在我們做鋰電池組裝的時候一直強調“一致性”，這個鋰電池pack過程中的一致性是指哪些呢？又有什(shen)么(me)樣的數字(zi)差要求呢？下面就讓我們一起來討論(lun)一下吧：

1、鋰(li)電(dian)池組pack的容量一致性標準

每(mei)顆電(dian)芯的容量(liang)大小(xiao)要(yao)盡量(liang)一樣，誤差越小(xiao)越好，同時每(mei)顆電(dian)芯放(fang)電(dian)容量(liang)不低于額定容量(liang)95%。

2、恒流比的一致性

電(dian)芯在(zai)工作(zuo)時(shi)放電(dian)電(dian)流(liu)和充電(dian)時(shi)電(dian)流(liu)的(de)恒流(liu)比值(zhi)不小于93%；

3、放電平臺的一致性

電池組在放(fang)電時(shi)各個電芯的放(fang)電平臺電壓曲(qu)線或(huo)下降的速度誤差(cha)越小(xiao)越好；

4、電芯自放電的一致性

這個是指電池組(zu)在(zai)(zai)不工作時(shi)(shi)，也就是不搭載(zai)負載(zai)時(shi)(shi)的(de)(de)自我耗(hao)電情況，在(zai)(zai)這樣(yang)的(de)(de)情況下，自放(fang)電電流大小(xiao)方面(mian)盡可能的(de)(de)縮小(xiao)，同時(shi)(shi)耗(hao)電停止的(de)(de)電壓數字(zi)差越小(xiao)越好；

5、電池組(zu)電芯間的內阻大小的一致性

所謂的(de)內阻(zu)就是指每個(ge)電芯的(de)電阻(zu)大小，它們的(de)誤差越小，說(shuo)明電芯一致性較好，組(zu)裝出來的(de)電池組(zu)質量(liang)就越好。

6、電池組電芯間電壓壓差越(yue)小越(yue)好

鋰電(dian)(dian)(dian)(dian)池組的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)芯(xin)之間是(shi)存(cun)在(zai)(zai)壓(ya)(ya)(ya)(ya)差的(de)(de)(de)(de)，所(suo)謂的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)差就是(shi)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)大小(xiao)有(you)一定(ding)的(de)(de)(de)(de)大小(xiao)不同，電(dian)(dian)(dian)(dian)芯(xin)壓(ya)(ya)(ya)(ya)差的(de)(de)(de)(de)存(cun)在(zai)(zai)或導致(zhi)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)高的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)芯(xin)向(xiang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)低(di)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)芯(xin)進行充(chong)(chong)電(dian)(dian)(dian)(dian)，工作(zuo)放電(dian)(dian)(dian)(dian)是(shi)是(shi)以最低(di)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)芯(xin)放電(dian)(dian)(dian)(dian)完后(hou)電(dian)(dian)(dian)(dian)池組就不工作(zuo)了，而(er)在(zai)(zai)充(chong)(chong)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)時候(hou)，充(chong)(chong)滿(man)電(dian)(dian)(dian)(dian)時是(shi)以最高電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)芯(xin)為準(zhun)的(de)(de)(de)(de)，這樣會導致(zhi)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)低(di)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)芯(xin)發生過充(chong)(chong)的(de)(de)(de)(de)危害。所(suo)以在(zai)(zai)做電(dian)(dian)(dian)(dian)池組pack時，要盡量選擇(ze)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)壓(ya)(ya)(ya)(ya)差越小(xiao)就越好。

鋰電(dian)池pack要注意的(de)重要事項(xiang)：使(shi)(shi)用同(tong)一(yi)(yi)個檔(dang)(dang)次的(de)電(dian)芯(xin)組裝(zhuang)，當某一(yi)(yi)批(pi)次該檔(dang)(dang)次的(de)電(dian)芯(xin)數量(liang)不夠時(shi)，使(shi)(shi)用相(xiang)鄰批(pi)欠同(tong)檔(dang)(dang)電(dian)壓同(tong)檔(dang)(dang)容量(liang)的(de)電(dian)芯(xin)補足缺額。嚴禁(jin)不同(tong)電(dian)壓、不同(tong)內阻檔(dang)(dang)次電(dian)芯(xin)用于同(tong)一(yi)(yi)電(dian)池組的(de)組裝(zhuang)。