鋰電池停止放電(dian)(dian)(dian)(dian)的(de)電(dian)(dian)(dian)(dian)壓(ya)是(shi)(shi)多少，這個主要是(shi)(shi)由鋰(li)電(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)的(de)工作性能決定的(de),也就是(shi)(shi)由其截(jie)止電(dian)(dian)(dian)(dian)壓(ya)是(shi)(shi)多少來(lai)決定的(de)?鋰(li)電(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)終止電(dian)(dian)(dian)(dian)壓(ya)是(shi)(shi)指鋰(li)電(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)都某一電(dian)(dian)(dian)(dian)壓(ya)后，不宜再(zai)繼續放電(dian)(dian)(dian)(dian)，否則會造成鋰(li)電(dian)(dian)(dian)(dian)池(chi)部(bu)分電(dian)(dian)(dian)(dian)量不可逆損(sun)失，嚴重的(de)會徹底損(sun)壞電(dian)(dian)(dian)(dian)池(chi)。現在的(de)單支鋰(li)電(dian)(dian)(dian)(dian)池(chi)標稱電(dian)(dian)(dian)(dian)壓(ya)一般設(she)計為3.7V，終止電(dian)(dian)(dian)(dian)壓(ya)為2.75V。

鋰(li)電(dian)池放電(dian)截(jie)止電(dian)壓是多少(shao)？

一般鋰電工作電壓3.7V,終止電壓3.2V；磷酸鐵鋰電池工作電(dian)(dian)壓(ya)(ya)(ya)3.26V,終止(zhi)電(dian)(dian)壓(ya)(ya)(ya)2.5V。鋰電(dian)(dian)池(chi)充滿電(dian)(dian)的(de)電(dian)(dian)壓(ya)(ya)(ya)，業(ye)內稱(cheng)作“終止(zhi)充電(dian)(dian)電(dian)(dian)壓(ya)(ya)(ya)”。根據電(dian)(dian)池(chi)工業(ye)標準，該電(dian)(dian)壓(ya)(ya)(ya)為額定電(dian)(dian)壓(ya)(ya)(ya)值的(de)1.2倍左(zuo)右。如3.6V的(de)手機電(dian)(dian)池(chi)，終止(zhi)充電(dian)(dian)電(dian)(dian)壓(ya)(ya)(ya)就是4.2～4.3V。

鐵鋰(li)電(dian)(dian)池(chi)(chi)放電(dian)(dian)終止(zhi)電(dian)(dian)壓(ya)基本(ben)上都(dou)是3.3左右(you)，鋰(li)電(dian)(dian)池(chi)(chi)內部保(bao)護板放電(dian)(dian)保(bao)護電(dian)(dian)壓(ya)設(she)(she)置基本(ben)上都(dou)是2.5v。這(zhe)個(ge)鋰(li)電(dian)(dian)池(chi)(chi)放電(dian)(dian)終止(zhi)電(dian)(dian)壓(ya)究竟設(she)(she)置多少(shao)合適，按照保(bao)護板的終止(zhi)電(dian)(dian)壓(ya)2.5難道(dao)不會影響鋰(li)電(dian)(dian)池(chi)(chi)容量性能，不會損傷鋰(li)電(dian)(dian)池(chi)(chi)。

鋰電池放電終止電壓(ya)的工(gong)作(zuo)原理

鋰電(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)終(zhong)(zhong)止(zhi)(zhi)電(dian)(dian)(dian)壓(ya)是關系(xi)(xi)到(dao)鋰電(dian)(dian)(dian)池(chi)使用壽(shou)命(ming)的(de)(de)一(yi)個重(zhong)要應(ying)用參數(shu)。現在的(de)(de)單支鋰電(dian)(dian)(dian)池(chi)標稱電(dian)(dian)(dian)壓(ya)一(yi)般設計(ji)為(wei)3.7V，終(zhong)(zhong)止(zhi)(zhi)電(dian)(dian)(dian)壓(ya)為(wei)2.75V，有(you)兩(liang)種情況(kuang)使廠家將終(zhong)(zhong)止(zhi)(zhi)電(dian)(dian)(dian)壓(ya)上(shang)限提高到(dao)3.0V，一(yi)是鋰電(dian)(dian)(dian)池(chi)材料決定(ding)(ding)的(de)(de)電(dian)(dian)(dian)化(hua)學性質，這往往是從更(geng)加安全使用電(dian)(dian)(dian)池(chi)的(de)(de)角度考慮；二是與(yu)特定(ding)(ding)的(de)(de)用電(dian)(dian)(dian)產(chan)品和(he)用電(dian)(dian)(dian)環境相聯系(xi)(xi)。當然(ran)，也有(you)相反(fan)的(de)(de)情況(kuang)，可以把終(zhong)(zhong)止(zhi)(zhi)電(dian)(dian)(dian)壓(ya)設計(ji)更(geng)低，如2.5V和(he)2.4V，但是沒有(you)低于2.4V的(de)(de)了。

