Device and process of measuring surface smoothness of double plate in fuel cell

A surface smoothness and fuel cell technology, applied in the direction of measuring devices, electromagnetic measuring devices, measuring electricity, etc., can solve the problems of inaccuracy and complicated detection methods, and achieve the effect of simple device, easy operation and high accuracy

Active Publication Date: 2007-10-03
SUNRISE POWER CO LTD
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Problems solved by technology

There are many methods for measuring surface flatness, including many devices, such as flatness testers made according to the principle of light refraction, various flatness testers made according to mechanical flatness testing methods, etc. These devices mainly test large plane, because the surface of the bipolar plate is a groove 10 structure as shown in Figure 1, and the width of the groove 10 is very narrow, so the plane generated by the polar plate is a ridge plane, so the surface measurement of the bipolar plate adopts optical and mechanical The detection method is complex and imprecise

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  • Device and process of measuring surface smoothness of double plate in fuel cell
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  • Device and process of measuring surface smoothness of double plate in fuel cell

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Embodiment Construction

[0029] As shown in Figures 1 to 5, the utility model designs a device for detecting the flatness of the sheet-shaped conductor surface according to the idea of ​​testing contact resistance. , the material of the test end plate 1 is insulating material, and the flatness of the test end plate 1 and end plate 2 should be within 0.03mm, that is, the difference between the concave and convex points on the surface of the plate and the thickness should not exceed 0.03mm at most. A conductive test block 3 is embedded on the test end plate 1. The material of the test block 3 can be metal or precious metal plating. The surface of the test block 3, the contact end of the electrode plate 4 and the diffusion layer coincides with the surface of the test end plate 3. And the flatness is consistent, it is the lead-in end of electricity, that is, the current is introduced into the pole plate 4, and the test block 3, the diffusion layer, and the pole plate 4 form an electric test circuit. The o...

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Abstract

The present invention discloses device and process of measuring surface smoothness of double plate in fuel cell. The measuring device includes one measuring end plate with screw hole, one end plate with screw hole and locating hole and test block with installing hole and locating hole. After the measured plate and the diffusion layer are set between the measuring end plate and the end plate and fixed with screws, and the test block is fixed via the installing hole, the surface smoothness of double plate is measured by means of voltammetry method with constant current power source and voltmeter. The present invention has high accuracy, simple operation, simple device and other advantages.

Description

technical field [0001] The invention relates to a device and a method for measuring the flatness of a polar plate, in particular to a device and a method for testing the surface flatness of a bipolar plate of a fuel cell. Background technique [0002] The fuel cell stack is assembled by multi-layer single cells in series, and the single cells are stacked by multi-layer thin sheets. Each component has extremely high flatness. The so-called flatness refers to the height difference between the concave and convex points on the surface of the board, which can ensure the flatness of the surface of the single cell. Only when the single cell ensures extremely high flatness can the battery stack be assembled. The only rigid component inside is the bipolar plate, so the flatness of the bipolar plate is the core component to ensure the flatness of the single cell, and also the core component to ensure the assembly of the battery stack. [0003] In addition to processing the flow field...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/34G01R31/36
Inventor 傅云峰徐乃涛侯中军明平文阳贻华徐洪峰
Owner SUNRISE POWER CO LTD
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