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　　我們測試鋰電池容量主要原因是：看看廠家有沒有虛標容量、看看電池廠家的電池產品是否可靠、還有就是看看鋰電池實際容量是否能滿足設計的產品用電參數要求等。那么，鋰電池容量測試方法有哪些呢?

　　1、實際(ji)使用測試鋰電池容量的方法

　　鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)容(rong)量(liang)測試(shi)是以(yi)滿電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓和設定的終止電(dian)(dian)(dian)(dian)壓為參數的，因(yin)為鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)的最低(di)放(fang)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓是2.75V，所以(yi)，小于3V的電(dian)(dian)(dian)(dian)壓已經對鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)測試(shi)沒(mei)有意義;固定電(dian)(dian)(dian)(dian)流放(fang)電(dian)(dian)(dian)(dian)一般用多(duo)少C表示，鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)一般用0.5C放(fang)電(dian)(dian)(dian)(dian)進行測試(shi)。

　　把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)滿(man)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，單只鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)充(chong)(chong)滿(man)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后(hou)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓是4.2V;用萬用表是鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)恒流(liu)0.5C，相對(dui)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)(liang)而言放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，終止電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓設定為3v;用恒流(liu)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)時(shi)(shi)間乘(cheng)以放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)就是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)(liang)了;檢驗：如果(guo)恒流(liu)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)不能達到(dao)兩個小時(shi)(shi)，那(nei)么標稱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓就是不夠的(de)，鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)就有假冒(mao)偽劣(lie)的(de)可(ke)能性。有專業的(de)鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)分容柜如果(guo)是個人的(de)話，找(zhao)一個可(ke)調(diao)(diao)可(ke)調(diao)(diao)的(de)負載電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)和(he)一個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)可(ke)調(diao)(diao)的(de)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源來(lai)通過(guo)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)時(shi)(shi)間來(lai)計(ji)算電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)(liang)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)×充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間=電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)(liang)(從2.7V或(huo)3.0V充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)到(dao)4.2V)或(huo)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)×放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間=電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)(liang)。

　　2、使(shi)用公式計算(suan)估算(suan)鋰電(dian)池容量方法

　　鋰(li)電(dian)池(chi)(chi)的容量(liang)(liang)與(yu)型號尺寸有(you)關(guan)，取決于電(dian)池(chi)(chi)的厚度(du)、寬(kuan)度(du)與(yu)長度(du)。另外還與(yu)電(dian)池(chi)(chi)的材料及大小(xiao)有(you)關(guan)。聚合物鋰(li)電(dian)池(chi)(chi)容量(liang)(liang)的實(shi)際(ji)(ji)計算公式(shi)很復雜，與(yu)體積不(bu)是(shi)線性的關(guan)系。需要考慮到(dao)諸多的因素，如材料不(bu)同，對實(shi)際(ji)(ji)容量(liang)(liang)影響很大，尺寸越大，容量(liang)(liang)/體積比值也越大。

　　快(kuai)速估(gu)算(suan)聚(ju)合物電(dian)池的容量，常采用的估(gu)算(suan)公式(僅(jin)用估(gu)算(suan))：

　　容(rong)量=厚(hou)度*寬度*長度*K(K單位(wei)為(wei)mah/mm3)

　　K值的范圍為(wei)(0.07~0.11)，K值取決于材料工業和容(rong)量(liang)的大(da)小(xiao)，容(rong)量(liang)越大(da)，K值越大(da)，容(rong)量(liang)越小(xiao)，K值越小(xiao)(可(ke)以(yi)理解為(wei)尺寸越大(da)，K值越大(da))。實(shi)際計算，可(ke)以(yi)將K值默(mo)認為(wei)0.1。比如(ru)103450LP(厚10mm，寬(kuan)34mm，長50mm)，計算容(rong)量(liang)=10*34*50*0.1=1700，實(shi)際容(rong)量(liang)在1800mah以(yi)上(shang);比如(ru)603048LP(厚6mm，寬(kuan)30mm，長48mm)，計算容(rong)量(liang)=6*30*48*0.1=864，實(shi)際容(rong)量(liang)可(ke)以(yi)做到900mah。

　　以(yi)上(shang)是(shi)(shi)兩種簡(jian)單常用(yong)的(de)鋰電池(chi)(chi)容(rong)(rong)量(liang)測試(shi)方(fang)法(fa)，從準(zhun)確(que)度(du)上(shang)來看，很顯然(ran)第(di)一(yi)個(ge)方(fang)法(fa)測試(shi)出來的(de)鋰電池(chi)(chi)容(rong)(rong)量(liang)是(shi)(shi)比(bi)較準(zhun)確(que)的(de)，而第(di)二(er)個(ge)則要差些，畢竟是(shi)(shi)理論(lun)性的(de)估算，受影響因素比(bi)較多(duo)，而從方(fang)便性上(shang)來說，顯然(ran)第(di)二(er)個(ge)方(fang)法(fa)是(shi)(shi)更方(fang)便的(de)，因為基本是(shi)(shi)不(bu)用(yong)什么工(gong)具，只要知道鋰電池(chi)(chi)的(de)體積和K取值(一(yi)般(ban)不(bu)同(tong)的(de)廠(chang)(chang)家會有不(bu)同(tong)的(de)k值，主要是(shi)(shi)電池(chi)(chi)廠(chang)(chang)家生產鋰電池(chi)(chi)工(gong)藝水平和材料(liao)配方(fang)的(de)差別所致)，就可以(yi)快速的(de)估算鋰電池(chi)(chi)容(rong)(rong)量(liang)的(de)大概是(shi)(shi)多(duo)少了。