What are the main reasons for the life decay of lithium iron phosphate batteries

1. The internal resistance of the lithium battery pack, especially the inconsistency of the polarization internal resistance, causes the voltage of individual batteries to change drastically during the charging and discharging process, resulting in drastic changes in the entire battery pack; 2. The inconsistency of the voltage of the single ultra-thin battery will cause Affect the peak shaving ability of the battery pack, and reduce the energy released by the overall lithium battery pack; 3. Due to the exothermic and endothermic processes of ultra-thin batteries during operation, the battery temperature will continue to change. When overheated, it will cause performance degradation and Safety hazards. Facts have proved that the fuse of electric vehicle operation and fire detection in recent years is caused by insufficient over-temperature protection to cause battery heating and fire. The battery types include not only lithium manganate, but also lithium iron phosphate battery packs; 4 , Capacity is the most serious factor in discreteness. Inconsistent capacity will cause performance problems in two aspects. One is that some lithium iron phosphate battery packs will be overcharged and overdischarged, leading to unsafe factors such as combustion and explosion, and the other is low. Because the capacity single battery ends work early, the energy of other single batteries in the entire ultra-thin battery pack cannot be completely released, which causes the life of the entire lithium battery pack to decay. 5. Oxidation analysis and interface reaction of electrolyte. Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Why is 18650 lithium battery not charging? How to deal with it?