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Fuel battery polar plate flow field cavity homogeneity testing method

A fuel cell electrode plate and testing method technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., to achieve the effects of strong operability, promotion of industrialization, and rapid detection methods

Active Publication Date: 2008-01-30
SUNRISE POWER CO LTD
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AI Technical Summary

Problems solved by technology

However, in the prior art, there is currently no effective method for fluid distribution uniformity detection

Method used

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  • Fuel battery polar plate flow field cavity homogeneity testing method

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Embodiment Construction

[0022] The device of accompanying drawing 1 was used to test the oxidizer chambers of 30 fuel cell plates. Firstly, place a failed MEA 5 on the upper part of the tested pole plate 7, seal the tested pole plate 7 and the failed but not leaked MEA 5 by the method of sealing the fuel cell, and then use the end plate 3 Clamp it on both sides. Connect the pressure gauge, differential pressure gauge, regulating valve and flowmeter of the test device with pipelines, feed 0.026MPa air into the inlet 1, and control the outlet flow through the regulating valve 10, so that the gas volume detected by the outlet flowmeter 11 is 0.35m 3 / h, read the differential pressure on the differential pressure gauge and record it in the designed table, see attached table 1 for the table. Repeat the above operations, respectively measure the pressure difference of 30 plates and record them in the table. The measurement results are shown in Table 1. According to the measurement results in Table 1, th...

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Abstract

A fuel cell plate flow field cavity uniform test method and a test device, the test device comprises a pressure meter, a pressure difference meter, an adjustment valve and a flow meter which are connected by a circuitry, the test method is that the upper part of the plate tested flow field is provided with a part being similar to an MEA part, which constitute a component after forming a flow field cavity, and the component is sealed by adopting the same sealing method with a fuel cell, then the component is positioned between two end plates; the input pipeline of the same flow field cavity is connected with the pressure meter, the input gas pressure is monitored, and a definite flux gas is flowed into the input, the output pipeline is connected with a gas adjustment valve and the flow meter to adjust and monitor the flowed gas flux; a pressure difference meter is connected between the input and the output, the pressure difference value of same flow field cavity of each tested plate is recorded and compared, the tested pressure difference values of same flow field cavity of a passel of tested plate is calculated to obtain the average value, a uniformity standard of the flow field cavity is confirmed, and accordingly the unqualified plate is tested and judged.

Description

technical field [0001] The invention relates to the field of fuel cells. In particular, it relates to a method for testing the uniformity of a fuel cell pole plate flow field cavity. Background technique [0002] The pole plate (also called flow field plate) of the fuel cell is one of the key components of the fuel cell, and its weight is about 80% of the total weight of the battery, and its cost is about 45% of the total cost of the battery. The ideal plate should be a good conductor of electricity and heat, with good gas barrier performance, high corrosion resistance, certain mechanical strength, and can evenly distribute the fluid inside the battery. Therefore, a common channel is processed on one or two opposite main surfaces of the fuel cell plate to distribute the fluid inside the battery stack, so that the reactant and coolant can reach the working area through the channel. These common channels are also passages for discharging the products after the reaction. Eve...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 王宇晨马由奇侯中军明平文于高岩
Owner SUNRISE POWER CO LTD
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