所有(you)的(de)(de)電(dian)(dian)(dian)(dian)池在一(yi)定的(de)(de)用電(dian)(dian)(dian)(dian)情況下(xia)，都會(hui)有(you)放(fang)電(dian)(dian)(dian)(dian)截止電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和滿(man)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)以及(ji)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)這三個狀態，對(dui)于單(dan)顆(ke)電(dian)(dian)(dian)(dian)芯(xin)(xin)來說，不(bu)(bu)同種類的(de)(de)電(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)芯(xin)(xin)它們各自(zi)的(de)(de)截止電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)、工作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和滿(man)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)都不(bu)(bu)同，組成的(de)(de)電(dian)(dian)(dian)(dian)池組后，放(fang)電(dian)(dian)(dian)(dian)截止電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和滿(man)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)以及(ji)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)也會(hui)不(bu)(bu)同。下(xia)面就簡(jian)單(dan)來了解一(yi)下(xia)吧。

日常使用的1.2V鎳氫電池，其(qi)充滿(man)電(dian)(dian)(dian)壓通常為(wei)1.4V，放(fang)電(dian)(dian)(dian)終止電(dian)(dian)(dian)壓是0.9V。這就意味著，鎳(nie)(nie)(nie)氫(qing)電(dian)(dian)(dian)池(chi)(chi)(chi)在(zai)(zai)(zai)放(fang)電(dian)(dian)(dian)到0.9V時已經不(bu)便(bian)使用(yong)，應該充電(dian)(dian)(dian)了。因(yin)此，0.9V既是放(fang)電(dian)(dian)(dian)時的(de)(de)終止電(dian)(dian)(dian)壓，也(ye)可以看作是鎳(nie)(nie)(nie)氫(qing)電(dian)(dian)(dian)池(chi)(chi)(chi)充電(dian)(dian)(dian)的(de)(de)起始電(dian)(dian)(dian)壓。實用(yong)中(zhong)，因(yin)為(wei)0.9V之后(hou)的(de)(de)鎳(nie)(nie)(nie)氫(qing)電(dian)(dian)(dian)池(chi)(chi)(chi)還有(you)一些小電(dian)(dian)(dian)流(liu)存在(zai)(zai)(zai)，所以，有(you)的(de)(de)鎳(nie)(nie)(nie)氫(qing)電(dian)(dian)(dian)池(chi)(chi)(chi)將起始電(dian)(dian)(dian)壓設置為(wei)0.8V也(ye)是可行的(de)(de)。鎳(nie)(nie)(nie)氫(qing)電(dian)(dian)(dian)池(chi)(chi)(chi)充滿(man)后(hou)的(de)(de)電(dian)(dian)(dian)壓在(zai)(zai)(zai)1.4V左右(you)，這可以視(shi)為(wei)其(qi)最高電(dian)(dian)(dian)壓，但個體(ti)電(dian)(dian)(dian)池(chi)(chi)(chi)也(ye)要視(shi)具體(ti)充電(dian)(dian)(dian)方式而定。

一般(ban)鋰(li)電(dian)(dian)(dian)池(chi)(chi)工(gong)作(zuo)電(dian)(dian)(dian)壓(ya)(ya)(ya)3.7V,終(zhong)止(zhi)電(dian)(dian)(dian)壓(ya)(ya)(ya)3.2V；鐵(tie)磷(lin)酸(suan)鋰(li)離子電(dian)(dian)(dian)池(chi)(chi)工(gong)作(zuo)電(dian)(dian)(dian)壓(ya)(ya)(ya)3.26V,終(zhong)止(zhi)電(dian)(dian)(dian)壓(ya)(ya)(ya)2.5V。鋰(li)離子電(dian)(dian)(dian)池(chi)(chi)充滿電(dian)(dian)(dian)的(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)，業(ye)內稱作(zuo)終(zhong)止(zhi)充電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)(ya)。根據(ju)電(dian)(dian)(dian)池(chi)(chi)工(gong)業(ye)標(biao)準，該電(dian)(dian)(dian)壓(ya)(ya)(ya)為額定電(dian)(dian)(dian)壓(ya)(ya)(ya)值的(de)1.2倍(bei)左右。如3.6V的(de)手(shou)機電(dian)(dian)(dian)池(chi)(chi)，終(zhong)止(zhi)充電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)(ya)就是(shi)4.2～4.3V。

