Mobile Communication Base Station Back-up Power Management System Design

In the21st century, energy problem has caused worldwide concern. Battery as asolution to energy problems in one direction has been considerable development. In theuse of the battery pack existing overcharge, over discharge, over current, over voltage,charge imbalance and other issues which seriously hamper the popularization andapplication of the battery itself. Meanwhile mobile base stations are basically unmannedrooms,the power supply distributed in poor environment, poor quality of the base stationand easy to interrupt,so the backup DC power supply urgent need an efficient batterymanagement system (BMS) to manage to ensure it safe and reliable using, whileextending battery life as much as possible. At present, research on the battery BMSsystem is still in its infancy, because of the system platform structures involved incommunications, electronics, embedded technology, so that it is difficult to develop. Thisarticle is a combination of32-bit MCU STM32F107VC6and MC9S12P32, according tothe technology of battery management system requirements, designed a set of highaccuracy, online monitoring, upgrading fully functional battery management system.In this paper, the lithium-ion battery management system that used for mobile basestation composed of a lithium-ion battery management system and a monitoring system.Each monitoring unit can simultaneously manage12sets of battery and monitoringvoltage and the current during charging or discharging. The management system buildhardware platform based on embedded hardware components and build completeunderlying driver. Its modular design reduces design complexity, improve system’smaintainability, while achieving data acquisition, power estimation, diagnostic alarm,charge and discharge control. Control board and auxiliary control panels using CAN buscommunication to increase the stability of the system communication., This paperintroduce the design of overall system architecture by means of a description to singlebattery charge and discharge management mechanism,. The accuracy of the systemparameters is the basis for calculation and control system, this paper uses an integratedsilicon voltage detection scheme, applied the Linear production LTC6803IG-1to achievevoltage and temperature detection and balance management. In the Lithium battery packequalizing charge system, this paper uses fuzzy PID composite Control which is a newsolution to charge an discharge management. This system designed for the back-up batterymanagement system has its own application and reference value to the research anddevelopment of battery management system.