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(dan)是不建議(yi)更換。具(ju)體(ti)原因如下：

1、新國標出臺后，對電動車的各項標準有(you)了嚴格規定，這意味著對電動車檢測(ce)將(jiang)更(geng)加嚴格。如果自己將(jiang)鉛酸電池更(geng)換為(wei)鋰電池，很(hen)有(you)可能面(mian)臨無法上(shang)牌的風(feng)險(xian)。

2、如果將鉛酸電(dian)(dian)(dian)池(chi)更換(huan)(huan)為鋰電(dian)(dian)(dian)池(chi)，還必須將電(dian)(dian)(dian)壓保持與(yu)原鉛酸電(dian)(dian)(dian)池(chi)相同。此外，充(chong)(chong)電(dian)(dian)(dian)器也得(de)更換(huan)(huan)為專用的鋰電(dian)(dian)(dian)充(chong)(chong)電(dian)(dian)(dian)器。

3、將鉛酸(suan)電(dian)池(chi)更換為(wei)鋰電(dian)池(chi)，需要(yao)考慮電(dian)池(chi)倉(cang)的大小(xiao)。一般情況下鉛酸(suan)電(dian)池(chi)倉(cang)都相對(dui)較大，而(er)鋰電(dian)池(chi)的體積都相對(dui)較小(xiao)。

4、鋰電池與鉛酸(suan)電池相比(bi)，其穩定性更加差，如果遇水或(huo)者(zhe)操作不(bu)當，很(hen)容易發生爆(bao)炸的風險。

二、電動車鉛酸電池怎么更換鋰電池

電動(dong)車的(de)鉛酸(suan)電池更換成鋰電池應該注意如下幾個方面：

1、了(le)解自己(ji)當下電(dian)(dian)(dian)(dian)(dian)動車使用(yong)的電(dian)(dian)(dian)(dian)(dian)池是什(shen)么(me)電(dian)(dian)(dian)(dian)(dian)池，電(dian)(dian)(dian)(dian)(dian)池的放(fang)電(dian)(dian)(dian)(dian)(dian)容量、倍率(lv)（最大(da)放(fang)電(dian)(dian)(dian)(dian)(dian)是多(duo)少(shao)）。建(jian)議更換的鋰電(dian)(dian)(dian)(dian)(dian)池在(zai)放(fang)電(dian)(dian)(dian)(dian)(dian)方面與(yu)電(dian)(dian)(dian)(dian)(dian)動車原裝電(dian)(dian)(dian)(dian)(dian)池一樣。

2、了解電(dian)(dian)(dian)(dian)動車電(dian)(dian)(dian)(dian)機(ji)最(zui)大允許(xu)功(gong)率(lv)(lv)是多少，建議鋰(li)電(dian)(dian)(dian)(dian)池放電(dian)(dian)(dian)(dian)功(gong)率(lv)(lv)最(zui)大應該低(di)于電(dian)(dian)(dian)(dian)動車電(dian)(dian)(dian)(dian)機(ji)最(zui)大允許(xu)功(gong)率(lv)(lv)，防止電(dian)(dian)(dian)(dian)機(ji)燒壞(huai)。

3、了解電(dian)動車接線電(dian)線規(gui)格，查看電(dian)線允許通過的最大電(dian)流，防止電(dian)流過大燒毀電(dian)線。

4、了解電(dian)動車其他電(dian)子元器(qi)件(jian)電(dian)流允許限值，建議電(dian)流應(ying)小(xiao)于允許的限流值。

5、鋰電(dian)池(chi)外觀尺寸大小(xiao)，一般(ban)來(lai)說，一樣容(rong)量和放電(dian)的鋰電(dian)池(chi)要比鉛(qian)酸電(dian)池(chi)小(xiao)很多，因此電(dian)動車放置(zhi)電(dian)池(chi)的地方會有空隙，可以(yi)用絕緣物(wu)質填充(chong)，防止電(dian)池(chi)松動，震動頻繁或過多，會發生(sheng)安(an)全(quan)事故(gu)。

6、鋰電池容量(liang)(liang)的(de)(de)選(xuan)擇，一般建議選(xuan)擇容量(liang)(liang)與電動車原(yuan)裝電池一樣(yang)的(de)(de)，一般建議選(xuan)擇兩倍容量(liang)(liang)以內，容量(liang)(liang)過大容易(yi)發(fa)生安(an)全事故。

7、鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)種類(lei)的(de)(de)選擇，目前(qian)電(dian)(dian)動車鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)可(ke)供考慮的(de)(de)種類(lei)有幾(ji)種。18650鋰(li)離子電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)、磷(lin)(lin)(lin)酸鐵(tie)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)和聚(ju)合(he)物(wu)(wu)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)。一般來說價格方(fang)(fang)面如果鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)電(dian)(dian)芯都是新的(de)(de)情(qing)況(kuang)下，聚(ju)合(he)物(wu)(wu)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)價格最高，磷(lin)(lin)(lin)酸鐵(tie)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)次之，18650鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)最低，因為聚(ju)合(he)物(wu)(wu)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)在密度能量比(bi)上要(yao)大，同等(deng)容量規格下，重量要(yao)輕很多。在安全性(xing)能方(fang)(fang)面，磷(lin)(lin)(lin)酸鐵(tie)鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)比(bi)較好，18650鋰(li)電(dian)(dian)池(chi)(chi)(chi)(chi)(chi)次之。因此(ci)要(yao)看自(zi)己(ji)的(de)(de)經濟(ji)允許做選擇。

8、在(zai)電(dian)(dian)池(chi)電(dian)(dian)壓方面，要(yao)注(zhu)(zhu)意的是原(yuan)鉛酸電(dian)(dian)池(chi)在(zai)更(geng)換鋰電(dian)(dian)池(chi)時，需要(yao)要(yao)求與原(yuan)車電(dian)(dian)池(chi)電(dian)(dian)壓相(xiang)符，容(rong)量(liang)可以加大，續航時間(jian)更(geng)長。即使是相(xiang)同(tong)容(rong)量(liang)，鋰電(dian)(dian)池(chi)續航里程和壽命也會更(geng)長。其次，要(yao)注(zhu)(zhu)意的是原(yuan)充電(dian)(dian)器不可充鋰電(dian)(dian)，需要(yao)單獨購買(mai)或定做專用充電(dian)(dian)器。

9、電動車鉛(qian)酸(suan)電池(chi)(chi)換成(cheng)鋰電池(chi)(chi)，電池(chi)(chi)壽命會更長嗎？正常(chang)使用情況下，鋰電本身的(de)大電流放電特性(xing)雖然(ran)是短板，在擁堵道(dao)路的(de)頻繁啟(qi)動，會影響電池(chi)(chi)壽命，但是購買的(de)鋰電池(chi)(chi)如果是正規廠家生產的(de)且(qie)帶有bms管(guan)理(li)系統的(de)，壽命要比鉛(qian)酸(suan)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(jing)比較友好，因此(ci)鋰電(dian)池代替(ti)鉛酸電(dian)池可能性是比較大的。