Bipolar plate having offsets
US7270909B2 · kind B2 · utility
2Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2005 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Sep 2, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bipolar plate for a PEM fuel cell is disclosed. The plate includes a plurality of channels, wherein the ends of the channels are staggered. The plate also includes a plurality of tunnels, wherein the ends of the tunnels are staggered. The plate further includes a cathode and an anode, wherein a portion of the cathode overhangs a portion of the anode. These staggered/offset features allow for an increase the capillary meniscus of water droplets passing therethrough, allowing for a reduction in the pressure required to move the water through the cell and out to the header volume of the stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.