一种通用型智能充电器的设计

A Universal Intelligent Battery Charger

为解决７．２Ｖ锂离子电池和６Ｖ镍氢／镍镉电池的智能高效充电，设计了一种通用型智能充电器．它基于微控制器的电路设计使得电池充电智能化，同时采用片内集成的高分辨率１６位单积分Ａ／Ｄ转换器和１６位脉宽调制信号输出定时器（ＰＷＭ），这就保证了充电器的设计具有很高的系统精度．充电器的软件体系结构采用模块化的程序设计，５个子程序模块对应５种相应的充电操作模式：自适应充电模式、锂离子电池充电模式、镍氢／镍镉电池充电模式、放电模式、错误处理模式．

The reference design is developed for the charge of 7.2 V Li-ion and 6 V NiMH / NiCd battery pack base on COP8ACC microcontroller. With the features of this kind of microcontroller on-chip 16-bits resolution A / D block and 16-bits resolution PWM Timer, the design guarantee high system accuracy,for the charge of Li-ion battery, the high resolution A/D converter can guarantee ± 1% system accuracy of the measure of battery voltage. For the charge of NiMH/NiCd battery the high resolution A / D means more accurate negative delta battery voltage can be detected eywords.