What are the important reasons for the life degradation of lithium iron phosphate battery packs?

Important reasons for the attenuation of the life of lithium iron phosphate battery packs: 1. The internal resistance of the lithium battery pack, especially the inconsistency of the polarization internal resistance, makes the voltage of individual batteries 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 affect the peak regulation capacity of the battery pack, and reduce the energy released by the overall lithium battery pack; 3. Due to the heat release and heat absorption process of the ultra-thin battery working, the battery temperature will continue to change , When overheating, it will bring performance degradation and safety hazards. Facts have proved that the fuse of electric vehicle operation and test fires in recent years is caused by insufficient over-temperature protection to cause the battery to heat up and fire. The battery type not only contains manganese acid. The same is true for lithium and lithium iron phosphate battery packs; 4. Capacity is the most serious factor in discreteness. Inconsistent capacities cause performance problems in two aspects. One is that some lithium iron phosphate battery packs will be overcharged and overdischarged. Unsafe factors such as combustion and explosion. The second is that the low-capacity single-cell battery ends early, which affects the energy of the other single-cell batteries in the entire ultra-thin battery pack cannot be completely released, which causes the life of the entire lithium battery pack to decay. 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 article: What are the wrong ways to use lithium-ion electric vehicle batteries?