汽车用铅酸电池PE隔板材料中PbSO_4晶体分析  

Analysis of PbSO_4 crystal in lead acid battery PE separator for vehicle starting unit after long time service

作　　者：于彭涛[1] 刘占峰[2] 于建民 

机构地区：[1]内蒙古机电职业技术学院,内蒙古呼和浩特010070 [2]内蒙古工业大学,内蒙古呼和浩特010070 [3]内蒙古锡林浩特第二发电厂,内蒙古锡林浩特026000

出　　处：《电源技术》2017年第11期1593-1595,共3页Chinese Journal of Power Sources

基　　金：内蒙古自治区高等学校科学研究基金项目(NJZC13368)

摘　　要：通过对汽车启动单元用铅酸电池PE隔板材料所生成的物质进行X射线衍射、红外光谱、电子扫描电镜等分析,证明所生成的物质为PbSO_4晶体。通过交流阻抗技术对使用前后隔板不同部位的阻抗值进行比较。结果表明,在一定的机械碰撞条件下坚硬的PbSO_4晶体可刺破隔板,并产生瞬间大电流,而此时当存在氢气和氧气时可能会引发爆炸等事故。The material was proved to have PbSO_4 crystal based on the analysis of X-ray diffraction, infrared spectrum and electron-scanning electron microscope of the material of PE separator of the vehicle starting unit. The impedance values of different parts of the separator were compared by AC impedance technique. The results show that under the conditions of certain mechanical collision, the hard PbSO_4 crystals can be punctured separator, and produce instantaneous large current, which may lead to explosion in the presence of hydrogen and oxygen.

关 键 词：铅酸电池 PE隔板材料 PbSO4晶体 阻抗值 

分 类 号：TM912[电气工程—电力电子与电力传动]