Diffusion Layer Inspection and Punching for Water Electrolysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In polymer electrolyte membrane water electrolysis systems, the porous transport layer with a titanium material faces challenges in quality control due to non-uniform pore sizes and porosity, which affects performance and is difficult to inspect efficiently using existing methods like microscopes or scanning electron microscopes, leading to defective products and increased costs.
Innovation Solution
An apparatus and method for inspecting the thickness, porosity, and pore uniformity of the diffusion layer, using radiation devices, weight measurement, and light-based inspection to determine if the layer meets predetermined design ranges, and a cutting machine that punches the layer based on these inspections to ensure uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical microscope or SEM equipment is used to inspect PTL quality, then measurement precision is improved, but productivity deteriorates due to considerable time and cost requirements
Solution Approach 1:
The patent replaces mechanical/optical inspection systems (microscopes, SEM) with a light-based inspection system that uses light sources and sensors to measure pore characteristics. This substitution enables non-contact, high-speed inspection while maintaining measurement precision, thereby resolving the contradiction between measurement precision and productivity
Solution Approach 2:
The patent changes the inspection parameter from visual/optical microscopy to light transmission and absorption measurements. By measuring how light passes through or is absorbed by the PTL, the system can quickly assess pore size and distribution without the time-consuming processes of optical microscopy or SEM, thus improving productivity while maintaining measurement accuracy
2Measurement precision
If manual inspection methods are used, then measurement precision is improved, but loss of time increases due to considerable inspection time required
Solution Approach 1:
The patent replaces manual optical inspection with an automated light-based measurement system that quickly captures pore characteristics through light transmission and absorption. This automation eliminates the time-consuming nature of manual microscopy while maintaining measurement precision, effectively reducing inspection time
Solution Approach 2:
The inspection system operates continuously by constantly emitting light and measuring its interaction with the PTL as it passes through the apparatus. This continuous measurement process eliminates the start-stop nature of manual inspection, maintaining high measurement precision while significantly reducing total inspection time
3Ease of manufacture
If non-uniform slurry mixing or temperature deviation occurs during manufacturing, then manufacturing precision deteriorates, but ease of manufacture is improved due to simplified process control
Solution Approach 1:
The patent implements a feedback system where the light-based inspection apparatus continuously monitors pore size uniformity and provides real-time quality data. This feedback enables process control adjustments to maintain manufacturing precision even with simplified manufacturing processes, resolving the contradiction between ease of manufacture and manufacturing precision
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 enables efficient and cost-effective inspection and punching of diffusion layers, improving the quality and performance of the PEM water electrolysis system by automating the process and reducing manual labor, thereby stabilizing the quality and durability of the diffusion layer.
Implementation Method 1
a radiation device that radiates visible light or infrared light at a predetermined spacing and an optical receiver that receives the visible light or the infrared light
Implementation Method 2
The second inspector may measure a weight of the diffusion layer for water electrolysis, and calculate a weight of the diffusion layer for water electrolysis based on an area of a weighing surface, the thickness, a density of material of the diffusion layer for water electrolysis
Data Source
AI summary
An apparatus and a method for inspecting and punching a diffusion layer for water electrolysis are provided. The apparatus includes a first inspector that inspects a thickness of a diffusion layer for water electrolysis, a second inspector that inspects porosity of the diffusion layer for water electrolysis, and a cutting machine that inspects pore uniformity of the diffusion layer for water electrolysis and cuts the diffusion layer for water electrolysis based on the result of inspecting at least one of the thickness, the porosity, the pore uniformity, or a combination thereof.