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
CN101689665AActive Publication Date: 2010-03-31TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TOYOTA JIDOSHA KK
Publication Date
2010-03-31

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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.
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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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