Dynamic performance test system of vehicle fuel cell and working method of dynamic performance test system

Abstract

The invention discloses a dynamic performance test system of a vehicle fuel cell. The dynamic performance test system mainly comprises an air compressor (1), an air pressure reduction valve (2), an air quality flowmeter (3), an air pressure sensor (7), an air temperature sensor (8), a proton exchange membrane fuel cell (10), a first pressure sensor (11), a first hand-operated valve (12), a hydrogen cylinder (13), a hydrogen pressure reduction valve (14), a hydrogen mass flowmeter (15), a hydrogen pressure sensor (19), a hydrogen temperature sensor (20), a second pressure sensor (22) and a second hand-operated valve (23). The invention also provides a working method of the above test system. Air and hydrogen separately enter the fuel cell for reaction through respective pipelines at a certain temperature and pressure, the dynamic performance curves of an electric pile are tested on conditions that the test system is humidified and is not humidified, and the condition of an electric pile with the optimal working performance is obtained by comparison. By the dynamic performance test system, the dynamic performance of the proton exchange membrane fuel cell can be thoroughly and systematically tested, the service lifetime of the electric pile is protected, only water is generated without any pollutant after reaction of the fuel cell, and environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a vehicle fuel cell dynamic performance testing system and a working method thereof. Background technique [0002] With the development of fuel cells, alkaline fuel cells, phosphoric acid fuel cells, solid oxide fuel cells, proton exchange membrane fuel cells, etc. have been applied in many fields. Among them, the proton exchange membrane fuel cell is considered to be the most likely to replace the internal combustion engine as the next-generation vehicle power plant due to its advantages of high efficiency, fast start-up, high energy density, low noise and no pollution. [0003] As a new energy source for vehicles, fuel cells have increasingly become a research hotspot, and the test of fuel cell dynamic performance has also become the focus of research. Intake flow, air supply pressure, dew point temperature, relative humidity and many other factors directly affe...

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Problems solved by technology

[0004] The patent (200820114566) provides a way and method to test the dynamic performance of proton exchange membrane fuel cells, but the test system is not

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