Brief introduction of lithium battery BMS battery management system

The battery management system, BMS (Battery Management System), is an important component of power lithium-ion batteries. Commonly known as battery nanny or battery housekeeper, it is important to intelligently manage and maintain each battery unit, guard against overcharge and overdischarge of the battery, prolong the service life of the battery, and monitor the status of the battery. On the one hand, it tests, collects and preliminarily calculates the real-time battery status parameters, and controls the on and off of the power supply loop based on the comparison between the test value and the permitted value; on the other hand, it reports the collected key data to the vehicle controller and receives the controller To coordinate with other systems on the vehicle. Battery management system, different battery cell types, often have different requirements for the management system. There are many fast batteries in a set of lithium battery packs. How is the BMS managed? If we have seen the analysis diagram of the battery pack, we will see that there are hundreds of cells inside. How to manage these dense cell systems? The critical work of the BMS system is divided into two major tasks to test the battery and ensure the safety of the lithium battery. Among them, the implementation of battery testing is relatively simple. The most important thing is to collect the parameter information of the battery during use through the sensor, such as temperature, voltage and current of each battery cell, and voltage and current of the battery pack. These data will play a crucial role in the subsequent battery pack management. It can be said that without these battery status data as support, the system management of power lithium batteries will be impossible to talk about. The critical functions of the battery management system can be analyzed into the following three aspects: 1. Safety, protect battery cells or battery packs from damage, and be alert for safety accidents; 2. Durability, make the battery work in a reliable and safe area , Extend the service life of the battery; 3. Power, keep the battery working in a state that meets the requirements of the vehicle. 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 advantages of UPS power lithium battery energy storage?