梯次利用阀控式铅酸电池过充安全特性

doi:10.16265/j.cnki.issn1003-3033.2020.04.003

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (4): 14-20.doi: 10.16265/j.cnki.issn1003-3033.2020.04.003

梯次利用阀控式铅酸电池过充安全特性

吴静云¹ 高级工程师, 侍成¹ 工程师, 郭鹏宇², 姚丽娟¹, 孙宜听³, 金阳^**3 副教授

1.国网江苏省电力有限公司经济技术研究院, 江苏南京 210008;
2.国网江苏省电力有限公司,江苏南京 210024;
3.郑州大学电气工程学院, 河南郑州 450001

收稿日期:2020-01-11 修回日期:2020-03-03 出版日期:2020-04-28 发布日期:2021-01-27
通讯作者: **金阳(1989—),男,河南洛阳人,博士,副教授,主要从事电化学储能电站安全性和电池储能技术方面的研究。E-mail:yangjin@zzu.edu.cn。
作者简介:吴静云(1989—),女,江西乐平人,博士,高级工程师,主要从事储能消防技术方面的研究。E-mail:673112739@qq.com。
基金资助:
国家自然科学基金资助(51807180);国网江苏省电力有限公司科技项目(J2019007)。

Overcharging safety characteristics of retired VRLA

WU Jingyun¹, SHI Cheng¹, GUO Pengyu², YAO Lijuan¹, SUN Yiting³, JIN Yang³

1. Economic Research Institute, State Grid Jiangsu Electric Power Co., Ltd., Nanjing Jiangsu 210008, China;
2. State Grid Jiangsu Electric Power Co., Ltd., Nanjing Jiangsu 210024, China;
3. School of Electrical Engineering, Zhengzhou University, Zhengzhou Henan 450001, China

Received:2020-01-11 Revised:2020-03-03 Online:2020-04-28 Published:2021-01-27

摘要/Abstract

摘要： 为解决梯次利用阀控式铅酸电池(VRLA)过充引发的电池温升、产气和失效问题,在真实电池舱中对8个并联、额定参数为12 V/20 Ah的VRLA恒流过充,充电倍率为0.17 C(27 A)。结果表明:过充后169、189、209 s依次产生H₂、SO₂、CO,过充33 min后产生烃类气体;梯次利用VRLA模组存在极限充电电压17.6 V,模组电压达到这一数值后内部电解水等反应加剧;热仿真温度曲线显示出模组内外部温差可达40 ℃,且模组长时间过充后各单体温差明显,最大温差达30 ℃。此外,梯次利用VRLA过充后未发生明显形变、燃烧,但监测H₂浓度变化可对电池过充等异常状态进行有效预警。

关键词: 梯次利用, 阀控式铅酸电池(VRLA), 电池模组, 过充, 安全性

Abstract: In order to solve problems of battery temperature rise, gas generation and failure caused by overcharged VRLA, an experiment was conducted on a module composed of 8 VRLA cells in parallel with rated parameter of each cell at 12 V/160 Ah, and it was overcharged at constant current of 0.17 C (27 A). The results show that H₂, SO₂, and CO are generated in sequence 169, 189, and 209 s after overcharge while hydrocarbon gas is generated at 33 minutes. 17.6 V is the maximum charging voltage for retired VRLA batteries, and once it is reached, internal electrolytic water as well as other reactions will be intensified. According to thermal simulation temperature curve, internal and external temperature difference of the module can be 40 ℃ while temperature difference of each cell can also be significant after overcharge for a long time with a maximum gap of 30 ℃ . In addition, retired VRLA does not cause obvious deformation and combustion after overcharging. But abnormal status of batteries, like overcharging, can be warned by monitoring concentration variation of H₂.

Key words: reutilization, valve-regulated lead acid battery (VRLA), battery module, overcharge, safety

中图分类号:

X946

吴静云, 侍成, 郭鹏宇, 姚丽娟, 孙宜听, 金阳. 梯次利用阀控式铅酸电池过充安全特性[J]. 中国安全科学学报, 2020, 30(4): 14-20.

WU Jingyun, SHI Cheng, GUO Pengyu, YAO Lijuan, SUN Yiting, JIN Yang. Overcharging safety characteristics of retired VRLA[J]. China Safety Science Journal, 2020, 30(4): 14-20.

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梯次利用阀控式铅酸电池过充安全特性

Overcharging safety characteristics of retired VRLA

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