Title:
燃料電池システム及び金属イオン含有量の推定方法
Document Type and Number:
Japanese Patent JP6897626
Kind Code:
B2
Abstract:
A fuel cell system includes: a fuel cell including an MEA including an electrolyte membrane and anode and cathode catalyst layers sandwiching the electrolyte membrane; an impedance measuring device measuring AC impedance of the fuel cell when AC voltage is applied to the fuel cell; an impedance acquisition unit configured to obtain a first imaginary part value of the AC impedance measured when AC voltage with a fixed frequency satisfying Fixed frequency [Hz]×(Thickness of the electrolyte membrane [μm])2≤500 [Hz×μm2] is applied in a state where a relative humidity of the MEA is 20% or greater, and a fuel gas is present and an oxidant gas is absent in the anode and cathode catalyst layers; and a metal ion estimation unit configured to estimate a content of metal ions in the electrolyte membrane based on the first imaginary part value of the AC impedance.
Inventors:
Masao Shibata
Application Number:
JP2018077162A
Publication Date:
June 30, 2021
Filing Date:
April 12, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M8/04537; H01M8/02; H01M8/04303; H01M8/04313; H01M8/04746; H01M8/04828; H01M8/1067
Domestic Patent References:
| JP2007073351A | ||||
| JP2017073376A | ||||
| JP2017174549A | ||||
| JP2009238649A | ||||
| JP2016024852A |
Foreign References:
| WO2006040985A1 | ||||
| WO2011042932A1 |
Attorney, Agent or Firm:
Shuhei Katayama