Induction Coil Electrode Drying to Prevent Overheating and Oxidation
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Solution Overview
Problem
Existing methods for drying electrodes in battery manufacturing require complex facilities, excessive electric current, and result in overheating or oxidation, making them inefficient and prone to defects.
Innovation Solution
A system for drying electrodes that uses a coil disposed along the electrode's movement route, allowing for variable electric current application and simultaneous heating of both the inside and outside of the electrode, thereby simplifying the facility and preventing overheating or oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate induction heating device is used to dry the electrode, then the drying function is achieved, but the facility complexity increases
Solution Approach 1:
The induction heating coil is integrated into the existing electrode winding system, merging the drying function with the winding structure. This eliminates the need for separate induction heating devices while achieving effective drying of the electrode.
2Reliability
If a separate induction heating device is used to dry the electrode, then the drying function is achieved, but the facility size increases
Solution Approach 1:
The induction heating coil is integrated into the existing electrode winding system, merging the drying function with the winding structure. This eliminates the need for separate induction heating devices while achieving effective drying of the electrode.
3Productivity
If excessive electric current is applied to dry the electrode, then the drying speed is improved, but the electrode tab becomes oxidized
Solution Approach 1:
The induction heating coil is positioned to apply heat locally and uniformly to the electrode body without concentrating excessive energy on the electrode tab. This localized heating approach achieves fast drying while preventing oxidation of sensitive components.
Solution Approach 2:
The system monitors the heating process and adjusts the electric current applied to the induction coil in real-time, preventing excessive current that would cause oxidation while maintaining efficient drying speed.
4Temperature
If infrared lamps are used to heat the electrode, then the heating function is achieved, but the facility layout becomes difficult and the facility size increases
Solution Approach 1:
The induction heating coil is integrated into the existing electrode winding system, merging the heating function with the winding structure. This eliminates the need for separate infrared heating lamps and simplifies the facility layout.
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 system simplifies the facility required for electrode drying, reduces the size of the facility, shortens drying time, and prevents overheating or oxidation of the electrode, leading to improved productivity and quality of the electrodes.
Implementation Method 1
The system includes a coil. The coil is disposed along a movement route for an electrode that includes a base layer made of metal and an electrode active material applied onto the base layer. An electric current is applicable to the coil.
Data Source
AI summary
A method of manufacturing an electrode for a battery and a system for drying an electrode are disclosed and the system is used to manufacture an electrode. The system for drying an electrode includes a coil disposed along a movement route for an electrode. The electrode includes a base layer made of metal and an electrode active material applied onto the base layer. An electric current may be applied to the coil.