Fuel cell system and control unit for fuel cell system

A fuel cell system and fuel electrode technology, used in fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve the problems of increased electrolyte membrane impedance and decreased battery output, and achieve the effect of uniform moisture distribution

Active Publication Date: 2010-03-31
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In such a fuel cell system, if the water content of the electrolyte membrane is insufficient, the impedance of the electrolyte membrane increases and the output of the battery decreases

Method used

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  • Fuel cell system and control unit for fuel cell system
  • Fuel cell system and control unit for fuel cell system
  • Fuel cell system and control unit for fuel cell system

Examples

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Embodiment Construction

[0018] Embodiments of the present invention will be described below with reference to the drawings.

[0019] figure 1 It is a schematic diagram showing the configuration of the fuel cell system 1 of the present embodiment. This fuel cell system 1 is a system for generating electricity using an oxidant gas and a fuel gas, and is mounted on a fuel cell vehicle in the present embodiment. However, the fuel cell system 1 can also be applied to other than fuel cell vehicles.

[0020] exist figure 1 Among them, the fuel cell system 1 has a fuel cell 10 . The fuel cell 10 receives supply of oxidant gas and fuel gas to generate electricity. Specifically, the oxidant gas is a gas such as air containing oxygen (oxygen), the fuel gas is a gas containing hydrogen (hydrogen), and the fuel cell 10 utilizes an electrochemical reaction between hydrogen and oxygen to generate electricity. The fuel cell 10 is, for example, a solid polymer electrolyte fuel cell.

[0021] figure 2 is a sch...

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PUM

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Abstract

This invention provides a fuel cell system which can render the distribution of water in an electrolyte membrane even without lowering the pressure of a fuel gas. A fuel cell system (1) comprises an electrolyte membrane (11), an oxidant electrode provided on one side of the electrolyte membrane (11), and a fuel electrode provided on the other side of the electrolyte membrane (11). An oxidant gas flow passage (14) for supplying an oxidant gas along the face of the oxidant electrode and a fuel gas flow passage (15) for supplying a fuel gas along the face of the fuel electrode are provided so that the flow direction of the oxidant gas faces the flow direction of the fuel gas. A control unit (50) conducts control so that, when the electrolyte membrane (11) is dry, the flow rate of the fuel gaswhich flows through the fuel gas flow passage (15) is increased.

Description

technical field [0001] The present invention relates to a fuel cell system and a control device for the fuel cell system. Background technique [0002] There is a conventional fuel cell system including an electrolyte membrane, an oxidizer electrode provided on one surface of the electrolyte membrane, and a fuel electrode provided on the other surface, and an oxidant such as air containing oxygen supplied to the oxidizer electrode is used. The gas and the hydrogen-containing fuel gas supplied to the fuel electrode generate power (for example, refer to JP-A-2004-127914 and JP-A-2000-340241). [0003] In such a fuel cell system, if the water content of the electrolyte membrane is insufficient, the impedance of the electrolyte membrane increases and the output of the battery decreases. [0004] As a technique for preventing the decrease in battery output caused by the lack of water content in the electrolyte membrane, Japanese Patent Application Laid-Open No. 2004-127914 propo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/10
CPCH01M8/04395H01M8/04291H01M2008/1095H01M8/04119H01M8/04604Y02E60/50H01M8/04753
Inventor 桥本卓哉窪英树
Owner TOYOTA JIDOSHA KK
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