一、電芯為什么會劃分等級
從材料的角度上來看,電芯就是(shi)(shi)稀(xi)土+金(jin)屬+貴金(jin)屬,幾大電(dian)(dian)池廠(chang)家一(yi)直從中(zhong)國進口稀(xi)土(稀(xi)土主要的(de)(de)產(chan)地是(shi)(shi)中(zhong)國),由(you)于(yu)稀(xi)土是(shi)(shi)共生(sheng)礦,所(suo)以(yi)就算有(you)再精密的(de)(de)提純技術,每次生(sheng)產(chan)的(de)(de)材(cai)料(liao)都有(you)微(wei)弱的(de)(de)成(cheng)(cheng)分差(cha)異(yi)(主要是(shi)(shi)雜(za)質(zhi)),同(tong)時,關鍵材(cai)料(liao)-氧化鈷(gu)也有(you)它的(de)(de)特點,由(you)于(yu)氧化鈷(gu)存在(zai)微(wei)弱的(de)(de)放(fang)射(she)性而(er)且又存在(zai)半衰(shuai)期,同(tong)時對雜(za)質(zhi)特別(bie)敏感,那么,每次生(sheng)產(chan)出來的(de)(de)電(dian)(dian)芯,使用(yong)不同(tong)產(chan)地的(de)(de)稀(xi)土制成(cheng)(cheng)的(de)(de)材(cai)料(liao),質(zhi)量都有(you)差(cha)異(yi),雜(za)質(zhi)的(de)(de)微(wei)小區別(bie)足以(yi)影響到鋰晶格和氧化鈷(gu)的(de)(de)穩定,這也就是(shi)(shi)同(tong)一(yi)批電(dian)(dian)芯生(sheng)產(chan)出來,廠(chang)家必須分容量來標識的(de)(de)道理了(le)。
電(dian)(dian)(dian)(dian)芯(xin)(xin)廠家(jia)在生(sheng)產同一(yi)批電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的時(shi)(shi)候(hou)(hou),會(hui)(hui)(hui)根據電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的放(fang)電(dian)(dian)(dian)(dian)測試性能進行分(fen)(fen)類(lei),分(fen)(fen)為ABCD四類(lei),但(dan)是(shi)一(yi)般具體細(xi)分(fen)(fen)的只有(you)ABC三個等級(ji)(ji)。A=2000mah,B=2200mah,C=2400mah,D=2600mah,在電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)上打上ABCD的區分(fen)(fen)碼(ma),然后(hou)同時(shi)(shi)在電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)保護氣(qi)(qi)蓋(gai)的顏色(se)上進行區分(fen)(fen)(電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)在放(fang)電(dian)(dian)(dian)(dian)的時(shi)(shi)候(hou)(hou)會(hui)(hui)(hui)產氣(qi)(qi),電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)正(zheng)極有(you)一(yi)個保護蓋(gai),當電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)放(fang)氣(qi)(qi)到一(yi)定量的時(shi)(shi)候(hou)(hou),也就是(shi)快(kuai)達到設計壽(shou)命的時(shi)(shi)候(hou)(hou),氣(qi)(qi)體就會(hui)(hui)(hui)將蓋(gai)子給頂開,從(cong)而使電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)脫路),這個就是(shi)電(dian)(dian)(dian)(dian)芯(xin)(xin)等級(ji)(ji)ABCD的來源。
二、電芯的等級有哪些
電芯一般是(shi)用(yong)在(zai)數(shu)碼產品或者一下電(dian)動工具上面(mian)的(de),但是(shi)同時電(dian)芯是(shi)有分很多(duo)個等(deng)級,主要(yao)有以(yi)下級別(bie):
1、A級
容量、尺寸(cun)、內阻(zu)等參數均能夠(gou)達到標準且性能優良的電芯我(wo)們一般定義(yi)為A級
2、B級
生產過程(cheng)中容量、尺寸等參數存在(zai)較小的誤差(cha)或輕微瑕疵,但性能(neng)優良的電芯我們(men)一般定義為B級
3、C級
生產(chan)過程中容量、尺寸、內阻等一些(xie)(xie)(xie)參數不合格(ge),且性能存在一些(xie)(xie)(xie)問(wen)題的不良品(pin)電(dian)(dian)芯我(wo)們一般(ban)定義為(wei)C級;此(ci)類電(dian)(dian)芯價格(ge)便宜,一般(ban)用于一些(xie)(xie)(xie)山寨品(pin)牌產(chan)品(pin)上