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(yi)更換(huan)。具體(ti)原因(yin)如下：

1、新(xin)國標出臺后，對電(dian)動車的各項標準有(you)了嚴(yan)格規定，這意味著對電(dian)動車檢(jian)測將(jiang)更加嚴(yan)格。如果自己(ji)將(jiang)鉛(qian)酸電(dian)池更換為鋰電(dian)池，很(hen)有(you)可能面臨(lin)無法上牌的風險。

2、如(ru)果將鉛(qian)酸(suan)電池更(geng)換為鋰電池，還必須將電壓保持與原鉛(qian)酸(suan)電池相(xiang)同。此外，充(chong)電器也得更(geng)換為專用的鋰電充(chong)電器。

3、將鉛酸電(dian)池更換(huan)為鋰電(dian)池，需要考慮(lv)電(dian)池倉的大小(xiao)。一般情況(kuang)下鉛酸電(dian)池倉都相對較大，而鋰電(dian)池的體積都相對較小(xiao)。

4、鋰電池(chi)與鉛酸電池(chi)相比，其穩定性更加差，如果遇水(shui)或者操作不當，很容易發(fa)生爆炸的風險。

二、電動車鉛酸電池怎么更換鋰電池

電(dian)動車的鉛酸電(dian)池更(geng)換成(cheng)鋰電(dian)池應該注意如下幾(ji)個(ge)方面：

1、了解自(zi)己當下電(dian)(dian)動車使用(yong)的電(dian)(dian)池是(shi)什(shen)么電(dian)(dian)池，電(dian)(dian)池的放(fang)電(dian)(dian)容量、倍率(lv)（最大放(fang)電(dian)(dian)是(shi)多少）。建議更(geng)換的鋰(li)電(dian)(dian)池在放(fang)電(dian)(dian)方面與電(dian)(dian)動車原裝電(dian)(dian)池一樣。

2、了解電(dian)(dian)動(dong)車電(dian)(dian)機最大允(yun)許功(gong)率是(shi)多少，建議鋰(li)電(dian)(dian)池放(fang)電(dian)(dian)功(gong)率最大應該低于(yu)電(dian)(dian)動(dong)車電(dian)(dian)機最大允(yun)許功(gong)率，防止電(dian)(dian)機燒壞(huai)。

3、了解(jie)電(dian)(dian)動車接線(xian)電(dian)(dian)線(xian)規(gui)格(ge)，查看電(dian)(dian)線(xian)允許(xu)通過的最大(da)電(dian)(dian)流，防止電(dian)(dian)流過大(da)燒毀電(dian)(dian)線(xian)。

4、了解(jie)電(dian)動車其他電(dian)子元(yuan)器件電(dian)流(liu)允(yun)(yun)許限值，建議電(dian)流(liu)應小于允(yun)(yun)許的限流(liu)值。

5、鋰電(dian)(dian)池(chi)(chi)(chi)外觀(guan)尺寸大小(xiao)，一(yi)般來說，一(yi)樣容(rong)量和放電(dian)(dian)的(de)(de)鋰電(dian)(dian)池(chi)(chi)(chi)要比鉛酸電(dian)(dian)池(chi)(chi)(chi)小(xiao)很(hen)多(duo)，因此(ci)電(dian)(dian)動(dong)(dong)車(che)放置電(dian)(dian)池(chi)(chi)(chi)的(de)(de)地(di)方(fang)會有空隙，可以用絕(jue)緣(yuan)物質填充(chong)，防止(zhi)電(dian)(dian)池(chi)(chi)(chi)松動(dong)(dong)，震動(dong)(dong)頻繁(fan)或過(guo)多(duo)，會發生安全事故。

6、鋰電(dian)池容(rong)量(liang)的選擇，一(yi)般(ban)建議選擇容(rong)量(liang)與電(dian)動車原裝電(dian)池一(yi)樣的，一(yi)般(ban)建議選擇兩倍容(rong)量(liang)以內，容(rong)量(liang)過大容(rong)易發(fa)生安全事故。

7、鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)種(zhong)類的(de)選(xuan)擇(ze)，目前電(dian)(dian)(dian)(dian)動車鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)可(ke)供考(kao)慮的(de)種(zhong)類有幾種(zhong)。18650鋰(li)(li)(li)離子電(dian)(dian)(dian)(dian)池(chi)(chi)、磷(lin)酸(suan)(suan)鐵(tie)(tie)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)和聚合(he)物鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)。一般來(lai)說價格(ge)方面如果鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)芯都是(shi)新的(de)情況下(xia)，聚合(he)物鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)價格(ge)最高，磷(lin)酸(suan)(suan)鐵(tie)(tie)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)次之，18650鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)最低，因(yin)為聚合(he)物鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)在密度能量(liang)比上要大(da)，同等容量(liang)規格(ge)下(xia)，重(zhong)量(liang)要輕(qing)很(hen)多(duo)。在安全性能方面，磷(lin)酸(suan)(suan)鐵(tie)(tie)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)比較(jiao)好，18650鋰(li)(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)次之。因(yin)此要看自(zi)己的(de)經濟允許做選(xuan)擇(ze)。

8、在(zai)電(dian)池電(dian)壓方面，要注意(yi)的是原鉛(qian)酸電(dian)池在(zai)更(geng)(geng)換(huan)鋰(li)電(dian)池時，需要要求與(yu)原車電(dian)池電(dian)壓相符，容量可以加大，續(xu)航時間更(geng)(geng)長。即(ji)使是相同容量，鋰(li)電(dian)池續(xu)航里(li)程和(he)壽命也(ye)會更(geng)(geng)長。其次，要注意(yi)的是原充(chong)(chong)電(dian)器不可充(chong)(chong)鋰(li)電(dian)，需要單獨購買或定(ding)做專用充(chong)(chong)電(dian)器。

9、電(dian)動車鉛(qian)酸電(dian)池換成鋰(li)電(dian)池，電(dian)池壽命(ming)(ming)會更長嗎？正(zheng)常(chang)使用(yong)情況下，鋰(li)電(dian)本身的(de)(de)(de)大(da)電(dian)流(liu)放電(dian)特性雖然是(shi)短板，在擁(yong)堵道路的(de)(de)(de)頻繁(fan)啟動，會影響(xiang)電(dian)池壽命(ming)(ming)，但是(shi)購(gou)買的(de)(de)(de)鋰(li)電(dian)池如(ru)果是(shi)正(zheng)規廠家生(sheng)產的(de)(de)(de)且帶(dai)有bms管理系統的(de)(de)(de)，壽命(ming)(ming)要比鉛(qian)酸電(dian)池長得多。

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友好，因(yin)此鋰電池代替鉛酸(suan)電池可能性是(shi)比較大(da)的(de)。