基于单片机的智能充电器硬件设计

Design of intelligent charger based on single-chip microcomputer

锂离子电池以其诸多优点成为应用最广泛的可充电电池,针对锂离子电池充电器的不足,设计了一种采用单片机控制的智能型充电控制器,系统硬件组成包括单片机电路、充电控制电路、电压转换及光耦隔离电路,该智能充电器实现智能控制预充、快充、满充三个充电进程,判断充电终止状态,能够有效防止锂离子电池的欠充或过充,具有高效安全的充电控制、过压保护和过流保护功能。

Lithiumion batteries have become the most widely used rechargeable batteries due to their many advantages. Combined with the shortcomings of common chargers,I try to design a type of intelligent battery charger based on microcomputer.The hardware cir- cuits of the system include microcomputer circuit, charge control circuit, voltage transformation and the light pair isolating circuit.. It can control both the three charging process which include previous charge,fast charge and full charge,and judge the charge termina- tion state smartly. It aslo can prevent less charged or overcharged of lithium battery effectively,it also has the functions of high secu- rity charge control,over-voltage protection and over-current protection.