Fuel Cell, Method and Apparatus for Manufacturing Fuel Cell

Inactive Publication Date: 2009-04-02
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]In view of the above, the invention provides a fuel cell capable of suppressing fluctuations in the length of a fuel cell s

Problems solved by technology

When a tightening load is applied to the fuel cell stack over an extended period of time, however, creep of an adhesive layer between separators of the cell module or the like causes the fuel cell stack to contract in the direction in which the cell modules are stacked.
If a carbon separa

Method used

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  • Fuel Cell, Method and Apparatus for Manufacturing Fuel Cell
  • Fuel Cell, Method and Apparatus for Manufacturing Fuel Cell
  • Fuel Cell, Method and Apparatus for Manufacturing Fuel Cell

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Example

[0024]FIG. 1 illustrates a fuel cell and a manufacturing method thereof according to a first example embodiment of the invention. FIG. 2 illustrates a fuel cell and a manufacturing method thereof according to a second example embodiment of the invention. FIGS. 3 to 7 can be applied to both the first and second example embodiments of the invention.

[0025]Like reference numerals will be used in both the first and second example embodiments of the invention to represent common or similar parts in the first and second embodiments of the invention.

[0026]First, a fuel cell (either a fuel cell or a single cell) and a manufacturing method thereof which are common or similar in the first and second example embodiments of the invention will be described with reference to FIGS. 1, 3, and 4 to 7.

[0027]The fuel cell that is the object of the fuel cell and manufacturing method thereof according to the invention is a proton-exchange membrane (PEM) fuel cell, for example. This fuel cell is mounted, ...

Example

First Example Embodiment

FIG. 1

[0066]The fuel cell (the stack 23 or the single cell 10) according to the first example embodiment of the invention is manufactured according to FIG. 1. Also, the manufacturing method of the fuel cell (the stack 23 or the single cell 10) according to the first example embodiment of the invention is a manufacturing method according to the steps shown in FIG. 1. The manufacturing method of a fuel cell (the stack 23 or the single cell 10) according to the first example embodiment of the invention is a manufacturing method of a fuel cell, which includes an aging step 103 for progressing through initial creep by applying at least a compression load to a cell module after stacking, and an additional tightening step 104 for additionally tightening the fuel cell stack 23 after the aging step 103.

[0067]In the fuel cell (the stack 23 or the single cell 10) and the manufacturing method thereof according to the first example embodiment of the invention, as shown in...

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Abstract

A fuel cell (stack or a single cell) includes a cell module to which an aging process that progresses initial creep has been applied such that creep during use is reduced compared with a cell module to which the aging process has not been applied. A manufacturing method of a fuel cell (stack or a single cell) includes an aging step for progressing through initial creep by applying at least a compression load to a cell module.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a fuel cell, a method and apparatus of manufacturing the fuel cell.[0003]2. Description of the Related Art[0004]Japanese Patent Application Publication No. JP-A-2002-35985 discloses a fuel cell stack. This fuel cell stack has an elastic member provided at one end thereof to compensate for changes in tightening load. In particular, the gradual loosening or reduction in tightening force, caused by, for example, thermal expansion and contraction, or creep in the lengthwise direction of the stack. The elastic member may be a disc spring, for example, which is able to compensate for changes in the tightening load by adjusting to changes in the lengthwise direction of the fuel cell stack that are within the effective stroke range of the disc spring.[0005]When a tightening load is applied to the fuel cell stack over an extended period of time, however, creep of an adhesive layer between separators of t...

Claims

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Application Information

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IPC IPC(8): H01M2/02B65B11/52
CPCH01M8/04074H01M8/248Y10T29/49108Y02E60/50H01M8/2485H01M8/2404Y02P70/50H01M8/2483
Inventor AKIMOTO, NAOMICHI
Owner TOYOTA JIDOSHA KK
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