Research And Implementation Of The Lithium Battery Management System And The Equalization Algorithm

In recent years, with the in-depth study of lithium-ion battery, which has becomemore and more mature in production technology and been used more and more widely invarious fields. But the lithium-ion battery is easy to overshoot or overdischarge in use, andeven prone to explosion accident when used improperly, so the lithium batterymanagement system becomes a key technology to solve this problem. This paperresearches the main functions and principle of the battery management system andexpounds the reasonable system design and implementation method.This paper first analyzes the research background and significance of the lithiumbattery management system, and then analyzes the development and status of which athome and abroad, and proposes a lithium-ion battery management system design schemebased on MAX11068chip. The system uses sub-module approach, inncluding voltageacquisition and balanced module, MCU and peripheral module, the current acquisitionmodule, temperature acquisition module and communication module, to achieve eachmodule function. The design of system software adopts modular thinking to do a detailedanalysis to the data acquisition module, display module, the charge and discharge controlmodule and the equalization module. In addition, this thesis has also established an uppercomputer system of human-computer interaction, which is able to display the battery runinformation, warning messages and system threshold.Finally, this issue introduces the use of upper computer software and the systemdebugging method.The hardware circuit of the lithium battery management system is reliable andeconomic designed by this project. After debugging, the system can work efficiently andreliably and has achieved all the functions of the design.