Electrode Rolling Heating Non-Coated Portion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The elongation difference between coated and non-coated portions of an electrode during the rolling process leads to bending issues, affecting the performance and lifespan of secondary batteries.
Innovation Solution
An electrode rolling apparatus equipped with a sensing unit to identify non-coated regions and a heating unit that selectively heats these areas to minimize elongation differences, ensuring uniform elongation across the electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electrode is subjected to rolling process without heating the non-coated portion, then the rolling process is simple and fast, but the coated portion and non-coated portion have different elongations causing the electrode to bend
Solution Approach 1:
The heating unit heats the non-coated portion of the electrode before the rolling process to pre-compensate for the elongation difference that will occur during rolling. This preliminary thermal treatment ensures that when rolling occurs, both the coated and non-coated portions elongate uniformly, preventing bending of the electrode.
Solution Approach 2:
The heating unit is configured to heat only the non-coated portion of the electrode selectively, while leaving the coated portion unheated. This localized heating approach creates a differential thermal state that compensates for the upcoming rolling-induced elongation difference, ensuring uniform overall elongation without requiring the entire electrode to be heated.
2Manufacturing precision
If the entire electrode is heated before rolling, then uniform elongation is achieved, but energy consumption increases and processing time extends
Solution Approach 1:
The heating unit is configured to heat only the non-coated portion of the electrode selectively, while leaving the coated portion unheated. This localized heating approach creates a differential thermal state that compensates for the upcoming rolling-induced elongation difference, ensuring uniform overall elongation without requiring the entire electrode to be heated.
Solution Approach 2:
Instead of heating the entire electrode, the system applies heating only to the extent necessary (the non-coated portion) to achieve the desired uniform elongation effect. This partial action approach minimizes energy consumption while still achieving the primary objective of preventing electrode bending during rolling.
3Manufacturing precision
If the non-coated portion is selectively heated, then uniform elongation is achieved with reduced energy consumption, but the apparatus requires additional heating and sensing components
Solution Approach 1:
The heating unit heats the non-coated portion of the electrode before the rolling process to pre-compensate for the elongation difference that will occur during rolling. This preliminary thermal treatment ensures that when rolling occurs, both the coated and non-coated portions elongate uniformly, preventing bending of the electrode.
Solution Approach 2:
The heating unit is configured to heat only the non-coated portion of the electrode selectively, while leaving the coated portion unheated. This localized heating approach creates a differential thermal state that compensates for the upcoming rolling-induced elongation difference, ensuring uniform overall elongation without requiring the entire electrode to be heated.
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
This approach prevents electrode bending, enhances the quality and performance of secondary batteries by maintaining uniform elongation, allowing for the production of various electrode sizes with improved productivity.
Implementation Method 1
a heating unit positioned above the electrode to selectively heat only the region in which the non-coated portion is formed
Data Source
AI summary
An electrode rolling apparatus according to an embodiment of the present disclosure includes a sensing unit positioned above an electrode for a secondary battery being transferred along a lengthwise direction to measure a distance to the electrode for each location along a widthwise direction of the electrode, a control unit which identifies a location of a non-coated portion formed on the electrode using information associated with the distance between the sensing unit and the electrode measured through the sensing unit, and outputs a control signal to heat a region in which the identified non-coated portion is formed, a heating unit positioned above the electrode to selectively heat only the region in which the non-coated portion is formed according to the control signal of the control unit, and a rolling unit which rolls the electrode having the selectively heated region in which the non-coated portion is formed.