Fuel cell copper bar assembly and manufacturing method thereof

Abstract

The invention also discloses a fuel cell copper bar assembly and a manufacturing method thereof. The fuel cell copper bar assembly comprises a copper bar body used for connecting a direct current converter with an anode collector plate and a cathode collector plate, and a copper bar base used for being fixedly connected with an outer package of a fuel cell stack. The copper bar base is made of thermosetting plastic and is connected with the copper bar body into a whole through a compression molding process. As the copper bar base is integrally connected with the copper bar body through the compression molding process by adopting the thermosetting plastic, the compression molding process enables the thermosetting plastic to fill the cavity at a high speed under the extrusion action of the pressure head, thereby avoiding the bending deformation of the hard copper bar of the copper bar body and the damage of the insulating layer, and ensuring that the space between the copper bar base and the insulating layer meets the IP67 requirement, and further ensuring the voltage-withstanding performance, the insulating performance and the anti-corrosion performance of the copper bar, and meanwhile, the cost is relatively low, the efficiency is relatively high, the operation is convenient and fast, the batch rapid production can be realized, and the large-scale mass production requirement is met.

Description

technical field [0001] The invention relates to the technical field of fuel cells, more specifically, to a fuel cell copper bar assembly and a manufacturing method thereof. Background technique [0002] Hydrogen fuel cells convert hydrogen and oxygen into electrical energy through electrochemical reactions under the action of catalysts, and the final product is water. It has the advantages of high conversion efficiency, low noise, and no pollution. It is considered to be one of the most important power development directions in the future. one. [0003] The fuel cell stack is composed of the core, end plates, packages, collector plates and copper bars, etc. The core is composed of bipolar plates and membrane electrodes stacked on each other. When the core is compressed or thermally expands and contracts, The height of the core will be deformed to a certain extent, and copper bars are required to compensate for this deformation, to carry out current transmission and to conne...

AI Technical Summary

Problems solved by technology

[0005] At present, the connection between the copper bar base and the copper bar is mainly done by machining the copper bar base, and the epoxy resin AB glue is artificially poured between the copper bar and the base. Guarantee, the IP67 requirements between the base of the copper bar and the insulation layer cannot be guaranteed, and the glue filling operation is complicated, which cannot meet the needs of mass production

Images