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Laminated fuel cell and its maintaining method

A fuel cell, stacked technology, used in fuel cells, fuel cell additives, fuel cell grouping, etc., can solve the problems of dead space, large size, etc.

Inactive Publication Date: 2004-08-04
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the size of the whole structure is so large that it is prone to dead zone

Method used

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  • Laminated fuel cell and its maintaining method
  • Laminated fuel cell and its maintaining method
  • Laminated fuel cell and its maintaining method

Examples

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Effect test

no. 1 example

[0025] will now refer to Figures 1 to 4a , 4b describe the first embodiment of the stacked fuel cell of the present invention and its maintenance method. figure 1 A schematic diagram of a stacked fuel cell. Figure 2a and 2b yes figure 1 local enlargement. image 3 It is an explanatory diagram of a method for maintaining a stacked fuel cell. Figure 4a and 4b yes image 3 A partial enlargement of the .

[0026] Such as Figure 1 to Figure 4a As shown in and 4b, the stacked fuel cell of the present invention includes a plurality of cell membranes 11 and a plurality of separators 12 stacked alternately. The cell membranes 11 each comprise a solid polymer electrolyte membrane sandwiched between electrode membranes made of graphite, while the separators 12 are conductive graphite separators and each have a fuel gas passage formed on one surface thereof, and Oxidant gas channels formed on the other surface. In the stacked fuel cell, a plurality of separator plates 18 a...

no. 2 example

[0037] will now refer to Figure 5 and 6 A second embodiment of the stacked fuel cell and its maintenance method of the present invention will be described. Figure 5 is a schematic diagram of the structure of a stacked fuel cell, Figure 6 yes Figure 5 A partial enlargement of the . For the same parts as in the first embodiment described above, the same explanations as in the first embodiment will be omitted by using the same symbols as in the contents of the explanation in the first embodiment.

[0038] Such as Figure 5 and 6 As shown, the stacked fuel cell of this embodiment includes a plurality of cell membranes 11 and a plurality of separators 12 stacked alternately. In the stacked fuel cell, a plurality of separator plates 28 are inserted at predetermined intervals in the stacking direction. The separator plates 28 each have a conductive graphite terminal plate 26 having a groove 26a forming a penetration through which the fastening member 19 passes in a directi...

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Abstract

A stacked fuel cell comprises a plurality of cell films and a plurality of separators stacked alternately. The cell films each comprise a solid polymer electrolyte film sandwiched between electrode films made of graphite, while the separators are electrically conductive graphite separators each having a fuel gas channel formed in one surface thereof, and an oxidant gas channel formed in the other surface thereof. In the stacked fuel cell, a plurality of partition plates are interposed with predetermined spacing in the direction of stacking. The partition plates each have an electrically conductive graphite terminal board having a groove formed as a piercing portion, through which a band-shaped fastener made of resin (for example, polypropylene) is passed in a direction perpendicular to the direction of stacking, and an electrically conductive graphite end separator having a gas channel formed in a surface thereof in contact with the cell film.

Description

technical field [0001] The invention relates to a stacked fuel cell and its maintenance method. Background technique [0002] Stacked fuel cells have such Figure 9 The shown structure includes a plurality of battery films 111 and a plurality of separators 112 stacked alternately. The battery films 111 respectively include a solid polymer electrolyte film sandwiched between electrode films, and the separators 112 are all conductive and have A fuel gas passage is formed on one surface thereof and an oxidant gas passage is formed on the other surface thereof; and the outer periphery of the formed stack is clamped by the threaded shaft 115a and the nut 115b through the end plate 114 . This stacked fuel cell is designed such that a fuel gas such as hydrogen and an oxidant gas such as air are supplied through manifolds formed on the end plate 114 and the separator 112, and when these gases are supplied, the fuel gas passes through the separator 112 one by one. The fuel gas chann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00H01M8/02H01M8/04H01M8/10H01M8/24
CPCH01M8/247H01M2008/1095H01M8/249H01M8/0247Y02E60/50
Inventor 小林敏郎森贺卓也伊藤荣基梶原友幸山田保
Owner MITSUBISHI HEAVY IND LTD
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