Battery system SOC available range

SOC available range: SOC range minus SOC buffer area, the remaining part is SOC available range. The percentage of the SOC state range is generally from 0% to 100%, but considering the chemical battery reaction characteristics: threshold boundary, static and dynamic difference, magnification difference, estimation accuracy difference, etc., SOC estimation should be set aside in the buffer zone to ensure Lithium batteries always work in a safe area. The optimization of the available range of SOC is to determine the lower limit of the battery under different conditions and working conditions. The buffer zone of the upper limit of the lithium battery is very small, and there is not much room for mining. The upper limit of the cache is important in terms of charging safety, to ensure that it is not fully charged. The SOC is 80% in fast charging; in slow charging, it can reach more than 95% by relying on trickle current charging. The lower limit of the battery is important to consider the discharge conditions, the ability of the discharge current to change, which will affect the power output or driving experience. At the same time the width of its cache is still very large. Through the above decomposition, the key to the SOC available range is the accuracy of the lithium battery parameters and the accuracy of the BMS algorithm. These two aspects are indispensable. At the same time, under the premise of ensuring battery safety, in the face of various working conditions, BMS strategies and algorithms cannot be one-size-fits-all, but must be implemented accurately and at multiple levels. Under the premise of the safety of lithium batteries, the battery capacity is used to optimize and maximize the available range of SOC. 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 favorable factors for the development of the lithium battery cathode material industry?