Membrane-Electrode Unit Bonding Through Recessed Adhesive Paths

The patent introduces an adhesive as an intermediary substance between the frame structure and the bipolar plate/diffusion layer. This adhesive layer mediates the connection, eliminating the need for complex ultrasonic welding equipment or laser systems while achieving sufficient connection strength. The adhesive simplifies the manufacturing process by replacing sophisticated joining technologies with a straightforward bonding approach.

The patent extracts the connection function from complex welding processes and concentrates it into a minimal adhesive application. By taking out only the essential bonding function and implementing it through a thin adhesive layer applied precisely at contact areas, the solution achieves reliable connections while minimizing material consumption and waste compared to traditional welding methods that require additional materials and generate more waste.

The patent replaces mechanical welding systems (ultrasonic or laser-based) with a chemical bonding system using adhesive. This substitution eliminates the need for complex mechanical welding equipment and lengthy welding processes, reducing manufacturing time and cost while maintaining connection durability through proper adhesive selection and application. The adhesive bonding process is simpler, faster, and more cost-effective than conventional welding methods.