Membrane electrode horizontal type leak detection device

Abstract

The invention provides a membrane electrode horizontal type leak detection device which comprises a device positioning guide device, a pressure device and a leak detection device body. The positioningguide device comprises a base, a guide rod and an end plate; the leak detection device body comprises leak detection plates, a venting device and flow measuring devices; the end plates are arranged at two ends of the base, guide rods are arranged between the two end plates, one or more guide rod mounting holes are respectively formed in the two ends of the leak detection plate, one or more leak detection plates penetrate through the guide rods through the guide rod mounting holes and can slide relative to the guide rods, air inlet holes and air outlet holes are formed in the leak detection plates, the air inlet holes are connected with the venting device, the flow measuring devices are arranged between the air inlet holes and the venting device, the flow measuring devices are arranged onthe air outlet holes, and a membrane electrode detection position is formed between every two adjacent leak detection plates; the pressure device is connected with the end plates and the guide rods. The membrane electrode horizontal type leak detection device can detect multiple membrane electrodes at a time and can improve the leak detection efficiency and reduce the misjudgment rate.

Description

technical field [0001] The invention relates to the field of fuel cell detection, in particular to a membrane electrode horizontal leak detection device. Background technique [0002] Proton exchange membrane fuel cell, also known as hydrogen fuel cell, is an energy conversion device that directly converts the chemical energy of fuel into electrical energy through catalytic electrochemical reactions. It has high energy density, high energy conversion efficiency, and zero emissions. Etc. [0003] The core component of a proton exchange membrane fuel cell is the membrane electrode (MEA). The isolation of the anode fuel hydrogen and cathode air in the membrane electrode is not only the basic condition for the fuel cell to have good power characteristics, but also the basic requirement to ensure the safety of the fuel cell. At the same time, there may also be gas leakage between the system and the environment in the membrane electrode, which will cause the failure of the fuel c...

AI Technical Summary

Problems solved by technology

2. For the improvement of the first method, at present, multiple pieces are stacked together for testing. If there is no air leakage in this stack, it means that each piece in this stack has no air leakage; if there is air leakage in this stack, It is necessary to separate the stack and test each piece to find the membrane electrode with air leakage; this method has a speed advantage for batches with a relatively low air leakage rate (air leakage rate 5%, this method will reduce the inspection speed

However, the device adopts the method of leak detection one by one, the efficiency is very low when working in batches, and the structure of the device is complicated, which cannot effectively solve the problem of low efficiency of membrane electrode leak detection

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