Test equipment and control method applied to sweeping vehicle fuel cell environment test

Abstract

The invention discloses a test device and a control method applied to the environmental test of a sweeping vehicle fuel cell. The heat exchanger is used to exchange heat between the outside air and the air in the sealed environment test cabin; the sealed environment test cabin includes an air intake channel, The heat exchange channel, the air outlet channel and the fuel cell test chamber, the inlet end of the heat exchange channel is connected with the air outlet of the fuel cell test chamber, the inlet end of the heat exchange channel is connected with one end of the inlet channel; the air outlet end of the heat exchange channel It communicates with the air inlet of the fuel cell test chamber, and the outlet end of the heat exchange channel communicates with one end of the outlet channel; the other end of the inlet channel communicates with the air outlet of the heat exchanger; the other end of the outlet channel communicates with the first end of the heat exchanger The air intake is connected. Also disclosed is a control method, including an air intake phase, an air supply phase and a test phase. The test equipment and control method avoid the increase of load when the sealed environment test chamber heats or cools new air.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a test device and a control method applied to the environmental test of a sweeping vehicle fuel cell. Background technique [0002] At present, sweeping vehicles have gradually changed from using batteries as power to using fuel cells as power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high; in addition, the fuel cell uses fuel and oxygen as raw materials; at the same time There are no mechanical transmission parts, so there is no noise pollution, and the emissions are mainly heat and water, making the application of the sweeper more quiet and environmentally friendly. [0003] The fuel cell power generation system needs to test the environment before use. Environmental test equipment is a commonly used test...

AI Technical Summary

Problems solved by technology

However, the existing test equipment cannot meet the test requirements for fuel cell products that need to continuously consume oxygen in fresh air to ensure power supply requirements.

If in order to meet the test requirements, simply introduce a rated amount of fresh air according to the test requirements, it will not only increase the heating or cooling load of the equipment several times, but also due to the introduction of a large amount of fresh air, the large amount of water vapor contained in the fresh air will It will solidify on the condenser of the environmental testing equipment, and then block the internal structure of the testing equipment, resulting in the inability of the air in the test chamber to circulate and reach the set target temperature. In addition, when doing high temperature and low temperature tests, the humidity of the fresh air will change. It is also different, so it is necessary to adjust the fresh air humidity in real time according to the specific test scenario to achieve the accuracy of the test. This is also the main reason why the existing equipment cannot introduce fresh air for fuel cell testing.

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