SIMULINK-based fuel cell stack cold start modeling simulation test method

Abstract

The invention relates to a SIMULINK-based fuel cell stack cold start modeling simulation test method. The method comprises the following steps of 1) constructing a fuel cell stack model based on SIMULINK according to a fuel cell analytical model, and 2) simulating the cold start process of the fuel cell stack according to the fuel cell stack model, and obtaining the voltage output of the cold start process of the fuel cell stack. Compared with the prior art, the method has the advantages that the fuel cell stack model is constructed according to the fuel cell analytical model, the cold start process is accurately expressed, the test prediction result is accurate, and the test cost is reduced.

Description

technical field [0001] The invention relates to the field of fuel cell cold start, in particular to a SIMULINK-based fuel cell stack cold start modeling simulation test method. Background technique [0002] A fuel cell is an energy conversion device that can directly convert chemical energy in fuel into electrical energy. Its typical reactants are hydrogen and oxygen, which are respectively input into the anode and cathode to undergo redox reactions and convert the chemical energy of the reaction into electrical energy. In recent years, with the proposal of the national "carbon peak, carbon neutral" strategy, new energy vehicles have set off a new upsurge. Proton exchange membrane fuel cell (Proton Exchange Membrane Fuel Cell, PEMFC) is a kind of fuel cell that uses proton conductor polymer electrolytic membrane as electrolyte. The application in energy vehicles has received more and more attention and has broad development prospects. [0003] However, the large-scale com...

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Problems solved by technology

[0005] At present, for the research on the cold start of fuel cells, the theoretical research is mainly based on the analytical model and simulation of the single battery, and the mechanism and influencing factors in the cold start process of the single battery are mainly studied. The research at the system level is mainly experimental research. The cost of the cold start test of the battery system is high and the process is cumbersome. The test needs to place the system or the fuel cell vehicle in a large low-temperature environment chamber for the start test. Each test will cause certain damage to the system. The fuel cell simulation model at the system level can provide a reference for the cold start design of the system

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