Non-Coated Foil Heating Control for Electrode Sheet Integrity
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Solution Overview
Problem
Existing methods for heating the non-coated portion of electrode sheets during the rolling process fail to account for differences in elongation rates among various foil types, leading to fractures and deformations.
Innovation Solution
An apparatus with a temperature detection unit and a controller that uses an electromagnetic induction heating coil to adjust the heating temperature based on the detected temperature of the non-coated portion, ensuring appropriate heating for different foil types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heating temperature is controlled based only on rolling roll speed, then the heating process is simple to operate, but appropriate heating temperature cannot be formed for each foil type causing fractures
Solution Approach 1:
The patent changes the control parameter from rolling roll speed alone to a combination of rolling roll speed and foil type characteristics. The controller adjusts heating temperature based on both parameters, allowing different heating temperatures for different foil types (e.g., aluminum foil vs. copper foil) while maintaining simple automated operation through programmable control.
Solution Approach 2:
The patent implements a feedback control system where the controller receives information about foil type and rolling speed, then adjusts the heating temperature accordingly. This closed-loop control ensures appropriate heating for each foil type, preventing fractures while maintaining operational simplicity through automated temperature adjustment.
2Reliability
If heating temperature is increased to prevent fractures, then electrode sheet integrity is improved, but excessive heating may cause other defects and energy waste
Solution Approach 1:
The patent optimizes heating temperature by changing from fixed high temperature to variable temperature based on foil type and rolling speed. The controller calculates the precise heating temperature needed for each situation, ensuring sufficient heating to prevent fractures while avoiding excessive heating that would waste energy and cause defects.
Solution Approach 2:
The patent applies partial heating action by heating only the non-coated portion of the electrode sheet to the required temperature, rather than heating the entire sheet excessively. This targeted approach prevents fractures in the critical non-coated portion while minimizing energy consumption and avoiding overheating of other areas.
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
Prevents fractures and deformations in electrode sheets by controlling the heating temperature according to foil type, maintaining optimal tensile strength during the rolling process.
Implementation Method 1
a heating means spaced apart from the other side of the non-coated portion of foil of the electrode sheet, and configured to heat the non-coated portion of foil under control of the controller
Implementation Method 2
The heating means includes an electromagnetic induction heating coil spaced apart from the other side of the non-coated portion of foil so as to heat the non-coated portion of foil under control of the controller
Implementation Method 3
The temperature detection unit includes an infrared temperature sensor spaced apart from one side of the non-coated portion of foil to detect a temperature of the non-coated portion of foil
Data Source
AI summary
An apparatus for heating a non-coated portion of foil includes a temperature detection unit spaced apart from one side of a non-coated portion of foil of an electrode sheet, configured to detect a temperature of the non-coated portion of foil in a non-contact manner and configured to output a temperature detection signal; a controller configured to control heating of the non-coated portion of foil based on a temperature detection signal from the temperature detection unit; and a heating means spaced apart from the other side of the non-coated portion of foil of the electrode sheet, and configured to heat the non-coated portion of foil under control of the controller.