What exactly limits the charging speed of the power lithium battery pack?

The charging speed of the power lithium-ion battery pack is determined by three points: the electrode material used in the power lithium-ion battery, the charging power of the charging pile, and the temperature of the power lithium-ion battery. When discussing the charging speed of power lithium battery packs, the ability of the battery itself is definitely the most inescapable factor. No matter how powerful the peripheral charging equipment is, how powerful the power is, and how strong the charging capacity is, if the battery itself has shortcomings in the acceptable charging capacity, then the charging speed will definitely not rise. In addition, if the battery capacity is relatively large, the natural charging time will be longer. Temperature, generally speaking, the higher the temperature, the faster the diffusion rate, but if the temperature is too high, it will also cause problems such as the life of the lithium battery pack and the decrease of charging safety. If the temperature is too low, the same will not work. If the temperature is too low, the metal lithium in the battery will be deposited, which will cause the internal short circuit of the battery, especially the lithium iron phosphate battery. Materials, as far as the factors affecting the charging speed of the power lithium battery pack are concerned, the materials used in the power lithium ion battery itself have played a crucial purpose. When charging, lithium ions have to accelerate and instantaneously intercalate into the negative electrode, which poses a great challenge to the ability of the negative electrode of a power lithium-ion battery to quickly receive lithium ions. Therefore, if you want to increase the charging speed of power lithium-ion batteries, the use of battery electrode materials has become the key. Charging piles, since charging is an interaction between a charging pile and an electric vehicle, the charging pile will also affect the charging speed. Due to the charging piles of different operators, the charging power that can be output is also different. When the power lithium-ion battery is compatible, higher charging power can directly affect the charging speed. In addition, the energy density of the ternary material lithium battery pack is generally higher than that of the lithium iron phosphate battery. For the same model, if the driving range is required to be the same, the ternary battery pack must be less than the iron lithium battery, and the charging speed is naturally faster. Some. At present, the critical direction for improving the charging speed of power lithium battery packs is still in the use of new electrode materials. In the use of lithium batteries, graphene anode materials must be used as anode active materials and conductive additives, which can greatly improve the conductivity, reduce internal resistance, and increase Discharge and charge rate, higher capacity. At present, a new battery technology based on graphene materials has been developed. Batteries based on graphene materials will have a capacity 45% higher than ordinary batteries currently on the market, which can increase the capacity and have a faster charging speed than the standard 5 times faster charging speed. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Briefly describe the harm of lithium battery electrolyte