极耳排布对AGM铅炭电池性能的影响

Study on the effect of electrode lugs arrangement on the performance ofAGM lead-carbon batteries

本工作研究了极耳在同侧和对侧两种不同的排布方式组成的超细玻璃纤维棉(AGM)铅炭电池在不同电压下的充电析气量、不同充放电倍率下的充放电曲线、不同温度下的容量及深循环性能。并采用SEM和XRD对循环前后的正极活性物质进行表征分析,采用LANHE CT2001D电池循环性能测试仪对电池进行性能测试。研究结果表明,极耳的排布方式对铅炭电池的性能有较大的影响;与极耳在同侧排布方式相比,将极耳以对侧方式排布能提高电池的放电平台,同时可以延缓正极活性物质的软化,提高其循环寿命。此外,极耳对侧排布的电池在不同电压下的析氢量均低于同侧极耳电池,电压越高,析气量差异越大。研究结果为铅炭电池结构的进一步优化提供借鉴。

In this study,the charge-discharge curves,battery capacities at different temperatures,gas evolution at different voltages,and deep circulation performance of the AGM lead-carbon batteries having two different arrangement modes of electrode lugs(i.e.,same side and opposite side)are investigated.The positive active materials before and after the cycle were characterized using SEM and XRD,and a LANHE CT2001D battery cycle performance tester was used to verify the battery performance.Results show that the electrode lug arrangement considerably influences the performance of the lead-carbon batteries.When compared with the same-side arrangement,the opposite-side arrangement of the electrode lugs improves the battery's discharge platform,delays the softening of positive active materials,and increases cycle life.Additionally,the amount of hydrogen produced by the battery on the opposite side of the electrode lugs was mostly less than that produced on the same side under different voltages.The higher the voltage,the greater will be the discrepancy in gas evolution.This study will provide reference and guidance for achieving further optimization of the leadcarbon battery structure.