Hydrogen fuel cell test environment pressure simulation method and simulation system

Abstract

The invention discloses a hydrogen fuel cell test environment pressure simulation method, which is used for simulating different altitude pressure (including but not limited to high altitude pressure) test environment pressure, and comprises the following steps: generating negative pressure through high-pressure fluid to form a negative pressure source; after stabilizing the pressure of the negative pressure source, hermetically connecting the negative pressure source with an exhaust port of the tested hydrogen fuel cell, and extracting hydrogen-containing air; and enabling the air subjected to pressure regulation and pressure stabilization to enter the tested hydrogen fuel cell from the air inlet, wherein the pressure of the gas inlet and the gas outlet of the hydrogen fuel cell is equal to the simulated altitude test environment pressure. The invention also discloses a hydrogen fuel cell test environment pressure simulation system. Hydrogen-containing air is sucked and discharged into the atmospheric environment through the negative pressure generated by the high-pressure fluid, the pressure of the hydrogen fuel cell testing environment can be accurately simulated in real time, and the safety of the simulation environment and the stability of the pressure of the testing environment can be ensured.

Description

technical field [0001] The invention relates to the field of environment simulation, in particular to a hydrogen fuel cell test environment pressure simulation method. The invention also relates to a hydrogen fuel cell test environment pressure simulation system. Background technique [0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. With the development of hydrogen fuel cell technology, in order to verify the operating performance and reliability of the battery at different altitudes, it is necessary to simulate the altitude-related environment in the laboratory, so a set of equipment is needed to form the air pressure corresponding to the altitude required for the experiment . [0003] At present, most of the altitude simulations for ordinary engine operating conditions use negative pressure generating equipment such as Roots pumps to form a negative pressure environment. Th...

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Problems solved by technology

[0003] At present, most of the altitude simulations for ordinary engine operating conditions use negative pressure generating equipment such as Roots pumps to form a negative pressure environment. This type of equipment is very suitable for the altitude simulation of ordinary fuel engines, but as mentioned above Hydrogen is a flammable and explosive gas. When this type of equipment is running, the rotating machinery in the flow channel may generate sparks under high-speed operation, and then ignite the hydrogen to form an explosion. This is absolutely not allowed for experimental equipment.

At the same time, hydrogen and air react to form water in the fuel cell, so there are liquid droplets in the exhaust gas, which may cause damage to the rotating parts when entering the equipment, affecting the reliability of the equipment

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