Is it true that fast charging destroys the battery?

Can fast charging destroy the battery? It depends critically on battery density, battery material, battery temperature, and BMS (Battery Pack Management System). Among them, battery density, material, and temperature determine the speed of fast charging, and BMS is the core component that controls fast charging. When the electric vehicle is charging, the battery management system BMS on the electric vehicle will estimate the state of charge (StateofCharge, the remaining battery power) of the power lithium-ion battery pack, and automatically adjust the charging current according to the condition of the battery pack to ensure that the remaining battery power is maintained Within a reasonable range, beware of damage to the battery due to overcharge or overdischarge. Therefore, during the fast charging of electric vehicles, after the input current and voltage are controlled through the battery management system BMS, the damage to the battery caused by the fast charging can be reduced as low as possible. In a limited time (the warranty time of each car’s battery) Different), these damages are negligible. Many new energy car owners worry that the use of fast charging will affect the battery life when the temperature is too high in summer. In fact, the current battery management system BMS of many electric vehicles will protect the battery. For example, Tesla will keep the temperature of the battery in a reasonable range and will not overheat it, so fast charging in summer does not necessarily accelerate The battery is dead. In a word, during fast charging, the battery management system BMS adjusts the balance of electronics in the battery, battery temperature, charging voltage and current, etc., so that the battery pack will not be excessively damaged, which means that during the battery pack warranty period , Owners of pure electric vehicles can use fast charging with confidence. However, it should be noted that if fast charging has been used, it will have an impact on the battery life of electric vehicles. The cycle life of the battery is certain. In slow charging, the cycle life of the battery can usually reach more than 3000 times, and if it is always fast charging, the cycle life will be shortened to about a thousand times or even lower. 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: What are the advantages and disadvantages of lithium titanate batteries