Air-Floating Electrode Drying to Prevent Wrinkles and Folding
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Solution Overview
Problem
The existing drying devices for manufacturing electrodes face challenges in managing thermal expansion deviations between coated and uncoated portions, leading to wrinkles and folding issues, which are difficult to address without compromising processability or damaging the coated areas.
Innovation Solution
A drying device incorporating an air floating plate with controlled discharge ports and a traveling part to float and transfer the electrode base material using air, minimizing thermal expansion deviations and preventing wrinkles and folding by adjusting air pressure and temperature according to the electrode's specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cooling device or crease roller is introduced to solve thermal expansion deviation, then wrinkles and folding are reduced, but processability is degraded due to fixed specifications and additional space requirements
Solution Approach 1:
The patent changes the physical state of the electrode base material by controlling temperature parameters during drying. By adjusting drying temperature and time parameters, the thermal expansion deviation is managed without requiring additional mechanical devices, thus maintaining processability while improving manufacturing precision.
Solution Approach 2:
The patent introduces a traveling roller that can dynamically adjust its position and pressure to accommodate different electrode specifications. This dynamic adjustment capability allows the same device to handle various electrode widths and types, maintaining adaptability while addressing thermal expansion issues through controlled mechanical interaction.
2Manufacturing precision
If a crease roller is applied to smooth wrinkles, then folding is improved, but the coated portion may be damaged and the effect is insignificant for multiple coated portions
Solution Approach 1:
The patent applies preliminary action by controlling the drying process to prevent thermal expansion deviation before it causes wrinkles. By managing the drying temperature and time parameters in advance, the electrode base material is dried uniformly, preventing wrinkle formation that would require subsequent mechanical smoothing and potential damage to the coated portions.
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 effectively prevents wrinkles and folding in the uncoated portions while maintaining the integrity of the coated areas, offering improved processability by allowing for flexible adjustments in the air floating plate's design to match specific electrode specifications.
Implementation Method 1
a floating part configured to float the electrode base material using air
Implementation Method 2
the dryer removes a solvent in the slurry using high heat
Implementation Method 3
The air floating plate may include discharge ports configured to discharge air to a surface on which the electrode base material travels
Data Source
AI summary
A drying device for manufacturing an electrode comprises a dryer and a transfer part. The dryer is configured to dry a coated portion of an electrode base material when an electrode slurry is applied to the coated portion on at least one surface and not applied to an uncoated portion. The transfer part includes a floating part and a traveling part coupled to an outlet of the dryer. The floating part includes an air floating plate and is configured to float the electrode base material using air. The traveling part is configured to move the electrode base material in a process direction. A method for manufacturing an electrode includes drying an electrode base material in which electrode slurry is applied on a least one surface of the electrode base material at a high temperature, and floating and transferring the electrode base material using air.