Energy storage fire-fighting lithium battery** is a safety issue that has attracted much attention in recent years. Due to the characteristics of lithium battery with high energy density, high voltage and flammability, once the fire is high, it is difficult to extinguish. Therefore, effective fire extinguishing methods are essential to ensure the safety of personnel and the value of property.
Due to the high temperature generated by lithium batteries, in order to prevent the fire from expanding and re-ignishing, it is necessary to continuously cool the ** part. Large amounts of water or other non-conductive fire extinguishing agents can be used for cooling, but be careful not to allow water or other liquids to come into contact with the electrodes or wiring of the battery, which may cause a risk of electric shock.
The automatic fire extinguishing device for lithium-ion battery energy storage system is an efficient, convenient and environmentally friendly automatic fire extinguishing device developed for lithium-ion battery energy storage system. The device uses perfluorohexanone as the fire extinguishing medium, which can effectively extinguish the fire, cool down and suppress the re-ignition for up to 24 hours.
Perfluorohexanone is a liquid at room temperature, because its heat of evaporation is only 1 25 times that of water, and the vapor pressure is 25 times that of water, these properties make it easy to vaporize and exist in a gaseous state and can rely on heat absorption to achieve a good fire extinguishing effect. At the same time, perfluorohexanone has almost no corrosiveness to conventional metals and circuits, and can efficiently extinguish fires, cool down, inhibit re-ignition while minimizing the damage of lithium-ion batteries.
The fire extinguishing agent is stored in a storage container, which is equipped with a siphon, a container valve, a pressure sensor, and nitrogen pressurization. When the controller receives the start command, the driving device outputs the start command, and the driving device opens the container valve, and the fire extinguishing agent is sprayed out through the siphon, container valve, pipeline, pipe fittings and sprinkler head. At the same time, the signal feedback device feeds back the action information of the fire extinguishing device to the controller. The pressure sensor detects the pressure inside the storage vessel in real time.
Application scenarios of lithium battery energy storage fire extinguishing device: power grid side, user side, and new energy side.