Electrode Slurry Coating With Real-Time Thickness Feedback
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Solution Overview
Problem
Existing electrode coating technologies face challenges in achieving uniform thickness of electrode slurry, particularly at the edge portions, due to variations in discharge pressure within the coating die, leading to quality issues and a lack of effective thickness management methods.
Innovation Solution
An electrode coating apparatus equipped with a thickness measuring sensor and a controller that measures the slurry thickness in real time, allowing for precise adjustment of the coated amount to maintain uniformity, including the use of a confocal sensor for accurate measurements and a drying unit for post-coating processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the coating die size increases and coating speed increases to enhance production efficiency, then productivity is improved, but the uniformity of coating liquid discharge throughout the coating die deteriorates
Solution Approach 1:
A thickness measuring sensor measures the thickness of the electrode slurry in real time during the coating process. The controller receives this measurement and adjusts the coated amount dynamically to maintain uniform thickness, enabling high-speed coating while preserving coating quality through closed-loop control
Solution Approach 2:
The system transitions from static coating parameters to dynamic adjustment by continuously measuring thickness and modifying the coated amount in real time based on actual conditions, allowing the coating process to adapt and maintain uniformity even at high speeds
2Manufacturing precision
If real-time measurement and control of electrode slurry thickness is implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system replaces complex mechanical thickness control mechanisms with a combination of optical measurement (thickness measuring sensor) and electronic control, which achieves more precise and responsive thickness management with simpler overall system architecture
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
Enables real-time recognition and adjustment of thickness distribution, ensuring consistent electrode slurry thickness across the current collector, thereby enhancing the quality and efficiency of the electrode coating process.
Implementation Method 1
a thickness measuring sensor which is positioned to be spaced apart from the current collector by a predetermined interval and measures a thickness of the coated electrode slurry in real time after coating by the coating die
Data Source
AI summary
A method and apparatus for coating an electrode is disclosed herein. In some embodiments, an apparatus for coating an electrode slurry includes a coating die configured to coat an electrode slurry on one surface of a current collector, a thickness measuring sensor spaced apart from the current collector by a predetermined interval and configured to measure a thickness of the coated electrode slurry in real time after coating by the coating die; and a controller which controls a coated amount of the electrode slurry in real time according to the measured thickness.