynamic capability enables the system to maintain stable tension control while the roll modifies the driving path for automated defect removal operations.
Data Source
Figure 1
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AI summary
Exemplary embodiments of the present technology provide a secondary battery manufacturing apparatus. The secondary battery manufacturing apparatus includes a dancer roll configured to change the path of travelling of an electrode sheet; a cutter configured to cut the electrode sheet adjacent to the dancer roll into first and second electrode sheets; and a discarded portion winder configured to wind defective portions of the first electrode sheet.