Electrode Slurry Coating with Staged Width and Thickness Control
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Solution Overview
Problem
Existing electrode slurry coating apparatuses cause defects in multilayered coating layers due to uneven width adjustments, leading to non-uniform thickness distribution.
Innovation Solution
The apparatus includes a lower die, intermediate die, and upper die with specific discharge and pressing parts to adjust the width and thickness of each coating layer, ensuring uniformity by using discharge parts of varying widths and pressing parts with controlled protrusions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a doctor prepares a separate adhesive application tool for each viscosity level, then adhesive application accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a single adhesive application tool that can accommodate multiple viscosities by providing a selection of interchangeable inserts (e.g., different orifice sizes, screen mesh configurations) within one applicator body. This allows the same tool to function across multiple viscosity levels, eliminating the need for separate tools for each viscosity and reducing device complexity while maintaining adhesive application accuracy.
2Manufacturing precision
If a doctor switches between different adhesive application tools for different viscosities, then adhesive application accuracy is improved, but time to treat multiple defects increases
Solution Approach 1:
The patent incorporates multiple inserts of different configurations (varying orifice sizes, screen mesh openings, capillary dimensions) within a single application tool, allowing the practitioner to pre-select and switch between inserts based on the specific viscosity requirements of different defect locations. This preliminary preparation of multiple configurations in one tool eliminates the time-consuming process of switching between entirely separate application tools while maintaining the precision needed for each viscosity level.
3Duration of action of stationary object
If adhesive viscosity is increased to extend shelf life, then storage stability is improved, but ease of application decreases
Solution Approach 1:
The patent addresses the viscosity contradiction by providing a selection of inserts with different flow characteristics (varying orifice sizes, screen mesh configurations, capillary dimensions) that can be matched to the adhesive viscosity. Higher viscosity adhesives can be used for extended shelf life while paired with inserts that have larger openings or lower flow resistance, ensuring ease of application. This local optimization allows the system to accommodate different viscosity levels without compromising either shelf life or applicability.
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 solution effectively prevents coating defects by ensuring uniform thickness and width matching of multilayered coating layers, thereby improving the yield and stability of the electrode manufacturing process.
Implementation Method 1
a capillary tube (142) configured to receive the adhesive in the reservoir and move the adhesive from the reservoir to a dispensing tip of the capillary tube
Implementation Method 2
a heating element (132) positioned within the reservoir and configured to heat the adhesive in the reservoir
Data Source
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AI summary
The present invention relates to an electrode slurry coating apparatus comprising a lower die applying electrode slurry on a collector, an intermediate die, and an upper die, the electrode slurry coating apparatus comprising: a first discharge part primarily applying the electrode slurry on the collector to form a first coating layer; an intermediate pressing part pressing the first coating layer to expand a width of the first coating layer so as to adjust a thickness of the first coating layer; a second discharge part secondarily applying the electrode slurry on a surface of the first coating layer that is adjusted in thickness to form a second coating layer; and an upper pressing part pressing the first coating layer and the second coating layer, which are stacked, at the same time to expand a width of each of the first coating layer and the second coating layer so as to adjust a thickness of each of the first coating layer and the second coating layer, wherein the first discharge part has a width less than that of the second discharge part.