Title:
A FUEL CELL SYSTEM, ELECTRODE CATALYST DEGRADATION JUDGMENT METHOD, AND MOVING BODY
Document Type and Number:
WIPO Patent Application WO/2008/108451
Kind Code:
A1
Abstract:
Under the condition that a converter (51) lowers an output voltage of a fuel cell (2) and performs an activation process for a catalyst of the fuel cell (2) and supply of an oxidant gas from a compressor (31) to the fuel cell (2) is stopped, a reduction current is measured by a current sensor (2a) while performing scan to change the output voltage of the fuel cell (2) within a predetermined range by the converter (51) as a measurement of cyclic voltammetry and the measurement value is integrated by a control device (6). According to the integrated value, the control device (6) obtains a charge amount of an electrode catalyst of the fuel cell(2) so as to judge whether the charge amount is smaller than a degradation judgment value and displays the judgment result on a display device (55). Thus, it is possible to accurately judge whether the electrode catalyst of the fuel cell is degraded.
Inventors:
NOTO HIRONORI (JP)
MANABE KOTA (JP)
MANABE KOTA (JP)
Application Number:
PCT/JP2008/054101
Publication Date:
September 12, 2008
Filing Date:
February 29, 2008
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
NOTO HIRONORI (JP)
MANABE KOTA (JP)
NOTO HIRONORI (JP)
MANABE KOTA (JP)
International Classes:
H01M8/04; H01M4/90; H01M4/92
Domestic Patent References:
| WO2007000001A2 | 2007-01-04 |
Foreign References:
| JP2006196452A | 2006-07-27 | |||
| JP2006236778A | 2006-09-07 | |||
| JP2002184414A | 2002-06-28 | |||
| JP2006164939A | 2006-06-22 | |||
| JP2005276711A | 2005-10-06 | |||
| JP2006155921A | 2006-06-15 | |||
| JP2005527943A | 2005-09-15 | |||
| JP2004164909A | 2004-06-10 | |||
| US20060166052A1 | 2006-07-27 | |||
| DE102007002426A1 | 2007-11-15 | |||
| JP2006196452A | 2006-07-27 | |||
| JP2006236778A | 2006-09-07 |
Other References:
See also references of EP 2124280A4
"Analysis of electrocatalyst degradation in PEMFC caused by cell reversal during fuel starvation", JOURNAL OF POWER SOURCES, vol. 130, 2004, pages 42 - 49
"Analysis of electrocatalyst degradation in PEMFC caused by cell reversal during fuel starvation", JOURNAL OF POWER SOURCES, vol. 130, 2004, pages 42 - 49
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (23rd FloorRoppongi Hills Mori Tower,6-10-1 Roppongi, Minato-ku, Tokyo 23, JP)
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