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Anode utilization control system for a fuel cell power plant

A fuel cell and power supply technology, applied in the direction of fuel cells, fuel cell integration, fuel cell additives, etc., can solve the problems of expensive sensors, expensive and destructive sensors, etc.

Inactive Publication Date: 2011-11-02
INT FUEL CELLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If such a temperature sensor fails, removing and replacing a damaged sensor within a complex reformer of a fuel processing system is extremely expensive and disruptive to the operation of the power supply unit
Furthermore, such sensors must be very expensive

Method used

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  • Anode utilization control system for a fuel cell power plant
  • Anode utilization control system for a fuel cell power plant
  • Anode utilization control system for a fuel cell power plant

Examples

Experimental program
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Embodiment Construction

[0025] Referring to the accompanying drawings in detail, the figure 1 An anode utilization system for a fuel cell power plant is shown in and generally indicated by the reference numeral 10 . The system or power device 10 includes: at least one fuel cell 12 including an anode catalyst 14 and a cathode catalyst 16 secured to opposite sides of an electrolyte 18; an anode flow field 20 defined in relation to the anode catalyst 14 and to the fuel. Inlet line 22 is in fluid communication to direct flow of hydrogen rich fuel from fuel inlet line 22 through anode flow field 20 near anode catalyst 14 and out of anode flow field 20 through anode exhaust 24 and anode exhaust valve 25 . Fuel inlet line 22 includes a fuel inlet valve 23 for selectively controlling the flow rate of fuel into anode flow field 20 .

[0026] The fuel cell 12 also includes a cathode flow field 26 defined in fluid communication with the cathode catalyst 16 and with an oxidant source 28 for directing flow of ox...

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PUM

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Abstract

A control system (10) utilizes an oxygen sensor (78) to sense an oxygen concentration within a burner exhaust (66) of a fuel processing system (40), wherein the burner device (44) utilizes an anode exhaust stream from a fuel cell (12) to supply heat to a reformer (48). If the anode utilization by the fuel cell (12) anode (14) exceeds an acceptable range, less hydrogen is available for the burner device (44) and more oxygen will therefore be sensed by the oxygen sensor. An oxygen sensor controller (80), in response to the increase in sensed oxygen, increases flow of a fuel feedstock (42) into the reformer (48) to provide more hydrogen fuel to the anode (14) to thereby return anode utilization to an acceptable anode utilization range. An opposite control sequence occurs if anode utilization falls below the acceptable range.

Description

technical field [0001] The present disclosure relates to a fuel cell power supply suitable for use in a transportation vehicle, a portable power supply, or as a stationary power supply, and in particular to a system and system for controlling the use of hydrogen-rich fuel at an anode of a fuel cell power supply. A method that utilizes fuel produced by a reformer within a fuel processing system of a plant. Background technique [0002] Fuel cells are well known and are generally used to generate electrical current from a stream of hydrogen-rich fuel and an oxygen-containing oxidant to power electrical equipment. Fuel cells are typically arranged in a cell stack assembly having a plurality of fuel cells arranged with a common manifold and other components such as fuel processing systems, controllers and valves to form a fuel cell power plant. In prior art fuel cell power plants of this type, it is well known that the fuel is generated by the fuel processing system reformer an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/06
CPCH01M8/0618Y02E60/50H01M2250/20Y02T90/32H01M2008/1095H01M8/04089H01M8/086H01M8/04022H01M2250/10H01M8/0662Y02B90/14Y02B90/10Y02T90/40H01M8/04H01M8/06H01M8/10
Inventor J·伊索姆
Owner INT FUEL CELLS