电池热管理系统散/加热特性研究及保温安全设计  

Battery Thermal Management System Heat Dissipation/Heating Characteristics Research and Heat Preservation Safety Design

作　　者：王振 李保国[1] WANG Zhen;LI Bao-guo(University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学,上海200093

出　　处：《包装工程》2022年第11期174-182,共9页Packaging Engineering

摘　　要：目的研究电动汽车高/低温工况下锂离子(Li-ion)电池散/加热所需时间,完善电池热管理系统(BTMS)的保温与安全设计。方法通过瞬态仿真分析微通道耦合微热管(MC耦合UMHP)式BTMS作用Li-ion电池组散热过程的动态特性,并在该BTMS结构上增加电加热辅助设计,考虑到Li-ion电池组在超低/高温工况运行时的各种不利条件,对MC耦合UMHP式BTMS增加保温与安全设计。结果在流速为3 m/s时,MC耦合UMHP式BTMS作用Li-ion电池组从初始温度314 K降温至目标温度303 K所需的时间仅为135 s,在Li-ion电池组初始温度为258 K时,加热时间近258 s,在各种工况下进行散/加热仿真实验中Li-ion电池组的最大温差始终小于5 K。结论MC耦合UMHP式BTMS对Li-ion电池散/加热所需时间少,换热效果好,温度均衡性好。The paper aims to study the time required for the Li-ion battery to dissipate/heat under the high/low tem-perature conditions of electric vehicles,and improve the insulation and safety design of the battery thermal management system(BTMS).The dynamic characteristics of the heat dissipation process of the Li-ion battery cells applied by the mi-crochannel coupled micro heat pipe(MC-UMHP)BTMS are analyzed through transient simulation,and the electric heat-ing auxiliary design is added to the BTMS structure.Taking into account the Li-ion battery cells under various unfavora-ble conditions during ultra-low/high temperature operation,heat preservation and safety design are added to MC-UMHP type BTMS.The results suggest that when the flow rate is 3 m/s,the time required for the MC-UMHP type BTMS to cool the Li-ion battery cells from the initial temperature of 314 K to the target temperature of 303 K is only 135 s.When the initial temperature is 258 K,the heating time is approximately 258 s.The maximum temperature difference of the Li-ion battery cells in the dispersion/heating simulation experiment under various working conditions is always less than 5 K.The MC-UMHP type BTMS requires less time to dissipate/heat the Li-ion battery,with good heat exchange effect and good temperature uniform.

关 键 词：锂离子电池 BTMS 微通道 微热管 安全 

分 类 号：TK172[动力工程及工程热物理—热能工程]