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1. WO1996012316 - FUEL CELLS EMPLOYING INTEGRATED FLUID MANAGEMENT PLATELET TECHNOLOGY

Publication Number WO/1996/012316
Publication Date 25.04.1996
International Application No. PCT/US1995/013325
International Filing Date 10.10.1995
Chapter 2 Demand Filed 13.05.1996
IPC
F28D 9/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
9Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
3Plate-like or laminated elements; Assemblies of plate-like or laminated elements
02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
04the means being integral with the element
H01M 8/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
H01M 8/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
H01M 8/24 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
24Grouping of fuel cells, e.g. stacking of fuel cells
CPC
F28D 9/0075
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
9Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
0062the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
0075the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
F28F 2250/102
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
2250Arrangements for modifying the flow of the heat exchange media
10Particular pattern of flow of the heat exchange media
102with change of flow direction
F28F 2260/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
2260Heat exchangers or heat exchange elements having special size, e.g. microstructures
02having microchannels
F28F 3/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
3Plate-like or laminated elements; Assemblies of plate-like or laminated elements
02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
04the means being integral with the element
F28F 3/048
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
3Plate-like or laminated elements; Assemblies of plate-like or laminated elements
02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
04the means being integral with the element
048in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
H01M 2300/0082
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2300Electrolytes
0017Non-aqueous electrolytes
0065Solid electrolytes
0082Organic polymers
Applicants
  • H POWER CORPORATION [US]/[US] (AllExceptUS)
  • SPEAR, Reginald, G., Jr. [US]/[US] (UsOnly)
  • MUEGGENBURG, H., Harry [US]/[US] (UsOnly)
  • HODGE, Rex [US]/[US] (UsOnly)
Inventors
  • SPEAR, Reginald, G., Jr.
  • MUEGGENBURG, H., Harry
  • HODGE, Rex
Agents
  • DULIN, Jacques,M
Priority Data
08/322,82312.10.1994US
08/443,13917.05.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FUEL CELLS EMPLOYING INTEGRATED FLUID MANAGEMENT PLATELET TECHNOLOGY
(FR) PILES A COMBUSTIBLE DANS LESQUELLES ON APPLIQUE LA TECHNOLOGIE DES PLAQUETTES SERVANT A LA GESTION INTEGREE DU FLUIDE
Abstract
(EN)
Fuel cell stacks (1) comprising stacked separator/membrane, electrode assembly cells in which the separators comprise a series of stacked thin sheet platelets (30-1 and 30-7) having individually configured serpentine micro-channel reactant gas humidification (35, 40), active area (25) and cooling fields therein. The individual platelets are stacked with coordinate features precisely aligned in contact with adjacent platelets and bonded to form a monolithic separator. Post bonding processing includes passivation, such as nitriding. Preferred platelet material is 4-25 mil Ti in which the features, serpentine channels (52), tabs, lands (54), vias (61, 63, 65), manifolds and holes, are formed by chemical or laser etching, cutting, pressing or embossing, with combinations of depth and through-etching being preferred. The platelet manufacturing process is continuous and fast. By employing CAD based platelet design and photolithography, rapid change in feature design can accommodate a wide range of thermal management and humidification techniques. 100 cell H2-O2/Air PEM fuel cell stacks of this IFMT platelet design will exhibit outputs on the order of .75 kW/kg, some 3-6 times greater than current graphite plate PEM stacks.
(FR)
L'invention concerne des empilements (1) de piles à combustible comprenant des piles empilées constituées d'un ensemble séparateur/membrane et électrode, dans lesquels les séparateurs comprennent une série de plaquettes (30-1 et 30-7) en tôle mince, dans lesquelles sont formés, individuellement, des champs à microcanaux en serpentins formant des zones d'humidification par gaz réactif (35, 40), une zone active (25) et une zone de refroidissement. Les plaquettes individuelles sont empilées, de façon que les motifs correspondant à un système de coordonnées soit aligné avec précision, mises en contact avec les plaquettes adjacentes et liées pour former un séparateur monolitique. Le traitement effectué après la liaison des plaquettes comprend une passivation, par exemple une nitruration. Le matériau préféré utilisé pour réaliser des plaquettes est du Ti de 4-25 millièmes de pouce, dans lequel les motifs, les canaux à serpentin (52), les pattes, les sillons (54), les traversées (61, 63, 65), les collecteurs et les trous sont formés par attaque chimique ou attaque au laser, découpage, passage à la presse ou emboutissage, la technique préférée consistant à combiner l'attaque en profondeur et l'attaque traversante. Le procédé de production des plaquettes est un procédé continu et rapide. La conception des plaquettes assistée par ordinateur et la photolithographie permettent d'obtenir un changement rapide de la conception des motifs et ainsi une adaptation à une grande gamme de techniques de gestion thermique et d'humidification. Des empilements de piles à combustible à membranes échangeuses de protons, comprenant 100 piles utilisant un mélange H2-O2/air comme combustible et comprenant des plaquettes servant à la gestion intégrée du fluide ont une puissance de l'ordre de 0,75 kw/kg, c'est-à-dire de 3 à 6 fois plus grande que celle des empilements à membranes échangeuses de protons et à plaques de graphite utilisés habituellement.
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