Do you know what are the SOC of lithium battery?

The important task of BMS is to test battery working conditions, estimate battery SOC, battery health status, and complete functions such as thermal management, charge and discharge control, CAN communication, balance test, fault diagnosis and liquid crystal display. SOC has many meanings. At present, what is more uniform in the world is the meaning given from the perspective of sedation, that is, the state of charge SOC represents the remaining capacity of the lithium iron phosphate battery, which is numerically equal to the ratio of the remaining capacity of the battery to the rated capacity. The SOC (state of charge) of a lithium battery is simply how much electricity is left in the battery; SOC is the most important parameter in BMS, because everything else is based on SOC, so its accuracy and robustness are extremely important. If there is no accurate SOC, no amount of protection functions can make the BMS work normally, because the lithium battery will often be in a protected state, and it will not be able to extend the life of the battery. The estimation accuracy of SOC is also very important. The higher the accuracy, the higher the cruising range of the lithium battery with the same capacity. Therefore, high-precision SOC estimation can effectively reduce the required lithium battery cost. As an important threshold for charging and discharging, SOC plays a role in regulating and protecting lithium battery packs. In terms of meaning, it is two parameters that directly determine the SOC value, the maximum available capacity of the lithium battery and the current power. Judging from the parameters used in various algorithms, battery terminal voltage and loop current are the most important measurement parameters. 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: What are the important points for the use and assembly of polymer lithium battery cells