How to improve the safety of power lithium battery packs?

Judging from the findings of many new energy vehicle fire accidents in recent years, most of the accidents are caused by problems with the entire power lithium-ion battery system rather than individual battery quality defects. Therefore, it is particularly necessary to improve and deal with the safety issues of the power lithium battery pack from the perspective of the power lithium ion battery system. The safety of power lithium battery packs cannot be ignored. Lithium battery companies and OEMs with product quality problems will be eliminated. A series of new energy fire accidents have severely hit the new energy automobile industry. The entry of a batch of companies with defects in product quality and technology into the market has adversely affected the industry. Under this circumstance, government departments have begun to rectify the undesirable phenomena, and carry out key investigations on batteries and vehicles with quality problems, which will help reduce the risk of fires in new energy vehicles. Under this pressure, OEMs and lithium battery manufacturers will further improve the quality of their products, and some companies that do not have competitive advantages will also be eliminated. New energy vehicles are entering the fast lane, and safety technology cannot be derailed. Electric vehicle safety technology covers three parts: power lithium-ion battery, complete vehicle and charging infrastructure. In the safety technology of electric vehicles, since the power lithium ion battery itself is a high-energy carrier, without external energy input, it can cause huge destructive power due to the abnormal release of energy. Therefore, the safety of the power lithium battery pack is electric. Vehicle safety technology is the top priority. The safety of power lithium battery packs includes: structural safety, electrical safety, thermal safety, chemical safety, environmental safety, three-proof safety, and life cycle safety. Industry research believes that out of considerations for the safety of electric vehicles, the safety of power lithium battery packs should be improved first, and the technical means to improve safety include the technology of improving the safety of single cells. Such as material safety, transformation processes, and new protection measures; secondly, improve the safety of power lithium-ion battery packs, such as integration, modular technology and packaging technology; in addition, improve the safety of power lithium battery pack systems, such as the use of advanced BMS technology, thermal management system, configuration technology, protection system design and protection circuit, etc. The market's safety requirements and performance requirements for lithium battery packs are the driving force for the development of batteries. Lithium battery processing manufacturers must continue to promote the advancement of lithium battery material technology research and development and processing and manufacturing to improve the safety of lithium batteries. As the energy density and performance of power lithium-ion batteries continue to improve, safety has also become a topic of concern and controversy. Correctly facing and actively exploring some new safety technologies will help promote the advancement of lithium battery technology, such as improving the thermal stability of the material interface, developing self-excited thermal protection technology for monomers, and system thermal expansion prevention technology, which can effectively improve The safety of the battery system. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: The use of aluminum foil in lithium batteries and analysis of its advantages