泡沫铅板栅的比表面积对铅酸电池性能的影响  

Influence of specific surface area of foam lead grid on performance of lead acid batteries

作　　者：沈浩宇 陈理 王冰冰 王鹏伟 周志学 SHEN Haoyu;CHEN Li;WANG Bingbing;WANG Pengwei;ZHOU Zhixue(Chaowei Power Co.Ltd.,Changxing 313100,Zhejiang,China)

机构地区：[1]超威电源集团有限公司,浙江长兴313100

出　　处：《储能科学与技术》2020年第3期856-860,共5页Energy Storage Science and Technology

摘　　要：本工作以聚氨酯泡沫为原材料,经玻璃炭化后制成的泡沫铅板栅具有比普通板栅高几十倍的比表面积。通过对聚氨酯泡沫基材孔数和正极泡沫板栅镀铅量的对比实验,优化筛选出聚氨酯泡沫基材孔数为15 PPI,正极板栅镀铅量为20 g的工艺方案。优选方案制成的泡沫铅正板栅比表面积为19.1 cm^2/cm^3,镀层厚度为39.1μm;相对的泡沫负板栅比表面积为33.1 cm^2/cm^3,镀层厚度为13.3μm。泡沫板栅具有提升活性物质利用率,提高铅酸电池比能量的特性,且制成的电动助力车电池大电流放电性能和循环寿命都能满足国家标准的要求。The specific surface area of a vitrified lead-foam grid formed from polyurethane foam as the raw material was several tens of times higher than that of a common grid. After comparing the performances of different number of holes in a polyurethane foam substrate and different amounts of lead plated on the positive foam, the technological scheme was optimized as polyurethane foam substrate with a hole density of 15 PPI and 20 g lead plated on a positive grid. Under the optimized scheme, the specific surface area and coating thickness of the positive lead-foam grid were 19.1 cm^2/cm^3 and 39.1 μm, respectively, and those of the corresponding negative lead-foam grid were 33.1 cm^2/cm^3 and 13.3 μm, respectively. The foam grid can improve the utilization of active material and the specific energy of lead acid batteries. Moreover, the high rate discharge performance and cycle life of electric moped batteries with the foam grid can meet the requirements of national standards.

关 键 词：泡沫铅 板栅 比表面积 比能量 

分 类 号：TM912[电气工程—电力电子与电力传动]