對手機充電器的基本認識
所有手機充電器其實都是由一個穩定電源（主要是穩壓電源、提供穩定工作電壓和足夠的電流）加上必要的恒流、限(xian)壓、限(xian)時等控制電(dian)路(lu)構成(cheng)。
原裝充電器（指線充）上所標注的(de)(de)輸(shu)(shu)出參(can)數：比如(ru)輸(shu)(shu)出4。4V/1A、輸(shu)(shu)出5.9V/400mA……就是(shi)指內(nei)部穩壓(ya)電(dian)源的(de)(de)相關參(can)數。明白了這(zhe)個(ge)道理，你很(hen)會知道一(yi)個(ge)（品質好的(de)(de)）手機充電(dian)器很(hen)容(rong)易改成一(yi)個(ge)質量優良的(de)(de)穩壓(ya)電(dian)源！ 比如(ru)輸(shu)(shu)出4.4V可以(yi)給4.5V的(de)(de)設(she)備(bei)用，5.9V的(de)(de)可以(yi)給6V的(de)(de)設(she)備(bei)用……
手機常用鋰離子（lion）電池的充電器采(cai)用(yong)(yong)的(de)是恒流(liu)限壓(ya)充(chong)(chong)電制，充(chong)(chong)電電流(liu)一般采(cai)用(yong)(yong)C2左右----即采(cai)用(yong)(yong)兩小時(shi)充(chong)(chong)電率，比如500mah電池采(cai)用(yong)(yong)250ma充(chong)(chong)電大約兩小時(shi)達到4。2V后再恒壓(ya)充(chong)(chong)電。
lion電(dian)(dian)(dian)(dian)池(chi)并不(bu)適合采用NIMH電(dian)(dian)(dian)(dian)池(chi)高級快速充(chong)(chong)電(dian)(dian)(dian)(dian)器所用的-DV/DT檢(jian)測快速充(chong)(chong)電(dian)(dian)(dian)(dian)方(fang)式，因為lion電(dian)(dian)(dian)(dian)池(chi)對充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流有嚴格(ge)的限(xian)制.鋰離子（Li+）非常活(huo)潑，大電(dian)(dian)(dian)(dian)流充(chong)(chong)電(dian)(dian)(dian)(dian)很(hen)容易(yi)產(chan)生危險(xian)。
有機(ji)會接觸國內最(zui)著名的lion離(li)子電(dian)(dian)芯(xin)廠(chang)家(jia)的技術(shu)人員(yuan)，根據(ju)他(ta)們(men)提供的破(po)壞性實驗報告情況(kuang)：一般情況(kuang)下lion電(dian)(dian)池（電(dian)(dian)芯(xin)）在(zai)放電(dian)(dian)情況(kuang)（包(bao)括短路）一般都不會發(fa)生爆炸(zha)，但(dan)有可能出現過(guo)熱和燃燒，但(dan)在(zai)比較嚴(yan)重的過(guo)流充電(dian)(dian)情況(kuang)，就非常容易發(fa)生爆炸(zha)！
目前市場(chang)上(shang)出現標稱可以適合250mah---2500mah電(dian)池充電(dian)的(de)“萬能手機充電(dian)器”，其實是非常危險的(de)，它缺乏(fa)對電(dian)池容量的(de)檢(jian)測，采(cai)用固定的(de)輸出電(dian)流(liu)，對不(bu)同的(de)電(dian)池而言，不(bu)是導致充電(dian)時間過長就是導致過流(liu)充電(dian)。
現在(zai)的(de)USB手(shou)機(ji)充電(dian)(dian)(dian)(dian)器，只不利用了電(dian)(dian)(dian)(dian)腦(nao)(nao)USB口(kou)所(suo)具(ju)備的(de)比較穩定的(de)來自電(dian)(dian)(dian)(dian)腦(nao)(nao)電(dian)(dian)(dian)(dian)源的(de)5。0v電(dian)(dian)(dian)(dian)壓作為充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓源，再同樣(yang)輔(fu)以(yi)相(xiang)關的(de)電(dian)(dian)(dian)(dian)路而構成USB手(shou)機(ji)充電(dian)(dian)(dian)(dian)器，其(qi)輸(shu)出(chu)品質除(chu)受制(zhi)于(yu)USB口(kou)最大(da)輸(shu)出(chu)電(dian)(dian)(dian)(dian)流外，關鍵就是取決于(yu)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)路本身的(de)設計(ji)和材料的(de)優劣了。所(suo)以(yi)，大(da)家要買(mai)設計(ji)比較合理、信(xin)譽好(hao)的(de)名牌大(da)廠的(de)產品。
本文摘自于全球(qiu)電池網(wang)