Fuel Cell Cell Stacking via In-Line Separation and Ejection
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Solution Overview
Problem
Existing methods for producing stacked arrangements of individual cells for fuel cell or electrolyzer stacks are inefficient and time-consuming, requiring the manufacturing and stacking of numerous cells in large quantities.
Innovation Solution
A method and device that integrate a plate arrangement with unseparated plate sections for bipolar plates and membrane material, utilizing a separating device to separate individual cells with an ejection movement, allowing simultaneous production and direct transfer into stacked arrangements, optimizing the production cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods are used to produce stacked arrangements of individual cells, then manufacturing precision and reliability can be maintained, but production time increases and productivity decreases
Solution Approach 1:
The bipolar plate is divided into multiple unseparated plate sections that remain connected during handling but are separated during the stacking process. This allows parallel processing of multiple cells simultaneously while maintaining manufacturing precision through the integrated structure during production.
Solution Approach 2:
Multiple bipolar plate sections are pre-assembled into a plate arrangement with unseparated sections before the stacking process. This preliminary assembly enables subsequent rapid separation and stacking operations, significantly reducing production time while maintaining precision through pre-established alignment features.
2Productivity
If individual cells are manufactured and stacked separately, then manufacturing precision can be maintained, but the production process becomes time-consuming and complex
Solution Approach 1:
Multiple bipolar plate sections are merged into a single plate arrangement with unseparated sections, allowing simultaneous handling and processing of what would otherwise be multiple separate components. This merging simplifies the production process by reducing the number of discrete assembly steps while maintaining the ability to produce multiple cells in parallel.
Solution Approach 2:
The plate arrangement with unseparated plate sections serves multiple functions: it acts as structural support during handling, enables parallel production of multiple cells, and facilitates rapid separation during stacking. This multi-functionality reduces overall process complexity while improving productivity.
3Quantity of substance
If large quantities of individual cells are manufactured separately, then sufficient components for stacks can be produced, but time consumption and production costs increase
Solution Approach 1:
The plate arrangement enables continuous production by maintaining unseparated plate sections throughout the manufacturing and stacking process. Multiple cells can be produced in parallel from a single plate arrangement, allowing continuous output without the need to manufacture and handle each cell separately, thus reducing total production time while increasing quantity.
Data Source
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AI summary
The invention relates to a method and a device for producing a stacked arrangement of individual cells for fuel cell or electrolyzer stacks. The method provides the following: providing a plate arrangement (10) with an unseparated plate section for a bipolar plate of an individual cell, wherein layers (4, 8) of at least one plate material are joined to one another in a materially bonded manner in the plate arrangement (10); providing a membrane material (18) in a membrane-electrolyte arrangement for a membrane of the individual cell; forming a stack (17) with the plate arrangement (10) and the membrane material (18) such that the unseparated plate section overlaps the membrane material (18) in the membrane-electrolyte arrangement; feeding the stack (17) to a separating device (16);by separating the stack (17) in the separating device (16), producing a first individual cell with the unseparated plate section forming a first bipolar plate and a section of the membrane material (18) forming a first membrane-electrolyte arrangement, such that for the first individual cell, the unseparated plate section is separated from the stack (17) together with the associated section of the membrane material (18); and arranging the first individual cell in a first stacked arrangement (1.1) for a first fuel cell or electrolyzer stack, wherein the first individual cell is arranged in the first stacked arrangement (1.1) by means of an ejection movement acted upon by the separating device (16) during the separation of the stack (17);