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Fuel cell performing anode dead-end operation with improved water management

A fuel cell and closed-end technology, which is applied in the direction of fuel cells, fuel cell groups, fuel cell additives, etc., can solve the problems of poor hydrogen flow distribution characteristics and insufficient hydrogen diffusion, and achieve the effect of reducing obstacles

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

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Problems solved by technology

In this case, the hydrogen may not diffuse sufficiently due to the water moving to the anode, and the distribution characteristics of the hydrogen flow on the electrode surface may be deteriorated

Method used

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  • Fuel cell performing anode dead-end operation with improved water management
  • Fuel cell performing anode dead-end operation with improved water management
  • Fuel cell performing anode dead-end operation with improved water management

Examples

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Embodiment Construction

[0064] figure 1 is a block diagram showing the configuration of a fuel cell system employing the fuel cell according to the first embodiment of the present invention. This fuel cell system 1000 includes a fuel cell 100 , a high-pressure hydrogen tank 1100 , an air compressor 1200 , and a control unit 1300 .

[0065] The fuel cell 100 is a solid polymer type fuel cell that generates electricity when supplied with hydrogen and an oxygen-containing gas (air) as reaction gases. Details of the fuel cell 100 will be described below. Incidentally, the fuel cell 100 is not necessarily a solid polymer type fuel cell. The present invention is applicable to any of various types of fuel cells.

[0066] The high-pressure hydrogen tank 1100 stores hydrogen as a fuel gas of the fuel cell 100 . The high-pressure hydrogen tank 1100 is connected to a manifold hole (described later) on the anode side of the fuel cell 100 through a hydrogen supply pipe 1110 . On the hydrogen supply pipe 111...

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PUM

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Abstract

An anode gas channel member (30, 30B, 30C, 30D) in which a first porous channel layer (31) and a shower plate (32) having penetrated holes are laminated is disposed on an anode side in a fuel cell. The shower plate (32) is disposed at the anode (12a) side, and a water-repellent layer 34 is provided on a side of the shower plate (32) that is closer to the anode (12a). The water-repellent layer 34 restrains the water moving from the cathode (12c) side to the anode (12a) side from entering the interior of the anode gas channel member (30, 30B, 30C, 30D), and reduces the possibility of the flow ofthe reactant gas being inhibited by water.

Description

technical field [0001] The present invention relates to a fuel cell performing anode dead-end operation. Background technique [0002] Generally, fuel cells generate electricity when supplied with hydrogen and air. In order to improve the power generation efficiency of the fuel cell, it is preferable to distribute the supply amount of the reaction gas to each electrode uniformly. Japanese Patent Application Laid-Open No. 2007-48538 (JP-A-2007-48538), Japanese Patent Application Laid-Open No. 2006-120402 (JP-A-2006-120402), Japanese Patent Application Laid-Open No. 1-122565 (JP-A-1-122565) and the like have proposed various techniques for improving the distribution characteristics (distribution properties) of the reaction gas flow. [0003] However, for a fuel cell, preferably, the electrolyte membrane should be kept moist in order to ensure the proton conductivity of the electrolyte membrane. Therefore, a reaction gas containing water is sometimes supplied to the cathode ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/04H01M8/24
CPCH01M8/04097H01M8/0258H01M8/04291H01M8/0297Y02E60/50H01M8/0245H01M8/0265H01M8/241H01M8/0267H01M8/2483
Inventor 后藤庄吾二见谕
Owner TOYOTA JIDOSHA KK
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