Electrode Drying Chamber Airflow Layout 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 to ensure uniform drying by alternately disposing exhaust and air supply portions, thereby preventing flow rate deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional drying device is used, then the electrode plate can be dried, but non-uniform drying occurs in the width direction due to flow rate differences
Solution Approach 1:
The drying device divides the air supply and exhaust functions into multiple segmented nozzles arranged across the width of the electrode plate. The air supply unit includes multiple air supply nozzles, and the exhaust unit includes multiple exhaust nozzles, both spaced across the width direction. This segmentation allows independent control of airflow at different positions, enabling uniform drying across the entire width by addressing local flow rate variations.
Solution Approach 2:
The patent implements local quality by providing different airflow characteristics at different positions across the width of the electrode plate. The air supply nozzles and exhaust nozzles are arranged to create localized airflow patterns that compensate for position-dependent flow rate deviations. Each nozzle group can be optimized for its specific location, ensuring that every region of the electrode plate receives appropriate drying conditions tailored to its local requirements.
2Productivity
If hot air flow rate is increased to improve drying speed, then productivity increases, but flow rate deviation in the chamber worsens leading to non-uniform drying
Solution Approach 1:
The air supply unit is divided into multiple air supply nozzles arranged across the width of the electrode plate, and the exhaust unit is divided into multiple exhaust nozzles. This segmentation allows high total airflow rates for fast drying while distributing the flow evenly across different positions. Each nozzle group manages local airflow independently, preventing the flow rate deviations that would occur with a single high-velocity stream.
Solution Approach 2:
The exhaust nozzles act as intermediaries between the high-velocity hot air supply and the electrode plate surface. By positioning exhaust nozzles in alternating arrangement with air supply nozzles and configuring them to face the electrode plate, the system mediates the hot air flow to distribute it uniformly across the width. The exhaust nozzles help regulate and redirect the airflow, ensuring that high productivity does not compromise drying uniformity.
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 achieves uniform drying of electrode plates by resolving flow rate deviations, enhancing the quality and consistency of electrode manufacturing.
Implementation Method 1
an upper air supply portion between the upper exhaust portions and configured to supply the drying gas
Implementation Method 2
an upper exhaust portion configured to discharge the drying gas from the chamber
Data Source
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.