A test device for air system sub-components for fuel cell system

Abstract

The invention provides an air system sub-component testing device for a fuel cell system, including a conveying device cooling circuit, a medium cooling circuit and an air conveying circuit; the air conveying circuit includes an air filter, an air compressor, an intercooler, a cooling circuit, and a cooling circuit. A Rioli mass flowmeter and a diaphragm pressure control valve; the cooling circuit of the conveying device includes a water replenishing tank, a water pump I, a radiator II, an on-off valve I, an on-off valve II, an on-off valve III and an ultrasonic flowmeter I; the said The medium cooling circuit includes water pump II, radiator I, switch valve V, switch valve VI, switch valve IV and ultrasonic flowmeter III. The technical solution of the present invention solves the problems of difficult operation and low control precision of the existing fuel cell air system testing device.

Description

technical field [0001] The present invention relates to the technical field of fuel cells, in particular, to an air system sub-component testing device for a fuel cell system. Background technique [0002] The proton exchange membrane fuel cell is a high energy conversion rate and clean power generation equipment, which converts the chemical energy of the fuel agent and the oxidant into electrical energy. When the system is running, the air delivery volume and the temperature of the incoming air directly affect the performance output of the system, and can also optimize the power consumption of the air compressor. However, the air is compressible and has high elasticity, and is greatly affected by temperature, pressure and pipeline. In the process of compressing air by the air conveying device, there is a large amount of heat released. At present, the air flow test basically uses a volume flowmeter to measure the air flow. Monitoring, reading is difficult, and the later cal...

AI Technical Summary

Problems solved by technology

However, air is compressible, has great elasticity, and is greatly affected by temperature, pressure, and pipelines, and there is a large amount of heat released during the process of compressing air in the air delivery device. At present, the air flow test basically uses a volume flowmeter to measure the air flow. Monitoring, reading is difficult, and later calculation errors are large, which is not conducive to precise control of gas use

In order to control the outlet pressure of the air delivery device, the throttle valve is generally used as the back pressure regulating valve of the air delivery device in the current vehicle fuel cell industry, which is difficult to operate and has low control accuracy.

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