Pressure Bonding Roller Structure for Lithium Foil Alignment
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Solution Overview
Problem
The misalignment of lithium foil during transfer to the negative electrode current collector in the manufacturing of electrode plates poses a challenge, affecting the accuracy of the manufacturing process.
Innovation Solution
A manufacturing apparatus with a pair of pressure bonding rollers, each with a D-cut surface and protrusions, synchronizes the pressure bonding process to ensure precise alignment and formation of interval portions, enhancing the accuracy of electrode plate manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a lithium foil is transferred to the hole of the negative electrode current collector using conventional methods, then the manufacturing process can be completed, but misalignment occurs during transfer reducing manufacturing accuracy
Solution Approach 1:
The pressure bonding roller is segmented into different surface regions: a D-cut surface portion and a cylindrical surface portion. This segmentation allows different regions to perform different functions - the D-cut surface provides pressure bonding while the cylindrical surface with protrusions creates interval portions, thereby preventing misalignment and improving transfer reliability
Solution Approach 2:
The protrusions on the cylindrical surface portion of the pressure bonding roller preliminarily form interval portions in the lithium foil before the D-cut surface performs the main pressure bonding. This preliminary action ensures proper positioning and alignment of the lithium foil, preventing misalignment during the transfer process
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 apparatus improves the manufacturing accuracy of electrode plates by preventing misalignment and facilitating easy peeling of surplus and interval portions, resulting in higher quality production.
Implementation Method 1
the first metal foil and the second metal foil are pressure bonded by a rotation of the pair of pressure bonding rollers
Data Source
AI summary
A first pressure bonding roller 110 and a second pressure bonding roller 112 have a cylindrical shape. A first metal foil 200 and a second metal foil 202 are inserted between the first pressure bonding roller 110 and the second pressure bonding roller 112. The first metal foil 200 and the second metal foil 202 are pressure bonded by a rotation of the first pressure bonding roller 110 and the second pressure bonding roller 112. The first pressure bonding roller 110 includes a D-cut surface at least in a portion of the cylindrical shape. A protrusion is provided in each of two boundaries between a side surface and the D-cut surface of the cylindrical shape in the first pressure bonding roller 110.