四段式智能充电管理系统的设计与实现

Design and implementation of a four-stage intelligent charging management system

针对纯电动汽车车载动力电池系统的充电要求,设计了一款基于飞思卡尔单片机MC9S12XEP100和电池组监控芯片LTC6803-4的四段式锂离子动力电池智能充电管理系统,它能解决现有充电过程中各充电阶段控制精度不够的缺陷。该设计由主控制器模块、通信模块、均衡模块、充电控制模块、信号采集模块以及人机接口模块组成,采用具有模糊逻辑控制的四段式智能充电管理策略,自动调整充电电流、充电电压,并自动切换充电阶段。实验结果表明,与基准恒流恒压(CC-CV)充电方法相比,该智能充电管理系统充电时间缩短了32.6%,充电效率提高了2.23%,是一种能快速充电、操作方便、运行可靠的充电管理装置。

Aiming at the charging requirements of pure electric vehicle battery system,this paper designed a four-stage lithium ion power battery intelligent charging management system based on Freescale’s MC9S12XEP100 and battery monitoring chip LTC6803-4,which could solve the existing charging defects of the inaccurate control in the charging phases.The design was mainly composed of the main controller module,communication module,equalization module,charging control module,signal acquisition module and man-machine interface module.The four-stage intelligent charging management strategy with fuzzy logic control was adopted to automatically adjust the charging current and voltage,and automatically switch the charging stage.The experimental results show that,compared with the benchmark constant current-constant voltage(CC-CV) charging method,the intelligent charging management system reduces the charging time by 32.6% and improves the charging efficiency by 2.23%.So the designed charging management system can realize fast and high efficient charge with convenient operation.