电动汽车动力电池液体冷却系统构建及其工作过程仿真  

Construction of power battery liquid cooling system for electric vehicle and simulation of its working process

作　　者：张天时[1,2] 宋东鉴 高青[1,2] 王国华[1,2] 闫振敏 宋薇[1,2] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]吉林大学汽车工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2018年第2期387-397,共11页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51376079);长春市科技创新"双十工程"项目(17SS022);吉林发改委产业创新专项项目(2016C022);吉林省科技厅青年人才基金项目(20180520066JH)

摘　　要：为保障电动汽车电池组较佳的工作温度,提出一种热泵辅助液体循环电池冷却系统,并利用理论和实验表征方法基于MATLAB平台建立各构件模型。计算结果表明,该冷却系统能够满足电池高温高负荷冷却需求,其中热泵辅助冷却作用明显。同时,通过一维计算初步分析表明,电池散热器前置于冷凝器的布置形式相比后置形式具备更好的电池冷却换热效果。此外,在行驶工况下,电池冷却过程中水泵液流量的作用相比风扇更加敏感,在高温高负荷工况下应以水泵调节为主。To ensure better operation temperature of the battery pack for electric vehicle,a battery cooling system with heat pump was proposed,and the model and the system were built on MATLAB using theoretical and experimental description method.The numerical simulation results show that the proposed system can effectively meet the battery cooling requirement at high temperature and high working load,and the heat pump has obvious auxiliary cooling effect.If the battery radiator is placed in front of the condenser the cooling effect is better than that the battery radiator is placed behind the condenser.In addition,the impact of the liquid flow rate is more obvious than the rotational speed of the fan in the dynamic cooling process.Therefore,the pump should serve as the main regulation factor in the battery cooling process,especially under high temperature and high load conditions.

关 键 词：车辆工程 电动汽车 电池冷却 热泵辅助 模型构建 仿真计算 

分 类 号：U469[机械工程—车辆工程]