一、電芯為什么會劃分等級
從材料的角度上來看,電芯就是稀(xi)(xi)土(tu)+金(jin)(jin)屬+貴金(jin)(jin)屬,幾(ji)大電池廠家一(yi)(yi)直從中國(guo)進(jin)口稀(xi)(xi)土(tu)(稀(xi)(xi)土(tu)主(zhu)要的(de)(de)(de)(de)(de)產(chan)地(di)是中國(guo)),由于稀(xi)(xi)土(tu)是共生(sheng)礦,所以(yi)就算有(you)再精密的(de)(de)(de)(de)(de)提純技(ji)術,每(mei)次(ci)生(sheng)產(chan)的(de)(de)(de)(de)(de)材料都有(you)微弱的(de)(de)(de)(de)(de)成(cheng)分(fen)差異(主(zhu)要是雜質),同(tong)(tong)時(shi),關鍵材料-氧(yang)化鈷也有(you)它的(de)(de)(de)(de)(de)特點,由于氧(yang)化鈷存(cun)在微弱的(de)(de)(de)(de)(de)放射性而且又存(cun)在半衰期,同(tong)(tong)時(shi)對雜質特別敏(min)感,那么,每(mei)次(ci)生(sheng)產(chan)出來(lai)的(de)(de)(de)(de)(de)電芯,使用不(bu)同(tong)(tong)產(chan)地(di)的(de)(de)(de)(de)(de)稀(xi)(xi)土(tu)制成(cheng)的(de)(de)(de)(de)(de)材料,質量都有(you)差異,雜質的(de)(de)(de)(de)(de)微小(xiao)區別足以(yi)影響到鋰晶格和(he)氧(yang)化鈷的(de)(de)(de)(de)(de)穩定,這也就是同(tong)(tong)一(yi)(yi)批(pi)電芯生(sheng)產(chan)出來(lai),廠家必須分(fen)容量來(lai)標識(shi)的(de)(de)(de)(de)(de)道理了。
電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)廠家(jia)在(zai)生產(chan)同一批電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)時(shi)候(hou),會(hui)根據電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)放電(dian)(dian)(dian)(dian)(dian)(dian)測試性能(neng)進(jin)行分(fen)類(lei),分(fen)為(wei)ABCD四類(lei),但是(shi)一般具體細分(fen)的(de)只有(you)ABC三個(ge)等級(ji)。A=2000mah,B=2200mah,C=2400mah,D=2600mah,在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)上(shang)打(da)上(shang)ABCD的(de)區分(fen)碼,然后(hou)同時(shi)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)保護氣(qi)(qi)蓋的(de)顏色上(shang)進(jin)行區分(fen)(電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)在(zai)放電(dian)(dian)(dian)(dian)(dian)(dian)的(de)時(shi)候(hou)會(hui)產(chan)氣(qi)(qi),電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)正極有(you)一個(ge)保護蓋,當電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)放氣(qi)(qi)到一定量的(de)時(shi)候(hou),也就是(shi)快(kuai)達到設計壽(shou)命的(de)時(shi)候(hou),氣(qi)(qi)體就會(hui)將(jiang)蓋子給頂開,從而使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)脫(tuo)路),這個(ge)就是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)等級(ji)ABCD的(de)來源。
二、電芯的等級有哪些
電芯一般是(shi)用(yong)在數碼(ma)產品或者一下電(dian)動(dong)工(gong)具上(shang)面(mian)的,但是(shi)同時電(dian)芯(xin)是(shi)有分很多個等級,主要(yao)有以下級別(bie):
1、A級
容(rong)量、尺寸、內阻等參數(shu)均能(neng)夠達(da)到標準且(qie)性能(neng)優良(liang)的電芯(xin)我們一般定(ding)義為A級
2、B級
生產過程(cheng)中容量、尺(chi)寸(cun)等參數存在(zai)較小的(de)誤差或輕微瑕疵,但性能優(you)良的(de)電芯我們一般定義為(wei)B級
3、C級
生產(chan)過程中容量、尺寸、內阻等一(yi)些參數不合格(ge),且性能存在(zai)一(yi)些問題(ti)的不良品(pin)(pin)電芯我們(men)一(yi)般定義(yi)為(wei)C級;此類電芯價(jia)格(ge)便宜,一(yi)般用(yong)于(yu)一(yi)些山寨品(pin)(pin)牌產(chan)品(pin)(pin)上