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。具體原因(yin)如下：

1、新國標(biao)出(chu)臺后，對(dui)電(dian)(dian)動(dong)車的(de)各(ge)項標(biao)準(zhun)有了嚴(yan)格(ge)規定，這意(yi)味著(zhu)對(dui)電(dian)(dian)動(dong)車檢測將更加嚴(yan)格(ge)。如果自(zi)己將鉛酸電(dian)(dian)池(chi)更換為(wei)鋰電(dian)(dian)池(chi)，很有可能面臨無法上牌的(de)風險。

2、如果(guo)將鉛酸電(dian)池更換為鋰(li)電(dian)池，還(huan)必須將電(dian)壓保(bao)持與原(yuan)鉛酸電(dian)池相同。此外，充電(dian)器也得(de)更換為專用的鋰(li)電(dian)充電(dian)器。

3、將鉛酸(suan)電池(chi)更(geng)換為鋰電池(chi)，需要考慮電池(chi)倉(cang)的大小。一般情(qing)況下鉛酸(suan)電池(chi)倉(cang)都(dou)相對(dui)較大，而鋰電池(chi)的體積(ji)都(dou)相對(dui)較小。

4、鋰電池與(yu)鉛酸電池相比(bi)，其穩定(ding)性(xing)更(geng)加差，如(ru)果遇水(shui)或者操作不當，很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

電動車的鉛酸電池(chi)更換成(cheng)鋰電池(chi)應該注(zhu)意(yi)如下幾個方面：

1、了解(jie)自己當(dang)下電(dian)(dian)動車(che)使用(yong)的(de)電(dian)(dian)池是(shi)什(shen)么電(dian)(dian)池，電(dian)(dian)池的(de)放(fang)(fang)電(dian)(dian)容量、倍(bei)率（最大(da)放(fang)(fang)電(dian)(dian)是(shi)多少）。建議更換的(de)鋰(li)電(dian)(dian)池在放(fang)(fang)電(dian)(dian)方(fang)面與電(dian)(dian)動車(che)原裝電(dian)(dian)池一樣。

2、了解電(dian)動車(che)(che)電(dian)機(ji)最大(da)允許功(gong)率(lv)是多少，建議(yi)鋰電(dian)池(chi)放電(dian)功(gong)率(lv)最大(da)應該低(di)于電(dian)動車(che)(che)電(dian)機(ji)最大(da)允許功(gong)率(lv)，防止電(dian)機(ji)燒壞。

3、了解電(dian)動車(che)接(jie)線(xian)電(dian)線(xian)規格，查看電(dian)線(xian)允許通過(guo)的最大電(dian)流，防止電(dian)流過(guo)大燒毀電(dian)線(xian)。

4、了解(jie)電(dian)(dian)動(dong)車其他電(dian)(dian)子(zi)元器件電(dian)(dian)流允許限值(zhi)，建議電(dian)(dian)流應小于允許的(de)限流值(zhi)。

5、鋰(li)電(dian)池(chi)(chi)外觀尺寸大小，一般來說，一樣容量(liang)和放(fang)(fang)電(dian)的鋰(li)電(dian)池(chi)(chi)要比鉛酸電(dian)池(chi)(chi)小很多，因此電(dian)動(dong)車放(fang)(fang)置電(dian)池(chi)(chi)的地(di)方會(hui)有空隙(xi)，可以用絕緣(yuan)物質填充，防(fang)止(zhi)電(dian)池(chi)(chi)松動(dong)，震動(dong)頻繁或(huo)過多，會(hui)發生安(an)全事故。

6、鋰電池容(rong)(rong)量的(de)選(xuan)擇(ze)，一(yi)般建議選(xuan)擇(ze)容(rong)(rong)量與電動車原裝電池一(yi)樣的(de)，一(yi)般建議選(xuan)擇(ze)兩倍容(rong)(rong)量以內，容(rong)(rong)量過大容(rong)(rong)易發生安(an)全事故(gu)。

7、鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)種類的選(xuan)擇(ze)，目(mu)前電(dian)(dian)(dian)動車鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)可供考慮的種類有幾種。18650鋰(li)離子(zi)電(dian)(dian)(dian)池(chi)(chi)(chi)、磷(lin)酸(suan)(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)和聚合(he)物鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)。一般來(lai)說價格(ge)方面如(ru)果鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)芯(xin)都(dou)是新的情況下(xia)，聚合(he)物鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)價格(ge)最(zui)高，磷(lin)酸(suan)(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)次(ci)(ci)之，18650鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)最(zui)低(di)，因為聚合(he)物鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)在(zai)密度能(neng)量(liang)比上要(yao)(yao)大，同等容(rong)量(liang)規(gui)格(ge)下(xia)，重(zhong)量(liang)要(yao)(yao)輕很多(duo)。在(zai)安(an)全性能(neng)方面，磷(lin)酸(suan)(suan)鐵(tie)鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)比較好，18650鋰(li)電(dian)(dian)(dian)池(chi)(chi)(chi)次(ci)(ci)之。因此要(yao)(yao)看(kan)自己的經濟(ji)允許做(zuo)選(xuan)擇(ze)。

8、在電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓(ya)方(fang)面，要注意的(de)是原鉛酸電(dian)(dian)(dian)池(chi)在更換鋰電(dian)(dian)(dian)池(chi)時，需要要求(qiu)與原車電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓(ya)相符，容(rong)(rong)量可(ke)以加(jia)大，續航時間更長。即使是相同容(rong)(rong)量，鋰電(dian)(dian)(dian)池(chi)續航里程和壽命也會(hui)更長。其次(ci)，要注意的(de)是原充電(dian)(dian)(dian)器不可(ke)充鋰電(dian)(dian)(dian)，需要單獨購買或定做專用充電(dian)(dian)(dian)器。

9、電(dian)(dian)(dian)動(dong)車(che)鉛酸電(dian)(dian)(dian)池(chi)(chi)換(huan)成鋰(li)電(dian)(dian)(dian)池(chi)(chi)，電(dian)(dian)(dian)池(chi)(chi)壽(shou)命會更長(chang)嗎？正常使用(yong)情(qing)況(kuang)下，鋰(li)電(dian)(dian)(dian)本(ben)身的大電(dian)(dian)(dian)流放電(dian)(dian)(dian)特(te)性雖然是(shi)短(duan)板(ban)，在擁堵道路的頻繁啟動(dong)，會影響電(dian)(dian)(dian)池(chi)(chi)壽(shou)命，但是(shi)購買的鋰(li)電(dian)(dian)(dian)池(chi)(chi)如果是(shi)正規(gui)廠(chang)家(jia)生產的且帶有(you)bms管理(li)系(xi)統的，壽(shou)命要比鉛酸電(dian)(dian)(dian)池(chi)(chi)長(chang)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(ci)鋰電池(chi)代替鉛酸電池(chi)可能性是比較(jiao)大的。