Battery electric vehicle has become an important development direction of new energy vehicles because of its advantages of high efficiency, clean and low energy consumption. Thermal management system is required to ensure that the temperature of the battery and motor is in an efficient operating temperature range. However, as the energy required for cooling and heating of the thermal management system is provided by the power battery, the range of electric vehicles is severely reduced. In order to reduce the energy consumption of thermal management system, electric vehicle integrated thermal management system has become an important research direction. In this paper, an integrated thermal management system is designed for battery electric vehicle. The cooling and heating of battery, cooling of motor, and waste heat utilization are considered comprehensively. The simulation model of integrated thermal management system is established, and the accuracy of the model is verified by experiments. The cooling performance, heating performance and waste heat utilization performance of integrated thermal management system were analyzed under different boundary conditions.

纯电动汽车以其高效、清洁、低能耗的优势成为新能源汽车的重要发展方向。需要热管理系统来确保电池和电机的温度处于有效的工作温度范围内。然而，由于热管理系统的制冷和制热所需的能量由动力电池提供，电动汽车的续航里程大大降低。为了降低热管理系统的能耗，电动汽车集成热管理系统成为重要的研究方向。本文针对纯电动汽车设计了一种集成热管理系统。电池的冷却和加热，电机的冷却，综合考虑余热利用。建立了综合热管理系统仿真模型，并通过实验验证了模型的准确性。分析了不同边界条件下综合热管理系统的制冷性能、制热性能和余热利用性能。