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Fuel cell system

A technology of a fuel cell system and a fuel cell unit, which is applied in the direction of fuel cells, fuel cell additives, circuits, etc., and can solve problems such as the outflow of the water purifier 240, the reduction of water supply, and the obstruction of water supply to the reformer

Inactive Publication Date: 2012-05-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the eluted silver ions, especially the silver ions eluted at the most downstream side of the water purifier 240, cannot be captured by the ion exchange resin in the water purifier 240, so they may flow out from the water purifier 240.
When the outflowing silver ions reach the reformer as a hydrogen supply unit, the precipitated silver may accumulate here and hinder the water supply to the reformer, reducing the water supply, which may lead to malfunction in the operation of
In addition, when water that has passed through the water purifier 240 is used as cooling water for the fuel cell, the conductivity of the cooling water increases due to dissolved silver ions, and there is a possibility that insulation at necessary positions in the fuel cell cannot be ensured.

Method used

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Embodiment approach 1

[0057] figure 1 It is a configuration diagram of the fuel cell system in the first embodiment of the present invention. figure 2 yes figure 1 The lower enlarged view of the cross-section of the water purification device included in the fuel cell system of . Such as figure 1 As shown, the fuel cell system 100 includes a hydrogen supply unit 1, a fuel cell unit (hereinafter simply referred to as "fuel cell") 2, heat exchangers 3-6, a condensed water tank 7, a water tank 8, a water supply path 9, and a control system. device 21 etc.

[0058] Among them, the hydrogen supply unit 1 reforms the fuel gas introduced from the outside of the system 100 into hydrogen-rich reformed gas, and supplies it to an anode 2 a of the fuel cell 2 . On the other hand, air humidified to an appropriate dew point is supplied from the outside to a cathode 2 b of the fuel cell 2 .

[0059] Condensed water is separated from anode off gas discharged from the anode 2 a of the fuel cell 2 in the hea...

Deformed example 1

[0076] image 3 The water purification unit 14a shown in (a) and figure 2 The shown water purification unit 14 is mostly the same in structure, but differs in that the first spacer 34 is provided in the first gap portion 33 . The first separator 34 is formed flat using a material that cannot exchange ions, and water can flow therethrough. As such a material, for example, a resin member provided with a plurality of through holes, a porous resin member, woven fabric, or nonwoven fabric can be used.

[0077] With such a configuration, it is possible to securely secure the first gap portion 33 as a space having a predetermined capacity. In addition, in image 3 In (a), appended with figure 2 Parts marked the same as figure 2 The corresponding parts of the water purification unit 14 have the same structure, so their descriptions are omitted here ( image 3 The same applies to (b) to (d)).

Deformed example 2

[0079] image 3 The water purification unit 14b shown in (b) and figure 2 The shown water purification unit 14 has mostly the same structure, but has a second gap 35 between the activated carbon 16 and the antibacterial unit 17 in addition to the first gap 33 . With such a configuration, a large amount of water containing antibacterial ions can also be retained in the second gap portion 35 , so that the antibacterial agent can be more diffused around the activated carbon 16 .

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Abstract

Disclosed is a fuel cell system which comprises: a fuel cell unit (2) for supplying electric power and heat by generating electric power using a fuel gas and an oxidant gas,a condensed water tank (7) for reserving condensed water that is collected from the gas which is discharged from the fuel cell unit (2),a water supply channel (9) for supplying water from the condensed water tank (7) to the fuel cell unit (2),and a water purification device (14) that is arranged in the water supply channel (9) so as to purify at least ions in the water. The water purification device (14) comprises: an ion exchange resin layer (15),an antibacterial agent layer (17) that is arranged in the upstream of the ion exchange resin layer (15) in the flow direction,an activated carbon layer (16) that is arranged between the ion exchange resin layer (15) and the antibacterial agent layer (17),and a first gap portion (33) that is formed between the activated carbon layer (16) and the ion exchange resin layer (15).

Description

technical field [0001] The present invention relates to a fuel cell system capable of suppressing the proliferation of microorganisms in a water path in the system, thereby enabling maintenance-free operation for a long period of time. Background technique [0002] In general, when power generation is performed by a fuel cell system, in order to carry out the reforming reaction in the hydrogen supply unit that generates hydrogen-rich reformed gas using fuel such as city gas, or to cool the fuel cell, it is necessary to supply less impurities. of water. On the other hand, when power generation is performed in the fuel cell system, reaction product water is produced in the fuel cell, and combustion product water is produced in the hydrogen supply unit. Therefore, these waters are recovered in the condensed water tank as condensed water, and the condensed water is stored in the water tank after passing through a water purification device generally composed of activated carbon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/06H01M8/04
CPCC02F1/505H01M8/0662H01M8/04164C02F1/42Y02E60/50C02F1/283H01M8/04141H01M8/04H01M8/06
Inventor 麻植淳菅宏明山本雅夫
Owner PANASONIC CORP
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