如果放電(dian)時的(de)工作溫度是在-20~60℃范(fan)圍內，終止電(dian)壓為2.75V的(de)鋰電(dian)池其(qi)實(shi)也可以繼續放電(dian)，但(dan)絕對不(bu)能低于(yu)2.5V，正如前面所(suo)說，在2.75V~2.5V之間的(de)損(sun)失可能是部分的(de)，而在2.5V以下(xia)就會(hui)造成最嚴重的(de)破壞，使電(dian)池不(bu)能用。

鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)也有(you)終止電(dian)(dian)(dian)(dian)壓，這(zhe)種(zhong)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)有(you)時被稱為“芯(xin)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)”，“芯(xin)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)”的放電(dian)(dian)(dian)(dian)終止電(dian)(dian)(dian)(dian)壓不(bu)應小于2.75×n（n為串聯電(dian)(dian)(dian)(dian)池(chi)(chi)數），以筆記本電(dian)(dian)(dian)(dian)腦最為常(chang)用(yong)的6芯(xin)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)為例，這(zhe)種(zhong)6芯(xin)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)常(chang)常(chang)采用(yong)3串2并的組(zu)合方式，因此，這(zhe)種(zhong)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)放電(dian)(dian)(dian)(dian)截止電(dian)(dian)(dian)(dian)壓為2.75V×3=8.25V，實用(yong)中最低不(bu)能低于2.5V×3=7.5V。

事(shi)實上，由于(yu)鋰電(dian)池價(jia)格相對(dui)較(jiao)為昂貴(gui)，因而，無論是(shi)單支鋰電(dian)池還是(shi)多芯(xin)鋰電(dian)池都帶有保護板或保護IC，當電(dian)池電(dian)壓到達終止電(dian)壓后，電(dian)池都會通過用電(dian)器具發出(chu)一定的信號，使(shi)用者謹(jin)記操作(zuo)方法(fa)。

隨(sui)著目前鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)工業的(de)不斷發展，越來(lai)越多的(de)設備上都使(shi)用了鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)。除了市場(chang)上常(chang)見的(de)消費類聚合物鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)外，三(san)(san)元鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)和磷(lin)(lin)酸(suan)鐵(tie)(tie)鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)市場(chang)占比(bi)是(shi)較高(gao)的(de)。常(chang)規來(lai)說(shuo)(shuo)三(san)(san)元鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)電(dian)(dian)(dian)芯電(dian)(dian)(dian)壓為3.7伏，磷(lin)(lin)酸(suan)鐵(tie)(tie)鋰(li)(li)電(dian)(dian)(dian)芯電(dian)(dian)(dian)壓為3.2伏，就(jiu)小部分的(de)鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)組(zu)，磷(lin)(lin)酸(suan)鐵(tie)(tie)鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)價格可能(neng)要比(bi)三(san)(san)元鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)低一些，但就(jiu)大容量的(de)鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)組(zu)來(lai)說(shuo)(shuo)，還是(shi)三(san)(san)元鋰(li)(li)電(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)性價比(bi)較高(gao)。

不過就目前(qian)來說的話鋰電(dian)池市場價(jia)格(ge)比較混亂(luan)，市場上的報價(jia)有(you)高有(you)低，所以(yi)大(da)家(jia)在選購(gou)產品的時候要(yao)注意。有(you)朋友(you)問到，鋰電(dian)池截(jie)止(zhi)電(dian)壓(ya)(ya)(ya)是多少。就鋰電(dian)池截(jie)止(zhi)電(dian)壓(ya)(ya)(ya)來說，要(yao)看具體容量是多少，不同規(gui)格(ge)參數鋰電(dian)池截(jie)止(zhi)電(dian)壓(ya)(ya)(ya)價(jia)格(ge)不一樣。