A stack simulation device for the development of high-power fuel cell thermal management system

Abstract

The invention relates to an electric stack simulation device for developing a thermal management system of a large-power fuel cell. Different heating powers of an electric stack are simulated by adjusting an energization state of open-loop control electric heating pipe group and an end voltage of a closed-loop control electric heating pipe, the flow resistance characteristic of a real electric stack is simulated by changing the layers of a filtering net of a resistance adjustment module, the thermal inertia and thermal resistance characteristics of the real electric stack are simulated by simulating a lamination structure of the fuel cell and by combining translation of a mobile grid plate, and the specific heat capacity characteristic of the real electric stack is simulated by controllingthe volume of a cooling liquid in the device. Compared with the prior art, the real electric stack can be substituted during the matching development process of the fuel cell thermal management system, and the electric stack simulation device has the advantages that the matching test process is accelerated and the development efficiency of the thermal management system is improved.

Description

technical field [0001] The invention relates to the field of vehicle power technology and application, in particular to a stack simulation device used for the development of a high-power fuel cell thermal management system. Background technique [0002] Fuel cells generate electricity directly through the electrochemical reaction of fuel (such as hydrogen). Because fuel cells have a series of excellent performances such as high efficiency, zero emissions, stable operation, and no noise, they are regarded as the most likely power source for future automobiles. Fuel cell vehicles are the development trend of the future automobile industry. In the current design, the fuel cell stack is prone to dehydration of the proton exchange membrane due to high local current density and high temperature. The heat energy generated by the fuel cell stack accounts for about 50% of the total energy. In order to prevent the drying of the membrane and high temperature operation, a corresponding...

AI Technical Summary

Problems solved by technology

When designing a fuel cell thermal management system, the following problems will be faced: (1) Whether a good thermal management subsystem can be quickly designed without a physical object based on the thermal-related characteristic parameters of the existing stack; (2) ) How to match the key component parameters in the thermal management system

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