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，鋰電池組(zu)裝設備的老化柜通過組(zu)合串聯(lian)和并(bing)聯(lian)兩種(zhong)方法(fa)可(ke)以知道高(gao)電壓和高(gao)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，容量不變

并聯連接為了(le)獲(huo)得更(geng)多(duo)電(dian)量，可(ke)以(yi)并聯多(duo)個電(dian)池。 除了(le)并聯電(dian)池之外(wai)，另一種選擇是使用(yong)(yong)更(geng)大(da)(da)的(de)電(dian)池，因(yin)為可(ke)以(yi)使用(yong)(yong)的(de)電(dian)池有限， 此方(fang)法不適(shi)(shi)(shi)用(yong)(yong)于所有應用(yong)(yong)程(cheng)序。 此外(wai)，大(da)(da)尺寸電(dian)池不適(shi)(shi)(shi)合專(zhuan)用(yong)(yong)電(dian)池所需的(de)形狀因(yin)數(shu)。 大(da)(da)多(duo)數(shu)化學電(dian)池可(ke)以(yi)并聯使用(yong)(yong)，鋰電(dian)池最適(shi)(shi)(shi)合并聯使用(yong)(yong)。

例如，五(wu)個電(dian)(dian)池(chi)(chi)的(de)并(bing)聯連接(jie)的(de)電(dian)(dian)池(chi)(chi)電(dian)(dian)壓(ya)保持在3.6V，并(bing)且電(dian)(dian)流和運行時間增加(jia)五(wu)倍。 高阻(zu)抗或(huo)“開放”電(dian)(dian)池(chi)(chi)對電(dian)(dian)池(chi)(chi)并(bing)聯電(dian)(dian)路的(de)影響小于與(yu)電(dian)(dian)池(chi)(chi)串聯的(de)影響，但是，并(bing)聯電(dian)(dian)池(chi)(chi)組可(ke)降低負載(zai)容量并(bing)縮(suo)短運行時間。

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)(bao)護(hu)電(dian)(dian)(dian)(dian)路，一個(ge)(ge)鋰(li)電(dian)(dian)(dian)(dian)池保(bao)(bao)(bao)護(hu)板(ban)(ban)。 鋰(li)電(dian)(dian)(dian)(dian)池保(bao)(bao)(bao)護(hu)板(ban)(ban)可以(yi)監(jian)控(kong)串(chuan)聯(lian)的每(mei)個(ge)(ge)電(dian)(dian)(dian)(dian)池，因此其最大實際電(dian)(dian)(dian)(dian)壓為42V。 該鋰(li)電(dian)(dian)(dian)(dian)池保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)(dian)路（即鋰(li)電(dian)(dian)(dian)(dian)池保(bao)(bao)(bao)護(hu)板(ban)(ban)）也可用于監(jian)控(kong)串(chuan)聯(lian)連(lian)接的每(mei)個(ge)(ge)電(dian)(dian)(dian)(dian)池的狀態。

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(zhong)是保持電(dian)池的(de)連接(jie)(jie)(jie)點清潔， 每(mei)個(ge)連接(jie)(jie)(jie)點都(dou)有一定的(de)阻力。 如(ru)果(guo)連接(jie)(jie)(jie)點不干凈或(huo)連接(jie)(jie)(jie)點增(zeng)加，則內部電(dian)阻可能(neng)(neng)很高，這(zhe)可能(neng)(neng)會(hui)影響整個(ge)鋰電(dian)池組的(de)性(xing)能(neng)(neng)。

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)(dian)池(chi)并聯時(shi)必須(xu)用(yong)同(tong)種電(dian)(dian)(dian)池(chi)。不同(tong)電(dian)(dian)(dian)池(chi)的(de)(de)電(dian)(dian)(dian)壓不同(tong)，并聯后，電(dian)(dian)(dian)壓高的(de)(de)電(dian)(dian)(dian)池(chi)對電(dian)(dian)(dian)壓低的(de)(de)電(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)，消耗(hao)了電(dian)(dian)(dian)能。

電(dian)(dian)(dian)池(chi)串聯(lian)時也應該使用(yong)相同(tong)(tong)的(de)(de)(de)電(dian)(dian)(dian)池(chi)。否則不同(tong)(tong)容量的(de)(de)(de)電(dian)(dian)(dian)池(chi)串聯(lian)后(比如同(tong)(tong)種電(dian)(dian)(dian)池(chi)新舊程度不同(tong)(tong))，容量小(xiao)的(de)(de)(de)電(dian)(dian)(dian)池(chi)先(xian)放(fang)光電(dian)(dian)(dian)，內阻增(zeng)高，此時容量大的(de)(de)(de)電(dian)(dian)(dian)池(chi)就(jiu)(jiu)會通(tong)過小(xiao)容量電(dian)(dian)(dian)池(chi)的(de)(de)(de)內阻放(fang)電(dian)(dian)(dian)，消耗電(dian)(dian)(dian)能，還會對(dui)它進行反充電(dian)(dian)(dian)。這樣負載上的(de)(de)(de)電(dian)(dian)(dian)壓就(jiu)(jiu)會極大降低，無法工作，容量大的(de)(de)(de)電(dian)(dian)(dian)池(chi)只相當(dang)于小(xiao)容量的(de)(de)(de)電(dian)(dian)(dian)池(chi)。