Efficient micro fuel cell systems and methods

A fuel cell system and fuel cell technology, applied in the direction of fuel cells, fuel cell additives, circuits, etc., can solve problems such as unavailable

Inactive Publication Date: 2006-10-11
超电池公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fuel cell systems for generating electrical power for portable applications such as electronic devices are desirable but not yet commercially available

Method used

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  • Efficient micro fuel cell systems and methods
  • Efficient micro fuel cell systems and methods
  • Efficient micro fuel cell systems and methods

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Embodiment Construction

[0040] The present invention is described in detail with reference to several preferred embodiments shown in the accompanying drawings. In the following description, numerous specific details are disclosed in order to facilitate a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some or all of these specific details. In other instances, well known process steps and / or structures have not been described in detail in order not to unnecessarily obscure the present invention.

[0041] 1. Fuel cell system

[0042] Figure 1A A fuel cell system 10 for generating electrical energy is shown according to one embodiment of the invention. The fuel cell system 10 includes a hydrogen fuel supply device 12 and a fuel cell 20 .

[0043] The hydrogen gas supply device 12 supplies hydrogen gas to the fuel cell 20 . As shown, supply 12 includes a "reform" hydrogen supply that processe...

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Abstract

The present invention relates to fuel cells and components used within a fuel cell. Heat transfer appendages are described that improve fuel cell thermal management. Each heat transfer appendage is arranged on an external portion of a bi-polar plate and permits conductive heat transfer between inner portions of the bi-polar plate and outer portions of the bi-polar plate proximate to the appendage. The heat transfer appendage may be used for heating or cooling inner portions of a fuel cell stack. Improved thermal management provided by cooling the heat transfer appendages also permits new channel field designs that distribute the reactant gases to a membrane electrode assembly. Flow buffers are described that improve delivery of reactant gases and removal of reaction products. Single plate bi-polar plates may also include staggered channel designs that reduce the thickness of the single plate.

Description

technical field [0001] The present invention relates to fuel cell technology. In particular, the present invention relates to systems for improving the efficiency of fuel cell systems. Background technique [0002] Fuel cells electrochemically combine hydrogen and oxygen to generate electricity. Ambient air readily supplies oxygen. However, the provision of hydrogen requires a practical supply device. Gaseous hydrogen has low energy density, thereby reducing its operability as a portable fuel. Liquid hydrogen with a suitable energy density must be stored at extremely low temperatures and high pressures, making storage and transportation of liquid hydrogen cumbersome. [0003] The reformer hydrogen supply processes the fuel source to produce hydrogen. A fuel source is used as a hydrogen carrier. Currently available hydrocarbon fuel sources include methanol, ethanol, gasoline, propane, and natural gas. Liquid hydrocarbon fuel sources offer high energy density and the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/06H01M8/04089H01M8/0612
CPCY02E60/50Y02E60/12Y02E60/523Y02E60/10
Inventor I·W·凯G·塔克
Owner 超电池公司
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