Fuel Cell Membrane Electrode Assembly Alignment via Bonding Roll Feedback

The patent applies preliminary action by pre-coating the catalyst electrode layers on the electrode films before the lamination process. The electrode films are prepared with catalyst layers in advance, and alignment marks are pre-established on the electrode films and electrolyte membrane. This preliminary preparation enables the continuous roll lamination process to maintain both high speed and precise alignment, as the materials are already configured for optimal positioning before entering the bonding rolls.

The patent implements feedback control by using sensors to detect the positions of alignment marks on the electrode films and electrolyte membrane during the roll lamination process. The system continuously monitors the feeding speeds and positions of the materials, and automatically adjusts the rotation speeds of the bonding rolls to maintain precise alignment. This closed-loop feedback mechanism enables continuous mass production while maintaining accurate lamination positioning despite variations in feeding speeds.

The patent applies segmentation by separating the alignment control function from the bonding function. The alignment marks are distinctly segmented and positioned on the electrode films and electrolyte membrane, allowing independent detection and adjustment of alignment before the materials enter the high temperature and high pressure bonding rolls. This segmentation enables the bonding rolls to focus on providing strong bonding while the alignment system independently manages positioning accuracy.