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Internal reforming fuel cell assembly with simplified fuel feed

A fuel cell and fuel supply technology, which is applied to fuel cell grouping, fuel cells, molten electrolyte fuel cells, etc., can solve the problems of inability to operate at a fixed operating temperature, insufficient guarantee of gas tightness, and expensive accessories.

Inactive Publication Date: 2002-05-08
ENERGY RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These types of fittings are expensive and cannot be rated to the >500°C operating temperatures required for carbonate fuel cell assemblies because the brazing compounds used to join the metal supply tubes to the ceramic fittings are not stable at these temperatures
Therefore, the complete gas-tightness of these connections is not sufficiently guaranteed during the entire life of the fuel cell assembly

Method used

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  • Internal reforming fuel cell assembly with simplified fuel feed
  • Internal reforming fuel cell assembly with simplified fuel feed
  • Internal reforming fuel cell assembly with simplified fuel feed

Examples

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Embodiment Construction

[0021] Figure 1A A fuel cell assembly 1 according to the principles of the present invention is shown. Assembly 1 comprises a fuel cell stack 2 containing fuel cells arranged in groups labeled groups 11 , 12 , 13 , 14 , 15 , 16 . The battery packs 11-16 each comprise a pack of several batteries, typically 5 to 15 batteries in each pack.

[0022] The fuel cells in the stack 11-16 have an oxidant gas inlet provided on a first surface 1A of the fuel cell stack 1 and an oxidant gas exhaust outlet provided on an opposite surface 1B of the stack. Similarly, the fuel cells in stacks 11-16 have fuel inlets on the other face 1C of the stack 1 and corresponding fuel exhaust outlets on the opposite face ID of the stack.

[0023] In addition, the fuel cells in the stacks 11-16 are capable of internally reforming the hydrocarbon fuel passing through the cells into fuel gas on their own. However, most of the fuel gas for the individual stacks is provided by the reformers 21 , 22 , 23 , 2...

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Abstract

A fuel cell assembly in which fuel cells adapted to internally reform fuel and fuel reformers for reforming fuel are arranged in a fuel cell stack. The fuel inlet ports of the fuel cells and the fuel inlet ports and reformed fuel outlet ports of the fuel reformers are arranged on one face of the fuel cell stack. A manifold sealing encloses this face of the stack and a reformer fuel delivery system is arranged entirely within the region between the manifold and the one face of the stack. The fuel reformer has a foil wrapping and a cover member forming with the foil wrapping an enclosed structure.

Description

technical field [0001] The present invention relates to fuel cell assemblies, and more particularly to fuel cell assemblies using internal reforming. Background technique [0002] So-called direct carbonate fuel cell assemblies are known in which the assemblies convert hydrocarbon fuel directly into direct current. In these fuel cell assemblies, fuel is reformed internally to produce hydrogen for use by the fuel cell. The water and heat generated by the fuel cell are used for reforming reactions. The reforming reaction and the fuel cell reaction proceed in a heat-to-mass transfer connection such that the heat and water generated by the fuel cell are available in situ for the reforming reaction. [0003] Two different types of direct fuel cell components have emerged. In the direct internal reforming assembly described in US Pat. No. 3,488,226, a reforming catalyst is placed within the anode compartment of each fuel cell in direct communication with the cell environment. ...

Claims

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Application Information

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IPC IPC(8): H01M8/06H01M8/14H01M8/24
CPCH01M8/0625H01M2008/147H01M8/244H01M2300/0051H01M8/2485Y02E60/50Y02E60/526H01M8/2457H01M8/0263
Inventor 穆哈迈德·法鲁奎劳伦斯·J·诺瓦库杰弗里·P·艾伦
Owner ENERGY RES CORP