How to realize the safety features of lithium ion?

a. The diaphragm automatically shuts off protection at 135°C and adopts the international advanced Celgars2300PE-PP-PE three-layer composite film. When the temperature of the battery reaches 120°C, the membrane pores on both sides of the PE composite film are closed, the internal resistance of the battery increases, and the internal temperature of the battery slows down. When the temperature of the battery reaches 135°C, the PP film hole is closed, the internal circuit of the battery is open, and the battery no longer heats up, ensuring the safety and reliability of the battery. b. Adding additives to the electrolyte. Under the condition that the battery is overcharged and the battery voltage is higher than 4.2V, the electrolyte additives will polymerize with other substances in the electrolyte, and the internal resistance of the battery will increase significantly, and a large-area open circuit will be formed inside the battery. No longer heating up. c. Battery cover composite structure The battery cover adopts a scored explosion-proof ball structure. When the battery heats up, part of the gas that occurs during the internal activation of the battery expands, the internal pressure of the battery increases, and the pressure reaches a certain degree of scores and breaks and deflates. d. Various environmental abuse detections Conduct various abuse tests, such as external short circuit, overcharge, acupuncture, impact, incineration, etc., to investigate battery safety performance. At the same time, the battery is subjected to temperature shock tests and mechanical performance tests such as vibration, drop, and impact to investigate the performance of the battery in the actual use environment. 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: General knowledge about explosion-proof lithium battery safety and explosion types