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Fuel battery system

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 damage to single cells, inability to perform stable operation, carbon precipitation, etc., and achieve the effect of preventing water depletion

Inactive Publication Date: 2010-10-06
TOTO LTD
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AI Technical Summary

Problems solved by technology

It is so difficult to accurately supply a small amount of water in the water supply pipe in a completely dry state, but if the inability to accurately supply water to the reformer is ignored, it may occur in the reformer in the case of insufficient water Carbon deposits and damages the single cell or catalyst, and when there is a lot of water, the temperature of the fuel cell module may not rise and stable operation may not be possible

Method used

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Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to facilitate understanding of the description, the same components are assigned the same reference numerals as much as possible in each drawing, and overlapping descriptions are omitted.

[0039] refer to figure 1 A fuel cell system according to one embodiment of the present invention will be described. figure 1 It is a schematic configuration diagram showing the overall configuration of a fuel cell system FCS as an embodiment. like figure 1 As shown, the fuel cell system FCS includes a fuel cell module FCM, an auxiliary equipment unit ADU, a water storage tank WP2, and a warm water manufacturing device HW.

[0040] First, the fuel cell module FCM will be described. The fuel cell module FCM includes a fuel cell FC, a reformer RF, a control box CB, a carbon monoxide detector COD, and a combustible gas detector GD1. The fuel cell FC is a solid electrolyte fue...

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PUM

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Abstract

The invention provides a fuel cell system, which operates as much as possible even if a water level detecting part in a water tank for storing water supplied to a reformer has failed. Concretely, When there is at least a water level sensor is abnormal and at least a water level sensor is normal in a plurality of water level sensors (DS5a, DS5b, DS5c and DS5d) for detecting the water level in water storage tanks (WP2a, WP2b), the fuel cell system (FCS) estimates the water level in water storage tanks (WP2a, WP2b) and a pulse pump (131) continuously delivers water in estimated supply control to the reformer (RF).

Description

technical field [0001] The present invention relates to a fuel cell system including solid electrolyte fuel cell (SOFC) cells. Background technique [0002] Conventionally, as such a fuel cell system, a solid electrolyte fuel cell (hereinafter also referred to as SOFC) unit cell is known as a bottomless or bottomed cylinder, etc. A fuel cell system in which the fuel gas of hydrogen is fed into an oxidant gas (air) on the opposite side to perform a power generation reaction. The fuel gas is a gas obtained by reforming a gas to be reformed such as city gas, and a so-called steam reforming reaction (hereinafter also referred to as SR) is carried out in a reformer for performing this reformation. A technique of supplying pure water to this reformer has been proposed (see, for example, Patent Document 1 below). [0003] Patent Document 1 below describes a technique for rapidly supplying pure water to a reformer. Furthermore, Patent Document 2 below describes a technique of sup...

Claims

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Application Information

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IPC IPC(8): H01M8/06H01M8/10H01M8/04
CPCY02E60/521Y02E60/525Y02E60/50
Inventor 大江俊春重住司土屋胜久中野清隆川村昌之
Owner TOTO LTD
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