一、電動車鉛酸電池改鋰電池可以嗎

鉛酸電池電動車可以改鋰電池，但是不建議更換(huan)。具體原因如下：

1、新國標出臺后(hou)，對電(dian)動(dong)(dong)車的各項標準有了(le)嚴格(ge)規定，這(zhe)意味著(zhu)對電(dian)動(dong)(dong)車檢測將(jiang)更(geng)加嚴格(ge)。如果(guo)自己將(jiang)鉛酸電(dian)池更(geng)換為鋰電(dian)池，很(hen)有可能面臨無(wu)法上牌的風(feng)險。

2、如果將鉛(qian)酸電池更換為(wei)鋰電池，還必須(xu)將電壓保持與原(yuan)鉛(qian)酸電池相同。此外，充電器也(ye)得(de)更換為(wei)專用(yong)的鋰電充電器。

3、將鉛(qian)酸電(dian)(dian)(dian)池(chi)(chi)更換為鋰電(dian)(dian)(dian)池(chi)(chi)，需(xu)要考慮電(dian)(dian)(dian)池(chi)(chi)倉(cang)的(de)大(da)小。一般情況下鉛(qian)酸電(dian)(dian)(dian)池(chi)(chi)倉(cang)都相(xiang)對較(jiao)大(da)，而鋰電(dian)(dian)(dian)池(chi)(chi)的(de)體積都相(xiang)對較(jiao)小。

4、鋰電池與鉛酸電池相比，其穩定性更加(jia)差，如果遇(yu)水(shui)或(huo)者操作不(bu)當，很(hen)容易發生爆炸的風險(xian)。

二、電動車鉛酸電池怎么更換鋰電池

電(dian)動(dong)車的(de)鉛酸電(dian)池更換成(cheng)鋰(li)電(dian)池應該注意如下幾個方面：

1、了解自己當下電(dian)(dian)(dian)動(dong)車使(shi)用的(de)(de)電(dian)(dian)(dian)池(chi)是什么電(dian)(dian)(dian)池(chi)，電(dian)(dian)(dian)池(chi)的(de)(de)放電(dian)(dian)(dian)容(rong)量、倍率（最大放電(dian)(dian)(dian)是多少）。建議更換的(de)(de)鋰電(dian)(dian)(dian)池(chi)在放電(dian)(dian)(dian)方面與電(dian)(dian)(dian)動(dong)車原裝電(dian)(dian)(dian)池(chi)一樣。

2、了(le)解電(dian)動(dong)(dong)車(che)電(dian)機最(zui)大(da)允許功(gong)(gong)率(lv)是多少，建議鋰電(dian)池放電(dian)功(gong)(gong)率(lv)最(zui)大(da)應該低于電(dian)動(dong)(dong)車(che)電(dian)機最(zui)大(da)允許功(gong)(gong)率(lv)，防止電(dian)機燒壞。

3、了解電(dian)動車(che)接線電(dian)線規格，查看電(dian)線允許通過的最(zui)大電(dian)流，防(fang)止(zhi)電(dian)流過大燒毀電(dian)線。

4、了解(jie)電(dian)(dian)動車其他(ta)電(dian)(dian)子元器件電(dian)(dian)流(liu)(liu)(liu)允許(xu)限(xian)(xian)值，建議電(dian)(dian)流(liu)(liu)(liu)應小于允許(xu)的(de)限(xian)(xian)流(liu)(liu)(liu)值。

5、鋰(li)電(dian)池(chi)(chi)外觀尺寸大小(xiao)，一(yi)般來說，一(yi)樣容量和放(fang)電(dian)的(de)鋰(li)電(dian)池(chi)(chi)要比鉛酸電(dian)池(chi)(chi)小(xiao)很(hen)多，因此(ci)電(dian)動(dong)車放(fang)置電(dian)池(chi)(chi)的(de)地(di)方會有(you)空(kong)隙，可(ke)以用絕(jue)緣物質填充(chong)，防止電(dian)池(chi)(chi)松動(dong)，震動(dong)頻繁或過多，會發(fa)生(sheng)安全事故。

6、鋰電池容量的選擇(ze)(ze)，一般建(jian)議選擇(ze)(ze)容量與電動車(che)原裝電池一樣的，一般建(jian)議選擇(ze)(ze)兩(liang)倍容量以內，容量過大容易發生安全(quan)事故。

7、鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)種類的選擇，目前電(dian)(dian)(dian)(dian)動車鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)可供考慮(lv)的種類有幾種。18650鋰(li)離子電(dian)(dian)(dian)(dian)池(chi)(chi)、磷酸(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)和聚合(he)(he)物(wu)(wu)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)。一般來(lai)說價格方面如果鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)芯都是新的情況(kuang)下(xia)，聚合(he)(he)物(wu)(wu)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)價格最高，磷酸(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)次(ci)之(zhi)，18650鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)最低，因為聚合(he)(he)物(wu)(wu)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)在密度能(neng)量(liang)(liang)(liang)比上要(yao)大，同等容量(liang)(liang)(liang)規格下(xia)，重量(liang)(liang)(liang)要(yao)輕很多(duo)。在安全(quan)性能(neng)方面，磷酸(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)比較好，18650鋰(li)電(dian)(dian)(dian)(dian)池(chi)(chi)次(ci)之(zhi)。因此要(yao)看自己的經濟允許(xu)做選擇。

8、在(zai)電(dian)池電(dian)壓(ya)方面，要(yao)注意的是(shi)原(yuan)鉛酸(suan)電(dian)池在(zai)更(geng)換鋰(li)(li)電(dian)池時，需要(yao)要(yao)求(qiu)與原(yuan)車(che)電(dian)池電(dian)壓(ya)相(xiang)符，容量(liang)可以加大，續航時間更(geng)長(chang)(chang)。即使是(shi)相(xiang)同容量(liang)，鋰(li)(li)電(dian)池續航里程和壽命也會更(geng)長(chang)(chang)。其(qi)次(ci)，要(yao)注意的是(shi)原(yuan)充(chong)電(dian)器不(bu)可充(chong)鋰(li)(li)電(dian)，需要(yao)單獨購(gou)買或定做(zuo)專用充(chong)電(dian)器。

9、電動(dong)車鉛(qian)酸電池(chi)(chi)換成(cheng)鋰(li)電池(chi)(chi)，電池(chi)(chi)壽命會(hui)(hui)更(geng)長嗎？正(zheng)常使用情(qing)況下，鋰(li)電本身的(de)大電流放(fang)電特性雖然是短板，在擁堵道路的(de)頻繁啟動(dong)，會(hui)(hui)影(ying)響電池(chi)(chi)壽命，但是購買的(de)鋰(li)電池(chi)(chi)如(ru)果(guo)是正(zheng)規廠家生(sheng)產的(de)且(qie)帶(dai)有bms管理系統的(de)，壽命要比鉛(qian)酸電池(chi)(chi)長得多。

從國家綠色可持續發展方向來看，鉛酸電池對環境污染危害比較大，而鋰電池對環境比較(jiao)友好，因此鋰電池(chi)代替鉛(qian)酸電池(chi)可(ke)能性是比較(jiao)大的。