Fuel cell water distribution piece testing device and testing method thereof

Abstract

The invention provides a fuel cell water distribution piece testing device and a testing method thereof and relates to the technical field of fuel cells. The device comprises a high-pressure gas source, a pressure regulating valve, a control flow meter, a bubbling humidification tank, a heat exchanger, a circulating water pump, a sprayer, a dew point detector, a water distribution piece, a drain valve and a TVP particle size distribution instrument, wherein the high-pressure gas source is connected with the control flow meter, the control flow meter is connected with a gas inlet of the bubbling humidification tank, a gas outlet of the bubbling humidification tank is connected to the water distribution piece, a heat exchanger and a circulating water pump are connected between a circulating inlet and a circulating outlet of the bubbling humidification tank, a dew point detector and a sprayer are sequentially connected between pipelines of a water outlet and a gas outlet of the bubbling humidification tank, a liquid outlet of the water distribution piece is connected with a drain valve, and the gas outlet is connected with a TVP particle size distribution instrument. According to the high-pressure gas source, a running state of the galvanic pile can be simulated, the independent performance test can be carried out on the water distribution piece in the simulated running state of the galvanic pile, the test effect is accurate, efficiency is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell water separator test device and a test method thereof. Background technique [0002] A fuel cell engine is a device that directly converts the chemical energy in hydrogen fuel into electrical energy through an electrochemical reaction. It has the advantages of high efficiency, low emissions, simple installation and maintenance, good reliability, low pollution, and strong adaptability. The reactants of the hydrogen fuel cell are hydrogen and oxygen, and the product is only water, where the water is mainly produced on the air side; however, due to the influence of the concentration gradient of water on both sides of the hydrogen space, the liquid water on the air side will pass through the proton exchange membrane Permeate to the hydrogen side; on the hydrogen side of the fuel cell engine, the hydrogen gas at the outlet of the hydrogen chamber is generally recirculat...

AI Technical Summary

Problems solved by technology

The reactants of the hydrogen fuel cell are hydrogen and oxygen, and the product is only water, where the water is mainly produced on the air side; however, due to the influence of the concentration gradient of water on both sides of the hydrogen space, the liquid water on the air side will pass through the proton exchange membrane Permeate to the hydrogen side; on the hydrogen side of the fuel cell engine, the hydrogen gas at the outlet of the hydrogen chamber is generally returned to use by a circulation pump or an ejector. The liquid water brought in enters the stack, which causes a single low problem; therefore, it is generally necessary to install a water separator at the hydrogen outlet of the stack to separate the steam and water from the hydrogen, and discharge the liquid water through the tail valve, while the returning gas does not contain liquid water

However, it takes a long time to design and verify the water distribution parts. Secondly, when verifying the water separation efficiency of the water distribution parts, it is generally verified after being installed with the electric stack. Different electric stack models need to be matched differently. It is impossible to perform separate performance verification on the water distribution parts, which has a great impact on the product development cycle and performance

[0003] To sum up, there are the following problems in the performance verification of the water distribution parts in the prior art: 1. During the verification of the water separation performance of the water distribution parts, the dew point temperature of the gas cannot be controlled, and the overhumidity gas cannot be provided

2. The water separation performance test of the water separation parts is mainly to verify the matching with the stack, which has the problems of high cost and long cycle

3. When the water separation performance of the water separation parts is matched with the stack for performance verification, the particle size of the liquid in the gas after water separation cannot be measured, and the water separation performance of the water separation parts cannot be accurately determined

[0004] Therefore, there is an urgent need to provide a fuel cell water separator testing device and its testing method to solve the technical problems in the prior art that the performance of the water separator cannot be detected independently

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