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Fuel cell and method for diassembling the same

A technology for fuel cells and cell stacks, which is applied in the fields of fuel cells, fuel cell disposal/recycling, fuel cell grouping, etc. safety effect

Inactive Publication Date: 2011-04-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the fastening structure using such fastening rods (screws and nuts), since the head and front end of the screw and the nut protrude from the surface of the end plate, there is a problem that the size of the so-called fuel cell becomes large.

Method used

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  • Fuel cell and method for diassembling the same
  • Fuel cell and method for diassembling the same
  • Fuel cell and method for diassembling the same

Examples

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no. 1 Embodiment approach

[0075] figure 1 is a perspective view showing the structure of the fuel cell 10 according to the first embodiment of the present invention, figure 2 is a front view showing the structure of the fuel cell 10, image 3 It is a plan view showing the structure of the fuel cell 10 . in addition, Figure 4 yes image 3 Partial sectional view of line IV-IV in, Figure 5 yes Figure 4 Enlarged part of the figure.

[0076] Fuel Cell 10( Figure 1~3 ) is a solid polymer fuel cell (PEFC) used in household cogeneration systems, two-wheeled vehicles, electric vehicles or hybrid electric vehicles, such as figure 1 as well as figure 2 As shown, a battery stack 12, a current collector plate 14 arranged on both sides in the stacking direction of the battery stack 12, an insulating plate 16, and an end plate 18 are provided. The compression spring 20 between the plate 16 and the end plate 18, a plurality of (four in this embodiment) fastening straps 22 for fastening these components,...

no. 2 Embodiment approach

[0098] Figure 8 (A) and (B) are a perspective view and a cross-sectional view showing main parts of a fuel cell 60 according to a second embodiment of the present invention, respectively. The fuel cell 60 is the fuel cell 10 ( figure 1 ) of the displacement limiting part 26 is changed to another displacement limiting part 62 of the fuel cell, and the other structures are the same as those of the fuel cell 10.

[0099] The displacement restricting portion 62 is integrally provided with the end plate 18 on the side where the connecting portion 24 is located, and restricts the displacement of the fastening band 22 in a direction away from the surface 18c of the end plate 18, and has a connection with the fastening band 22. At least a part of the surface 22d faces a planar facing surface 64c, and has a plate-shaped facing portion 64 disposed so as to intersect (in this case, be perpendicular to) the recessed portion 30 , and a plate-shaped facing portion 64 connected in a direct...

no. 3 Embodiment approach

[0110] Figure 11 (A) and (B) are a perspective view and a cross-sectional view showing main parts of a fuel cell 90 according to a third embodiment of the present invention, respectively. The fuel cell 90 is the fuel cell 10 ( figure 1 ) is changed to a fuel cell in which the displacement restricting part 26 is another displacement restricting part 92, and the other structures are the same as those of the fuel cell 10.

[0111] The displacement restricting portion 92 has screw holes 94 provided on both sides of the recess 30 on the surface 18 c sandwiching the end plate 18 and two through holes 96 a corresponding to the screw holes 94 , and has a surface compatible with the fastening band 22 . At least a part of 22d faces a plate-shaped opposing member 96 and two screws 98 that are inserted through the through-hole 96a and screwed into the threaded hole 94 .

[0112] According to the third embodiment, after the fastening band 22 is housed in the concave portion 30, the oppo...

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Abstract

The invention relates to a fuel cell and a method for diassembling the same. The fuel cell (10) comprises: two end plates (18) arranged on either side of a cell stack (12) in the direction of lamination thereof; a fastening band (22) for fastening the cell stack (12) and the end plates (18) in the direction of lamination; a connecting portion (24) for connecting one end portion (22e) of the fastening band (22) with the other end portion (22f) thereof; and a displacement restricting portion (26) provided in at least one of the two end plates (18) for restricting the displacement of the fastening band (22) in the direction away from a surface (18c) of the end plates (18).

Description

technical field [0001] The present invention relates to a fuel cell in which a cell stack, which is a laminated body of single cells, is fastened by fastening bands, and a disassembly method of such a fuel cell. Background technique [0002] A general fuel cell stack is constituted by stacking a plurality of single cells (cells) as disclosed in Patent Document 1, and collector plates, insulating plates, and end plates are sequentially disposed on both sides of the stack in the stacking direction. . Furthermore, the laminated body including the battery stack, current collector plates, insulating plates, and end plates is fastened in the stacking direction using fastening rods (screws and nuts), thereby maintaining the electrical connection between the single cells. [0003] However, in the fastening structure using such fastening rods (screws and nuts), there is a problem that the size of the so-called fuel cell increases because the head and tip of the screw and the nut pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/24H01M8/10H01M8/12B65D19/38
CPCY02E60/50H01M8/008H01M8/248H01M8/04201H01M8/2465Y10T29/49815Y02W30/84
Inventor 鹈木重幸安本荣一柴田础一日下部弘树
Owner PANASONIC CORP
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