Aligning method for repeating and non-repeating units in a fuel cell stack

摘要

An alignment system and method for assembling a fuel cell stack. Components of the fuel cell stack have internal alignment features and are aligned to a predetermined orientation during assembly. The system and method allow fuel cell stacks to be assembled within high tolerance levels while improving access to each component during assembly. Additionally, the system and method can provide additional rigidity to a fuel cell stack.

主权项

1. A fuel cell stack comprising:
a plurality of fuel cells arranged adjacent one another in a stacked configuration, said fuel cells having internal alignment features that allow components of each fuel cell to be aligned to a predetermined orientation relative to one another with the use of an axially rotated alignment member, wherein each alignment feature includes an engaging surface of an aperture having a shape substantially similar to a cross section shape of said alignment member, and is configured to be selectively engaged and disengaged by an engaging portion of said alignment member when said alignment feature is disposed around said alignment member and said alignment member is axially rotated within said aperture.