應(ying)急充(chong)電(dian)(dian)(dian)(dian)器的(de)(de)用途主(zhu)要是(shi)為了解決移動(dong)數(shu)碼產(chan)品的(de)(de)臨時電(dian)(dian)(dian)(dian)量不足問題，其工作原理(li)，是(shi)通(tong)(tong)過鋰電(dian)(dian)(dian)(dian)池(chi)、太陽能板或者普通(tong)(tong)AA干電(dian)(dian)(dian)(dian)池(chi)作為儲(chu)電(dian)(dian)(dian)(dian)單元(yuan)，經過合適(shi)的(de)(de)電(dian)(dian)(dian)(dian)壓轉換后(hou)，實現隨時、隨地、隨身為移動(dong)數(shu)碼產(chan)品供電(dian)(dian)(dian)(dian)或充(chong)電(dian)(dian)(dian)(dian)。

 應急充電器的(de)用(yong)途主要是為了解決移(yi)動數(shu)碼產品(pin)的(de)臨時電(dian)(dian)(dian)量不足問(wen)題，其工作原理，是通(tong)過鋰電(dian)(dian)(dian)池、太(tai)陽能板(ban)或者普通(tong)AA干電(dian)(dian)(dian)池作為儲電(dian)(dian)(dian)單元，經過合適(shi)的(de)電(dian)(dian)(dian)壓轉換后(hou)，實現(xian)隨時、隨地、隨身(shen)為移(yi)動數(shu)碼產品(pin)供電(dian)(dian)(dian)或充電(dian)(dian)(dian)。記(ji)者在(zai)市場(chang)調查中(zhong)看(kan)到(dao)，常見的(de)應(ying)急(ji)充電(dian)(dian)(dian)器有(you)以下三類(lei)。

　　干電池式

　　干(gan)(gan)電(dian)(dian)(dian)(dian)池(chi)(chi)式應急充電(dian)(dian)(dian)(dian)器的工作原(yuan)理(li)是，將干(gan)(gan)電(dian)(dian)(dian)(dian)池(chi)(chi)裝(zhuang)(zhuang)入干(gan)(gan)電(dian)(dian)(dian)(dian)池(chi)(chi)供電(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置(zhi)(zhi)后(hou)，先由干(gan)(gan)電(dian)(dian)(dian)(dian)池(chi)(chi)為該(gai)裝(zhuang)(zhuang)置(zhi)(zhi)充電(dian)(dian)(dian)(dian)，充滿后(hou)，再由該(gai)裝(zhuang)(zhuang)置(zhi)(zhi)為數(shu)碼設(she)備供電(dian)(dian)(dian)(dian)。在外出辦事或旅(lv)游時，消費者可以隨身攜帶幾塊5號電(dian)(dian)(dian)(dian)池(chi)(chi)，便于隨時為上述供電(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置(zhi)(zhi)充電(dian)(dian)(dian)(dian)。盡管(guan)商家宣傳稱，經(jing)過上述供電(dian)(dian)(dian)(dian)裝(zhuang)(zhuang)置(zhi)(zhi)充電(dian)(dian)(dian)(dian)后(hou)，可支(zhi)持手機(ji)通話兩個小時，但(dan)實際上，一般能支(zhi)持通話十(shi)幾分鐘就相當不錯了。

　　內置(zhi)鋰電池式

　　內(nei)置鋰電(dian)池(chi)式應急充電(dian)器(qi)(qi)又叫移動電(dian)源(yuan)、便(bian)(bian)攜式充電(dian)器(qi)(qi)。它的(de)工作(zuo)原(yuan)理是將鋰電(dian)池(chi)內(nei)置在充電(dian)裝(zhuang)置內(nei)，無需安裝(zhuang)電(dian)池(chi)，便(bian)(bian)可為(wei)數(shu)碼(ma)設備(bei)供電(dian)。該(gai)充電(dian)器(qi)(qi)的(de)容量一(yi)般為(wei)800mAH―2000mAH，體積小(xiao)巧，便(bian)(bian)于(yu)攜帶(dai)。目前(qian)，該(gai)充電(dian)器(qi)(qi)被廣(guang)泛應用于(yu)多(duo)種(zhong)數(shu)碼(ma)產品上。

　　太陽能式

　　太陽能式充電器是(shi)將太陽能轉換為(wei)電(dian)(dian)能后(hou)，存儲在蓄電(dian)(dian)池里，可(ke)為(wei)多種(zhong)數碼(ma)產品(pin)充(chong)(chong)電(dian)(dian)。該充(chong)(chong)電(dian)(dian)器的特性(xing)跟內(nei)置鋰電(dian)(dian)池式(shi)充(chong)(chong)電(dian)(dian)器相似，但其(qi)對充(chong)(chong)電(dian)(dian)的條件(jian)要(yao)求較高，在強(qiang)光下不間斷地充(chong)(chong)電(dian)(dian)(直射太陽能面板)約8小時后(hou)，方可(ke)充(chong)(chong)滿，而(er)隔著玻璃充(chong)(chong)電(dian)(dian)效果較差，在弱光下(如燈光)是(shi)不能進行充(chong)(chong)電(dian)(dian)的。