With the continuous development of new energy technology, the demand for energy storage equipment in the industrial and commercial field is increasing. As a new type of energy storage equipment, modular energy storage cabinet has the advantages of high efficiency, flexibility and scalability, and is widely used in distributed energy, data centers, communication base stations and other fields. However, with the popularization of its application, the issue of fire safety has become increasingly prominent. Therefore, it is very important to develop a set of scientific and effective fire protection schemes to ensure the safe operation of modular energy storage cabinets.
1. Fire hazard of modular energy storage cabinets.
1.High energy density: The modular energy storage cabinet uses high energy density cells, once a fire occurs, the fire is fast, the burning time is long, and a large amount of toxic gas and heat are released.
2.The fire spreads quickly The internal cells of the energy storage cabinet are combined in series and parallel, and it is easy to spread to the entire cabinet when the fire occurs.
3.Difficult to extinguish fire: The complex electrical connection inside the energy storage cabinet and the high-temperature and high-pressure working environment have extremely high requirements for fire extinguishing equipment and personnel operation.
2. In view of the fire hazard of modular energy storage cabinets, Qianye Technology has formulated the following schemes:
1. Each energy storage cabinet is used as a protection area, and two levels of protection are set up - package-level protection and cabinet-level protectionAmong them, the pack-level protection adopts a two-in-one composite detector as a detection device placed in each battery pack to detect the combustible gas concentration and temperature in the pack, and a puncture valve and a pack-level sprinkler are set on each pack, and the two-in-one composite detector is electrically connected with the cabinet-type energy storage non-storage pressure extinguishing device, and corresponds to the control command of the puncture valve.
2. The outlet of the cabinet-type energy storage non-storage pressure fire extinguishing device is connected to the puncture valve through the high-pressure hose and quick-insertion pipe fittings, once a battery pack has thermal runaway, the two-in-one detector will transmit the alarm signal to the cabinet-type energy storage non-storage pressure fire extinguishing device, and open the corresponding puncture valve, the cabinet-type energy storage non-storage pressure fire extinguishing device will start, and the perfluorohexanone fire extinguishing agent will directly act on the runaway battery pack through the quick pipe circuit and the pack-level sprinkler.
3. The cabinet-level protection adopts passive protection, through the combination of non-storage perfluorohexanone fire extinguishing device and temperature-sensing magnetic power generation components, once the temperature in the cabinet exceeds the starting temperature of temperature-sensing magnetic power generation, the temperature-sensing magnetic power generation component will send out a pulse current to start the non-storage perfluorohexanone fire extinguishing device in the cabinet, carry out full flooding protection for the energy storage cabinet, and feedback the starting signal to the cabinet-type energy storage non-storage pressure fire extinguishing device.
To sum up, the fire protection scheme for industrial and commercial modular energy storage cabinets needs to start from many aspects, including improving the fire performance of the equipment itself, strengthening fire monitoring and alarm, equipping suitable fire extinguishing equipment, establishing an emergency response mechanism, strengthening safety supervision, developing new technologies and equipment, and establishing an information sharing platform.
Thousand-page technology application case diagram: