現在市面上鋰電池充(chong)(chong)(chong)電方法有慢充(chong)(chong)(chong)和(he)(he)快充(chong)(chong)(chong)兩大主(zhu)流方式，但(dan)是不(bu)管(guan)是哪(na)一種充(chong)(chong)(chong)電方法,鋰(li)電池(chi)在(zai)開始充(chong)(chong)(chong)電的時候都會(hui)經歷預充(chong)(chong)(chong)電這個階段，那么(me)鋰(li)電池(chi)充(chong)(chong)(chong)電為(wei)什(shen)(shen)么(me)要(yao)做預充(chong)(chong)(chong)電呢？而什(shen)(shen)么(me)情況下是充(chong)(chong)(chong)電電池(chi)最佳佳狀態呢？對于很多不(bu)了(le)解(jie)鋰(li)電的朋友來說,并不(bu)理解(jie)為(wei)什(shen)(shen)么(me)鋰(li)電池(chi)充(chong)(chong)(chong)電先(xian)要(yao)預充(chong)(chong)(chong)電？而在(zai)鋰(li)電池(chi)行(xing)(xing)業中已經形成了(le)對鋰(li)離子電池(chi)進行(xing)(xing)充(chong)(chong)(chong)電時的三階段策略：預充(chong)(chong)(chong)電、恒流充(chong)(chong)(chong)電和(he)(he)恒壓(ya)充(chong)(chong)(chong)電。

鋰電池充電為什么(me)要做(zuo)預充電？

鋰(li)離子(zi)電(dian)池(chi)(chi)雖然說(shuo)沒有(you)(you)(you)記(ji)憶效應(ying)的(de)缺點(dian)，但是(shi)(shi)其材料化學(xue)特性有(you)(you)(you)很(hen)強(qiang)的(de)隋(sui)性，應(ying)給(gei)充分(fen)激活后，才(cai)能(neng)(neng)保證以(yi)后的(de)使(shi)用能(neng)(neng)達(da)到最佳效能(neng)(neng)。電(dian)池(chi)(chi)出廠前,鋰(li)電(dian)池(chi)(chi)廠家都(dou)進(jin)行(xing)了(le)激活處(chu)(chu)理,并(bing)進(jin)行(xing)了(le)預(yu)充電(dian)處(chu)(chu)理。這主要是(shi)(shi)由(you)于(yu)鋰(li)離子(zi)電(dian)池(chi)(chi)具(ju)有(you)(you)(you)較高的(de)能(neng)(neng)量(liang)比,如果(guo)直(zhi)接進(jin)入(ru)快速沖電(dian)模(mo)式會影(ying)響鋰(li)電(dian)池(chi)(chi)使(shi)用壽命或損壞電(dian)池(chi)(chi),為了(le)避(bi)免這種現象才(cai)有(you)(you)(you)了(le)預(yu)充電(dian)說(shuo)法。

鋰電(dian)池一般(ban)在出(chu)廠前(qian)已經(jing)做好預充啦,用戶不用再(zai)做什(shen)么預充了，一般(ban)說首次(ci)充電(dian)要10個(ge)小(xiao)時(shi)的是(shi)商家的誤(wu)導,這個(ge)無所謂。鋰電(dian)池系統是(shi)一個(ge)化學(xue)電(dian)能系統,預充就是(shi)激活化學(xue)物質,這樣才能使電(dian)池真(zhen)正(zheng)的產生(sheng)電(dian)能，要是(shi)沒有(you)這個(ge)預充這個(ge)工序,電(dian)池還(huan)只是(shi)半成品,還(huan)不算是(shi)真(zhen)正(zheng)的電(dian)池。

在實際應用中是沒有人能分鋰電池清預充和正式充電界線的,其實就是充電的化學反應有一個啟動過程。鋰電池充電時因為恒電流過大時,有可能損壞電池,所以先進行預充電，先讓活性物質激活,再給電池正常充電。
對鋰電(dian)池生產廠家來說,在電(dian)池設計(ji)中都內置(zhi)線路保(bao)護板,通常(chang)情(qing)況(kuang)下電(dian)池過充過充的幾率(lv)很少,但如(ru)果電(dian)池起先不預充,會帶(dai)來很多方面的隱患(huan),如(ru)保(bao)護板失效、長時(shi)間放(fang)(fang)置(zhi)的自放(fang)(fang)電(dian)率(lv)等,當電(dian)池過放(fang)(fang)會導致活性物質的恢復困難(nan),此先以小電(dian)流充到(dao)2.5V至(zhi)3.0V ,再轉換成快充,預充電(dian)小電(dian)池可以有效解決過放(fang)(fang)電(dian)池的充電(dian)問題(ti)。

