Title:
Fuel cell stack life evaluation method and manufacturing method
Document Type and Number:
Japanese Patent JP6334346
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a life evaluation method of a fuel cell stack capable of predicting the life of a fuel cell stack.SOLUTION: A life evaluation method of a fuel cell stack has following steps. A stress at the time of fastening is determined for a fastening part and a fastened part. A stress due to thermal expansion caused by the temperature difference of the temperature at the time of fastening and the temperature at the time of operation is determined for the fastening part and fastened part. By using the stress at the time of fastening and the stress due to thermal expansion, a stress at the time of operation start is determined. By using the stress at the time of operation start, a stress during operation is determined for the fastening part and fastened part.SELECTED DRAWING: Figure 3
Inventors:
Daijiro Fukuda
Masato Yoshino
Hideo Omida
Masato Yoshino
Hideo Omida
Application Number:
JP2014190781A
Publication Date:
May 30, 2018
Filing Date:
September 19, 2014
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Energy Systems Co., Ltd.
Toshiba Energy Systems Co., Ltd.
International Classes:
H01M8/247; H01M8/0271
Domestic Patent References:
| JP2011065909A | ||||
| JP2006294492A | ||||
| JP2011198546A |
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office