Fuel Cell Gas Distribution via Auxiliary Flow Passages

The flow passage is divided into multiple independent channels (first flow passage, second flow passage, third flow passage) that distribute gas to different regions of the power generation cell. Each flow passage receives gas from different flow-in ports and delivers to different flow-out ports, segmenting the flow distribution to achieve both comprehensive coverage and uniform flow rates across the cell surface.

Different flow passages are designed with different configurations to suit local requirements. The first flow passage connects first flow-in ports to first flow-out ports, the second flow passage connects second flow-in ports to second flow-out ports, and the third flow passage connects third flow-in ports to third flow-out ports. This local differentiation allows each region to receive optimized gas supply, achieving uniform flow distribution while maintaining comprehensive surface coverage.

The flow passage configuration aims to create equipotential conditions for pressure distribution. By symmetrically arranging flow-in ports and flow-out ports on opposite surfaces and creating multiple flow passages with similar path lengths and resistance characteristics, the system balances pressure distribution across all flow passages, reducing pressure loss variation and energy waste.

While maintaining overall symmetry for balance, the design incorporates asymmetric elements in the flow passage routing to compensate for natural flow distribution imbalances. The specific arrangement of flow passages and ports creates asymmetric flow paths that equalize pressure drops across different regions, achieving uniform pressure loss despite the complex multi-passage configuration.