Duel-electrode plate multi-channel hunting flow field structure for proton exchange membrane fuel cell

Abstract

The invention relates to a bipolar plate multi-track snaking flow field structure of a proton exchange membrane fuel battery in the technical field of the duel battery; comprising flow fields at two sides which are formed in a single punching at the same time, and the flow fields are multi-track snaking flow fields, and half-height ridges and half-depth grooves are arranged nearby gas inlets and outlets of the flow fields at two sides; the half-height ridge on the front-side flow field is corresponding to the half-depth groove of the reverse-side flow field, and the half-height ridge on the reverse-side flow field is corresponding to the half-depth groove of the front-side flow field; wherein, the half-height ridge is one part of the ridge, and the height of the half-height ridge is less then that of the ridge and more than zero, and the half-height ridges are arranged between the gas flow passages nearby the gas inlets and outlets, and the adjacent flow passages are communicated by a gap between the upper part of the half-height ridge and a membrane electrode component; the half-depth groove is one part of the flow passage, and the depth of the half-depth groove is less than that of the flow passage and more than zero; the flow passages of the half-depth grooves are communicated by a gap between the half-depth groove and the membrane electrode component. A cooling flow field is omitted, thus greatly simplifying the structure of the metal bipolar plate; the multi-track snaking flow field is used for effectively preventing the problem of difficult water draining.

Description

technical field [0001] The invention relates to a bipolar plate in the field of fuel cell technology, in particular to a multi-channel serpentine flow field structure of a proton exchange membrane fuel cell bipolar plate. Background technique [0002] A fuel cell that directly generates electricity by reacting an oxidizing agent and a reducing agent in a special structure. The fuel cell is mainly due to several major technical bottlenecks, such as the efficiency of the electrolyte and catalyst, the structure and performance of the battery, material performance and manufacturing technology, and the most fundamental cost issue. Proton exchange membrane fuel cell (PEMFC) is a kind of fuel cell that can start quickly at low temperature, has simple structure, low working temperature, and is suitable as a portable power source. The basic working principle of a proton exchange membrane fuel cell is to use a catalyst to split hydrogen into protons and electrons. The protons pass th...

AI Technical Summary

Problems solved by technology

This form of flow field limits the size of the plate

If the bipolar plate is too wide and there are too many parallel flow channels, it is easy to have the problem of difficult drainage of the gas channel, and at the same time, it is difficult to balance the size of the gas distribution head and the gas distribution effect

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