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智能充电程序   论文
双击自动滚屏 文章来源:   发布者:jsjlw99   发布时间:2009/7/6 10:59:59   阅读:1827
随着电子技术的不断发展,便携式设备扮演了重要的角色,而小型款便携式的手机充电器可以便利和丰富人们的生活。
本文从锂电池的结构原理着手,通过的锂电池性能及常用充电方法的研究比较,以及结合目前手机充电器的使用情况,设计一款由新型微处理器,针对市场上常见手机锂电池的充电器智能充电电路控制功能。
    本文利用USB端口提供的电源,通过A/D转换和PWM控制完成恒流恒压充电功能,系统地阐述了设计原理及方法,并且通过硬件制作与调试完成了设计任务。
 
关键词:锂电池  USB供电端口  微处理器  恒压恒流  PWM

     With the development of electronic technology, portable equipments are playing a important role, and a pint-sized portable cellphone charger will bring the convenience and pleasure to people’s life.
The principle,character and charging method of Li-ion and Li-polymer battery are illuminated in the paper, and different impacts on the performance of battery in different charging methods and the situation of use of cellphone charger are analyzed in detail based on which, an intelligent charger IC for generic Li-ion or Li-polymer battery on the market which is controlled by mcroprocesser is necessary to be designed.
USB port is selected for supplying power with the system, and the charger is charged by making use of A/D conversion and PWM control in CC/CV mode. The principle and method of the design are also illuminated in this paper, when the hardware is successful to execute and modulate, the job is finished.
 
Keyword: Li-ion or Li-polymer battery   power supply   CC/CV   P89LPC925   PWM


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