Plate unit for e.g. current collector plate of polymer electrolyte membrane fuel cell, has channel structure with channels, where each channel has inner geometry with different characteristic values for different channel sections

摘要

The unit (1) has a channel structure with channels (2) that run parallel to each other and have flow cross sections. Each channel has an inner geometry with different characteristic values for different channel sections. The inner geometry passes to respective flow cross section. One of the characteristic values represents a ratio of truncation of one channel cross section to width of the channel section. An independent claim is also included for a method for manufacturing a plate unit.