摘要
目的解决传统热管理系统中锂离子电池组在充放电过程中温度过高、温差过大等问题。方法以液冷方式为主要手段,在传统蛇形冷却通道的基础上设计1种单流入单流出的微通道结构和2种双流入单流出的微通道结构,并采用新型高导热材料石墨烯薄膜作为散热辅助材料。基于有限元仿真软件从电池组的最高温度、温差、温升和流体压力4个角度进行比较分析。结果优化后电池组的最高温度由36.4℃降至36℃,温差由8.7℃降至3.9℃,电池组的散热能力及温度一致性得到提高。结论双流入单流出结构优于单流入单流出结构,其中双波纹蛇形为最佳的液冷微通道结构,石墨烯薄膜的采用可进一步提高电池组的温度一致性。
The work aims to solve the problems of high temperature and large temperature difference of lithium-ion battery pack in the traditional thermal management system during the charging and discharging process.The liquid cooling method was taken as the main means to design a single-inflow and single-outflow microchannel structure and two double-inflow and single-outflow microchannel structures on the basis of the traditional serpentine cooling channel,and a new type of high-thermal-conducting material,graphene film,was adopted as the auxiliary heat dissipation material.Based on the finite element simulation software,a comparative analysis was carried out from four perspectives:maximum temperature,temperature difference,temperature rise and fluid pressure of the battery pack.The maximum temperature of the optimized battery pack was reduced from 36.4℃to 36℃,and the temperature difference was reduced from 8.7℃to 3.9℃,which improved the heat dissipation capability and temperature consistency of the battery pack.The double-inflow and single-outflow structure is better than the single inflow-single outflow structure,in which the double corrugated serpentine is the optimal liquid-cooling microchannel structure,and the adoption of graphene film can further improve the temperature consistency of the battery pack.
作者
刘岩
肖纯
沈国鑫
李锦
张少睿
LIU Yan;XIAO Chun;SHEN Guoxin;LI Jin;ZHANG Shaorui(School of Automation,Wuhan University of Technology,Wuhan 430070,China;National Energy Key Laboratory for New Hydrogen-ammonia Energy Technologies(Foshan Xianhu Laboratory),Guangdong Foshan 528200,China)
出处
《包装工程》
CAS
北大核心
2024年第1期307-314,共8页
Packaging Engineering
基金
先进能源科学与技术广东省实验室佛山分中心(佛山仙湖实验室)开放基金(XHD2020-003)。
关键词
锂离子电池组
液冷式
双波纹蛇形
石墨烯薄膜
lithium-ion battery pack
liquid cooling
double corrugated serpentine
graphene film
