摘要
储能是实现双碳目标的重要支撑技术,以锂离子电池为能量载体的电化学储能在国家大力扶持下迅猛发展。但锂离子电池包散热效果不佳导致寿命衰减、热失控等问题成为了储能系统大规模推广的关键瓶颈。针对这一问题,基于280 Ah锂离子电池包提出了3种不同工艺的液冷散热结构,详述了液冷流道、电池包结构方案,并应用ANSYS软件进行热流场分析。通过对比挤压铝型材(design-1)、冲压钎焊铝板(design-2)、口琴管(design-3)等3种流道方案的综合热力表现,得出3种工艺冷板都满足锂离子电池散热要求,且其中冲压钎焊铝板(design-2)散热效果最佳的结论。最后对冲压钎焊铝板散热方案进行实测,实测数据满足仿真结果,可为锂离子电池包液冷散热工艺方案选择提供参考。
The energy storage was an important supporting technology for achieving the dual carbon goal,and electrochemical energy storage using lithium-ion batteries as energy carriers has been rapidly developing with strong national support.However,the poor heat dissipation effect of lithium-ion battery packs has become a key bottleneck for the large-scale promotion of energy storage systems,which leaded to issues such as lifespan degradation,thermal runaway and so on.In response to this issue,it was proposed that three different liquid cooling heat dissipation structures for 280 Ah lithium-ion battery packs,and we presented the liquid cooling channel and battery pack structure schemes in details.By using ANSYS software,we analyzed the heat flow field.By comparing the comprehensive thermal performance of three flow channel schemes,that was extruded aluminum profile(design-1),stamped brazed aluminum plate(design-2),and harmonica tube(design-3),it was concluded that all three process cold plates met the heat dissipation requirements of lithium-ion batteries,and the stamped brazed aluminum plate(design-2)had the best heat dissipation effect.Finally,the heat dissipation scheme for stamping and brazing aluminum plates was tested,and the measured data met the simulation results,which provided reference for the selection of liquid cooling and heat dissipation process schemes for lithium-ion battery packs.
作者
于丽阳
李仲夏
董世奇
李晶晶
李鹏浩
YU Liyang;LI Zhongxia;DONG Shiqi;LI Jingjing;LI Penghao(XJ Electric Power Energy Storage Technology Co.,Ltd.,XJ Group Co.,Ltd.,Xuchang 461000,China)
出处
《新技术新工艺》
2024年第6期54-61,共8页
New Technology & New Process
关键词
锂离子电池
电池包
结构设计
ANSYS仿真
lithium-ion batteries
battery packs
structure design
ANSYS simulation
