Fuel cell 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 impurities mixed, cooling water system material limitation, complex composition or control means, etc., to suppress deterioration. Effect

Inactive Publication Date: 2009-10-28
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that in order to prevent impurities from recycled water from being mixed into the reformed water, it is necessary to install a complicated structure or control means to maintain the purity of the managed water, and in addition, the cooling water system that uses recycled water supplies heavy water. In the case of water rectification, materials used in cooling water systems, etc. are limited

Method used

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Embodiment approach 1

[0111] figure 1 It is a configuration diagram of the fuel cell system in Embodiment 1 of the present invention.

[0112] Such as figure 1 As shown, the fuel cell system in Embodiment 1 includes: a fuel cell 1 that generates electricity using a hydrogen-containing fuel gas and an oxidant gas; The hydrogen generator 2 of the reformer 71 supplies the raw material gas such as city gas to the raw material supply path 17 of the reformer, and is used to supply the hydrogen-rich fuel gas from the hydrogen generator 2 to the fuel gas supply of the fuel cell 1 The path 18 supplies the oxidizing gas to the oxidizing gas supplier 3 of the fuel cell 1 through the oxidizing gas supply path 19 .

[0113] The hydrogen generator 2 is equipped with not only the above-mentioned reformer 71, but also a reformer (not shown) for reducing carbon monoxide in the fuel gas generated by the reformer 71 by a reforming reaction, and for reducing carbon monoxide by an oxidation reaction. A CO remover ...

Embodiment approach 2

[0147] figure 2 It is a configuration diagram of a fuel cell system in Embodiment 2 of the present invention. The basic configuration of the fuel cell system according to the second embodiment is the same as that of the first embodiment, but the configuration on the second water path 11 and the configuration of the cooling water storage tank 5 are different. Therefore, the description will focus on this difference, and the description of the configuration and operation common to Embodiment 1 will be omitted.

[0148] Such as figure 2 As shown, the fuel cell system in Embodiment 2 of the present invention includes a water supply valve 23 provided on the second water path 11 in order to cut off the water supply to the cooling water storage tank 5 , and detects the water content in the cooling water storage tank 5 . The water level detector 24 of the water level is the air bubble separator 25 provided at the connection portion between the first water path 8 and the second wat...

Embodiment approach 3

[0164] Figure 4 It is a block diagram showing the configuration of the fuel cell system according to Embodiment 4 of the present invention. Such as Figure 4 As shown, the fuel cell system according to the third embodiment is basically the same as the fuel cell system according to the first embodiment, but mainly differs in the following points. The following description will focus on these structural differences and their operations, and the description of the common structures and operations of Embodiment 1 will be omitted.

[0165] The fuel cell system of the third embodiment includes a reforming water valve 75 and a cooling water valve 76 instead of the throttle valve A12 and the throttle valve B13 of the first embodiment. The reforming water valve 75 and the cooling water valve 76 are respectively composed of on-off valves, and their operation is controlled by the controller 15 . When the reforming water valve 75 is opened and the cooling water valve 76 is closed, the...

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Abstract

A fuel cell system comprises a fuel cell (1) for generating electricity by using fuel gas and oxidant gas, a hydrogen generating device (2) including a reformer (71) for generating the fuel gas containing hydrogen from a raw material and water vapor, a cooling water passage (4) through which cooling water for cooling the fuel cell (1) flows, a cooling water tank (5) for storing the cooling water,a recovered water tank (7) for storing water recovered from the fuel gas and the oxidant gas discharged from the fuel cell (1), a first water passage (8) connecting the recovered water tank (7) and the reformer (71), a purifier (10) provided in the first water passage (8), a second water passage (11) diverging from the first water passage (8) on the downstream side of the purifier (10) and connecting with the cooling water tank (5), and a first pump (9) for pumping the water from the recovered water tank (7) to the first water passage (8).

Description

technical field [0001] The present invention relates to a fuel cell system including a hydrogen generating device and a fuel cell, wherein the hydrogen generating device generates a hydrogen-rich fuel gas using a raw material containing an organic compound composed of at least carbon and hydrogen, such as city gas, LP gas, and methanol, and water vapor , the fuel cell uses hydrogen-rich fuel gas and oxidant gas to generate electricity. Background technique [0002] The fuel cell system includes a hydrogen generator and a fuel cell. The hydrogen generator includes a reformer that steam-reforms raw materials such as city gas or LP gas to generate hydrogen-rich fuel gas. Electricity is generated by the electrochemical reaction of the generated fuel gas and oxidant gas. The reforming water is supplied to the reformer and becomes water vapor inside the reformer, and is used for reforming the raw material. In addition, cooling water is supplied to the fuel cell in order to maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/06H01M8/10
CPCH01M8/0618H01M8/04044H01M8/04097H01M8/04291H01M8/04223H01M8/04768H01M8/04164H01M8/0668Y02E60/50H01M8/04776H01M8/04029H01M8/04225H01M8/04228H01M8/04302H01M8/04303
Inventor 保田繁树田口清小原英夫
Owner PANASONIC CORP
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