Fuel cell vehicle multi-environment comprehensive heat management method

Abstract

The invention provides a fuel cell vehicle multi-environment comprehensive heat management method. Different control modes can be adopted for different environment temperatures. In a normal-temperature environment mode, namely a first control mode, the accuracy and stability of temperature control can be ensured through a feedforward control and feedback control technology. In a second control mode and a high-temperature environment mode, a power system is adopted for cooperative control, so that the working current of a fuel cell is reduced, the efficiency of the fuel cell is improved, the heat production of the fuel cell system is reduced, and the problem of high heat dissipation pressure of a cooling system in the high-temperature environment is solved. In the second control mode and inthe low-temperature environment mode, the waste heat of the fuel cell system is fully utilized, and the energy consumption of a whole vehicle is reduced while the temperature of the fuel cell systemand the temperature in a compartment are guaranteed. Therefore, the accuracy and the stability of the temperature control of the fuel cell system can be ensured in a complex and changeable environmentall the year round, the energy consumption of the whole vehicle is greatly reduced, the economy of the whole vehicle is improved, and the driving range is increased.

Description

technical field [0001] This application relates to the technical field of new energy vehicles, in particular to a multi-environment comprehensive thermal management method for fuel cell vehicles. Background technique [0002] In recent years, new energy vehicles have developed rapidly, among which fuel cells have attracted widespread attention due to their advantages of high efficiency, cleanliness, and pollution-free, and have broad development prospects in the field of transportation. Especially in the field of commercial vehicles, fuel cell vehicles have a longer driving range than pure electric vehicles. However, compared with traditional internal combustion engine vehicles, the operating temperature of fuel cells is relatively low, and the pressure of relying on the environment for temperature difference heat dissipation is high. Therefore, fuel cell vehicles still face great challenges in thermal management. [0003] Among them, the working environment temperature has...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a multi-environment comprehensive thermal management method for fuel cell vehicles to solve the problems of unstable temperature control and high energy consumption of the fuel cell system in traditional fuel cell vehicle thermal management methods

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