Fuel Stack Assembly Using Standard Plates and Variable Membranes
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Solution Overview
Problem
The existing manufacturing process for hydrogen fuel stacks is complex and costly due to the need for designing and producing multiple types of plates with specific shapes and dimensions to achieve different power outputs, leading to inefficiencies and high production costs.
Innovation Solution
A method involving the use of plates with a single format and multiple membrane formats of varying dimensions, allowing the assembly of fuel stacks with different power outputs by varying the membrane format, thereby reducing the need for multiple plate designs and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of plates with specific shapes and dimensions are designed and produced to achieve different power outputs, then the power output adaptability is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent applies universality by designing a single standardized plate format that can be used across multiple fuel stack configurations. This universal plate design incorporates standardized channel patterns and dimensions that work with different membrane formats (e.g., 50mm, 100mm, 150mm diameters) to achieve various power outputs, eliminating the need for multiple specialized plate designs and reducing manufacturing complexity
2Adaptability or versatility
If multiple types of plates with specific shapes and dimensions are designed and produced to achieve different power outputs, then the power output adaptability is improved, but the manufacturing costs increase
Solution Approach 1:
The universal plate design enables a single mold or manufacturing process to produce plates for all power output configurations, significantly reducing tooling costs and manufacturing complexity. The standardized plate format with adaptable channel configurations allows one manufacturing line to serve multiple product variants
Solution Approach 2:
The patent utilizes parameter changes by modifying the membrane diameter parameter (50mm, 100mm, 150mm) while keeping the plate format standardized. This approach allows different power outputs to be achieved through parameter variation rather than redesigning the entire plate structure, simplifying the manufacturing process and reducing costs
3Device complexity
If standardized plates with varying membrane formats are used to produce different power outputs, then the manufacturing complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by incorporating specific localization features on the standardized plates, such as positioning ribs, grooves, or marked zones that indicate where membranes of different formats should be placed. These localized features guide precise membrane positioning during assembly, ensuring proper alignment and sealing without requiring complex overall plate redesigns
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 the production of multiple types of fuel stacks with different power outputs using identical plates and membranes, reducing complexity and costs while ensuring efficient gas and heat transfer, improving thermal convection, rigidity, and electric contact, and facilitating assembly.
Implementation Method 1
a proton-exchange membrane inserted between two neighbouring plates
Implementation Method 2
produces electric energy via a chemical reaction between dihydrogen (H2) and dioxygen (O2)
Implementation Method 3
The design of the mechanical parts must therefore be adapted to be supplied with coolant, or heat transfer fluid
Data Source
AI summary
The invention relates to a method for manufacturing several types of fuel cells, having different power outputs according to the types of cells, the cells having a stack of plates each comprising first channels for the circulation of reactive gases, dihydrogen and air respectively, and second channels for the circulation of a heat-transfer fluid, a proton-exchange membrane being inserted between two adjacent plates, according to which method:plates of a single format are obtained;at least two types of membrane are obtained, having at least two membrane formats each having different dimensions;the plates are assembled with a first one of said membrane formats, so as to produce a first type of fuel cell, having a first power output;the plates are assembled with a second one of said membrane formats, so as to produce a second type of fuel cell, having a second power output,so as to have several types of cells, having different power outputs, from identical plates and membranes specific to each type of cell, each cell of a given type of cell using membranes of the same formats, intended for said type of cell.