KETEP 세계에너지시장정보

1. A fire-fighting method for a containerized lithium-ion battery energy storage system, characterized in that: comprising: 1) The primary response is the early warning of thermal runaway inside the battery module, and the fire fighting and rapid cooling of the single battery; the main function of the primary response is to quickly release the fire extinguishing agent to suppress the battery open fire when a fire occurs in the single battery in the battery module, and reduce the battery temperature through the synergy of the fire extinguishing agent and the emergency liquid cooling system to prevent thermal runaway from spreading in the battery module. The first-level response is mainly composed of an early warning system in the battery module, a fire detection and extinguishing system, and an emergency liquid cooling system; after the thermal runaway of the battery in the battery module, the jet fire released fuses the fire detection tube, and the fire detection and fire extinguishing system releases the pre-filled fire extinguishing agent. At this time, the early warning module in the battery module receives an abnormal signal and sends it to the microcontroller, the emergency liquid cooling system receives the signal from the microcontroller, and the liquid in the liquid cooling system begins to circulate rapidly, taking away the heat after the battery thermal runaway; 2) The secondary response is fire warning, fire extinguishing and rapid cooling of multiple batteries in the energy storage cabinet; the main function of the secondary response is that when the primary response does not effectively suppress the spread of fire in the module, a large-scale thermal runaway occurs in the energy storage battery cabinet. At this time, the water mist fire extinguishing system is activated to extinguish the open fire in the battery cabinet and quickly cool the battery; the secondary response is mainly implemented by a device composed of an early warning system and a water mist fire extinguishing system; the secondary warning module located in the battery cabinet detects that the warning factor exceeds the preset threshold, the warning module sends a signal to the microcontroller, and after the microcontroller receives the control signal, the water pump is turned on, the water mist fire extinguishing system is turned on, and the water mist nozzles located on each floor of the battery cabinet are turned on to quickly extinguish the fire and cool down the fire area; 3) The third-level response is the suppression of fire spread among energy storage containers; if the energy storage container is located in the building, the early warning module will send a signal to start the water spray and water curtain system in the building after detecting that the warning factor exceeds the threshold to prevent the fire from propagating to the adjacent energy storage units; if the container is placed in the open air, after the early warning module detects that the warning factor exceeds the threshold, it will send a control signal to open the lower moving track of the energy storage container, and move the energy storage unit adjacent to the fire container to the direction away from the fire source; the method is implemented by a fire protection system comprising an automatic fire extinguishing system and an early warning system; the automatic fire extinguishing system includes a fire detection and fire extinguishing system, a water mist fire extinguishing system, a water spray fire extinguishing system and a water curtain fire extinguishing system; the early warning system is mainly a three-level fire early warning system, which is the thermal runaway early warning module in the battery module as the primary early warning module, the battery cabinet fire early warning module in the container as the secondary early warning module, and the container box fire early warning module as the tertiary early warning module; the battery thermal runaway warning module in the module and the fire warning module of the battery cabinet in the container include a volatile organic compound (VOC) detection module, a smoke detection module, and a CO detection module; the container box fire warning module includes a temperature detection module, a deformation detection module, and a smoke detection module; the emergency liquid cooling system is mainly composed of a liquid cooling plate, a liquid cooling pipeline and a water pump; the emergency liquid cooling system is connected to the early warning system through a battery management unit (BMU); the liquid cooling plate of the emergency liquid cooling system is placed at the bottom of the battery module, and its thickness is extremely small, which can minimize the impact of the liquid cooling system on the energy density of the battery module; the fire detection and fire extinguishing system used inside the battery module can release two clean and efficient fire extinguishing agents to achieve the dual purpose of extinguishing the fire and controlling the temperature of the battery; heptafluoropropane and perfluorohexanone are high-efficiency and clean gas fire-extinguishing agents as the fire-extinguishing medium of the fire detection and fire-extinguishing system inside the battery module; the fire-extinguishing agent is stored in the storage tank; the amount of fire-extinguishing agent should be based on the volume of the enclosed space of the battery module and the design concentration of fire-extinguishing calculation; water mist nozzles are installed on each layer of the container battery cabinet. When thermal runaway spreads between the battery cabinet modules, the water mist fire extinguishing system is activated to quickly extinguish and cool the battery; when the fire spreads between the energy storage containers, the spread of fire between energy storage containers can be suppressed by increasing the distance between energy storage containers or opening water spray and water curtain systems.