一种便携式智能充电器的设计  

Development of an intelligent portable battery charger

作　　者：边延凯[1] 田爽[1] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300381

出　　处：《电源技术》2006年第8期677-680,683,共5页Chinese Journal of Power Sources

摘　　要：在充电电池使用过程中,影响电池寿命的最主要因素是过充电和过放电。普通MH-Ni蓄电池、锂离子蓄电池充电器功能比较单一,很难有效防止过充电的发生。研究了一种新型的便携式智能充电器的电路设计。该电路主要采用降压转换芯片MAX1685和数码管驱动芯片MAX7219作为电路主体,采用单片机PIC16F676作为控制核心,通过软件编程可以实现对1～3节锂离子蓄电池或1～8节MH-Ni蓄电池的充电和监测,其充电功能完善,安全高效,显示功能齐全,并且体积小、质量轻,完全适合于便携式设备的充电应用。通过实际的小批量推广应用,取得了良好的使用效果。Overcharge and overdischarge are the main factors of influencing the life of rechargeable battery. This paper introduces a newly developed intelligent portable battery charger with switching circuit. The main circuit of the charger is based on PWM converter MAX 1685. A MCU-PIC 16 F 676 is used as an intelligent controller to change operation mode automatically. The operation mode and the software in PIC16 F 676 are also presented. 1-8 Ni-MH cells or 1-3 lithium-ion cells in series can be charged by different methods. Finally, the experimental main circuit is given. The result proves that the charger is able to auto-adjust control parameters according to charging process, and can realize human-free duty during charging process.

关 键 词：MH-NI蓄电池 锂离子蓄电池 便携式充电器 

分 类 号：TM910.6[电气工程—电力电子与电力传动]