在鋰電池組中，多個鋰電芯通過串(chuan)聯并聯的方式(shi)連接，以獲得所需(xu)的足夠大的工作電(dian)壓(ya)。 如(ru)果您(nin)需(xu)要更(geng)高的容量(liang)和更(geng)大的電(dian)流(liu)，您(nin)應(ying)該并聯連接鋰電(dian)芯(xin)，鋰電(dian)池組(zu)裝設備的老化柜通過組(zu)合串(chuan)聯和并聯兩種(zhong)方法可以知道(dao)高電(dian)壓(ya)和高容量(liang)標(biao)準。

1、鋰電池串并聯方法

鋰電池并聯：電壓不變，電池容量相加，內阻減小，可供電時間延長
鋰電池串(chuan)聯：電壓相加(jia)，容量不變(bian)

并聯(lian)(lian)連接為了(le)獲(huo)得更(geng)多(duo)電(dian)(dian)(dian)(dian)量，可以并聯(lian)(lian)多(duo)個電(dian)(dian)(dian)(dian)池(chi)。 除(chu)了(le)并聯(lian)(lian)電(dian)(dian)(dian)(dian)池(chi)之外，另一種選擇是使用(yong)更(geng)大(da)(da)的(de)電(dian)(dian)(dian)(dian)池(chi)，因(yin)為可以使用(yong)的(de)電(dian)(dian)(dian)(dian)池(chi)有限， 此方(fang)法不適(shi)用(yong)于所有應用(yong)程序。 此外，大(da)(da)尺寸電(dian)(dian)(dian)(dian)池(chi)不適(shi)合專用(yong)電(dian)(dian)(dian)(dian)池(chi)所需的(de)形(xing)狀因(yin)數(shu)。 大(da)(da)多(duo)數(shu)化學(xue)電(dian)(dian)(dian)(dian)池(chi)可以并聯(lian)(lian)使用(yong)，鋰電(dian)(dian)(dian)(dian)池(chi)最適(shi)合并聯(lian)(lian)使用(yong)。

例如(ru)，五個電(dian)(dian)池(chi)(chi)的并聯連接的電(dian)(dian)池(chi)(chi)電(dian)(dian)壓保持(chi)在(zai)3.6V，并且電(dian)(dian)流和運行時(shi)間增(zeng)加五倍。 高(gao)阻抗或(huo)“開放”電(dian)(dian)池(chi)(chi)對(dui)電(dian)(dian)池(chi)(chi)并聯電(dian)(dian)路的影響小于與電(dian)(dian)池(chi)(chi)串聯的影響，但是，并聯電(dian)(dian)池(chi)(chi)組可(ke)降低負載容量(liang)并縮短運行時(shi)間。

采用串并聯(lian)連接方式時，設(she)計(ji)靈(ling)活(huo)可(ke)(ke)(ke)以(yi)達到標準電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)尺寸所需(xu)的額定電(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)流(liu)。 應注意(yi)，由于(yu)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)點焊機生(sheng)產鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的不同連接方法，總功(gong)率(lv)不會(hui)改變。 功(gong)率(lv)等于(yu)電(dian)(dian)(dian)(dian)壓乘以(yi)電(dian)(dian)(dian)(dian)流(liu)，對(dui)于(yu)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)，串聯(lian)并聯(lian)連接方法很常(chang)見(jian)。 其中最(zui)常(chang)用的電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)組(zu)是18650鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)，它有一個(ge)保護電(dian)(dian)(dian)(dian)路，一個(ge)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)保護板。 鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)保護板可(ke)(ke)(ke)以(yi)監控串聯(lian)的每個(ge)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)，因此其最(zui)大實際電(dian)(dian)(dian)(dian)壓為42V。 該鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)保護電(dian)(dian)(dian)(dian)路（即鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)保護板）也可(ke)(ke)(ke)用于(yu)監控串聯(lian)連接的每個(ge)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的狀態。

當串聯使用18650鋰(li)電池(chi)時，必(bi)須(xu)遵循以下基本要求(qiu)：電壓應(ying)(ying)保持(chi)(chi)一致(zhi)，內阻(zu)不應(ying)(ying)超(chao)過5毫歐，容量差(cha)不應(ying)(ying)超(chao)過10毫安(an)。 另(ling)一種是保持(chi)(chi)電池(chi)的(de)連(lian)接點(dian)清(qing)潔， 每(mei)個連(lian)接點(dian)都有(you)一定的(de)阻(zu)力。 如果連(lian)接點(dian)不干凈或(huo)連(lian)接點(dian)增(zeng)加，則(ze)內部電阻(zu)可(ke)能很高，這可(ke)能會影響整個鋰(li)電池(chi)組的(de)性能。

2、鋰電池串并聯(lian)注意事項

一般(ban)鋰(li)電(dian)池(chi)串并聯使(shi)用需要進行(xing)鋰(li)電(dian)池(chi)芯(xin)(xin)(xin)配對，配對的標(biao)準：鋰(li)電(dian)池(chi)芯(xin)(xin)(xin)電(dian)壓差≤10mV，鋰(li)電(dian)池(chi)芯(xin)(xin)(xin)內阻差≤5mΩ，鋰(li)電(dian)池(chi)芯(xin)(xin)(xin)容量差≤20mA。

電(dian)池(chi)(chi)并聯(lian)(lian)時必須用同(tong)種電(dian)池(chi)(chi)。不(bu)同(tong)電(dian)池(chi)(chi)的(de)電(dian)壓不(bu)同(tong)，并聯(lian)(lian)后，電(dian)壓高(gao)的(de)電(dian)池(chi)(chi)對電(dian)壓低的(de)電(dian)池(chi)(chi)充電(dian)，消耗了電(dian)能。

電(dian)(dian)(dian)池(chi)(chi)串(chuan)聯時(shi)也應(ying)該使用相(xiang)同的電(dian)(dian)(dian)池(chi)(chi)。否(fou)則不(bu)同容(rong)(rong)(rong)量(liang)(liang)(liang)的電(dian)(dian)(dian)池(chi)(chi)串(chuan)聯后(比如同種電(dian)(dian)(dian)池(chi)(chi)新舊程度不(bu)同)，容(rong)(rong)(rong)量(liang)(liang)(liang)小的電(dian)(dian)(dian)池(chi)(chi)先放光電(dian)(dian)(dian)，內阻增高，此時(shi)容(rong)(rong)(rong)量(liang)(liang)(liang)大(da)的電(dian)(dian)(dian)池(chi)(chi)就會(hui)通過小容(rong)(rong)(rong)量(liang)(liang)(liang)電(dian)(dian)(dian)池(chi)(chi)的內阻放電(dian)(dian)(dian)，消(xiao)耗(hao)電(dian)(dian)(dian)能，還會(hui)對它進行反充電(dian)(dian)(dian)。這(zhe)樣負(fu)載上的電(dian)(dian)(dian)壓就會(hui)極大(da)降低，無法(fa)工作(zuo)，容(rong)(rong)(rong)量(liang)(liang)(liang)大(da)的電(dian)(dian)(dian)池(chi)(chi)只相(xiang)當于小容(rong)(rong)(rong)量(liang)(liang)(liang)的電(dian)(dian)(dian)池(chi)(chi)。