凝胶铅酸蓄电池热失控现象探讨  

Discussion on the thermal runaway in gel lead-acid battery

作　　者：孙小祥[1,2] 赵剑曦[2] 

机构地区：[1]黔南民族师范学院化学化工学院,贵州都匀558000 [2]福州大学化学学院胶体与界面化学研究所,福建福州350108

出　　处：《储能科学与技术》2017年第1期122-126,共5页Energy Storage Science and Technology

基　　金：福州大学与浙江超威电源有限公司合作研发的"软电解质电池项目"

摘　　要：分析了阀控式铅酸蓄电池热失控发生的原因,结合当前企业使用AGM隔板的现状,从正极析氧和隔板两个角度讨论了以气相二氧化硅为凝胶剂的凝胶电池热失控发生的可能性。结果表明,气相二氧化硅含量强烈影响了电池正极的析氧,为减小凝胶电池热失控的发生,气相二氧化硅的含量应小于5%(质量分数)。对当前使用AGM隔板的凝胶电池,由于它的大孔道,存在较大热失控的风险,为此强调开发与凝胶电池配套专用隔板的重要性,由此可实现真正意义的高质量凝胶电池。The cause of thermal runaway occurrence was analyzed. By the current situation of using AGM as separator in many factories, the possibility of the thermal runaway occurred in gel battery was discussed from two aspects of oxygen evolution from positive electrode and separator. The results showed that the content of fumed silica strongly affected the evolution of oxygen from positive electrode. To diminish the occurrence of thermal runaway in gel battery, the content of fumed silica should be less than 5%. The risk of thermal runaway was rather remarkable when AGM was used as separator in gel battery, which was attributed to its large pores. The importance was emphasized for the development of special separator used in gel battery, by which real and high quality gel battery can be achieved.

关 键 词：凝胶电池 热失控 专用隔板 气相二氧化硅 

分 类 号：TM912.4[电气工程—电力电子与电力传动]