Electrode Drying Chamber Airflow Balancing for Uniform Widthwise Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrode drying devices fail to maintain uniform drying in the width direction of electrode plates, leading to non-uniform drying quality and affecting product characteristics in lithium secondary batteries.
Innovation Solution
An electrode drying device with an upper adjustment unit that includes multiple exhaust and air supply nozzles, configured to adjust hot air flow rates uniformly across the electrode plate, using exhaust and air supply portions to prevent flow rate deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional drying method is used, then drying process is simple, but drying uniformity in width direction deteriorates
Solution Approach 1:
The drying device is segmented into multiple independent air supply units, each equipped with its own air supply nozzle and control mechanism. This allows separate control of hot air supply to different regions of the electrode plate, enabling uniform drying across the width direction while maintaining manageable device complexity through modular architecture
Solution Approach 2:
The patent implements local quality control by providing dedicated air supply nozzles for different regions (left, center, right) of the electrode plate. Each nozzle can independently adjust hot air supply parameters to compensate for local flow rate deviations, ensuring uniform drying quality across the entire width without requiring complete redesign of the overall drying system
2Productivity
If hot air flow rate is increased, then drying efficiency is improved, but flow rate deviation in chamber increases
Solution Approach 1:
The drying device incorporates flow rate detection mechanisms that monitor the actual hot air flow distribution within the chamber. This feedback information is used to dynamically adjust the air supply parameters of individual nozzles, maintaining uniform flow rates across the electrode plate width even at high drying efficiency settings, thus resolving the contradiction between productivity and precision
3Manufacturing precision
If single air supply unit is used, then device structure is simple, but drying uniformity across electrode plate width deteriorates
Solution Approach 1:
The air supply system is divided into multiple independent units positioned at different locations (left, center, right) corresponding to different regions of the electrode plate. Each unit operates independently with its own nozzle and control parameters, enabling localized adjustment to achieve uniform drying across the entire width while keeping each individual unit relatively simple in structure
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 device ensures uniform drying of electrode plates by maintaining consistent hot air flow rates, reducing manufacturing defects and enhancing product quality.
Implementation Method 1
an upper air supply portion between the upper exhaust portions and configured to supply the drying gas
Implementation Method 2
a pair of upper exhaust portions configured to discharge a drying gas from the chamber
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An electrode drying device includes a chamber through which an electrode plate is passable, and an upper adjustment unit in the chamber and configured to adjust hot air above the electrode plate to prevent non-uniform drying of the electrode plate due to a difference in flow rate.