Electrode Drying Zone Control Using Surface Temperature Feedback

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Solution Overview

Problem

Existing electrode drying methods rely on visual inspection to identify constant rate sections, leading to inaccurate determination of drying zones and inconsistent adhesive force, which affects the quality and efficiency of the drying process.

Innovation Solution

An electrode drying system that automatically determines first drying zones based on electrode surface temperature and adjusts heat supply quantities to maintain a constant rate state, allowing for precise control of adhesive force and drying rate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If visual inspection is used to identify constant rate sections, then the drying process can be performed, but the determination of drying zones is inaccurate and inconsistent

Engineering Contradiction:
Improvedetermination accuracy of constant rate sectionVSAvoidoperational complexity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the manual visual inspection method with an automated temperature measurement and control system. Temperature sensors continuously monitor the electrode surface temperature in each drying zone, and a control unit automatically determines the constant rate section based on temperature data, eliminating subjective visual assessment and improving measurement precision.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system implements feedback control by continuously measuring the electrode surface temperature in each drying zone and using this information to automatically adjust the drying process. The control unit receives temperature data, determines whether the electrode is in a constant rate section, and adjusts heat supply accordingly, creating a closed-loop control system that improves determination accuracy.

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If the number of drying zones is increased to improve drying quality, then the drying precision improves, but the system complexity increases

Engineering Contradiction:
Improvedrying qualityVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The drying system is divided into multiple discrete drying zones, each equipped with independent temperature sensors and heat supply control. This segmentation allows precise control of temperature in each zone, enabling accurate identification of the constant rate section and improving drying quality through localized optimization.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system dynamically adjusts the heat supply in each drying zone based on real-time temperature measurements and the determined constant rate section location. The control unit modifies heating parameters automatically during the drying process, allowing the system to adapt to changing conditions and maintain optimal drying quality without requiring a fixed complex structure.

Inventive Principle:
Principle #15Dynamics

3Reliability

If automatic temperature-based control is implemented, then the adhesive force consistency improves, but the device complexity increases

Engineering Contradiction:
Improveadhesive force consistencyVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control unit continuously receives temperature data from sensors in each drying zone and automatically adjusts heat supply to maintain consistent adhesive force. By using temperature as a feedback parameter, the system ensures that the electrode remains in the constant rate section for the desired duration, producing consistent adhesive force without requiring complex manual intervention.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-adjustment by automatically determining the constant rate section based on temperature measurements and autonomously controlling the heat supply in each drying zone. This self-service capability ensures consistent adhesive force while minimizing the need for external intervention, making the increased device complexity worthwhile through improved reliability.

Inventive Principle:
Principle #25Self-service

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 enhances drying quality, efficiency, and productivity by accurately determining and adjusting drying zones and heat quantities, ensuring consistent adhesive force and optimal drying rates.

Implementation Method 1

a plurality of temperature sensors provided in each of the plurality of drying zones and measuring a surface temperature of the drying target electrode in each of the drying zones

Methodology Applied
Scientific EffectTemperature measurement:

Implementation Method 2

The drying process is performed while sequentially passing a drying target electrode through multiple drying zones arranged along one direction

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 3

a heat supply part provided to provide a preset heat supply quantity to the drying space

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentEP4668347A1Electrode drying system and electrode drying method
Publication Date: 2025.12.24 LG ENERGY SOLUTION LTD
  • EP4668347A1 patent drawingFigure 1
  • EP4668347A1 patent drawing
  • EP4668347A1 patent drawing

AI summary

The present application provides an electrode drying system and an electrode drying method that number adjustment of first drying zones and heat quantity compensation in drying zones around the first drying zones can be automatically performed by determining locations of first drying zones in a constant rate section state, to which a drying target electrode moves, based on an electrode surface temperature, and adjusting the desired adhesive force and drying rate of the drying target electrode.