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(jian)議更換。具(ju)體原(yuan)因(yin)如(ru)下：

1、新國標(biao)出(chu)臺后(hou)，對電(dian)動車(che)的各(ge)項標(biao)準(zhun)有(you)了嚴格規定，這(zhe)意味著對電(dian)動車(che)檢測將更加嚴格。如果(guo)自己將鉛酸電(dian)池更換為(wei)鋰電(dian)池，很有(you)可(ke)能面臨無法(fa)上牌(pai)的風險。

2、如(ru)果將(jiang)鉛酸電(dian)池更換為鋰電(dian)池，還必須(xu)將(jiang)電(dian)壓(ya)保持與原鉛酸電(dian)池相同(tong)。此外，充(chong)電(dian)器也(ye)得更換為專用的鋰電(dian)充(chong)電(dian)器。

3、將鉛(qian)酸(suan)電池(chi)更換(huan)為鋰電池(chi)，需(xu)要考慮電池(chi)倉(cang)的(de)大小(xiao)。一般情況(kuang)下鉛(qian)酸(suan)電池(chi)倉(cang)都相對較大，而鋰電池(chi)的(de)體積都相對較小(xiao)。

4、鋰電(dian)池(chi)與鉛酸電(dian)池(chi)相(xiang)比，其穩定性更加差，如果遇水或者操作不當，很容易發生爆炸的風險。

二、電動車鉛酸電池怎么更換鋰電池

電(dian)動(dong)車(che)的(de)鉛酸電(dian)池(chi)更換(huan)成(cheng)鋰電(dian)池(chi)應該注意(yi)如下幾個方面：

1、了解自己(ji)當下(xia)電(dian)(dian)(dian)動(dong)車使(shi)用(yong)的電(dian)(dian)(dian)池(chi)(chi)是什么電(dian)(dian)(dian)池(chi)(chi)，電(dian)(dian)(dian)池(chi)(chi)的放(fang)(fang)電(dian)(dian)(dian)容量、倍率（最大放(fang)(fang)電(dian)(dian)(dian)是多少）。建議(yi)更換(huan)的鋰(li)電(dian)(dian)(dian)池(chi)(chi)在放(fang)(fang)電(dian)(dian)(dian)方面與電(dian)(dian)(dian)動(dong)車原裝電(dian)(dian)(dian)池(chi)(chi)一樣。

2、了解電(dian)動車電(dian)機(ji)最(zui)大允(yun)許(xu)功率(lv)是多少，建(jian)議鋰電(dian)池放電(dian)功率(lv)最(zui)大應該低于電(dian)動車電(dian)機(ji)最(zui)大允(yun)許(xu)功率(lv)，防止電(dian)機(ji)燒壞。

3、了解(jie)電(dian)動車接(jie)線(xian)電(dian)線(xian)規格，查看電(dian)線(xian)允許(xu)通(tong)過的最大(da)電(dian)流(liu)，防(fang)止電(dian)流(liu)過大(da)燒毀電(dian)線(xian)。

4、了解(jie)電(dian)(dian)動(dong)車(che)其他電(dian)(dian)子元器件電(dian)(dian)流(liu)允許限值(zhi)，建議電(dian)(dian)流(liu)應(ying)小于允許的限流(liu)值(zhi)。

5、鋰(li)電(dian)(dian)池(chi)外觀(guan)尺寸大(da)小，一(yi)般來說(shuo)，一(yi)樣容量和放電(dian)(dian)的鋰(li)電(dian)(dian)池(chi)要比鉛酸電(dian)(dian)池(chi)小很(hen)多(duo)，因此電(dian)(dian)動車放置電(dian)(dian)池(chi)的地方(fang)會有空隙，可以用(yong)絕緣物質填充，防止(zhi)電(dian)(dian)池(chi)松動，震動頻繁或(huo)過多(duo)，會發生安全(quan)事(shi)故。

6、鋰(li)電(dian)池(chi)容(rong)量(liang)的選擇(ze)，一般建(jian)(jian)議(yi)選擇(ze)容(rong)量(liang)與電(dian)動(dong)車原裝電(dian)池(chi)一樣的，一般建(jian)(jian)議(yi)選擇(ze)兩倍容(rong)量(liang)以內，容(rong)量(liang)過大(da)容(rong)易發(fa)生安全事故(gu)。

7、鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)種(zhong)類的選擇，目前(qian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)可(ke)供(gong)考慮的種(zhong)類有幾種(zhong)。18650鋰(li)(li)(li)(li)離子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)、磷(lin)(lin)酸鐵(tie)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)和聚(ju)(ju)合物鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)。一般來說(shuo)價(jia)格(ge)方面如果鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)都是新(xin)的情況下(xia)(xia)，聚(ju)(ju)合物鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)價(jia)格(ge)最高，磷(lin)(lin)酸鐵(tie)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)次之(zhi)，18650鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)最低，因(yin)(yin)為聚(ju)(ju)合物鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在密度能(neng)量(liang)(liang)比上(shang)要大，同(tong)等容量(liang)(liang)規格(ge)下(xia)(xia)，重量(liang)(liang)要輕很多。在安全性能(neng)方面，磷(lin)(lin)酸鐵(tie)鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)比較好，18650鋰(li)(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)次之(zhi)。因(yin)(yin)此要看自己的經(jing)濟(ji)允(yun)許做(zuo)選擇。

8、在電池(chi)電壓方(fang)面，要(yao)注意的是(shi)原(yuan)鉛酸(suan)電池(chi)在更換鋰(li)電池(chi)時(shi)，需要(yao)要(yao)求與原(yuan)車電池(chi)電壓相(xiang)符，容(rong)量可以加大，續航時(shi)間更長(chang)(chang)。即使是(shi)相(xiang)同容(rong)量，鋰(li)電池(chi)續航里程和(he)壽命也(ye)會(hui)更長(chang)(chang)。其次，要(yao)注意的是(shi)原(yuan)充電器(qi)不(bu)可充鋰(li)電，需要(yao)單(dan)獨購買或定做專用充電器(qi)。

9、電(dian)(dian)動車鉛(qian)酸電(dian)(dian)池換成鋰電(dian)(dian)池，電(dian)(dian)池壽命(ming)會(hui)(hui)更長嗎？正(zheng)常使用(yong)情況下，鋰電(dian)(dian)本(ben)身的(de)大電(dian)(dian)流放(fang)電(dian)(dian)特性雖然是(shi)(shi)短板，在擁堵道(dao)路的(de)頻繁啟動，會(hui)(hui)影響電(dian)(dian)池壽命(ming)，但(dan)是(shi)(shi)購買(mai)的(de)鋰電(dian)(dian)池如果是(shi)(shi)正(zheng)規廠家生產的(de)且帶有bms管理系統(tong)的(de)，壽命(ming)要比鉛(qian)酸電(dian)(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(jiao)(jiao)友好，因(yin)此鋰電池代替鉛酸電池可(ke)能性是比較(jiao)(jiao)大的(de)。