Electrode Drying Feedback Control for Consistent Dried Level
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for drying electrodes in secondary batteries are not suitable for real-time adjustment, leading to deviations in dryness and adhesive force, which complicates the production process and makes it difficult to maintain consistent electrode quality.
Innovation Solution
A system and method for automatically controlling electrode drying by monitoring the dried amount in real time using a measuring unit and a controller to adjust the drying intensity of multiple sections within an oven, ensuring consistent dryness levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional electrode drying methods are used with predetermined initial process conditions, then the drying process is simple to operate, but the dried level deviation occurs and adhesive force varies
Solution Approach 1:
The patent implements a feedback control system where the drying process is monitored in real-time through measurements of electrode sheet properties (such as weight, temperature, or moisture content), and the drying conditions are automatically adjusted based on this feedback to maintain consistent dried level across the electrode width
Solution Approach 2:
The patent transitions from static predetermined drying conditions to dynamic adaptive control where drying parameters (such as heating power, air flow rate, or conveyor speed) are continuously adjusted during the drying process based on real-time measurements to compensate for variations and maintain precision
2Measurement precision
If drying conditions are adjusted after complete drying based on sample measurement, then the dried level can be evaluated, but the process cannot be adjusted in real time for roll-to-roll production
Solution Approach 1:
The patent performs preliminary measurements and adjustments during the drying process itself rather than waiting until completion, enabling real-time control that is compatible with continuous roll-to-roll production while maintaining measurement precision
Solution Approach 2:
The patent replaces the mechanical sampling and post-drying measurement approach with a non-contact or in-line measurement system that can evaluate dried amount during the drying process, enabling real-time feedback control without disrupting continuous production
3Manufacturing precision
If the drying process monitors and adjusts in real time, then the dried level consistency is improved, but the system complexity increases
Solution Approach 1:
The patent implements a self-regulating drying system where the control system automatically adjusts drying parameters based on real-time measurements without requiring complex external intervention, achieving precision while keeping the control architecture relatively simple through autonomous operation
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 adjustment of drying conditions to maintain consistent electrode quality, reducing deviations and improving production efficiency.
Implementation Method 1
information on at least one of a solid content and a surface temperature of the electrode sheet
Implementation Method 2
a dryer that applies hot air and/or radiant heat to the electrode sheet
Implementation Method 3
a dryer that applies hot air and/or radiant heat to the electrode sheet
Data Source
AI summary
A system for automatically controlling an electrode drying includes: an oven which provides a space where an electrode sheet is moved and dried, includes a dryer which applies hot air and/or radiant heat to the electrode sheet, and is divided into a plurality of drying sections; a measuring unit which collects information on a dried amount of the electrode sheet and transmits the collected information to a controller; and the controller which determines a dried level of the electrode sheet based on the information on the dried amount received from the measuring unit, and control a drying intensity of the oven according to the determined dried level. Herein, the controller independently controls the plurality of drying sections.