Discussion on the thermal runaway in gel lead-acid battery

doi:10.12028/j.issn.2095-4239.2016.0046

Abstract

Abstract: 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.

Key words: gel battery, thermal runaway, special separator, fumed silica

SUN Xiaoxiang1,2, ZHAO Jianxi2. Discussion on the thermal runaway in gel lead-acid battery[J]. Energy Storage Science and Technology, 2017, 6(1): 122-126.

References

[1] RAND D A J, MOSELEY P T, GARCHE J, et al. Valve-regulated lead-acid batteries[M]. Amsterdam: Elsevier, 2004.

[2] HU J, GUO Y, ZHOU X. Thermal runaway of valve-regulated lead-acid batteries[J]. Journal of Applied Electrochemistry, 2006, 36(10): 1083-1089.

[3] CULPIN B. Thermal runaway in valve-regulated lead-acid cells and the effect of separator structure[J]. Journal of Power Sources, 2004, 133(1): 79-86.

[4] CATHERINO H A. Complexity in battery systems: Thermal runaway in VRLA batteries[J]. Journal of Power Sources, 2006, 158(2): 977-986.

[5] 纪化成, 赵晓兰. 阀控式铅酸蓄电池的热失控[J]. 蓄电池, 1997 (1): 24-26.

JI Huacheng, ZHAO Xiaolan. The thermal runaway in VRLAB[J]. Chinese LABAT Man, 1997(1): 24-26.

[6] 杭瑚, 张立新, 黄志刚, 等. 阀控式铅酸蓄电池中的氧循环与热失控现象[J]. 蓄电池, 1997(2): 3-7.

HANG Hu, ZHANG Lixin, HUANG Zhigang, et al. The closed oxygen cycle and the phenomenon of thermal runaway in valve-regulated lead-acid batteries[J]. Chinese LABAT Man, 1997 (2): 3-7.

[7] 孙成. 阀控铅酸蓄电池热失控及其对策[J]. 蓄电池, 2003(3): 134-136.

SUN Cheng. A review of thermal runaway in VRLA battery and countermeasures[J]. Chinese LABAT Man, 2003(3): 134-136.

[8] 从志贤, 付艳玲. 固定型阀控式铅酸蓄电池热失控现象浅析[J]. 蓄电池, 2005(1): 10-14.

CONG Zhixian, FU Yanling. Discussion on the thermal runaway in VRLA batteries[J]. Chinese LABAT Man, 2005(1): 10-14.

[9] SUN X X, ZHAO J X, CHEN T X, et al. Colloidal particle size of fumed silica dispersed in solution and the particle size effect on silica gelation and some electrochemical behaviour in gelled electrolyte[J]. Journal of Solid State Electrochemistry, 2016, 20(3): 657-664.

[10] BERNDT D. Valve-regulated lead-acid batteries[J]. Journal of Power Sources, 2001, 100(1/2): 29-46.

[11] BERNDT D. Valve-regulated lead-acid batteries[J]. Journal of Power Sources, 2001, 95(1/2): 2-12.

[12] MISRA S S, MRAZ S L, DILLON J D, et al. VRLA battery with AGM-gel hybrid for superior performance[C]//Telecommunications Energy Conference, Piscataway: IEEE Press, 2003: 378-382.

[13] KRAMM F, NIEPRASCHK H. Encyclopedia of electrochemical power sources[M]. Amsterdam: Elsevier, 2009.

[14] TANTICHANAKUL T, CHAILAPAKUL O, TANTAVICHET N. Gelled electrolytes for use in absorptive glass mat valve-regulated lead-acid (AGM VRLA) batteries working under 100% depth of discharge conditions[J]. Journal of Power Sources, 2011, 196(20): 8764-8772.

[15] 赵剑曦, 岳斌, 孙小祥. 关于AGM-GEL混用的讨论[J]. 蓄电池, 2015, 52(6): 295-298.