锂电池储能电站防消一体化系统设计及控制策略

面向锂电池储能电站的安全需求,遵循“预防为主、防消结合”的原则,设计锂电池储能电站防消一体化系统,实现数据融合和智能诊断,建立早期预警、后期灭火防护的完整系统;参照实际储能预制舱结构,搭建储能预制舱试验环境,开展锂电池单体及模组热失控及灭火试验,结果表明：防消一体化系统控制策略通过安全预警、防护、消防系统的分级工作,实现了火灾早期预警以及后期灭火防护,最大程度降低了电池热失控带来的危害;以细水雾作为灭火介质能在短时间内熄灭磷酸铁锂电池火灾,并能有效防止电池复燃。

DESIGN AND CONTROL STRATEGY OF INTEGRATED SYSTEM OF EARLY WARMING AND FIRE PROTECTION FOR LITHIUM-ION BATTERIES ENERGY STORAGE POWER STATION

In order to meet the safety requirements of lithium-ion batteries energy storage power station, the integrated system of early warning and fire prevention was designed according to the principle of“prevention first, prevention and elimination combined”. The integrated system realized data fusion and intelligent diagnosis, and established a complete system of early warning and late fire prevention. Take the prefabricated compartment structure of actual energy storage power station as reference, the prefabricated compartment test platform was set up to conduct thermal runaway and fire extinguishing tests of lithium-ion batteries and modules. The results showed that control strategy of the integrated system implement early warning and later fire protection of the fire through the hierarchical working steps of safety warning, protection and fire fighting in order to minimize the damage caused by the thermal runaway. In addition, using water mist as the extinguishing medium can extinguish the fire of lithium iron phosphate batteries in a short time and effectively prevent the batteries from reburning.