Unit Cell Cutting Guide Holes for Separator Cutting Accuracy
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Solution Overview
Problem
The existing methods for manufacturing unit cells often result in cutting defects due to irregular cutting sections, especially when dealing with separators of large width or high strength, leading to a decrease in yield.
Innovation Solution
A method and apparatus for manufacturing unit cells that involve forming a cutting guide line with a plurality of through-holes on a pre-cell before cutting, which enhances cutting accuracy and reduces defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting is performed on separators with large width or high strength, then unit cells can be manufactured, but cutting defects are generated and cutting sections become irregular
Solution Approach 1:
The patent applies preliminary action by forming guide holes at predetermined positions on the separator before the cutting process. These guide holes serve as reference markers that enable the cutting device to accurately locate and follow the cutting path, thereby preventing cutting defects and ensuring regular cutting sections even when dealing with large-width or high-strength separators
2Manufacturing precision
If cutting is performed on separators with large width or high strength, then unit cells can be manufactured, but cutting sections become irregular
Solution Approach 1:
The patent applies preliminary action by forming guide holes at predetermined positions on the separator before the cutting process. These guide holes serve as reference markers that enable the cutting device to accurately locate and follow the cutting path, thereby preventing cutting defects and ensuring regular cutting sections even when dealing with large-width or high-strength separators
Data Source
AI summary
A method for manufacturing unit cells includes preparing a pre-cell having a first separator sheet and a plurality of first electrodes disposed on the first separator sheet while being spaced apart from one another; forming a cutting guide line having a plurality of though-holes spaced apart from one another on the pre-cell; and cutting the pre-cell along the cutting guide line to form a plurality of unit cells. An apparatus for manufacturing unit cells includes a hole-forming unit configured to form a cutting guide line on a pre-cell having a separator sheet and electrodes disposed on the separator sheet where the cutting guide line has a plurality of though-holes spaced apart from one another; and a cutting unit configured to cut the pre-cell along the cutting guide line to form a plurality of unit cells.