Title:
FUEL CELL SYSTEM
Document Type and Number:
Japanese Patent JP2022122657
Kind Code:
A
Abstract:
To provide a fuel cell system capable of appropriately estimating the state of charge of a capacitor regardless of capacitor deterioration or capacitor temperature.SOLUTION: A fuel cell system side ECU 36 calculates the current state of charge of a capacitor 38 on the basis of the amount of charge at the maximum charge state, which is the product of a value obtained by correcting the initial terminal voltage of a capacitor 38 at the maximum charge state by the degree of deterioration of the resistance and the capacitance, the amount of charge at the minimum charge state, which is the product of a value obtained by correcting the initial terminal voltage of the capacitor 38 at the minimum charge state by the degree of deterioration of the internal resistance and the capacitance, and the current amount of charge by a time integration value of a charge/discharge current by an open-circuit voltage and capacitance immediately after startup and a current detector 40 from the start of charging and discharging of the capacitor 38 to the present.SELECTED DRAWING: Figure 2
Inventors:
TOMIMOTO HISAYA
Application Number:
JP2021020028A
Publication Date:
August 23, 2022
Filing Date:
February 10, 2021
Export Citation:
Assignee:
TOYOTA IND CORP
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
H01M8/04; B60L3/00; B60L50/40; B60L50/75; B60L58/12; B60L58/16; H01M8/04537; H02J7/00
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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