一种手机快充方案的实测比较及其解析

Comparison and analysis of a mobile phone fast charging scheme

当今时代是手机性能爆炸式发展的年代,各个厂家都在比拼配置。跟随着CPU、摄像头和屏幕尺寸的发展,手机的电池容量也是水涨船高。为了用户体验,大容量电池对手机的充电速度就有了更高的要求。快速充电就是在这个背景下应运而生。在保持原有充电电流不变的前提下,通过手机与充电器的协调,提高充电器的输出电压,使其输送的功率变大,增大手机端的功率,达到快速把手机电池充满的目的。本文介绍一种基于高通QC2.0的手机(PD)和充电器(HVDCP)之间通信协议改进方案。

In the era of explosive development of mobile phone performance,various manufacturers are competing with each other.As CPUs,cameras and screen sizes go up,so does mobile phone battery capacity.For the sake of user experience,large capacity batteries have higher requirements on the charging speed of mobile phones.Fast charging comes into being under this background.Under the premise of keeping the original charging current unchanged,through the coordination of the phone and the charger,improve the output voltage of the charger,so that its transmission power becomes larger,increase the power of the mobile phone end,to achieve the purpose of filling the mobile phone battery quickly.This paper introduces a communication protocol improvement between mobile phone(PD)and charger(HVDCP)based on Qualcomm QC2.0.