Integrated thermal management system (ITMS) is the most important technology for new energy vehicles, which can significantly impact on thermal performance including driving range, battery safety and passenger comfort. In this paper, an ITMS is designed and constructed based on the principle of thermal load of cabin and heat generation of battery. The simulation model of ITMS is established and with the calibration of components. The influence of ambient temperature on thermal performance of ITMS is investigated. The results show that the cab temperature and battery temperature remain constant and fluctuates within a range of 22~27°C and 24~26°C, respectively. The results demonstrate that the thermal performance of ITMS satisfies well with the heat dissipation requirements under ambient temperature range of 25~40°C. Additionally, the results find that the compressor rational speed varies with cabin and battery temperature to reduce compressor power. The energy consumption of ITMS increases from 3.43 kWh to 15.35 kWh with increasing ambient temperature from 25°C to 40°C.
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