"The sudden explosion of the power station in the north area could be explained by the safety accident induction mechanism of lithium batteries, which is the thermal failure of the batteries in the extreme conditions when they were significantly affected by internal and external sources.
According to the investigation report, it is determined that the cause of the fire accident of the energy storage system is the excessive voltage and current caused by the surge effect during the system recovery and startup process, and it is not effectively protected by the BMS system.
The energy storage system lacks effective protective measures, it may cause the expansion of battery accidents. If the energy storage device is arranged indoors, when the flammable gas reaches a certain concentration, it will explode in case of a naked fire, and more serious situation is the chain explosion accident.