西华大学学报（自然科学版）2026，Vol.45Issue(1)：103-112,10.DOI:10.12198/j.issn.1673-159X.5132
电动汽车热泵系统结霜实验研究
Experimental Study on Frosting of Electric Vehicle Heat Pump System
摘要
Abstract
When the electric vehicle heat pump system is heating in winter while the external environ-ment is low temperature and high humidity,the external evaporator is easy to frost.In view of this,this pa-per conducts an experimental study on the frosting of the electric vehicle heat pump system in climatic wind tunnel,a comparative experiment research method is used to study the defrosting performance of heat pumps under different temperatures and humidities.The experimental results show that,under the same high humidity environment with different temperatures,the outer evaporator frosts quickly,and the COP of the heat pump system decreases gradually after frosting,and the lowest COP is only about 1.2.In the same temperature environment with different humidity,the low humidity condition(below 60%)does not frost,while the high humidity condition is easy to frost,and the total power of the frost condition is about 200W higher than that of the non-frost condition,and the COP is about 0.5 lower.When the difference between the evaporation temperature and the dew point temperature is within-10℃,and frosting is not likely to oc-cur.At the same time,the cooling fan should be turned on to increase the heat exchange capacity of the ex-ternal evaporator and enhance the COP of the heat pump system.关键词
电动汽车/热泵系统/结霜/环境风洞Key words
electric vehicle/heat pump system/frosting/climatic wind tunnel分类
交通工程引用本文复制引用
TAN Wenlin,XU Lei,WANG Qingyang,XI Chunfu,LONG Haisheng,ZHAO Dongpeng..电动汽车热泵系统结霜实验研究[J].西华大学学报（自然科学版）,2026,45(1):103-112,10.基金项目
国家重点研发计划项目(2022YFE0208000). （2022YFE0208000）
