Leakage testing and running-in testing method of fuel cell

Abstract

The invention relates to a leakage testing and running-in testing method of a fuel cell. After quality testing is conducted on the fuel cell, before the fuel cell is overlaid to form a whole pile, leakage testing and running-in testing are conducted according to the following method: a plurality of membrane electrodes and bipolar plates are piled on a piling clamping device to form a leakage testing unit, and the number of the membrane electrodes and the bipolar plates is 5-10 groups; the leakage testing unit is taken out of the piling clamping device and put into a leakage testing clamping device, and leakage testing is conducted; a C-shaped clamp is mounted on the leakage testing unit meeting the requirement to form a testing unit; the testing unit is put into a testing table, and thus running-in testing is conducted; and the C-shaped clamp on the qualified testing unit is disassembled, the membrane electrodes and the bipolar plates are taken out to be used for assembling a fuel cellpile. According to the leakage testing and running-in testing method of the fuel cell, assembling of the testing unit can be fast, efficiently and reliably completed, before the fuel cell is piled, leakage full testing and running-in testing are conducted on the membrane electrodes and the bipolar plates, the assembling efficiency and success rate of the pile can be effectively improved, running-in time after the pile is formed is reduced, and performance consistency of the pile is guaranteed.

Description

technical field [0001] The invention relates to the technical field of fuel cell production, in particular to a fuel cell leak detection and running-in test method. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high. In addition, fuel cells use fuel and oxygen as raw materials, without mechanical transmission parts, so there is no noise pollution, and the emission of harmful gases is very small. Fuel cells are ideal for transportation, stationary power generation, and portable applications. From the perspective of saving energy and prot...

AI Technical Summary

Problems solved by technology

Since the fuel cell stack has not been tightened with nuts, the airtightness test in this state may cause misalignment of the stacked battery units during the pressure application, and it is impossible to ensure that the flow channels of each battery unit are always aligned during the test. Therefore, the detected airtightness value of the stack may not be completely accurate

The utility model patent with the notification number CN207703414U provides an air tightness detection device for fuel cell stacks, and the invention patent with the notification number CN103063375A provides an online test method for the assembly force and airtightness of fuel cell stacks , are all detection devices for one-time forming stacks, and there are problems such as the aforementioned multiple disassembly and assembly that can easily cause damage to multiple membrane electrodes, resulting in performance degradation, and the disassembly and assembly of the stack takes a long time and low efficiency.

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