Infrared Electrode Heating for Battery Drying
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Solution Overview
Problem
The existing drying process for electrode active materials in secondary battery manufacturing is time-consuming, leading to reduced productivity due to the use of hot air, which can deteriorate the electrode.
Innovation Solution
An electrode heating device with a heating body and heating member that directly heats and dries the electrode surface, using a plurality of heating lamps installed on a mounting part within a drying space, along with transfer rollers and an exhaust system to efficiently remove moisture, thereby reducing working time and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If hot air drying process is used, then the electrode can be dried, but the drying time is long and productivity is reduced
Solution Approach 1:
The patent replaces the conventional hot air drying system with an infrared heating system. The infrared heater directly irradiates the electrode surface with infrared radiation, enabling rapid moisture evaporation without the need for prolonged hot air exposure. This substitution reduces drying time from minutes to seconds, significantly improving electrode manufacturing productivity while maintaining effective drying capability.
Solution Approach 2:
The patent changes the drying method from thermal convection (hot air) to radiant heating (infrared). By altering the heating parameter from convective heat transfer to radiant heat transfer, the drying process becomes much faster and more efficient. The infrared radiation directly penetrates and heats the electrode and moisture, enabling rapid phase change and evaporation without requiring long exposure times to hot air.
2Reliability
If hot air drying process is used, then the electrode can be dried, but the electrode is significantly deteriorated
Solution Approach 1:
The patent substitutes the hot air drying system with an infrared heating system that provides more controlled and uniform heating. The infrared radiation directly heats the moisture on the electrode surface without requiring prolonged exposure to high-temperature hot air, thereby preventing thermal degradation of the electrode active material and maintaining electrode quality and reliability.
Solution Approach 2:
The infrared heating system rapidly heats and evaporates moisture in a very short time, skipping the prolonged hot air exposure that causes electrode deterioration. This rapid drying process eliminates the harmful thermal stress on the electrode material while still achieving complete moisture removal, thus preserving electrode integrity.
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 direct heating and drying process significantly reduces the time required to remove moisture from the electrode, enhancing productivity and allowing for more efficient manufacturing of secondary batteries by stabilizing the electrode and improving the drying rate.
Implementation Method 1
a heating member that directly heats and dries a surface of the electrode that passes through the drying space to remove moisture from the electrode
Data Source
AI summary
The present invention relates to an electrode heating device that dries an electrode. The electrode heating device comprises a heating body having a drying space through which the electrode passes, and a heating member that directly heats and dries a surface of the electrode that passes through the drying space to remove moisture from the electrode.