Stamping die for metal polar plate of fuel cell

Abstract

The invention relates to a fuel cell metal pole plate stamping die which comprises a die and a die holder, the die is provided with an ejection mechanism and a die core, and the die core is detachably connected to the ejection mechanism; a plurality of forming surfaces are arranged on the mold core; the die holder is used for mounting a die; the die holder is further provided with a power piece used for driving the die holder to move. The ejection mechanism can enable a plurality of forming surfaces of the mold core to perform forming action in a staggered manner so as to perform step-by-step forming on a flow field runner of a polar plate; the forming surfaces of the mold core are multiple, a step-by-step machining mode is adopted for stamping a flow field runner of a polar plate, the mobility of a polar plate base material can be improved to the maximum degree, then the machining precision and machining quality of the polar plate are improved, large-batch production is greatly facilitated, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a stamping die for a metal pole plate of a fuel cell. Background technique [0002] The fuel cell is a high-efficiency, zero-pollution energy conversion device. Its working principle is to feed hydrogen and oxygen to the anode and cathode respectively. The hydrogen and oxygen undergo a redox reaction under the action of a catalyst, and a large amount of electrons are generated during the reaction process; The fuel cell contains many important parts, among which the metal plate plays an important role in supporting, conducting, diverting, and managing water and heat; currently, the forming of the metal plate is mostly stamped by a mold, and the traditional stamping method is Stamping and forming the flow field and flow channel of the polar plate at the same time, due to the limiting effect of the mold core on the polar plate base material, the polar plate base material cannot be well shr...

AI Technical Summary

Problems solved by technology

[0002] The fuel cell is a high-efficiency, zero-pollution energy conversion device. Its working principle is to feed hydrogen and oxygen to the anode and cathode respectively. The hydrogen and oxygen undergo a redox reaction under the action of a catalyst, and a large amount of electrons are generated during the reaction process; The fuel cell contains many important parts, among which the metal plate plays an important role in supporting, conducting, diverting, and managing water and heat; currently, the forming of the metal plate is mostly stamped by a mold, and the traditional stamping method is Stamping and forming the flow field and flow channel of the polar plate at the same time, due to the limiting effect of the mold core on the polar plate base material, the polar plate base material cannot be well shrunk to the middle area, which will greatly reduce the size of the polar plate base material. The fluidity of the material will cause the plate to quickly produce stress concentration and rupture. Excessive residual stress will also cause problems such as warping and springback, resulting in a decrease in the processing accuracy of the plate; based on the above technical problems, the present invention proposes a Fuel cell metal plate stamping die

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