1.PD充电协议是什么意思

    PD充电协议是USB-IF组织公布的功率传输协议，它可以使目前默认最大功率5V/2A的type-c接口提高到100W，同时谷歌宣布Android7.0以上的手机搭载的快充协议必须支持PD协议，意在统一快充市场。

1. What does the PD charging protocol mean

     The PD charging protocol is a power transmission protocol announced by the USB-IF organization. It can increase the current default maximum power of 5V/2A type-c interface to 100W. At the same time, Google announced that the fast charging protocol carried by mobile phones above Android 7.0 must support PD The agreement is intended to unify the fast charging market.

2.PD协议快充是什么意思

    USB-PowerDelivery（USBPD）是目前主流的快充协议之一。是由USB-IF组织制定的一种快速充电规范。USBPD透过USB电缆和连接器增加电力输送，扩展USB应用中的电缆总线供电能力。该规范可实现更高的电压和电流，输送的功率最高可达100瓦，并可以自由的改变电力的输送方向。

USBPD和Type-C的关系。经常会有人把USBPD和Type-C放在一起谈，甚至就把Type-C充电器叫做PD充电器。USBPD和Type-C其实是两码事，USBPD是一种快速充电协议，而Type-C则是一种新的接口规范。Type-C接口默认最大支持5V/3A，但在实现了USBPD协议以后，能够使输出功率最大支持到前文提到的100W。所以现在许多实用Type-C接口的设备都会支持USBPD协议。

 

USBPD的发展前景。USBPD现在已经发展到了USBPD3.0版本。在谷歌的推动下目USBPD已经收编了高通的QC快充协议，并获得了中国工信部的支持。有望在不久统一目前混乱的快充市场。

 

2. What does PD protocol fast charge mean?

     USB-PowerDelivery (USBPD) is one of the current mainstream fast charging protocols. It is a fast charging specification formulated by the USB-IF organization. USBPD increases power transmission through USB cables and connectors, expanding the power supply capability of the cable bus in USB applications. The specification can achieve higher voltage and current, the transmission power can reach up to 100 watts, and the direction of power transmission can be freely changed.

The relationship between USBPD and Type-C. People often talk about USBPD and Type-C together, and even call Type-C chargers as PD chargers. USBPD and Type-C are actually two different things, USBPD is a fast charging protocol, and Type-C is a new interface specification. The Type-C interface supports up to 5V/3A by default, but after the USBPD protocol is implemented, the output power can be up to 100W as mentioned above. So now many practical Type-C interface devices will support the USBPD protocol

3.PD快充协议优势

    PD是PowerDelivery，关注的是两个或者多个设备，甚至是一个基于USB接口的智能电网的电能传输过程，电能传输可以是双方向的，甚至是组网的，可以具备系统级供电策略。而QC是QuickCharge仅仅关注的是快速充电问题，电能传输是单方向的，不具备电能组网能力，不支持除了供电以外的其他功能。

当然，很多用户看了以后还是不了解其中的意义，简单的来说，如果PD协议得以普及，你又可以回到此前家里只用一个充电器就可以给所有手机充电的美好时光，甚至更美好的是这个充电器还可以给你的电脑和平板充电，而且手机也可以变身移动电源，这样，世界又重归清静，蜘蛛网消失吧！

 

3. Advantages of PD fast charge protocol

     PD is PowerDelivery, which focuses on the power transmission process of two or more devices, or even a smart grid based on the USB interface. The power transmission can be bidirectional or even networked, and can have a system-level power supply strategy. QC is that QuickCharge only pays attention to the problem of fast charging. The power transmission is unidirectional, it does not have the power network capability, and does not support other functions except power supply.

Of course, many users still don’t understand the meaning after reading it. Simply put, if the PD protocol is popularized, you can go back to the good time that you can charge all mobile phones with only one charger at home, or even better. The thing is that this charger can also charge your computer and tablet, and the mobile phone can also be transformed into a mobile power bank. In this way, the world will be quiet again and the spider web will disappear!