纯电动汽车制冷工况下电池直冷优化设计  

Optimal design of battery direct cooling of pure electric vehicles under refrigeration conditions

作　　者：胡远志[1] 罗毅 HU Yuanzhi;LUO Yi(Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of education,Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054

出　　处：《重庆理工大学学报（自然科学）》2023年第2期123-133,共11页Journal of Chongqing University of Technology：Natural Science

摘　　要：针对某款纯电动汽车相对独立的空调系统、电池热管理系统、电机热管理系统,优化设计一种满足夏季制冷工况电池直冷的集成式热管理系统。首先在实验基础上搭建电池生热模型,并且将电池热管理系统中电池冷却方式由液冷改为更高效的冷媒直冷,然后搭建一维整车热管理系统优化模型,并在新欧洲驾驶循环工况下仿真测试。仿真结果表明:采用电池直冷后整车热管理系统对乘员舱、电池及其温差都有更好的温控效果,相比于液冷系统其制冷能效比提高0.47,整车电能消耗可降低3.1%。Aiming at the relatively independent air conditioning system,battery thermal management system and motor thermal management system of a pure electric vehicle,this paper optimizes an integrated thermal management system for battery direct cooling in summer.Firstly,a battery heat generation model is built based on the experiment,and the battery cooling mode in the battery heat management system changes from liquid cooling to more efficient refrigerant direct cooling.Then,an optimization model of one-dimensional vehicle heat management system is built and simulated under the new European driving cycle.The simulation results show that,after battery direct cooling,the vehicle thermal management system has better temperature control effect on the passenger compartment,battery and its temperature difference.Compared with the liquid cooling system,its refrigeration energy efficiency ratio increases by 0.47 and the vehicle electric consumption reduces by 3.1%.

关 键 词：整车热管理 锂离子电池建模 电池冷媒直冷 AMESIM仿真 

分 类 号：U463.81[机械工程—车辆工程]