在鋰電池組中，多個鋰電池串聯連接以獲得所需的工作電壓。 如果您需要更高的容量和更大的電流，您應該并聯連接動力鋰電池，鋰電(dian)池組(zu)裝設備的老化柜通過組(zu)合(he)串聯和并聯兩種方法可以知道(dao)高電(dian)壓和高容量標準(zhun)。

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
鋰電池串聯：電壓相加，容量(liang)不變(bian)

并聯連接為了(le)獲得(de)更多(duo)電(dian)(dian)(dian)量，可以并(bing)(bing)(bing)聯(lian)多(duo)個(ge)電(dian)(dian)(dian)池(chi)(chi)(chi)。 除了(le)并(bing)(bing)(bing)聯(lian)電(dian)(dian)(dian)池(chi)(chi)(chi)之外，另一種選擇(ze)是使用(yong)更大的(de)電(dian)(dian)(dian)池(chi)(chi)(chi)，因為可以使用(yong)的(de)電(dian)(dian)(dian)池(chi)(chi)(chi)有限， 此方法不(bu)適用(yong)于(yu)所有應用(yong)程(cheng)序。 此外，大尺寸(cun)電(dian)(dian)(dian)池(chi)(chi)(chi)不(bu)適合專(zhuan)用(yong)電(dian)(dian)(dian)池(chi)(chi)(chi)所需的(de)形狀因數。 大多(duo)數化學電(dian)(dian)(dian)池(chi)(chi)(chi)可以并(bing)(bing)(bing)聯(lian)使用(yong)，鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)最適合并(bing)(bing)(bing)聯(lian)使用(yong)。

例(li)如，五(wu)個電(dian)(dian)池(chi)(chi)(chi)的并聯連接的電(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)壓保持在3.6V，并且電(dian)(dian)流和運行(xing)時(shi)間(jian)增加五(wu)倍。 高(gao)阻抗或“開(kai)放”電(dian)(dian)池(chi)(chi)(chi)對電(dian)(dian)池(chi)(chi)(chi)并聯電(dian)(dian)路的影響(xiang)小于與電(dian)(dian)池(chi)(chi)(chi)串聯的影響(xiang)，但(dan)是(shi)，并聯電(dian)(dian)池(chi)(chi)(chi)組可降(jiang)低負載(zai)容量并縮短運行(xing)時(shi)間(jian)。

采用串并聯連接方式時，設計靈活可以達到標準電池尺寸所需的額定電壓和電流。 應注意，由于鋰電池點焊機生產鋰電池的不同連接方法，總功率不會改變。 功率等于電壓乘以電流，對于鋰電池，串聯并聯連接方法很常見。 其中最常用的電池組是18650鋰電池，它有一個(ge)(ge)保(bao)(bao)護電(dian)(dian)(dian)路(lu)，一個(ge)(ge)鋰(li)電(dian)(dian)(dian)池(chi)(chi)保(bao)(bao)護板(ban)(ban)。 鋰(li)電(dian)(dian)(dian)池(chi)(chi)保(bao)(bao)護板(ban)(ban)可以監控(kong)串聯(lian)的每(mei)個(ge)(ge)電(dian)(dian)(dian)池(chi)(chi)，因此(ci)其最大實際電(dian)(dian)(dian)壓為42V。 該鋰(li)電(dian)(dian)(dian)池(chi)(chi)保(bao)(bao)護電(dian)(dian)(dian)路(lu)（即鋰(li)電(dian)(dian)(dian)池(chi)(chi)保(bao)(bao)護板(ban)(ban)）也(ye)可用(yong)于(yu)監控(kong)串聯(lian)連接的每(mei)個(ge)(ge)電(dian)(dian)(dian)池(chi)(chi)的狀態。

當串聯使用18650鋰電池時，必須遵循以下基本要求：電壓應保持一致，內阻不應超過5毫歐，容量差不應超過10毫安。 另(ling)一種是保(bao)持(chi)電(dian)池(chi)的連(lian)接(jie)點(dian)(dian)清潔， 每個連(lian)接(jie)點(dian)(dian)都有一定(ding)的阻(zu)力。 如果連(lian)接(jie)點(dian)(dian)不干凈(jing)或連(lian)接(jie)點(dian)(dian)增加(jia)，則內部(bu)電(dian)阻(zu)可能很(hen)高，這可能會(hui)影響整個鋰電(dian)池(chi)組的性能。

2、鋰電池串并聯注意事項

一般鋰電池串并聯使用需要進行鋰電池芯配對，配對的標準：鋰電池芯電壓差≤10mV，鋰電池芯內阻差≤5mΩ，鋰電池芯容量差≤20mA。

電(dian)(dian)池并聯(lian)時必須用同(tong)種電(dian)(dian)池。不同(tong)電(dian)(dian)池的電(dian)(dian)壓(ya)不同(tong)，并聯(lian)后(hou)，電(dian)(dian)壓(ya)高的電(dian)(dian)池對(dui)電(dian)(dian)壓(ya)低的電(dian)(dian)池充電(dian)(dian)，消耗了電(dian)(dian)能。

電(dian)池串(chuan)聯時(shi)也應該使用相同(tong)(tong)的電(dian)池。否(fou)則(ze)不同(tong)(tong)容(rong)(rong)量(liang)的電(dian)池串(chuan)聯后(比如同(tong)(tong)種電(dian)池新舊程度不同(tong)(tong))，容(rong)(rong)量(liang)小的電(dian)池先放(fang)光電(dian)，內阻(zu)增(zeng)高(gao)，此時(shi)容(rong)(rong)量(liang)大(da)的電(dian)池就(jiu)會通過小容(rong)(rong)量(liang)電(dian)池的內阻(zu)放(fang)電(dian)，消耗電(dian)能，還會對它進行反充電(dian)。這(zhe)樣負載上(shang)的電(dian)壓就(jiu)會極大(da)降低，無法工作，容(rong)(rong)量(liang)大(da)的電(dian)池只相當于小容(rong)(rong)量(liang)的電(dian)池。