Integrated testing device and method for compression rigidity and bending rigidity of metal bipolar plate

Abstract

The invention relates to an integrated test device and method for compressive and bending rigidity of a metal bipolar plate. The device consists of hydraulic system, support plate, guide sleeve, guide column, dowel rod, pressure plate, pressure head, metal bipolar plate, support table, slider, slide rail, workbench, displacement sensor, data processing system and hydraulic control System Components. The test method is to press the metal bipolar plate by gradually increasing the pressure of the pressure plate or the pressure head through the hydraulic control system, and observe the displacement-pressure image in the data processing system. The pressure corresponding to the inflection point in the image is the metal bipolar plate. withstand extreme loads. The present invention provides a feasible and effective testing device and method for testing the compressive and bending stiffness of metal bipolar plates, which can predict in advance the ultimate load that the metal bipolar plates can withstand, thereby preventing the metal bipolar plates from being subjected to The loss caused by excessive load deformation failure.

Description

1. Technical field [0001] The invention relates to a thin-plate ultimate load testing technology, in particular to an integrated testing device and method for compressive and bending rigidity of a metal bipolar plate. 2. Background technology [0002] A proton exchange membrane fuel cell (PEMFC) is a device that efficiently converts chemical energy into electrical energy, and its main fuels are oxygen and hydrogen. PEMFC has outstanding features such as high energy conversion efficiency, environmental friendliness, quick startup at room temperature, no electrolyte loss, easy water discharge, long life, high specific power and specific energy, and is therefore considered to be the most powerful competitor to replace traditional energy sources. The main factor hindering the commercial application of PEMFC is the high cost. As the main component of PEMFC, the bipolar plate accounts for 30%-45% of the cost of PEMFC. In order to reduce the production cost of fuel cells, and due...

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Problems solved by technology

[0005] After retrieving domestic and foreign patent documents, the State Intellectual Property Office of China published the publication number CN204882241U on December 16, 2015, and the name is "A Stiffness Testing Device and System". This invention mainly tests the components through the test bracket. Although the method is simple and feasible, the device uses an indenter, which cannot test the stiffness of the whole part of the component such as the metal bipolar plate.

The State Intellectual Property Office of China published the publication number CN203672706U on June 25, 2014, and the name is "a bending strength testing device". This utility model provides a bending strength testing device, which can ensure The stability of the sample, but the device cannot record the maximum pressure that the member can withstand when it bends

In addition, there is no patent literature that can meet the requirements of measuring the compressive stiffness and bending stiffness of components at the same time.

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