Introduction to the basic functions of the power lithium battery management system

The most important part of the power lithium battery is the battery management system, which is an important link between the power lithium battery and electric vehicles. The basic functions of the battery management system are divided into three parts: detection, management and protection. Specifically, it includes functions such as data collection, condition monitoring, balance control, thermal management, and safety protection. The following are the basic functions of the power lithium battery management system by Asian land travel technicians: The housing function of the power lithium battery 1: Thermal management The important function of the battery management system in thermal management is to accurately measure and monitor the temperature of the power lithium battery . When the battery temperature is too high, effective heat dissipation and ventilation can ensure the uniform distribution of the battery temperature field. Under low temperature conditions, it can be heated quickly to make the battery pack work normally. Function 2: Balance control balance management helps maintain the capacity of the power lithium battery and control the depth of discharge. If there is no power lithium battery with balance control, because of the protection function setting of the battery management system, it will happen that when one battery is fully charged and the other batteries are not fully charged or discharged, the minimum charge limit for a single battery is not reached. Once the power lithium battery is overcharged or overdischarged, an irreversible chemical reaction will occur inside the power lithium battery, which will affect the nature of the power lithium battery and thus affect the service life of the power lithium battery. Function 3: Condition monitoring The analysis of power lithium battery status mainly includes two aspects: battery remaining power and battery aging degree, namely SOC evaluation and SOH evaluation. The SOC allows the driver to obtain direct information about the impact of the remaining power on the range. At present, many studies are focused on SOC analysis to improve its accuracy. SOC analysis will be affected by SOH, and the SOH of power lithium battery will be constantly affected by factors such as temperature and current during use, so continuous analysis is required to ensure the accuracy of SOC analysis. Function 4: Data collection Data collection is the basis and prerequisite for other functions of the battery management system. The accuracy and speed of data collection can reflect the advantages and disadvantages of the battery management system. According to the collected data, other functions of the management system, such as SOC status analysis, balance management, thermal management, etc., are analyzed and processed. Function five: safety protection Safety protection is the most important function in the entire battery management system, which is realized on the basis of the first four functions. Important includes over-current protection, over-charge and over-discharge protection, over-temperature protection and insulation monitoring. This article introduces the basic functions of the power battery management system. The important purpose of the battery management system is to improve the utilization rate of the power lithium battery, prevent the power lithium battery from charging and discharging, extend the service life of the power lithium battery, and monitor the status of the power lithium battery. With the development of the battery management system, other functions will be added. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous: Can I send lithium-ion batteries by express delivery abroad?