充電電池有更佳狀態嗎？

充(chong)電(dian)(dian)電(dian)(dian)池(chi),是充(chong)電(dian)(dian)次數有限的(de)可充(chong)電(dian)(dian)的(de)電(dian)(dian)池(chi),配合充(chong)電(dian)(dian)器使(shi)用。

有(you)一(yi)種說法(fa)就是,充(chong)電(dian)(dian)電(dian)(dian)池使(shi)用得(de)當,會(hui)在(zai)某(mou)一(yi)段循(xun)環范圍出現最(zui)(zui)佳(jia)的狀態,就是容(rong)(rong)量(liang)(liang)最(zui)(zui)大。這個要分情況,密封的鎳氫電(dian)(dian)池和(he)(he)鎳鎘(ge)電(dian)(dian)池,如果使(shi)用得(de)當(比(bi)如定(ding)期的維護(hu)，防止記憶效應的產(chan)生和(he)(he)累計)， 一(yi)般會(hui)在(zai)100 ~ 200個循(xun)環處達(da)到其(qi)容(rong)(rong)量(liang)(liang)的最(zui)(zui)大值,比(bi)如出廠容(rong)(rong)量(liang)(liang)為1000mAh的鎳氫電(dian)(dian)池用了120次循(xun)環后,其(qi)容(rong)(rong)量(liang)(liang)有(you)可能達(da)到1100mAh。

鎳基(ji)電(dian)(dian)(dian)池(chi)(chi)(chi)有(you)最(zui)佳狀(zhuang)態(tai), -般在100~200循(xun)環(huan)(huan)次數之間(jian)達到(dao)(dao)其(qi)最(zui)大容量。對(dui)于液態(tai)鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi),卻根本不存在這(zhe)樣一個循(xun)環(huan)(huan)容 量的(de)(de)駝峰現象,從鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)出(chu)廠到(dao)(dao)最(zui)終(zhong)電(dian)(dian)(dian)池(chi)(chi)(chi)報廢為止(zhi)(zhi)，其(qi)容量的(de)(de)表(biao)現就是(shi)用(yong)一次少一次。我在對(dui)鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)做循(xun)環(huan)(huan)性(xing)(xing)(xing)能的(de)(de)時候也從來沒有(you)看到(dao)(dao)過有(you)容回(hui)升的(de)(de)跡(ji)象鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)沒有(you)最(zui)佳狀(zhuang)態(tai)。鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)更容易(yi)受環(huan)(huan)境(jing)溫(wen)度的(de)(de)變化而(er)表(biao)現不同(tong)的(de)(de)性(xing)(xing)(xing)能,在25~40度的(de)(de)環(huan)(huan)境(jing)溫(wen)度會表(biao)現其(qi)最(zui)好性(xing)(xing)(xing)能,而(er)低(di)溫(wen)或高溫(wen)狀(zhuang)態(tai),他(ta)的(de)(de)性(xing)(xing)(xing)能就大打折(zhe)扣了(le)。要(yao)使(shi)你的(de)(de)鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)充分展現它的(de)(de)容量,-定要(yao)細(xi)心的(de)(de)注(zhu) 意使(shi)用(yong)環(huan)(huan)境(jing),防止(zhi)(zhi)高低(di)溫(wen)現象。

由(you)于鋰電(dian)池(chi)具有(you)較(jiao)高的能量(liang)比,因此在(zai)電(dian)池(chi)使(shi)用(yong)中要嚴格避免過(guo)(guo)充,過(guo)(guo)放的現象。在(zai)安裝電(dian)池(chi)前(qian),確保電(dian)池(chi)處于正常工作狀態,不僅可以節(jie)(jie)省時間,還可以節(jie)(jie)省-些錢(qian)。