关键词: 整车热管理；换热；平衡温度；暖风状态

Abstract: In order to ensure the normal operation of the vehicle system, improve the energy efficiency of the vehicle, it is necessary to predict the temperature, flow and other characteristics of the vehicle thermal management system under different working conditions in the development stage. In this paper, a one-dimensional model of complex heat transfer system with multiple circuits and control is built, it is used to simulate the thermal management system of an extended range vehicle, calculate the equilibrium temperature and time when each component reaches the thermal steady state under the ultimate working condition, determine the influence of different air conditioning conditions on the heating time of the battery. After the calculation to determine, the machine can meet the system cooling requirements in high temperature limit condition, however, there is a risk that the water temperature exceeds the standard after the warm air is opened, and different air conditioning conditions have little influence on the heating time of the battery.

Key words: Vehicle thermal management; Heat transfer; Equilibrium temperature; Warm air condition