How are lithium safety features achieved? What is the capacity of the battery?

How are lithium safety features achieved? 1) The diaphragm 135℃ automatic shut-off protection adopts the international advanced Celgars2300PE-PP-PE three-layer composite film. When the temperature of the battery reaches 120℃, the membrane pores on both sides of the PE composite membrane are closed, the internal resistance of the battery increases, and the temperature rises inside the battery slows down. When the temperature of the battery reaches 135℃, the PP membrane pores are closed, the internal circuit of the battery is open, and the battery is no longer Increase the temperature to ensure that the battery is safe and reliable. 2) Adding additives to the electrolyte. When the battery is overcharged and the battery voltage is higher than 4.2V, the electrolyte additives polymerize with other substances in the electrolyte, the internal resistance of the battery is greatly increased, and a large-area open circuit is formed inside the battery. No longer heating up. 3) 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 score cracking and deflation. 4) Various environmental abuse testing Conduct various abuse experiments, 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 experiments and mechanical performance experiments such as vibration, drop, and impact to investigate the performance of the battery in the actual use environment. What is the capacity of the battery? The capacity of the battery is divided into the rated capacity and the actual capacity. The rated capacity of the battery refers to the stipulation or guarantee that the battery should discharge the minimum amount of electricity under certain discharge conditions during the design and manufacture of the battery. Li-ion stipulates that the battery is charged for 3 hours under the control of normal temperature and constant current (1C) and constant voltage (4.2V). The actual capacity of the battery refers to the actual amount of electricity released by the battery under certain discharge conditions, and the discharge rate is important. And temperature (so strictly speaking, the battery capacity should specify the charging and discharging conditions). Common units of capacity are: mAh, Ahu003d1000mAh). Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.