Fuel Cell, Method and Apparatus for Manufacturing Fuel Cell

US20090087717A1Inactive Publication Date: 2009-04-02TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
TOYOTA JIDOSHA KK
Publication Date
2009-04-02
Estimated Expiration
Not applicable · inactive patent

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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.
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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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