自從前一陣子小米新款手機發布后，我們發現智能設備終端在配置性能與外觀設計升級革新后，電池的容量不但沒有提升，反而為了外觀輕薄而縮減了。從蘋果x與蘋果8支持快充開始，越來越多的設備開始支持快充。快充依然演變成智能手機、終端設備的一項必備功能。快充時代悄然降臨，作為主流的將為我們的電量保駕護航。

雖然(ran)隨著科技的(de)(de)發展，快(kuai)(kuai)充(chong)(chong)(chong)(chong)的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率越發的(de)(de)強大。但很(hen)多人依然(ran)不(bu)(bu)清楚(chu)什么是(shi)(shi)快(kuai)(kuai)充(chong)(chong)(chong)(chong)，什么樣的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)配件(jian)算(suan)是(shi)(shi)pd快(kuai)(kuai)充(chong)(chong)(chong)(chong)？在為了解(jie)決充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)速度的(de)(de)問題上(shang)，主要的(de)(de)解(jie)決方案(an)分(fen)為兩類：分(fen)別是(shi)(shi)：高(gao)電(dian)(dian)(dian)(dian)壓低電(dian)(dian)(dian)(dian)流快(kuai)(kuai)充(chong)(chong)(chong)(chong) 以(yi)及(ji) 低電(dian)(dian)(dian)(dian)壓高(gao)電(dian)(dian)(dian)(dian)流快(kuai)(kuai)充(chong)(chong)(chong)(chong)。因為P=UI所以(yi)想要提升充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的(de)(de)功率無非就是(shi)(shi)增(zeng)大電(dian)(dian)(dian)(dian)壓與電(dian)(dian)(dian)(dian)流，但是(shi)(shi)由于充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)能轉化帶(dai)來的(de)(de)發熱問題，所以(yi)電(dian)(dian)(dian)(dian)壓與電(dian)(dian)(dian)(dian)流就不(bu)(bu)能隨意加(jia)大，避免安(an)全隱患(huan)。

Pd快(kuai)(kuai)(kuai)充(chong)(chong)(chong)中(zhong)應用的(de) USB PD充(chong)(chong)(chong)電(dian)協議，同時包含了(le)高(gao)電(dian)壓低電(dian)流(liu)(liu)充(chong)(chong)(chong)電(dian)模式和(he)低電(dian)壓高(gao)電(dian)流(liu)(liu)充(chong)(chong)(chong)電(dian)模式。由于傳(chuan)統(tong)的(de)usb接(jie)口的(de)安卓線對(dui)(dui)電(dian)流(liu)(liu)的(de)承(cheng)受(shou)極(ji)限(xian)只有(you)2A，在當今的(de)快(kuai)(kuai)(kuai)充(chong)(chong)(chong)時代(dai)就顯得相形(xing)見絀了(le)。對(dui)(dui)電(dian)流(liu)(liu)更加親和(he)友好的(de)Type-C接(jie)口逐漸展(zhan)露頭(tou)角，首先其數據(ju)傳(chuan)輸(shu)速度(du)可(ke)(ke)達10G bit/s,極(ji)限(xian)電(dian)流(liu)(liu)更是可(ke)(ke)達5A，所(suo)以Type-C接(jie)口的(de)數據(ju)線便取代(dai)了(le)傳(chuan)統(tong)的(de)安卓線成(cheng)為了(le)pd快(kuai)(kuai)(kuai)充(chong)(chong)(chong)的(de)搭檔。而且(qie)pd快(kuai)(kuai)(kuai)充(chong)(chong)(chong)協議不(bu)(bu)止支持(chi)單(dan)對(dui)(dui)單(dan)點的(de)快(kuai)(kuai)(kuai)充(chong)(chong)(chong)，也支持(chi)多對(dui)(dui)多點的(de)聯(lian)合式快(kuai)(kuai)(kuai)充(chong)(chong)(chong)環境因此前(qian)景也被(bei)大(da)多數人看好。目前(qian)pd快(kuai)(kuai)(kuai)充(chong)(chong)(chong)不(bu)(bu)斷(duan)發展(zhan)，已(yi)經成(cheng)功兼(jian)容(rong)QC、FCP、等其他多種快(kuai)(kuai)(kuai)充(chong)(chong)(chong)協議，并且(qie)同時也解決(jue)了(le)之(zhi)前(qian)手機充(chong)(chong)(chong)電(dian)第一次總是插(cha)(cha)(cha)反的(de)魔(mo)咒。因為pd快(kuai)(kuai)(kuai)充(chong)(chong)(chong)協議在電(dian)流(liu)(liu)傳(chuan)輸(shu)中(zhong)可(ke)(ke)以任(ren)意(yi)改變方向所(suo)以正(zheng)(zheng)反插(cha)(cha)(cha)都可(ke)(ke)以，不(bu)(bu)會出現老式安卓線接(jie)口第一次總是插(cha)(cha)(cha)不(bu)(bu)對(dui)(dui)的(de)情況，正(zheng)(zheng)反插(cha)(cha)(cha)都可(ke)(ke)以正(zheng)(zheng)常充(chong)(chong)(chong)電(dian)。