Manufacturing method of fuel cell
A fuel cell and manufacturing method technology, applied in the direction of fuel cells, fuel cell parts, manufacturing tools, etc., can solve problems such as weld pool disorder and weld bumps
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no. 1 Embodiment approach
[0028] figure 1 is an explanatory diagram of the fuel cell 100 manufactured by the manufacturing method in one embodiment of the present disclosure. figure 2 It is to use the II-II line to connect figure 1 Schematic diagram of a cutaway section. exist figure 1 The x-axis, y-axis, and z-axis that are orthogonal to each other are shown in . The x-axis is a direction along the short-side direction of the fuel cell 100 , the y-axis is a direction along the long-side direction of the fuel cell 100 , and the z-axis is a direction along the stacking direction of the fuel cell 100 . These axes are in figure 2 The axes shown hereafter correspond.
[0029] The fuel cell 100 is a solid polymer fuel cell that generates electricity by receiving supply of hydrogen and oxygen as reaction gases. like figure 2 As shown, the fuel cell 100 includes a membrane electrode diffusion layer assembly 10 and a pair of separators 20a, 20b. The membrane electrode diffusion layer assembly 10 inc...
no. 2 Embodiment approach
[0044] Image 6 It is a process diagram showing an example of the manufacturing method of the fuel cell in the second embodiment. With regard to the manufacturing method of the fuel cell of the second embodiment, in step S100 ( image 3 ), that is, before the welding step of step S110 , the pressing step of overlapping and pressing the separators 20 is performed differently from the first embodiment, and the other steps are the same as those of the first embodiment. The structure of the fuel cell according to the second embodiment is the same as that of the fuel cell according to the first embodiment, and thus the description of the structure of the fuel cell will be omitted.
[0045] In the second embodiment, in step S105 ( Image 6 ), a pressing process of pressing the pair of spacers 20 stacked in step S100 is performed. More specifically, for example, a pair of separators 20 are stacked and pressed using a press jig to reduce the gap between the ribs 21 of the separator...
no. 3 Embodiment approach
[0049] Figure 9 It is an explanatory diagram of the pressing process of the separator 20 in the third embodiment. In the method for manufacturing a fuel cell according to the third embodiment, in step S105 ( Image 6 ) differs from the second embodiment in that the welding portion is pressed through the opening 201 of the pressurizing jig 200, and other steps are the same as those of the second embodiment. The structure of the fuel cell according to the third embodiment is the same as that of the fuel cell according to the first embodiment, and therefore description of the structure of the fuel cell will be omitted.
[0050] Stamping treatment
[0051] In the third embodiment, in step S105 , the separator 20 is pressurized using the pressurizing jig 200 , and the welding portion 24 is pressurized through the opening 201 by pressing. In this embodiment, if Figure 9 As shown, the supporting member 210 having the concave portion is arranged on the side of the separator 20b,...
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Abstract
Description
Claims
Application Information
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