中國消費(fei)網(wang)訊 應(ying)急充(chong)電(dian)(dian)(dian)器的(de)用途主要是為了解決移動(dong)數(shu)碼(ma)產品的(de)臨時電(dian)(dian)(dian)量不足(zu)問題，其工(gong)作原理(li)，是通過鋰電(dian)(dian)(dian)池、太(tai)陽能板或者普通AA干電(dian)(dian)(dian)池作為儲電(dian)(dian)(dian)單(dan)元，經過合適的(de)電(dian)(dian)(dian)壓轉換后，實(shi)現隨時、隨地、隨身為移動(dong)數(shu)碼(ma)產品供電(dian)(dian)(dian)或充(chong)電(dian)(dian)(dian)。記者在市(shi)場調查中看到，常見的(de)應(ying)急充(chong)電(dian)(dian)(dian)器有以下三類。

一、干電池式

    干電池式應急充電器的工作原理是，將干電(dian)(dian)(dian)池(chi)裝(zhuang)(zhuang)(zhuang)入干電(dian)(dian)(dian)池(chi)供電(dian)(dian)(dian)裝(zhuang)(zhuang)(zhuang)置(zhi)后，先(xian)由干電(dian)(dian)(dian)池(chi)為(wei)該裝(zhuang)(zhuang)(zhuang)置(zhi)充電(dian)(dian)(dian)，充滿后，再由該裝(zhuang)(zhuang)(zhuang)置(zhi)為(wei)數碼(ma)設備供電(dian)(dian)(dian)。在外出辦事或(huo)旅游時(shi)，消費者可以隨身(shen)攜帶(dai)幾(ji)塊5號電(dian)(dian)(dian)池(chi)，便于(yu)隨時(shi)為(wei)上(shang)述(shu)供電(dian)(dian)(dian)裝(zhuang)(zhuang)(zhuang)置(zhi)充電(dian)(dian)(dian)。盡管商(shang)家宣傳稱，經過上(shang)述(shu)供電(dian)(dian)(dian)裝(zhuang)(zhuang)(zhuang)置(zhi)充電(dian)(dian)(dian)后，可支持手機通(tong)話兩個小時(shi)，但實(shi)際上(shang)，一般能支持通(tong)話十幾(ji)分(fen)鐘就相當不錯了。

二(er)、內置(zhi)鋰(li)電池式

 　內置鋰電池式應急充電器又叫移動電源、便攜式充電器。它的(de)工(gong)作原(yuan)理是將(jiang)鋰電池(chi)內置在充(chong)電裝置內，無需安裝電池(chi)，便可(ke)為數(shu)碼設(she)備供電。該充(chong)電器的(de)容(rong)量一般為800mAH―2000mAH，體積小巧，便于(yu)攜帶。目前，該充(chong)電器被廣泛應(ying)用于(yu)多種數(shu)碼產品上(shang)。

三、太陽能式

    太陽能式充電器是將太陽能轉換為電能后，存儲在蓄電池里，可為多種數碼產品充電。該充電器的特(te)性跟內(nei)置(zhi)鋰電(dian)池式(shi)充(chong)電(dian)器相似，但其對充(chong)電(dian)的條件要求(qiu)較高，在(zai)強(qiang)光下(xia)不間斷地(di)充(chong)電(dian)(直射(she)太(tai)陽能(neng)面板)約8小(xiao)時后，方可充(chong)滿，而隔著(zhu)玻璃充(chong)電(dian)效果較差，在(zai)弱(ruo)光下(xia)(如燈光)是(shi)不能(neng)進行充(chong)電(dian)的。