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Fuel cell system and fuel cell system operation method

A fuel cell system and fuel cell technology, used in fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve problems such as fuel cell system damage, and achieve the effects of inhibiting incomplete combustion and inhibiting discharge

Active Publication Date: 2010-01-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In such an operation stop operation of the fuel cell system, there is a concern that the inside of the system becomes negative pressure due to cooling of the system, and air flows in, thereby causing the hydrogen remaining inside the fuel cell to be absorbed by the air. Oxygen is rapidly oxidized, and the fuel cell system is damaged due to the heat of reaction accompanying this oxidation reaction.

Method used

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  • Fuel cell system and fuel cell system operation method
  • Fuel cell system and fuel cell system operation method
  • Fuel cell system and fuel cell system operation method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0079] figure 1 It is a block diagram schematically showing the configuration of the fuel cell system according to Embodiment 1 of the present invention. In addition, in figure 1 In , the solid lines between the respective components constituting the fuel cell system indicate the transmission paths of water, fuel gas, oxidant gas, and electrical signals. In addition, the arrows attached to these solid lines indicate the flow direction in which water, fuel gas, oxidant gas, and the like are conveyed. In addition, in figure 1 In the figure, only components necessary for explaining the present invention are shown, and illustration of other components is omitted.

[0080] First, the configuration of the fuel cell system 100 according to Embodiment 1 will be briefly described below.

[0081] Such as figure 1 As shown, the fuel cell system 100 of the first embodiment includes: the fuel cell 1 as the main body of the power generation unit, the fuel gas generator 2 for supply...

Embodiment approach 2

[0166] The fuel cell system in Embodiment 2 related to the present invention will be described below.

[0167] image 3 It is a block diagram schematically showing the configuration of the fuel cell system 200 according to Embodiment 2 of the present invention. In addition, in image 3 In , the solid lines between the various components constituting the fuel cell system still indicate the paths through which the fuel gas or oxidant gas flows, and the arrows marked on these solid lines indicate the flow of water and fuel gas or oxidant gas. Flow direction during operation. In addition, in image 3 In FIG. 2 , only components necessary for describing the present invention are shown, and illustration of other components is omitted here. In addition, in image 3 In , the same reference numerals are attached to the same components as those of the fuel cell system 100 shown in the first embodiment.

[0168] Such as image 3 As shown, the basic configuration of the fuel cell s...

Embodiment approach 3

[0182] The fuel cell system in Embodiment 3 related to the present invention will be described below.

[0183] Figure 5 It is a block diagram schematically showing the configuration of the fuel cell system 300 according to Embodiment 3 of the present invention. In addition, in Figure 5 In , the solid lines between the various components constituting the fuel cell system still indicate the paths through which the fuel gas or oxidant gas flows, and the arrows marked on these solid lines indicate the flow of water and fuel gas or oxidant gas. Flow direction during operation. In addition, in Figure 5 In the figure, only components necessary for explaining the present invention are shown, and illustration of other components is omitted. Additionally, for Figure 5 Components that are the same as the components of the fuel cell system 100 shown in Embodiment 1 are assigned the same reference numerals.

[0184] Such as Figure 5 As shown, the basic configuration of the fuel...

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Abstract

A fuel cell system includes: a fuel cell (1) for generating electricity by using a fuel cell; a fuel gas generator (2) for generating a fuel gas containing hydrogen by using a raw material; a burner (2a) for heating the fuel gas generator; a fan (2b) for supplying air to the burner (2a); and a controller (101). A fuel cell (1) is filled with the raw material before the fuel gas is supplied. When starting supply of the fuel gas generated by the fuel gas generator (2) to the fuel cell (1), the controller (101) controls open / close valves (8, 9) to the open state so as to divide the fuel gas to a second path (R2) and a fourth path (R4).

Description

technical field [0001] The present invention relates to a fuel cell system for generating electricity using hydrogen and oxygen and a method of operating the fuel cell system. Background technique [0002] Conventionally, fuel cell systems that can realize small-scale power generation with high efficiency are being used as distributed power generation systems that can achieve high energy utilization because it is relatively easy to construct a system for utilizing heat generated during power generation. develop. [0003] In the shutdown operation of such a fuel cell system, there is a concern that the inside of the system becomes negative pressure due to the cooling of the system, and air flows in, thereby causing the hydrogen remaining inside the fuel cell to be absorbed by the air. Oxygen in the fuel cell is rapidly oxidized, and the fuel cell system is damaged by the heat of reaction accompanying this oxidation reaction. [0004] In order to solve such problems, there a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04C01B3/38H01M8/06H01M8/10
CPCC01B3/384H01M8/0662H01M8/04089C01B2203/1604C01B2203/16Y02E60/50H01M8/04776C01B2203/0827C01B2203/044H01M8/04223C01B2203/1619H01M8/04753C01B2203/047C01B2203/0233H01M8/0668C01B2203/0822H01M8/04373C01B2203/169H01M8/04559H01M8/04761C01B2203/1223C01B2203/0283H01M8/0618C01B2203/066H01M8/0444C01B2203/1241H01M8/04738C01B2203/0445C01B2203/1247C01B3/48H01M8/04225H01M8/04228H01M8/04302Y02P20/10
Inventor 行正章典尾关正高小原英夫中村彰成
Owner PANASONIC CORP
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