Matching type forming method and device of fuel battery metal flow field plate

Abstract

The invention relates to the field of micro fuel batteries, specially relates to matching type forming method and device of a fuel battery metal flow field plate, and in particular is suitable for micro-forming suitable for a superthin metal flow field plate with a complicate structure. The matching type forming method comprises the following steps that: according to the structure and the cross-section shape of a flowing passage of a predesigned micro metal flow field plate, an upper die head is designed as a convex die, a lower die head is designed as a concave die, center lines of the two die heads are coincided, the upper die head and the lower die head are opposite, matched and compatible, the lower die head is fixed, and the upper die head can longitudinally move. Moving paths of an upper forming die head and an lower forming die head are planned according to the flowing direction of the flowing passage, and the motions of an X-axial platform and a Y-axial platform are controlled through a control system, so that the motions of the upper forming die head and the lower forming die head are achieved, and the forming of a whole flow field is finished. The forming device comprises a base, an X-axial platform, a Y-axial platform, a blank-pressing device, a control system and a forming system. By utilizing the matching type forming method, the forming of any micro metal flow field plate with the complicate shape can be achieved, and the matching type forming method is beneficial to promoting the application of the micro metal flow field plate in micro fuel batteries.

Description

technical field [0001] The invention relates to the technical field of micro-fuel cells and the field of micro-machining, in particular to a fuel cell metal flow field plate cooperative forming method and device, which are suitable for opposite rapid forming of flow channels of ultra-thin metal flow field plates, and have high processing efficiency And the product has high precision. Background of the invention [0002] The demand for modern industrial energy has risen sharply, and the harmful substances released during the combustion of fossil fuels are causing the continuous deterioration of the ecological environment. The research and development of green energy is very urgent. A fuel cell is a power generation device that isothermally and directly converts chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner. Proton exchange membrane fuel cell (PEMFC) can start quickly at room temperature, has no electroly...

AI Technical Summary

Problems solved by technology

Chinese patent 1787261A proposes "a stamped metal bipolar plate structure and its preparation method", which uses a milling machine to process the flow channel, and then stamps the metal bipolar plate. The processing efficiency of the flow channel is low, and it is not suitable for the processing of micro flow channels.

However, with the miniaturization of the flow channels on the micro flow field plate, the processing difficulty and cost of the micro punch and die have risen sharply, and the processing efficiency is low, which is not suitable for low-cost mass production of the micro flow field plate.

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