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Fuel cell system

A fuel cell system and fuel cell technology, applied in fuel cells, fuel cell additives, power system fuel cells, etc., can solve the problems of deterioration of accelerators, reduced customer satisfaction, and increased frequency of component replacement.

Pending Publication Date: 2021-11-19
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, deterioration of these devices is easily accelerated, so that there is a problem that the frequency of parts replacement increases
If the frequency of parts replacement increases, it will lead to a decrease in customer satisfaction

Method used

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  • Fuel cell system
  • Fuel cell system
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Examples

Experimental program
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Embodiment Construction

[0017] The fuel cell system of the present disclosure will be described using the fuel cell system 100 as one embodiment. figure 1 is a block diagram of the fuel cell system 100 .

[0018] like figure 1 As shown, the fuel cell system 100 includes at least a fuel cell 10 , an oxidizing gas piping unit 20 , a fuel gas piping unit 30 , and a controller 40 . In addition, the fuel cell system 100 may include components generally included in fuel cell systems. For example, a cooling flow path or the like for cooling the fuel cell 10 may be provided.

[0019]

[0020] The fuel cell 10 is not particularly limited, and known fuel cells that can be used in the fuel cell system 100 can be used. For example, a solid polymer-based fuel cell that generates electricity by receiving supply of an oxidizing gas and a fuel gas can be mentioned. The fuel cell 10 may have a stacked structure in which a plurality of single cells are stacked. Here, the surface connected to the oxidizing gas p...

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PUM

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Abstract

This fuel cell system is provided with a fuel cell, a fuel gas supply flow path, a regulator, an injector, and a controller. The controller drives the regulator in linkage with the injector. The controller compares a fuel gas flow rate required for power generation by the fuel cell with a predetermined fuel gas flow rate, selects the fuel gas flow rate having a larger fuel gas flow rate, and outputs a command to the regulator and the injector. The predetermined fuel gas flow rate is set to be greater than the fuel gas flow rate required for power generation by the fuel cell when the power generation current or the output of the fuel cell is less than the predetermined threshold value.

Description

technical field [0001] This application relates to fuel cell systems. Background technique [0002] In recent years, fuel cell vehicles have been put into practical use as low-pollution vehicles for the purpose of caring for the environment. The fuel cell vehicles are equipped with fuel cell systems that supply fuel gas and oxidizing gas to generate power. In the fuel cell system described above, the fuel gas is supplied to the fuel cell through the injector. [0003] The demand amount of fuel gas to the fuel cell changes according to the operating conditions, so it is necessary to control the flow rate of the supplied fuel gas and the like according to the conditions. For example, Japanese Patent Application Laid-Open No. 2008-146923 discloses a technique for appropriately changing the supply pressure of fuel gas by adjusting the operating frequency of the injector according to the operating conditions of the fuel cell. [0004] On the other hand, the operating sound may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04746H01M8/04082H01M8/04089
CPCH01M8/04089H01M8/04201H01M8/04753H01M2250/20Y02E60/50H01M8/04097H01M8/04388H01M8/04619Y02T90/40
Inventor 田中诚一水野伸和山本和男
Owner TOYOTA JIDOSHA KK