Electrode Dryness Testing via Bifurcated Optical Fiber Calibration
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Solution Overview
Problem
Conventional electrode dryness testing devices require stopping the drying process to measure reflectance, posing safety risks and inefficiencies due to the limited lifetime and performance degradation of light sources and spectrometers.
Innovation Solution
A device and method that allows for real-time reflectance measurement of a standard sample outside the drying oven using a bifurcated optical fiber to irradiate light to both the electrode substrate and a standard sample, with a control unit correcting the light source and spectrometer based on analysis results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drying process is stopped to measure reflectance of the standard sample, then the light source and spectrometer can be corrected, but productivity decreases and safety risks increase
Solution Approach 1:
The optical fiber is divided into two separate fibers: one dedicated to measuring the electrode substrate and another dedicated to measuring the standard sample. This segmentation allows simultaneous independent measurement of both the electrode during drying and the standard sample for calibration, eliminating the need to stop the drying process for correction work.
Solution Approach 2:
A beam splitter is introduced as an intermediary component that divides the light from a single light source into two separate light paths. This allows the system to illuminate both the electrode substrate and the standard sample simultaneously using one light source, enabling continuous monitoring without interrupting the drying process.
2Reliability
If a person directly enters the high-temperature drying oven to measure the standard sample, then correction can be performed, but safety risks increase
Solution Approach 1:
The system uses automated optical measurement to perform calibration without human intervention. The second optical fiber continuously measures the standard sample inside the drying oven, and the control unit automatically processes the measurement data to correct the light source and spectrometer, eliminating the need for operators to enter the high-temperature environment.
Solution Approach 2:
Manual measurement operations are replaced with an automated optical measurement system. The spectrometer and control unit automatically perform the calibration functions that previously required human operators to physically access the drying oven, substituting mechanical/human operations with automated instrumentation.
3Productivity
If the light source and spectrometer are used continuously without correction, then productivity is maintained, but measurement precision deteriorates over time
Solution Approach 1:
The system implements continuous feedback measurement by continuously monitoring the standard sample through the second optical fiber. The control unit compares the measured values against reference standards and automatically adjusts the light source intensity and spectrometer calibration parameters in real-time, maintaining measurement precision without interrupting production.
Solution Approach 2:
The calibration function is made continuous rather than periodic. While the drying process continues uninterrupted, the system continuously measures the standard sample and continuously adjusts the measurement parameters, ensuring that calibration is an ongoing process that maintains accuracy throughout operation rather than a periodic interruption.
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
Enables in-line checking and calibration of electrode dryness without interrupting the drying process, ensuring reliable and safe reflectance measurement.
Implementation Method 1
a light emitting unit that includes a light source and a bifurcated optical fiber connected to the light source, and selectively irradiates light to any one of the electrode substrate and the standard sample
Implementation Method 2
a spectrometer that selectively receives light reflected from any one of the electrode substrate and the standard sample and analyzes the reflected light
Data Source
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AI summary
A device for testing the dryness of an electrode according to the present disclosure comprises: an electrode substrate in which an electrode slurry is applied onto a collector, a standard sample, a light emitting unit that includes a light source and a bifurcated optical fiber connected to the light source, and selectively irradiates light to any one of the electrode substrate and the standard sample through one optical fiber of the bifurcated optical fiber, a light receiving unit that includes a spectrometer that selectively receives light reflected from any one of the electrode substrate and the standard sample and analyzes the reflected light, and a control unit that corrects at least one of the light source and the spectrometer based on the analysis results of the spectrometer.