Fuel cell manufacturing method and fuel cell
A technology of fuel cells and manufacturing methods, which is applied in the manufacture of fuel cell parts, fuel cells, and final products, and can solve problems such as large dimensional tolerances
Active Publication Date: 2017-12-01
NISSAN MOTOR CO LTD +1
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Problems solved by technology
[0003] However, in the separator unit composed of the anode-side separator and the cathode-side separator, the fuel gas (hydrogen gas) of the anode-side separator and the part of the cooling water flow path and the oxidant gas (oxygen-containing oxygen) of the cathode-side separator Air or pure oxygen), the flow path of cooling water is formed with fine concave and convex shapes, and the dimensional tolerance is also large
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[0025] refer to Figure 1 to Figure 11 , the method of manufacturing the fuel cell 1 and the fuel cell 1 according to the embodiment will be described.
[0026] First, refer to Figure 1 to Figure 5 , the structure of the fuel cell 1 will be described.
[0027] figure 1 It is a perspective view showing the fuel cell 1 of the embodiment. figure 2 It is an exploded perspective view showing a part of the fuel cell 1 disassembled into each structural member. image 3 It is a partial sectional view showing the separator unit 10 , the deformation absorbing member 20 and the membrane electrode assembly 30 of the fuel cell 1 . image 3 along figure 2 The 3-3 lines are shown. Figure 4 It is a perspective view showing the deformation absorbing member 20 of the fuel cell 1 . Figure 5 It is a cross-sectional view schematically showing main parts of the deformation absorbing member 20 of the fuel cell 1 . Figure 5 along Figure 4 Lines 5-5 are shown.
[0028] The fuel cell ...
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The present invention provides a method of manufacturing a fuel cell in which the load that a standing piece of a deformation absorbing member can receive from a separator unit is increased. The deformation absorbing member (20) used in the manufacturing method of the fuel cell (1) is arranged between the anode side separator (11) and the cathode side separator (12), and has a thin plate-shaped base material (21) and a plurality of raised pieces (22) arranged to stand upright from one surface (21a) of the base material in a grid-like manner. In the arranging process, the extension part (free end part (22b)) extending from the base end (fixed end part (22a)) of the standing piece provided on one surface of the base material is connected with the cathode side separator or the anode side separator. The side partitions are arranged in contact with each other. In the setting step, the interval between the anode-side separator and the cathode-side separator along the stacking direction (X) is set so that the deformation of the erected piece exceeds the elastic deformation region and enters the plastic deformation region, and The proximal end that has moved due to deformation is located in a region that does not come into contact with the cathode-side separator or the anode-side separator.
Description
technical field [0001] The invention relates to a manufacturing method of a fuel cell and the fuel cell. Background technique [0002] Conventionally, a fuel cell is constructed by alternately stacking a plurality of separators and a plurality of membrane electrode assemblies. Since a fuel cell obtains a high output corresponding to the number of stacks of separators and membrane electrode assemblies, it is desirable to increase the number of stacks. By bringing the multi-layered separator and the membrane electrode assembly into sufficiently close contact with each other, the electrical resistance can be reduced and desired battery performance can be achieved. [0003] However, in the separator unit composed of the anode-side separator and the cathode-side separator, the fuel gas (hydrogen gas) of the anode-side separator and the part of the cooling water flow path and the oxidant gas (oxygen-containing oxygen) of the cathode-side separator air or pure oxygen) and the flo...
Claims
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IPC IPC(8): H01M8/0258H01M8/026H01M8/0267
CPCH01M8/0267H01M2008/1095H01M8/0206H01M8/0254H01M8/026H01M8/2404Y02P70/50Y02E60/50H01M8/2483H01M8/0297H01M8/0271
Inventor 福山阳介盐见岳史寺田雄亮田岛典拓
Owner NISSAN MOTOR CO LTD