木素磺酸钠对铅酸电池低温性能影响详探

The detailed investigation of the effects of sodium lignosulfonate on the low temperature performance of lead-acid battery

本文从多角度研究了木素磺酸钠(SLS)对电池性能的影响,详细比较了未加木钠及添加木钠的电池在低温容量、充电接受能力、不同温度下的1C高倍率放电性能等方面的差异;研究了放电电流及常温循环次数对两种电池低温容量的影响。实验结果表明,木钠能显著改善电池的低温性能,尤其是低温高倍率性能;随着放电电流和循环次数的增加,不加木钠的电池低温放电容量衰减较为严重;室温循环80次后,无木钠电池的低温容量衰减率达30%,比添加木钠的电池衰减率高出20%。

The effects of sodium lignosulfonate（SLS） on the performance of lead-acid battery were studied in many aspects. The low-temperature capacity, charge acceptance, 1C high rate discharge performance in different temperature were measured, the results were compared with the cells without SLS in detail, and the impacts of discharge current and cycle numbers on the low-temperature capacity were also explored. The results showed that the addition of SLS could improve the lowtemperature performance of cells, especially the high rate discharge performance, with the increase of discharge current and cycle numbers, the discharge capacity of the cell without SLS in lowtemperature declined dramatically, and the rate of capacity decay of the cell without SLS was 30 %, which was 20 % more than that of the cells with SLS after 80 cycles at room temperature.