磷酸鐵鋰電池放(fang)電(dian)(dian)終(zhong)止電(dian)(dian)壓(ya)基(ji)本上都是3.3左(zuo)右，鋰(li)離子電(dian)(dian)池(chi)內部保(bao)(bao)護(hu)板放(fang)電(dian)(dian)保(bao)(bao)護(hu)電(dian)(dian)壓(ya)設(she)置基(ji)本上都是2.5v。這個(ge)鋰(li)離子電(dian)(dian)池(chi)放(fang)電(dian)(dian)終(zhong)止電(dian)(dian)壓(ya)究竟設(she)置多少合(he)適，按照(zhao)保(bao)(bao)護(hu)板的終(zhong)止電(dian)(dian)壓(ya)2.5難(nan)道不會影(ying)響鋰(li)離子電(dian)(dian)池(chi)容量(liang)性能(neng)，不會損(sun)傷鋰(li)離子電(dian)(dian)池(chi)。

隨著目前(qian)鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)工業的(de)(de)(de)(de)不斷發展，越來(lai)越多的(de)(de)(de)(de)設(she)備上都使用了鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)。除了市(shi)場上常見的(de)(de)(de)(de)消費類(lei)聚合物鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)外，三元鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)和磷(lin)酸鐵鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)市(shi)場占(zhan)比是(shi)較高的(de)(de)(de)(de)。常規來(lai)說三元鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)芯電(dian)(dian)(dian)(dian)壓為3.7伏，磷(lin)酸鐵鋰(li)電(dian)(dian)(dian)(dian)芯電(dian)(dian)(dian)(dian)壓為3.2伏，就小部(bu)分的(de)(de)(de)(de)鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)，磷(lin)酸鐵鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)價(jia)格(ge)可能要(yao)比三元鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)低(di)一些(xie)，但就大(da)容量的(de)(de)(de)(de)鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)來(lai)說，還是(shi)三元鋰(li)離(li)(li)(li)子(zi)(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)性價(jia)比較高。

不過就目前來說的話鋰(li)(li)離(li)子電(dian)池市(shi)場(chang)價格(ge)比較混亂，市(shi)場(chang)上的報(bao)價有(you)高有(you)低，所以(yi)大(da)家在(zai)選購(gou)產(chan)品(pin)的時候要注意。有(you)朋友問到，鋰(li)(li)離(li)子電(dian)池截止電(dian)壓是多少。就鋰(li)(li)離(li)子電(dian)池截止電(dian)壓來說，要看具體容量是多少，不同(tong)規格(ge)參數鋰(li)(li)離(li)子電(dian)池截止電(dian)壓價格(ge)不相同(tong)。

鋰離(li)子電(dian)(dian)池(chi)(chi)放電(dian)(dian)時(shi)(shi)，它的(de)(de)工作電(dian)(dian)壓(ya)(ya)總是隨著時(shi)(shi)間的(de)(de)延續而(er)不斷發(fa)生變化，用電(dian)(dian)池(chi)(chi)的(de)(de)工作電(dian)(dian)壓(ya)(ya)做縱坐(zuo)標，放電(dian)(dian)時(shi)(shi)間，或容量，或荷電(dian)(dian)狀態（SOC），或放電(dian)(dian)深(shen)度（DOD）做橫坐(zuo)標，繪制而(er)成的(de)(de)曲(qu)(qu)(qu)線(xian)稱為(wei)放電(dian)(dian)曲(qu)(qu)(qu)線(xian)。要(yao)認識電(dian)(dian)池(chi)(chi)的(de)(de)放電(dian)(dian)特(te)性曲(qu)(qu)(qu)線(xian)，首先要(yao)從原理上理解電(dian)(dian)池(chi)(chi)的(de)(de)電(dian)(dian)壓(ya)(ya)。

鋰離子電池的內阻(zu)隨電(dian)(dian)池(chi)放(fang)電(dian)(dian)電(dian)(dian)流(liu)(liu)的增大(da)(da)而增大(da)(da)，這重(zhong)要是由于大(da)(da)的放(fang)電(dian)(dian)電(dian)(dian)流(liu)(liu)使(shi)得電(dian)(dian)池(chi)的極化趨勢增大(da)(da)，并且放(fang)電(dian)(dian)電(dian)(dian)流(liu)(liu)越大(da)(da)，則極化的趨勢就越明顯(xian)。