江苏大学学报（自然科学版）2024，Vol.45Issue(1)：30-37,8.DOI:10.3969/j.issn.1671-7775.2024.01.005
电动汽车电池组冷媒直冷系统工作特性的试验
Experiment on operating characteristics of refrigerant direct cooling system for electric vehicle battery packs
摘要
Abstract
A battery module based on harmonica tube cold plate was designed for the lithium-ion battery thermal management system with electric vehicle air conditioning refrigerant to directly cool the battery pack.The comparison between direct cooling and liquid cooling was carried out,and the effects of ambient temperature,compressor speed,valve opening and discharge rate on refrigerant flow,evaporation temperature and heat dissipation characteristics of the battery pack were investigated.The results show that direct cooling has better cooling effect than liquid cooling in controlling the average temperature of the battery pack.Increasing the compressor speed has significant temperature control effect on the battery pack.Even for high-rate discharge of 2.0 C,the temperature can be controlled below 40.00℃at speed of 3 500 r/min.Increasing the valve opening is beneficial to reducing the average temperature of the battery pack,but it is not conducive to reducing the temperature difference of the battery pack.When the battery pack temperature difference is large,the temperature difference of single battery can account for 88%of the battery pack temperature difference.关键词
锂离子动力电池/汽车热管理/制冷剂/直冷/冷却性能Key words
lithium-ion power battery/automobile thermal management/refrigerant/direct cooling/cooling performance分类
交通工程引用本文复制引用
单春贤,杨鹏,唐爱坤,夏灯富..电动汽车电池组冷媒直冷系统工作特性的试验[J].江苏大学学报（自然科学版）,2024,45(1):30-37,8.基金项目
扬州市产业前瞻项目(YZ2021002) （YZ2021002）
扬州市科技成果转化项目(YZ2021121) （YZ2021121）
