Sealing property detecting device and method for fuel cell membrane electrode

Abstract

The invention discloses a sealing property detecting device and method for a fuel cell membrane electrode. The device comprises a mold assembly, a press fitting system, an air supply system, and a detection system. The mold assembly includes a first mold, a second mold, a first gasket and a second gasket hole. The first mold is provided with a first receiving groove, a first inlet flow channel, and a second inlet flow channel. The second mold is provided with a second receiving groove of a second gas diffusion layer and a first outlet flow channel. The press fitting system is connected with the mold assembly. The air supply system is connected with the first inlet flow channel and the second inlet flow channel; and a first control valve and a second control valve that correspond to the first inlet flow channel and the second inlet flow channel one by one are arranged between the first inlet flow channel and the second inlet flow channel and the air supply system. The detection system is connected with the first outlet channel; and a third control valve is arranged between the first outlet flow channel and the detection system. No polar plate needs to be installed in membrane electrode detection; and the operation time is short. The leakage and blow-by detection of the membrane electrode are carried out simultaneously.

Description

technical field [0001] The invention belongs to the technical field of fuel cell testing, and in particular relates to a leak detection device and method for a fuel cell membrane electrode. Background technique [0002] A fuel cell is a power generation device that converts the chemical energy of hydrogen into electrical energy. It has the advantages of no pollution, low operating temperature, and low noise, and has been widely developed and applied in many fields. As a clean energy product, the fuel cell has opened up a new way of energy utilization. [0003] Membrane electrode assembly, abbreviated as MEA, is the core component of the fuel cell and the place where the fuel cell undergoes oxidation and reduction. The fuel cell is assembled by multi-layer stacking of MEA and bipolar plates. One side of the MEA is hydrogen, and the other side is oxygen, which plays the role of isolating gas and exchanging protons. If the MEA leaks or is damaged, it will directly cause the m...

AI Technical Summary

Problems solved by technology

[0004] In related technologies, the sealing performance test of MEA is basically only for internal leakage detection, there is no effective method to detect the external leakage of MEA, and the detection operation of MEA is complicated and time-consuming, and bipolar plates are required to be installed, and some presses are used. Seal detection, wasting a lot of time

To sum up, the bipolar plate detection methods in related technologies are only suitable for prototype production and detection, and cannot meet the requirements of commercial mass production

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