Electrode Patterning and Substrate Laser Cutting Without Thermal Damage
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Solution Overview
Problem
Current electrode manufacturing methods face challenges in achieving high design flexibility, quality, and productivity, particularly due to thermal damage during laser cutting and the need for lengthy processing times, which increase costs and reduce efficiency.
Innovation Solution
An electrode manufacturing method involving the application of an electrode liquid composition in a desired shape on a substrate, followed by acquiring positional information, and cutting only the substrate in regions outside the electrode mixture material areas using laser technology, thereby avoiding thermal damage to the electrode mixture layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laser cutting is used to cut the electrode including the electrode mixture layers, then design flexibility is improved, but thermal damage to the electrode mixture layers occurs causing quality deterioration
Solution Approach 1:
The patent extracts the electrode mixture layers from the cutting process by applying the coating in a desired shape before cutting. Only the substrate is cut by laser, while the coated regions are excluded from the cutting path. This separates the cutting operation from the sensitive electrode mixture material, eliminating thermal damage while maintaining design flexibility through digital pattern control.
2Manufacturing precision
If laser scanning speed is reduced or number of scans is increased to cut the electrode mixture layers, then cutting quality is improved, but processing time increases reducing productivity
Solution Approach 1:
The patent removes the electrode mixture layers from the laser cutting process entirely by pre-defining their shape through coating. The laser only processes the substrate in non-coated regions, which requires minimal scanning and achieves high cutting speed without compromising quality, since the sensitive material is not exposed to prolonged laser exposure.
3Ease of manufacture
If conventional punching method is used to machine the electrodes, then manufacturing simplicity is maintained, but design flexibility is limited and chipping occurs
Solution Approach 1:
The patent replaces the mechanical punching system with a laser-based cutting system. Instead of using physical dies that require redesign and replacement for different shapes, the invention uses laser scanning controlled by digital patterns. This substitution eliminates mechanical chipping while providing unlimited design flexibility through software-controlled cutting paths.
4Manufacturing precision
If punching die is redesigned and replaced to change battery shape, then manufacturing accuracy is maintained, but production time increases and cost rises
Solution Approach 1:
The patent replaces the mechanical die system with laser cutting controlled by digital patterns. Shape changes are achieved by simply updating the digital cutting path data rather than physically redesigning and replacing dies. This eliminates setup time and allows immediate production of different shapes while maintaining high precision through laser control, significantly reducing production time and cost.
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 approach enables high design flexibility, maintains high quality, and enhances productivity by preventing thermal damage to the electrode mixture layers during cutting, thus reducing production costs and time.
Implementation Method 1
an electrode cutting technique using a laser has been proposed
Implementation Method 2
there is a concern that thermal damage to the area around the electrode cutting portion may cause a deterioration in battery performance
Data Source
AI summary
An electrode manufacturing method includes a first step of applying an electrode liquid composition in a desired shape at a desired position on a substrate, the electrode liquid composition containing an electrode mixture material; a second step of acquiring positional information as to where the electrode liquid composition is applied; and a third step of cutting only the substrate at a desired position in a region other than an electrode mixture material region where the electrode liquid composition is applied to obtain an electrode cut out in a desired shape.