摘要
锂离子电池因为具有能量密度高、输出电压高、自放电低等优点被广泛应用于电动汽车。但电池组因为在充放电时的电流过大,电池箱内空间结构紧密以及工况环境恶劣等因素都会导致电池组温度过高及温度不均匀,这就会严重降低锂电池的性能,缩短电池组的使用寿命。因此锂离子电池组的散热系统及温度控制成为保障新能源动力稳定的重要环节。本文首先阐述了锂离子电池的发热机理,然后分析了电池组的强制风冷散热的特性。
Lithium-ion batteries are widely used in electric vehicles because of their high energy density,high output voltage and low self-discharge.However,the excessive current during charging and discharging,the tight space structure in the battery box and the harsh working environment will lead to the excessive and uneven temperature of the battery pack,which will seriously reduce the performance of the lithium battery and shorten the service life of the battery pack.Therefore,the heat dissipation system and temperature control of lithium-ion battery pack become an important link to ensure the stability of new energy power.In this paper,firstly,the heating mechanism of lithium ion battery is described,and then the characteristics of forced air cooling heat dissipation of battery pack are analyzed.
作者
杨永贵
YANG Yong-gui(Liuzhou City Vocational College,Liuzhou 545036,China)
出处
《内燃机与配件》
2022年第6期191-193,共3页
Internal Combustion Engine & Parts
基金
2020年度广西高校中青年教师科研基础能力提升项目《基于区域性电动汽车动力电池散热系统研究及改进策略》(编号:2020KY4711)。
关键词
动力锂电池
电池热管理
风冷散热
power lithium battery
battery thermal management
air cooling heat dissipation
