Electrode Reference-Point Tracking for Accurate Roll Loss Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the electrode process for manufacturing lithium secondary batteries, the manual measurement of electrode loss by operators is inaccurate, leading to incorrect position coordinates on roll maps and affecting subsequent processing and quality analysis.
Innovation Solution
An electrode loss measuring apparatus and method that uses reference points marked on the electrode to automatically calculate the loss amount by comparing the position values of detected reference points with set reference points, ensuring accurate measurement and reflection on roll maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement of electrode loss by operators is used, then the measurement process is simple, but the measurement precision is poor
Solution Approach 1:
A reference point is introduced as an intermediary element on the electrode to enable automated detection. The reference point serves as a mediator between the electrode and the detection system, allowing the electrode loss measuring apparatus to accurately determine electrode position and calculate loss without direct manual measurement, thereby improving precision while maintaining reasonable system complexity
Solution Approach 2:
The patent replaces the manual mechanical measurement system with an automated optical/electronic detection system. The reference point detector automatically detects the reference point position, and the position measurer calculates electrode position based on rotation amounts, substituting operator manual measurement with automated detection and calculation mechanisms
2Measurement precision
If automated reference point detection is implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The measurement system is segmented into distinct functional modules: reference point marking unit, reference point detector, position measurer, and calculator. Each module performs a specific function, making the overall complex system manageable through modular design. The reference point itself segments the electrode into measurable sections for accurate position tracking
Solution Approach 2:
The reference point serves multiple functions: it marks electrode position, enables detection by the reference point detector, provides reference for position calculation, and facilitates loss measurement. This multi-functionality reduces the need for separate systems for each measurement task, thereby limiting the increase in device complexity
3Reliability
If manual measurement methods are used, then the ease of operation is high, but the reliability of measurement data is poor
Solution Approach 1:
The electrode loss measuring apparatus performs self-service through automated detection and calculation. The reference point detector automatically detects reference points, the position measurer automatically calculates electrode position based on unwinder/rewinder rotation, and the calculator automatically determines loss amount, eliminating the need for operator intervention in the measurement process itself while ensuring consistent, reliable data
Solution Approach 2:
The system implements feedback through the reference point detection mechanism. The reference point detector continuously monitors the electrode position, and the calculated position information feeds back to update the roll map and guide subsequent processing, ensuring that the most accurate and current loss data is used for decision-making
Data Source
AI summary
An electrode loss measuring apparatus includes an electrode which moves in a roll-to-roll state between an unwinder and a rewinder and on which a plurality of reference points are marked at predetermined intervals. The apparatus further includes a reference point detector configured to detect the reference points marked on the electrode, a position measurer configured to derive a position value of the electrode according to a rotation amount of the unwinder or the rewinder and a position value of the corresponding reference point in conjunction with the reference point detector when the reference point detector detects the reference point, and a calculator configured to calculate a loss amount of the electrode by comparing the derived position value of the reference point with a position value of a set reference point when an interval between the reference points is changed due to a loss of a portion of the electrode.