Coolant flow field design for fuel cell stacks

Details Coolant flow field design for fuel cell stacks Coolant flow field design for fuel cell stacks

2005-08-02

2005-08-02

Chaney, Carol (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S120000

Reexamination Certificate

active

06924052

ABSTRACT:
A bipolar plate assembly is provided for use in a fuel cell stack to supply reactants to the anode and cathode sides of fuel cells within the stack. The bipolar plate assembly includes first and second sub-plates, each including a first face surface having a coolant flow field formed therein and a second face surface having a reactant flow field formed therein. The coolant fields of the first and second sub-plates include regions of varying flow volume, having respective flow resistance therebetween. The regions of varying flow volume enable variable cooling across the fuel cell stack, thereby enabling a constant temperature to be achieved across the fuel cell stack.

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Notification of Transmittal Of The International Search Report Or The Declaration, dated Aug. 8, 2003.

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