Fuel Cell Stacking via Web Substrate Unwinding
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Solution Overview
Problem
The current pick-and-place method for fuel cell stack assembly is logistically and cost-intensive, with high risk of component damage due to multiple handling steps, and requires individual component feeding from storage containers, leading to inefficiencies in production time and process speed.
Innovation Solution
A method and device for producing a layer arrangement of fuel cell stack elements using web-shaped substrates that are unwound and separated into individual components, which are then stacked alternately in a continuous process, reducing handling and logistical complexities by using a system with unwinding, separating, and stacking devices to form a fuel cell stack efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual components are fed from storage containers using pick-and-place method, then stacking can be performed, but production time increases and clock frequency decreases
Solution Approach 1:
The patent implements continuous feeding of cell stack elements through a magazine system that supplies components without interruption to the stacking device, eliminating the stop-start nature of individual component retrieval and enabling continuous stacking operation
Solution Approach 2:
Cell stack elements are pre-loaded into magazines in advance of the stacking process, allowing the stacking device to operate continuously without waiting for component preparation or retrieval during the stacking operation
2Ease of operation
If multiple handling steps are used for loading and unloading storage containers, then components can be transported, but risk of component damage increases
Solution Approach 1:
The patent combines the storage container and feeding mechanism into an integrated magazine system that is directly coupled to the stacking device, eliminating separate handling steps for loading and unloading and reducing the number of times components are picked and placed
Solution Approach 2:
The magazine acts as an intermediary buffer between component storage and the stacking device, allowing components to be fed continuously without requiring direct manual or robotic handling for loading and unloading operations
3Productivity
If individual components are fed from magazines, then stacking can be performed, but logistical effort and costs increase enormously
Solution Approach 1:
The magazine system is designed to accommodate multiple cell stack elements of the same type in a single storage unit, allowing one magazine to serve multiple stacking positions or multiple magazines to serve different element types, reducing the total number of individual handling units required
Solution Approach 2:
The patent transitions from horizontal/linear feeding arrangements to vertical stacking with magazines positioned above the stacking device, allowing gravity-assisted feeding and reducing the footprint of the overall system while maintaining high productivity
Data Source
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AI summary
The invention relates to a method for producing a layered arrangement for a fuel cell cell stack comprising at least one first cell stack element (12) and at least one second cell stack element (14). In the method, a web-shaped first cell stack element substrate (16) is provided. The web-shaped cell stack element substrate (16) is then conveyed to a stacking device (26), and individual first cell stack elements (12) are separated from the cell stack element substrate (16) upon introduction into the stacking device (26). In a further process step, individual second cell stack elements (14) are provided at the stacking device (26). Finally, individual first cell stack elements (12) and second cell stack elements (14) are stacked on top of each other in the stacking device (26).