摘要
CO_(2)热泵系统因为制热效率高而被应用于电动汽车空调。由于低温下电动汽车电池放电容量会降低,设计了一种双路并联CO_(2)热泵系统,可同时为乘客舱和电池加热,目的是进一步提升电动汽车冬季续航里程。利用Dymola软件对该CO_(2)热泵系统进行仿真,预测了不同外温下的制热性能,分析了电池冷却液入口温度和各电磁阀开度的改变对系统制热性能的影响,据此提出了此系统的控制策略,并通过台架试验验证了仿真的准确性。
CO_(2)heat pump has been applied in electric vehicle(EV)air conditioning system for its high heating efficiency.As the battery capacity of EV decreases in low temperature,a two-way parallel CO_(2)heat pump system is designed to heat up both the cabin and the battery,aiming to fur⁃ther enhance the winter range of electric vehicles.The software Dymola is applied to simulate the CO_(2)heat pump system,predict its performance under different ambient temperature,and analyze the im⁃pact of battery coolant inlet temperature and electronic valve opening on the system heating perfor⁃mance.The system control strategy is then proposed.A bench test is also conducted to validate the ac⁃curacy of the simulation.
出处
《上海汽车》
2024年第12期10-14,26,共6页
Shanghai Auto
