Title:
FUEL CELL SYSTEM AND CONTROL METHOD THEREOF
Document Type and Number:
Japanese Patent JP2021131964
Kind Code:
A
Abstract:
To provide a technology capable of eliminating an increase in fuel gas concentration in exhaust gas of a fuel cell stack.SOLUTION: A fuel cell system includes a control unit that controls the operation of an oxidant gas supply/discharge system and a fuel gas supply/discharge system and controls the power generation of the fuel cell stack, and when the control unit detects a fuel gas concentration abnormality in which the fuel gas concentration in the exhaust gas exceeds an allowable value during power generation of the fuel cell stack, the control unit executes exhaust gas dilution control for increasing the flow rate of the air sent out by an air compressor, and increasing the ratio of the flow rate of the air flowing out from a bypass pipe to an exhaust gas pipe to the flow rate of the air supplied to the fuel cell stack by controlling the opening degree of a bypass valve.SELECTED DRAWING: Figure 7
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Inventors:
NANBA RYOICHI
Application Number:
JP2020026102A
Publication Date:
September 09, 2021
Filing Date:
February 19, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M8/04089; H01M8/04302; H01M8/0444; H01M8/04664; H01M8/04701; H01M8/04746
Domestic Patent References:
| JP2011076816A | 2011-04-14 | |||
| JP2007317471A | 2007-12-06 | |||
| JP2013218789A | 2013-10-24 |
Attorney, Agent or Firm:
Meisei International Patent Office