Lightweight direct methanol fuel cell

Details Lightweight direct methanol fuel cell Lightweight direct methanol fuel cell

2007-03-13

2007-03-13

Ruthkosky, Mark (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S047000

Reexamination Certificate

active

10100672

ABSTRACT:
A lightweight direct methanol fuel cell unit (20) comprising a fuel cell stack (24) enclosed within a housing (22). In one embodiment the fuel cell stack includes a plurality of polymer electrolyte membrane electrode assemblies (52) stacked alternatingly with a plurality of bipolar plates (48). Each bipolar plate includes a cathode flow field (78) defined by a porous cathode flow field structure (56) and an anode flow field (62) defined by an upper plate (58) and a lower plate (60) separated from one another by a plurality of spacers (64). The anode flow fields are manifolded with one another via manifold embossments (118, 120) that are hermetically sealed with one another with a gasket (126). The fuel cell stack and housing are shaped so as to form four manifold regions (36) in the spaces between the fuel cell stack and housing. The fuel cell stack is compressed within the housing by compression members (94) located between the fuel cell stack and housing so as to place the sidewall (30) of the housing into tension. Supporting systems for the fuel cell unit include a fuel handling system (502), an oxidant handling system (600), and a liquid inventory control system (700).

REFERENCES:
patent: 4175165 (1979-11-01), Adlhart
patent: 4810597 (1989-03-01), Kumagai et al.
patent: 4855193 (1989-08-01), McElroy
patent: 5234776 (1993-08-01), Koseki
patent: 5362578 (1994-11-01), Petri et al.
patent: 5376472 (1994-12-01), Hartvigsen et al.
patent: 5503944 (1996-04-01), Meyer et al.
patent: 5514487 (1996-05-01), Washington et al.
patent: 5521018 (1996-05-01), Wilkinson et al.
patent: 5573866 (1996-11-01), Van Dine et al.
patent: 5723228 (1998-03-01), Okamoto
patent: 5766786 (1998-06-01), Fleck et al.
patent: 5928807 (1999-07-01), Elias
patent: 5952118 (1999-09-01), Ledjeff et al.
patent: 5952119 (1999-09-01), Wilson
patent: 5981098 (1999-11-01), Vitale
patent: 6007933 (1999-12-01), Jones
patent: 6015634 (2000-01-01), Bonville, Jr. et al.
patent: 6040076 (2000-03-01), Reeder
patent: 6066408 (2000-05-01), Vitale et al.
patent: 6066409 (2000-05-01), Ronne et al.
patent: 6110613 (2000-08-01), Fuller
patent: 6132895 (2000-10-01), Pratt et al.
patent: 6146781 (2000-11-01), Surampudi et al.
patent: 6159629 (2000-12-01), Gibb et al.
patent: 6232010 (2001-05-01), Cisar et al.
patent: 6254748 (2001-07-01), Surampudi et al.
patent: 6255012 (2001-07-01), Wilson et al.
patent: 6277508 (2001-08-01), Reiser et al.
patent: 6296964 (2001-10-01), Ren et al.
patent: 6303244 (2001-10-01), Surampudi et al.
patent: 6322914 (2001-11-01), Chow et al.
patent: 6329093 (2001-12-01), Ohara et al.
patent: 6350540 (2002-02-01), Sugita et al.
patent: 2001/0028971 (2001-10-01), Matejcek
patent: 2001/0049044 (2001-12-01), Molter
patent: 2002/0001743 (2002-01-01), Davis
patent: 2002/0009630 (2002-01-01), Gao et al.

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