Influencing factors and optimization of lithium battery dispersion

Influencing factors of lithium battery dispersion and optimizing the process of lithium battery organization, because the nuance data formed by the lithium battery itself and the group technology of different levels can make the function of the lithium battery inconsistent in the use and placement process, This is the discrete phenomenon of lithium batteries. The phenomenon describing the discrete quantization target is a discrete degree, which is a function of several parameters. The important factors that cause the numerical change of the dispersion are: resistance, temperature, voltage, capacity, etc. 1. The internal resistance of the battery, especially the unevenness of the polarization resistance, causes the voltage of a single battery to change drastically during the charging and discharging process, which leads to drastic changes in the entire battery pack; 2. The inconsistency of the voltage of a single battery will affect the battery pack. Peak shaving capability reduces the energy released by the entire battery pack3. Because of the heat release and heat absorption process of battery operation, the battery temperature will continue to change. When the economy is overheated, it will reduce the function and safety risks. It has been proved that in recent years, electric vehicles Start the operation and test the thermal fuse of the flame to maintain the fire caused by insufficient heating of the battery. The types are not only lithium manganate batteries, lithium iron phosphate batteries,; 4. Capacity is the most serious discrete element, and the problems caused by inconsistent capacity are important. Two aspects of the function, this is a part of the battery charging and discharging state, leading to unsafe elements, such as combustion, explosion, the second is the low capacity of the single battery to complete the work ahead of time, and other areas affect the entire battery pack single battery The energy cannot be completely released, which then leads to battery life. In order to reduce the negative impact of lithium battery dispersion and meet the requirements of battery pack uniformity, it is necessary to improve from the following aspects: 1. In the process of processing, the design of lithium batteries is to meet the requirements of large-scale mechanized processing, and to find technology Ways to control product quality and ensure the consistency of single battery data and internal structure. 2. In the process of use, the sorting and matching skills of lithium batteries must be optimized first, so that the consistency of the lithium batteries during the first use is satisfied; the second is to weaken the internal temperature imbalance of the battery, make the current density as uniform as possible, and reduce The connection method of the battery contact resistance. 3. Test the surface temperature and flow rate of the battery pack, select a reasonable and scientific ventilation structure to make the surface temperature of the entire battery pack uniform, and ensure that each battery is in the same temperature environment when using the battery pack. Poor battery consistency is a difficult process. Mastered in the battery manufacturing process, and current control methods are not perfect, but it is necessary to strengthen the understanding of dispersive lithium batteries to improve the consistency of lithium batteries, which is also the basis for doing this. 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 is the current technical bottleneck of lithium batteries?