Electrode Drying Line With Segmented IR Heating and Cleaning
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Solution Overview
Problem
The presence of moisture in the coating agent of electrodes affects the performance of secondary batteries, and existing drying methods do not effectively remove foreign substances or uniformly control temperature distribution during the drying process.
Innovation Solution
An electrode drying facility and method that includes a heating roller unit, heater units with laser beams, temperature sensors, and a control unit to manage heating segments, along with cleaning and cooling equipment to remove foreign substances and uniformly distribute temperature, using heat conduction and radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single heater unit is used to dry the electrode, then the drying process is simple, but the temperature distribution is non-uniform
Solution Approach 1:
The heater unit is divided into multiple heating segments (first heater assembly and second heater assembly) that can be independently controlled. Each segment targets specific regions of the electrode, allowing for uniform temperature distribution across the entire electrode surface while maintaining a relatively simple overall drying process structure.
2Productivity
If the electrode is heated at high temperature to remove moisture efficiently, then drying speed increases, but foreign substances attach to the electrode surface
Solution Approach 1:
The electrode cleaning equipment is positioned to operate on the electrode before it enters the heating zone. This preliminary cleaning action removes foreign substances from the electrode surface before high-temperature heating occurs, preventing contamination while maintaining efficient drying speed through subsequent high-temperature treatment.
3Object-affected harmful factors
If the electrode is cooled immediately after heating to prevent foreign substance attachment, then contamination is reduced, but moisture removal is insufficient
Solution Approach 1:
The drying process maintains continuous heating through multiple heater assemblies arranged in sequence along the electrode transport path. The first heater assembly performs preliminary heating and moisture removal, while the second heater assembly provides additional heating if needed. This continuous heating action ensures thorough moisture removal while the cleaning equipment operates at appropriate intervals to prevent contamination.
4Manufacturing precision
If multiple heating segments are used to control temperature distribution, then temperature uniformity improves, but device complexity increases
Solution Approach 1:
The heater unit is segmented into multiple independently controllable heating segments (first heater assembly and second heater assembly). Each segment can be controlled separately to achieve uniform temperature distribution across the electrode width and length, while the modular segmented structure keeps the overall device design manageable and not excessively complex.
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
Effectively dries electrodes by removing moisture and foreign substances while ensuring uniform temperature distribution, enhancing the quality and performance of secondary batteries.
Implementation Method 1
heating the electrode firstly, acquiring information on a temperature of the electrode, and heating the electrode secondly according to the information on the temperature of the electrode
Implementation Method 2
The heater unit may irradiate a laser beam containing infrared rays to the electrode
Implementation Method 3
an ultrasonic generator irradiating an ultrasonic wave on the electrode
Data Source
AI summary
Facility and method for drying electrode are disclosed. The electrode drying facility according to an embodiment of this disclosure is transporting and drying an electrode extended in the longitudinal direction and comprises a heating roller unit including a heating roller that forms a roller shape and transports the electrode and heats the electrode, a heater unit heating the electrode drawn from the heating roller unit, an electrode cooling equipment cooling the electrode drawn from the heater unit, wherein the heater unit irradiates a laser beam containing infrared rays to the electrode.