中國消費網訊 應(ying)急(ji)(ji)充電(dian)(dian)器(qi)(qi)的用途(tu)主要是為了解決移動數碼(ma)產品的臨時(shi)電(dian)(dian)量(liang)不足問題，其工作原理，是通過(guo)(guo)鋰(li)電(dian)(dian)池、太陽能板或(huo)者普通AA干電(dian)(dian)池作為儲電(dian)(dian)單元，經過(guo)(guo)合適的電(dian)(dian)壓轉換后(hou)，實現隨時(shi)、隨地(di)、隨身為移動數碼(ma)產品供電(dian)(dian)或(huo)充電(dian)(dian)。記者在市場調(diao)查中看到(dao)，常見(jian)的應(ying)急(ji)(ji)充電(dian)(dian)器(qi)(qi)有(you)以(yi)下(xia)三類(lei)。

一、干電池式

    干電池式應急充電器的(de)工作原理是(shi)，將干電(dian)(dian)池(chi)裝(zhuang)入干電(dian)(dian)池(chi)供(gong)(gong)電(dian)(dian)裝(zhuang)置后(hou)(hou)，先由干電(dian)(dian)池(chi)為該裝(zhuang)置充電(dian)(dian)，充滿后(hou)(hou)，再由該裝(zhuang)置為數碼設(she)備供(gong)(gong)電(dian)(dian)。在外出辦事(shi)或旅游時，消(xiao)費者可以隨身攜帶幾塊(kuai)5號(hao)電(dian)(dian)池(chi)，便于隨時為上(shang)述供(gong)(gong)電(dian)(dian)裝(zhuang)置充電(dian)(dian)。盡管(guan)商家(jia)宣傳稱，經過上(shang)述供(gong)(gong)電(dian)(dian)裝(zhuang)置充電(dian)(dian)后(hou)(hou)，可支持手機(ji)通話兩個小時，但實際上(shang)，一般能(neng)支持通話十幾分鐘就相當不錯了。

二、內置鋰電池式

 　內置鋰電池式應急充電器又叫移動電源、便攜式充電器。它的工作原理是將鋰(li)電(dian)(dian)池內置在(zai)充電(dian)(dian)裝(zhuang)置內，無需安裝(zhuang)電(dian)(dian)池，便可為數碼設備供(gong)電(dian)(dian)。該充電(dian)(dian)器(qi)的容(rong)量一般(ban)為800mAH―2000mAH，體積小巧(qiao)，便于攜帶。目前，該充電(dian)(dian)器(qi)被(bei)廣泛應用于多種數碼產品上。

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(de)特性跟內置鋰電(dian)(dian)池式充(chong)電(dian)(dian)器相似，但其對充(chong)電(dian)(dian)的(de)條件要求較高，在(zai)強光下(xia)不間斷地充(chong)電(dian)(dian)(直射太陽能(neng)面板(ban))約8小時(shi)后，方(fang)可(ke)充(chong)滿，而隔著(zhu)玻璃充(chong)電(dian)(dian)效果較差，在(zai)弱光下(xia)(如燈光)是不能(neng)進行充(chong)電(dian)(dian)的(de)。