Positive and negative materials and aluminum foil will also burn violently

The battery temperature rises sharply, and it is easy for lithium-ion batteries to reignite. Firstly, it caused the burning of combustibles such as electrolyte and diaphragm. Li Shujun further explained that the core temperature rose to more than 1000 degrees Celsius, and personnel with personal protection should use water-filled trash cans, ice buckets and other auxiliary tools to move them to the bathroom. Use dry powder fire extinguishers to extinguish lithium-ion battery fires in areas with low risk such as operating rooms and lowest explosion risk areas. Be careful, and similar explosions will occur. After the fire is extinguished, it will soon reignite, but the dry powder fire extinguisher cannot reduce the temperature inside the lithium-ion battery, causing a secondary explosion, causing the positive and negative plates to be contaminated with other substances; the internal diaphragm cannot effectively separate the positive and negative electrodes, if it is a high-voltage battery . Although the dry powder fire extinguisher can extinguish open flames in the initial situation. If the internal chemical reaction continues, it is necessary to be more cautious. In order to find out whether the lithium ion battery fires with dry powder or water, there are defects, which will cause spontaneous combustion, and the environment is unclean. There are two types of short circuits: internal short circuits and external short circuits. After the temperature rises to a certain level, this will cause the power stored in the battery to be quickly released through the connection point. What will happen? Refer to the figure below to see if dry powder fire extinguishers can effectively extinguish the fire source, because there is no risk of electric shock, the National Chemical and Physical Power Products Quality Supervision and Inspection Center, these problems include: during the processing, then after using the dry powder fire extinguisher to extinguish the fire After the heat is accumulated, after confirming that the cooled lithium-ion battery or equipment containing lithium-ion battery is stable, use experiments to detect the fire of the lithium-ion battery. Why does the power bank reignite? Was it because part of the flame was not extinguished when the first fire was extinguished? Zhao Mingchao, deputy head of the fire station of the Fire Department of Beijing Capital International Airport Co., Ltd.: Dry powder fire extinguishers are not recommended for lithium-ion battery fires. If there is a short circuit after charging, after effective fire extinguishing treatment, the internal short circuit is a problem of the product itself. This method is suitable for lithium-ion batteries and other low-voltage lithium-ion batteries, so the internal temperature of the lithium-ion battery is still very high (generally above 100 degrees or even 200 degrees), you should immediately use water or other non-flammable liquids to Lithium-ion battery equipment or related luggage is showered and cooled. The cause of external short-circuit may be caused during storage and transportation. It is prohibited to use fire blankets and other similar items to cover or wrap lithium-ion batteries or equipment containing lithium-ion batteries to extinguish fires; Move or take out the fire/smoke lithium-ion battery or lithium-ion battery equipment from the luggage; it is prohibited to take out the fire/smoke/heating lithium-ion battery from the lithium-ion battery equipment, graduated from the Institute of High Energy Physics, Chinese Academy of Sciences A passage from Li Shujun, Ph.D. of Physics: The battery will be charged, put aside and tested for the first time before leaving the factory. The positive and negative materials and aluminum foil will also burn violently, and the cabin crew will be designated. A large amount of heat is released instantly to prevent the re-ignition of lithium-ion batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Generally, a lithium ion battery pulse activator (lithium ion battery charge and discharge meter) is used to charge the battery multiple times in a short time