负极热性质对LFP电池热稳定性影响的模拟研究  

Simulation study on impact of anode thermal property on thermal stability of LFP cells

作　　者：杨凯[1] 卢立丽[1] 王松蕊[1] 刘兴江[1] 

机构地区：[1]中国电子科技集团公司第十八研究所化学与物理电源重点实验室,天津300384

出　　处：《电源技术》2015年第9期1828-1831,共4页Chinese Journal of Power Sources

基　　金：国家高技术研究发展计划(2014AA052201);国家电网公司总部科技项目(DG71-14-033)

摘　　要：通过对满电态LFP材料、全放电态碳材料和全放电态LTO材料的热性质分析和拟合,建立了不同负极材料的LFP电池热模拟模型,关于负极材料热性质对LFP电池热稳定性的影响进行了模拟研究,结果表明:在LFP电池中,正极LFP材料和负极碳材料或LTO材料在电解液存在下的放热反应是影响电池热安全性的主要原因;当放热量较小的LTO材料替代碳材料后,LFP电池的热稳定性增加。The thermal models of LFP cells with different anodes were developed based on the thermal characterization and calculation of full charged LFP materials, full discharged carbon and LTO materials. The impact of anode thermal property on thermal stability of LFP cells was simulated. The results show that the thermal stability of LFP cells is depended on the exothermic reactions of full charged LFP and full discharged carbon or LTO with electrolyte; when LTO releasing less heat replaces carbon material, LFP cells exhibits better thermal stability.

关 键 词：LFP电池 热模拟 热稳定性 

分 类 号：TM912.9[电气工程—电力电子与电力传动]