基于PWM反馈控制的蓄电池快速充电系统设计  

Design of Fast Charge System of Battery Based on PWM Feedback Control

作　　者：丁力[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《仪表技术》2011年第7期22-24,共3页Instrumentation Technology

摘　　要：文章根据蓄电池的快速充电原理,利用PWM波形控制充电电压的开断和大小,同时对蓄电池的放电电流和电压进行实时监控,并引入反馈控制,实现变电压间歇式充电,提高了充电效率。系统选用Atm ega 8单片机作为控制核心,利用PWM波驱动三极管及功率MOSFET管,通过PWM波占空比来控制充电过程,最后给出了软件设计的流程图。In this paper,according to the principle of fast charge of battery,by using the PWM wave to control the charging voltage and its interruption,then watching the discharging real-time current and voltage and introducing the feedback control,a way of changing voltage intermittent charging is designed and the efficiency of charging has been improved.In the system,the Atmega8 as the MCU is choosed,and the PWM wave is used to drive the transistor and MOSFET,the process of charging through the duty ratio of the PWM wave is controlled.In the end,the flow chart of the software design is proposed.

关 键 词：PWM 变电压间歇快速充电 ATMEGA8单片机 

分 类 号：TM912[电气工程—电力电子与电力传动]