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Fuel cell system and liquid water amount estimating method

A fuel cell system and fuel cell stack technology, applied in the direction of fuel cells, fuel cell additives, fuel cell components, etc., to achieve the effect of improving performance

Active Publication Date: 2020-02-04
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the amount of generated water is predicted based only on the integrated value of generated current as in Japanese Patent Application Laid-Open No. 2010-153246, only the amount of generated water obtained by mixing water vapor and liquid water can be predicted.
Therefore, there is still room for improvement from the viewpoint of predicting the production amount of liquid water

Method used

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  • Fuel cell system and liquid water amount estimating method
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  • Fuel cell system and liquid water amount estimating method

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Embodiment Construction

[0026] (the whole frame)

[0027] A fuel cell system 10 according to the embodiment will be described with reference to the drawings. Such as figure 1 As shown, the fuel cell system 10 according to this embodiment is mounted on a vehicle and includes a fuel cell stack 12 .

[0028] The fuel cell stack 12 of the present embodiment is a cell that generates electricity by being supplied with hydrogen and air. Specifically, the fuel cell stack 12 includes a plurality of single cells, hydrogen flows between the positive electrode (anode, fuel electrode) of the single cell and the separator on the positive electrode side, and air containing oxygen flows between the negative electrode (cathode, air electrode) of the single cell. ) and the separator on the negative side. And, electric power is generated by these chemical reactions of hydrogen and oxygen. In addition, the motor is driven by supplying electric power from the fuel cell stack 12 to the motor.

[0029] At this time, s...

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Abstract

The invention relates to a fuel cell system and a liquid water amount estimating method. The fuel cell system includes: a fuel cell stack at which generation of electricity is carried out by chemicalreaction of hydrogen and oxygen, and from which water and exhaust are discharged; and a liquid water amount estimation section that estimates an amount of liquid water among the discharged water, based on an amount of current that is generated by the fuel cell stack, an amount of air that is supplied to the fuel cell stack, a temperature of the air, a relative humidity of the air, a temperature ofexhaust that is discharged from the fuel cell stack, and a pressure of the exhaust.

Description

technical field [0001] The disclosure relates to a fuel cell system and a method for predicting the amount of liquid water. Background technique [0002] Japanese Patent Laid-Open No. 2010-153246 discloses a fuel cell system that generates electricity by reacting fuel gas and oxidant gas, and has a structure in which liquid water generated during power generation is stored in a trap tank . In addition, Japanese Patent Application Laid-Open No. 2010-153246 discloses that the predicted amount of generated water is calculated based on the integrated value of generated current, and when it is judged to be stored in the collection tank based on the predicted result, When the amount of generated water in the water tank exceeds the threshold value, the drain valve is opened. [0003] However, when the amount of generated water is predicted based only on the integrated value of generated current as in JP-A-2010-153246, only the amount of generated water obtained by mixing water va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04992H01M8/04291H01M8/0662H01M8/04029B60L58/30
CPCH01M8/04992H01M8/04291H01M8/0662H01M8/04029B60L58/30H01M2250/20H01M8/04164H01M8/04776H01M8/04589H01M8/04395H01M8/04335H01M8/04507H01M8/0435H01M8/0441H01M8/04059Y02P70/50Y02T90/40Y02E60/50H01M8/04492H01M8/04619H01M8/04156H01M8/2457H01M8/0202H01M8/04074H01M8/04126H01M2200/20
Inventor 小牧克哉
Owner TOYOTA JIDOSHA KK