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The method of purging for fuel cell

A fuel cell and fuel cell stack technology, which is applied in fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve problems such as increasing fuel consumption, and achieve the effect of improving efficiency and performance and stable operation.

Inactive Publication Date: 2010-03-31
CT&T CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the long cycle purge method is the increased fuel consumption due to the longer cycle the purge valve is open

Method used

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  • The method of purging for fuel cell
  • The method of purging for fuel cell
  • The method of purging for fuel cell

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Experimental program
Comparison scheme
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Embodiment Construction

[0038] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] image 3 is a schematic diagram of the purge signal of the fuel cell according to the present invention.

[0040] Such as image 3 As shown in , the purging of the fuel cell is performed by opening and closing a purge valve (not shown in the figure). The purge valve is opened several times for short cycle purges and once for long cycle purges. These short cycle purges and long cycle purges are repeatedly performed.

[0041] In this embodiment, in the long cycle purge, the purge valve may be opened every 2 to 20 minutes, and the purge duration of the purge valve may be 1 to 10 seconds.

[0042] Preferably, the purge valve can be opened once every 10 minutes, and the purge duration of the purge valve can be 3 seconds.

[0043] The optimal value of the short-period purge will be deduced through various experiments in the following when...

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PUM

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Abstract

Disclosed herein is a method of purging a fuel cell, by which water present in fuel cell stacks is discharged outside the fuel cell stacks together with gas by opening and closing a purge valve, including: conducting a short-period purge several times using the purge valve; and conducting a long-period purge once using the purge valve, wherein the short-period purge and the long- period purge arerepeatedly conducted. The method of purging a fuel cell is advantageous in that the short-period purge is conducted several times using a purge valve and then the long-period purge is conducted once,and these short-period purges and the long-period purge are repeatedly conducted, so that the problems occurring when only a short-period purge or only a long-period purge is conducted can be solved,with the result that the efficiency and performance of the fuel cell are improved and the fuel cell can be stably operated.

Description

technical field [0001] The present invention relates to a method for purging a fuel cell, and more particularly, to a method for purging a fuel cell that can improve the efficiency and performance of the fuel cell. Background technique [0002] In general, assuming that a battery is a type of energy storage device, a fuel cell may be referred to as a device for converting chemical energy into electrical energy. [0003] That is, fuel cells generate electricity through the process of combining hydrogen and oxygen into water. [0004] Also, unlike engines and turbines, fuel cells do not produce nitrogen oxides or sulfur because they do not burn fuel. [0005] Today, fuel cells are used in various ways as an alternative energy source. Hereinafter, for convenience of explanation, among various types of fuel cells, a polyelectrolyte fuel cell will be briefly described. [0006] Polyelectrolyte fuel cells are used as energy sources for non-polluting automobiles, household power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04
CPCH01M2008/1095H01M8/04179H01M8/04231Y02E60/50H01M8/04H01M8/10
Inventor 裵重冕李东伟
Owner CT&T CO LTD