Electrode Plate Drying with Edge Cooling for Uniform Solvent Removal
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Solution Overview
Problem
Conventional drying apparatuses for rechargeable batteries often result in uneven drying of electrode plates due to differences in drying rates between the central and end portions, leading to quality issues.
Innovation Solution
A drying apparatus with a hot air supply portion and a cold air supply portion that uniformly dries the electrode plate by adjusting temperatures and airflow, using a cold air supply member to balance thermal distribution across the electrode plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only hot air supply is used to dry the electrode plate, then drying speed is improved, but drying uniformity deteriorates due to excessive heat at edges causing uneven drying
Solution Approach 1:
The patent applies local quality by introducing cold air specifically at the edge portions of the electrode plate where excessive heat accumulation occurs. The cold air supply unit is positioned to target only the edge regions, providing localized cooling to balance the thermal distribution across the plate width, thereby achieving uniform drying without compromising overall drying speed
Solution Approach 2:
The patent implements preliminary anti-action by preemptively applying cold air to the edge portions before they overheat. This preventive cooling counteracts the tendency of edges to receive excessive hot air, maintaining thermal balance throughout the drying process and preventing drying uniformity issues before they occur
2Reliability
If hot air temperature is increased to reduce solvent residue, then drying effectiveness is improved, but thermal imbalance across the electrode plate worsens
Solution Approach 1:
The patent uses local quality by directing cold air specifically to edge portions where thermal accumulation occurs during high-temperature drying. This localized cooling maintains thermal balance across the plate, allowing effective solvent removal from the center while preventing edge overheating, thus preserving thermal distribution stability
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the temperature distribution across different regions of the electrode plate. High temperature is maintained in the center for effective drying, while cold air supplementation at edges creates a controlled thermal gradient, optimizing both drying effectiveness and thermal stability simultaneously
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 apparatus ensures uniform drying of the electrode plate by adjusting temperatures and airflow, reducing solvent residue and improving drying quality compared to conventional methods.
Implementation Method 1
a cold air supply portion that supplies a cold air to both sides along a width direction of the electrode plate
Implementation Method 2
a hot air supply portion that supplies a hot air to an electrode plate
Data Source
AI summary
A drying apparatus for manufacturing a rechargeable battery of the present disclosure includes: a hot air supply portion that supplies a hot air to an electrode plate; and a cold air supply portion that supplies a cold air to both sides along a width direction of the electrode plate.