Title:
燃料電池システムおよびガス漏洩検知方法
Document Type and Number:
Japanese Patent JP4876369
Kind Code:
B2
Abstract:
When a command for stopping electric generation by a fuel cell is issued, shutoff valves are closed (at time t 1 ), and then a time-dependent change in pressure (P) in a closed passage area including the fuel cell is detected. A pressure change speed (dP 1 , i.e., an inclination of L 1 ) when the pressure (P) is in a first pressure range (Ra) in the vicinity of atmospheric pressure and a pressure change speed (dP 2 , i.e., an inclination of L 2 ) when the pressure (P) is in a second pressure range (Rb) that is on a high pressure side of the first pressure range (Ra) are detected, and both the pressure change speeds (dP 1 , dP 2 ) are compared with each other. When a difference between both the pressure change speeds (dP 1 , dP 2 ) is equal to or larger than a predetermined value (Pc), it is determined that there is a hole in an electrolyte membrane of the fuel cell.
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Inventors:
Shinpei Miura
Application Number:
JP2003175118A
Publication Date:
February 15, 2012
Filing Date:
June 19, 2003
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M8/00; H01M8/04; H01M8/10; H01M16/00
Domestic Patent References:
| JP8329965A | ||||
| JP3250564A | ||||
| JP2004192919A | ||||
| JP2003308866A | ||||
| JP11317236A |
Foreign References:
| US6492043 |
Attorney, Agent or Firm:
Meisei International Patent Office