Control method for improving starting and cut-off operation of fuel battery stability

Abstract

This invention relates to a control method for increasing the stable start and close down operation including designing a control system, which operates especially when the generation system of a fuel battery stats and stops according to the time interval of the stop including controlling the H supply and circulation and air supply and discharge for 3~300 seconds 5~20 times of the normal metering ratio of 1.2, 20~2.5 each time when starts and ready to close down the generation system and the system tests itself normal and enters into the idle speed, which can eliminate the water gathering phenomenon in the battery.

Description

technical field

[0001] The invention relates to a fuel cell, in particular to a control method capable of improving the stability of the fuel cell for start-up and shutdown operation. Background technique

[0002] An electrochemical fuel cell is a device that converts hydrogen and oxidants into electrical energy and reaction products. The internal core component of the device is the membrane electrode (Membrane Electrode Assembly, referred to as MEA). The membrane electrode (MEA) is composed of a proton exchange membrane and two porous conductive materials, such as carbon paper, sandwiched between the two sides of the membrane. On the two boundary surfaces of the membrane and the carbon paper, there are even and finely dispersed catalysts for initiating electrochemical reactions, such as metal platinum catalysts. Conductive objects can be used on both sides of the membrane electrode to draw the electrons generated during the electrochemical reaction through an external circ...

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