Electrode Slurry Drying With Feedback Humidity Control
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Solution Overview
Problem
Existing electrode manufacturing processes face challenges in maintaining optimal humidity conditions during the drying of electrode slurry, leading to surface cracks due to unsuitable humidity and temperature changes, which affects the quality and efficiency of battery production.
Innovation Solution
An electrode manufacturing apparatus and method that includes a system to monitor and control humidity by supplying high-temperature vapor, using sensors to measure humidity, and adjusting the humidification and discharge of vapor to maintain optimal conditions, ensuring the prevention of cracks and consistent electrode quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-temperature vapor is supplied to dry the electrode slurry, then drying efficiency is improved, but humidity control becomes difficult leading to surface cracks
Solution Approach 1:
The patent implements a feedback control system where humidity sensors continuously monitor the humidity level in the drying chamber, and the controller adjusts the vapor supply and air introduction rates accordingly to maintain optimal humidity conditions, preventing surface cracks while maintaining high drying efficiency
Solution Approach 2:
The patent dynamically changes multiple parameters including vapor supply rate, air introduction rate, and drying temperature based on real-time humidity measurements and electrode characteristics, allowing optimal drying conditions to be maintained throughout the drying process
2Manufacturing precision
If humidity is increased to prevent cracks, then electrode quality is improved, but drying time increases
Solution Approach 1:
The patent employs periodic adjustment of humidity levels during the drying process, using high humidity during critical phases when cracks are most likely to form, and reducing humidity when the electrode structure is more stable, thereby preventing cracks while minimizing total drying time
Solution Approach 2:
The patent dynamically adjusts humidity conditions based on the drying stage and electrode state, transitioning from higher humidity in early drying stages to lower humidity in later stages, optimizing both crack prevention and drying efficiency throughout the 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 system effectively controls humidity to prevent cracks in electrodes, maintaining optimal conditions despite changes in the drying target, outside humidity, and temperature, thereby improving the efficiency and quality of electrode production.
Implementation Method 1
an air supply part configured to supply high-temperature vapor onto the electrode precursor
Implementation Method 2
a sensor configured to measure humidity of the introduced high-temperature vapor
Implementation Method 3
a humidifying part configured to humidify the high-temperature vapor that circulates from the air introducing part toward the air supply part
Data Source
AI summary
An electrode manufacturing apparatus includes a supply part to supply an electrode precursor, a drying part to dry the electrode slurry, an air supply part to supply high-temperature vapor, an air introducing part to introduce the supplied high-temperature vapor, a flow path connected from the air introducing part to the air supply part, a sensor to measure humidity, an air discharge part, and a humidifying part to humidify the high-temperature vapor. The apparatus further includes a discharge part to discharge the manufactured electrode, a monitoring part, and a control part to collect monitoring information and information on the humidity to control whether to open or close the air discharge part and a degree of humidification by the humidifying part. An electrode manufacturing method using the apparatus thereof.