Neutral network fractal runner double-pole plate for proton exchange film fuel cell

Abstract

This invention relates to a neuron network runner dual-pole plate used in PEM fuel batteries, one side of the pole plate is set with a cathode flow field for transmitting oxidizer gas, the other side is set with anode runners for transmitting fuel, inlets and outlets of gas and cooling fluid are set on the pole plate, a flow field transition region and a flow field reaction region set in it and connected with it are placed near the gas inlet / outlet, in which, the runners of the transition region are in the structure of a multi-channel neuron network., the length of runners in the field and the flowing resistance of gas in the runners are almost the same so it is favorable for gas flowing in the field uniformly.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell, in particular to a neural network fractal channel bipolar plate for a proton exchange membrane fuel cell. Background technique [0002] A fuel cell is a device that directly converts the chemical energy of fuel and oxidant into electrical energy through a chemical reaction. It has the outstanding advantages of fast start-up at room temperature, high energy conversion efficiency, little environmental pollution, and low noise. , aerospace and other fields have broad application prospects. [0003] Proton Exchange Membrane Fuel Cell (Proton Exchange Membrane Fuel Cell, abbreviation: PEMFC) uses perfluorosulfonic acid solid polymer as electrolyte, platinum / carbon or platinum-ruthenium / carbon as electrocatalyst, hydrogen or purified reformed gas as fuel, Air or pure oxygen is used as the oxidant, and graphite or surface-modified metal plates with gas flow channels are used as bipolar plates. ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to propose a neural network fractal channel bipolar plate for proton exchange membrane fuel cells by combining the advantages of parallel flow field and serpentine flow field. Turbulent flow is formed in the flow channel in the transition zone of the flow field, which promotes the uniform mass transfer of the gas on the electrode surface, and at the same time reduces the gas pressure at the gas inlet and outlet in the flow field, and avoids excessive gas pressure at the inlet and outlet from causing damage to the proton exchange membrane. damage, improving the stability of fuel cell operation

Images