基于ATmega88单片机的智能充电机设计与实现

The Intelligent Battery Charger Based On ATmega88 Monolithic Microcomputer

本文介绍了利用新型高效的UCC2808作为电源芯片,外加ATmega88单片机构成的智能充电机。该充电机体积小、充电效率高,能对镍镉、镍氢、锂电三种类型的五种规格电池充电;除对不同种类的电池采用不同的充电方式外,还同时采用了多种方式判断电池的充电状念,这样既保证了电池真正能够充满,也防止了由于过充电造成电池寿命缩短,从而最大限度地延长电池的循环使用寿命。此外,该充电机能够对充电电池进行激活训练;还可以作为输出三个电压级别的稳压电源使用,并具有完备的保护功能。

A sort of intelligent charger is introduced in this article. It adopted effective UCC2808 as power chip and ATmega88 monolithic microcomputer as controller. This charger is smaller and more effective in charging performance. Five kinds batteries of Ni-Cd ,MH-Hi and Li-ion can be charged. Different kinds of batteries can be charged in different styles. At the same time it uses more methods to ensure to judge the filling-up state of batteries. This makes sure the batteries could be filled up in deed as well as avoids the natural life shorten for immoderately charging. Because of this, the batteriesi- recurrence lives can be furthest prolonged. Additionally, this charger can activate the batteries. At the same time, it can also be used as power supply whose outputs have three steady voltages and perfect protection patterns.