中國(guo)消費(fei)網訊 應(ying)急充(chong)電(dian)(dian)器的(de)用途主要是為(wei)(wei)了解決移(yi)動數碼(ma)產(chan)品的(de)臨(lin)時(shi)(shi)電(dian)(dian)量不足問題，其工作原(yuan)理，是通(tong)過鋰電(dian)(dian)池(chi)、太陽能板或(huo)者普通(tong)AA干電(dian)(dian)池(chi)作為(wei)(wei)儲電(dian)(dian)單元，經過合適的(de)電(dian)(dian)壓轉換后，實(shi)現(xian)隨(sui)時(shi)(shi)、隨(sui)地、隨(sui)身為(wei)(wei)移(yi)動數碼(ma)產(chan)品供電(dian)(dian)或(huo)充(chong)電(dian)(dian)。記者在市場調(diao)查(cha)中看到，常見(jian)的(de)應(ying)急充(chong)電(dian)(dian)器有(you)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(gan)(gan)(gan)電(dian)(dian)(dian)(dian)池裝(zhuang)入干(gan)(gan)(gan)電(dian)(dian)(dian)(dian)池供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)裝(zhuang)置后，先由干(gan)(gan)(gan)電(dian)(dian)(dian)(dian)池為(wei)該(gai)裝(zhuang)置充電(dian)(dian)(dian)(dian)，充滿(man)后，再由該(gai)裝(zhuang)置為(wei)數碼設備供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)。在外(wai)出辦(ban)事或旅(lv)游時(shi)(shi)，消費者可(ke)以隨(sui)身攜帶(dai)幾(ji)塊(kuai)5號電(dian)(dian)(dian)(dian)池，便于(yu)隨(sui)時(shi)(shi)為(wei)上述供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)裝(zhuang)置充電(dian)(dian)(dian)(dian)。盡管商家宣傳稱，經過上述供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)裝(zhuang)置充電(dian)(dian)(dian)(dian)后，可(ke)支持手機通話兩個小時(shi)(shi)，但實際上，一般能(neng)支持通話十幾(ji)分鐘(zhong)就相當不(bu)錯了。

二、內置鋰(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。它的工作原理(li)是(shi)將鋰電池內置在充(chong)電裝(zhuang)置內，無需安裝(zhuang)電池，便可為數碼(ma)(ma)設(she)備(bei)供電。該充(chong)電器的容量(liang)一(yi)般為800mAH―2000mAH，體積小巧，便于攜帶。目前，該充(chong)電器被(bei)廣泛應用于多種(zhong)數碼(ma)(ma)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)性跟內置鋰電(dian)(dian)池式(shi)充電(dian)(dian)器相似，但其(qi)對(dui)充電(dian)(dian)的條(tiao)件要求較高，在強(qiang)光(guang)下(xia)不間斷地充電(dian)(dian)(直射太陽能(neng)面板)約8小時后，方(fang)可充滿(man)，而隔著(zhu)玻璃充電(dian)(dian)效果較差，在弱光(guang)下(xia)(如燈光(guang))是不能(neng)進行充電(dian)(dian)的。