Dual-Sided Infrared Electrode Sheet Drying for Uniform Heating
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Solution Overview
Problem
Existing drying devices for electrode sheets face inefficiencies in drying thicker sheets quickly, leading to non-uniform heating, crimping, warping, cracking, and sticking to rollers due to large thermal stress differences on the sheet's sides.
Innovation Solution
A drying device with first and second infrared drying assemblies on opposite sides of the drying channel uniformly heats both sides of the electrode sheet using infrared radiation, reducing thermal stress differences and enhancing drying efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hot air drying is used, then energy consumption is low, but drying efficiency is low and cannot meet high-speed drying requirements for thicker electrode sheets
Solution Approach 1:
The patent combines infrared drying assemblies with the hot air drying system, creating a hybrid drying mechanism. The infrared assemblies provide rapid penetrative heating while the hot air system continues to provide convective drying, achieving high efficiency without excessive energy consumption.
Solution Approach 2:
The infrared drying assemblies are activated during specific phases of the drying process to provide rapid initial heating, then the hot air system takes over for gradual moisture removal, creating a periodic action pattern that optimizes both speed and energy efficiency.
2Productivity
If single-sided infrared drying is used, then drying speed increases, but thermal stress difference causes crimping, warping, and cracking
Solution Approach 1:
The patent uses asymmetric arrangement of drying assemblies with different configurations on each side of the electrode sheet, allowing independent control of heating intensity to compensate for thermal stress differences and prevent deformation.
Solution Approach 2:
The drying system is designed to create uniform thermal fields across both sides of the electrode sheet by adjusting the infrared assemblies' positions and intensities, eliminating thermal potential differences that cause warping and cracking.
3Productivity
If high-intensity infrared heating is applied to one side, then drying efficiency improves, but the electrode sheet cracks or sticks to the roller due to large thermal stress difference
Solution Approach 1:
The patent positions infrared drying assemblies on both sides of the electrode sheet to create counterbalancing thermal fields, where the heating on one side compensates for the thermal stress generated on the other side, preventing cracking and sticking while maintaining high drying efficiency.
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 solution achieves uniform heating, preventing crimping, warping, cracking, and sticking, while improving drying speed and reducing energy consumption.
Implementation Method 1
a plurality of first infrared drying assemblies arranged on an inner wall of the first drying section and located on the first side of the drying channel; a plurality of second infrared drying assemblies arranged on the inner wall of the first drying section and located on the second side of the drying channel
Data Source
AI summary
A drying device is provided and is configured to dry an electrode sheet. The drying device includes: a box body, a plurality of first infrared drying assemblies, and a plurality of second infrared drying assemblies. The box body defines a drying channel extending through the box body. The electrode sheet is capable of being conveyed in the drying channel; the drying channel has a first side and a second side opposite to the first side; the box body includes a first drying section arranged along a conveying direction of the electrode sheet. The plurality of first infrared drying assemblies are arranged on an inner wall of the first drying section and located on the first side of the drying channel. The plurality of second infrared drying assemblies are arranged on the inner wall of the first drying section and located on the second side of the drying channel.