Does fast charging really destroy the battery?

Does fast charging destroy the battery? It depends 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 charging an electric vehicle, the battery management system BMS on the electric vehicle will estimate the state of charge (StateofCharge, the remaining battery power) of the power lithium 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 at Within a reasonable range, prevent 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 by 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. In addition, in addition to fast charging applications in electric vehicles, fast charging protocols for consumer products are also being used more and more. A mobile phone that supports fast charging can indeed bring more convenience to life, such as Huawei's super fast charging, which can charge the battery to 100% in a very short time. The calculation of fast chargers for mobile phones is developing faster, and 40W fast chargers have become more common. It's just that this requires mobile phones and support. At present, only flagship models are equipped with this ultra-fast charging protocol. So, will fast charging cause the battery life to be shortened? In addition, many new energy vehicle owners worry that the use of fast charging will affect the battery life when the temperature is too high in summer. In fact, the 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 Battery failure. In fact, 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 suffer too much damage. In electric vehicles, the higher power is indeed It will increase the risk of battery damage. Once the BMS management system fails, it may cause serious consequences. The fast charging technology applied on mobile phones. Since the mobile phone uses a single string of lithium batteries, the risk is lower than that of multiple strings. However, due to the technical problems of the lithium battery itself, faster charging will always have a certain impact on its physical fitness. , It should be noted that fast charging does have the effect of accelerating battery exhaustion to a certain extent, but it will not be very obvious. Of course, we will not give up using this fast charging technology. The existence of fast charging can significantly shorten the waiting time. time. Compared with the time cost of its battery failure, it is clear which one is more important. 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: Solid-state battery, the battery revolutionary technology that has been waiting for!