Gas tightness detection device for fuel cell stacks

Abstract

The invention relates to a gas tightness detection device for fuel cell stacks. The device comprises a movable support frame, a fixing plate arranged on the top of the movable support frame, and a gastightness detection unit arranged on the fixing plate. The movable support frame is internally provided with a gas storage bottle communicated with the gas tightness detection unit. A fuel cell stackis communicated with the gas tightness detection unit, so that the gas tightness detection unit can detect the gas tightness of the fuel cell stack. Compared with the prior art, the gas tightness detection device for fuel cell stacks can detect the gas tightness of fuel cell stacks, and has the advantages of simple operation, flexible use, accurate detection result and low detection cost. A pressure transmitter transmits real-time pressure data to a pressure digital display instrument so as to display the current pressure value, and other corresponding parameter values under the current pressure are displayed through a multifunctional digital display instrument. The whole detection process is fast and sensitive.

Description

technical field [0001] The invention belongs to the technical field of fuel cells and relates to an air tightness detection device for fuel cell stacks. Background technique [0002] With the explosive development of the automotive hydrogen fuel cell industry, the demand for corresponding fuel cell stacks continues to increase. The airtightness of the stack has a great influence on the performance of the fuel cell, so the airtightness of the stack needs to be tested during the production process of the stack. However, there is no standard stack air tightness detection method and testing equipment in the industry at present, and the testing quality of stacks by various manufacturers is uneven, resulting in some stacks not being able to work normally and affecting the performance of fuel cells; at the same time, some The method adopted by the manufacturer in the detection of the air tightness of the stack is too complicated, and the steps are cumbersome, which increases the p...

AI Technical Summary

Problems solved by technology

However, at present, there is no standard stack air tightness testing method and testing equipment in the industry, and the testing quality of stacks by various manufacturers is uneven, which leads to the failure of some stacks and affects the performance of fuel cells; at the same time, some The method adopted by the manufacturer in the detection of stack air tightness is too complicated and the steps are cumbersome, which increases the production cost

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