Electrolyte Membrane Roll Body With Peelable Lead Film
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Solution Overview
Problem
In the manufacturing of membrane electrode assemblies, the direct connection of the electrolyte membrane roll core to the electrolyte membrane and its supporting base limits the effective transfer of catalyst layers, leading to unusable portions and issues with peeling the electrolyte membrane supporting base from the lead film, which hinders the continued conveyance of the product.
Innovation Solution
An electrolyte membrane roll body is designed with a lead film and a lead film supporting base connected to the roll core, allowing the electrolyte membrane and its supporting base to be rolled together, with the lead film supporting base peelable from the lead film, enabling the effective use of the electrolyte membrane within the manufacturing apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electrolyte membrane and its supporting base are directly connected to the roll core, then the structure is simple, but the catalyst layers cannot be sequentially transferred onto all of the electrolyte membrane and unusable portions are produced
Solution Approach 1:
A lead film is introduced as an intermediary component between the roll core and the electrolyte membrane. The lead film is connected to the roll core, and the electrolyte membrane is connected to the lead film, enabling the electrolyte membrane to be unrolled and processed without direct contact with the roll core. This intermediary structure allows catalyst layers to be transferred onto the entire electrolyte membrane surface including areas near the roll end.
2Device complexity
If a single-layer lead film is used connected to the roll core, then the structure is simple, but the electrolyte membrane supporting base cannot be peeled at the connecting portion and product conveyance stops
Solution Approach 1:
The lead film structure is segmented into multiple layers: a first lead film layer connected to the roll core, and a second lead film layer connected to the electrolyte membrane. This segmentation allows the electrolyte membrane supporting base to be peeled from the lead film at the connection portion, enabling continuous product conveyance and preventing the peeling process from stopping.
Data Source
AI summary
An electrolyte membrane roll body to be used in a manufacturing apparatus for membrane electrode assemblies allows effective use of an electrolyte membrane in the manufacturing apparatus. A first end of a lead film and a first end of a lead film supporting base that is peelably bonded to the lead film are connected to a roll core around which an electrolyte membrane sheet and a back sheet for supporting the electrolyte membrane sheet are rolled. A terminal end of the electrolyte membrane sheet and a terminal end of the back sheet are connected to a second end of the lead film and a second end of the lead film supporting base, respectively.