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(geng)換。具(ju)體(ti)原(yuan)因(yin)如下：

1、新國標(biao)出臺后，對電動車的各項標(biao)準有了(le)嚴格規定，這意味著對電動車檢測(ce)將更加嚴格。如(ru)果自(zi)己將鉛酸電池(chi)更換為鋰(li)電池(chi)，很有可能(neng)面(mian)臨無(wu)法上牌的風(feng)險。

2、如果將鉛(qian)(qian)酸電池(chi)更換為鋰電池(chi)，還必須將電壓保(bao)持與原(yuan)鉛(qian)(qian)酸電池(chi)相同。此外，充電器也得更換為專用的鋰電充電器。

3、將鉛(qian)酸電池(chi)(chi)(chi)(chi)更換為鋰(li)電池(chi)(chi)(chi)(chi)，需要(yao)考慮電池(chi)(chi)(chi)(chi)倉的大(da)小(xiao)。一般情況(kuang)下鉛(qian)酸電池(chi)(chi)(chi)(chi)倉都相(xiang)對較(jiao)大(da)，而(er)鋰(li)電池(chi)(chi)(chi)(chi)的體積都相(xiang)對較(jiao)小(xiao)。

4、鋰電池(chi)(chi)與鉛酸電池(chi)(chi)相比(bi)，其穩定性更(geng)加差，如果遇水或(huo)者操作(zuo)不當，很容易(yi)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(che)的鉛酸(suan)電池(chi)更(geng)換成鋰電池(chi)應該(gai)注意如下幾個方面：

1、了解自己當下(xia)電動車(che)使用的(de)電池是什么電池，電池的(de)放電容(rong)量、倍率（最(zui)大放電是多(duo)少）。建議更換的(de)鋰電池在(zai)放電方面與電動車(che)原裝電池一樣。

2、了解(jie)電動(dong)車(che)電機最(zui)大允許功率(lv)是多少，建議鋰電池放電功率(lv)最(zui)大應該低(di)于(yu)電動(dong)車(che)電機最(zui)大允許功率(lv)，防止電機燒壞。

3、了解電(dian)(dian)動車接線(xian)(xian)電(dian)(dian)線(xian)(xian)規格，查看電(dian)(dian)線(xian)(xian)允許通過(guo)的(de)最大(da)(da)電(dian)(dian)流，防止電(dian)(dian)流過(guo)大(da)(da)燒毀電(dian)(dian)線(xian)(xian)。

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

5、鋰電(dian)(dian)池(chi)外觀尺(chi)寸大小(xiao)，一(yi)般(ban)來說，一(yi)樣容(rong)量和(he)放電(dian)(dian)的鋰電(dian)(dian)池(chi)要(yao)比鉛酸電(dian)(dian)池(chi)小(xiao)很多，因此(ci)電(dian)(dian)動(dong)車放置電(dian)(dian)池(chi)的地(di)方會有(you)空隙(xi)，可(ke)以(yi)用(yong)絕緣物質填充，防止電(dian)(dian)池(chi)松動(dong)，震動(dong)頻繁或(huo)過多，會發生(sheng)安全事(shi)故。

6、鋰電池(chi)容(rong)量(liang)的選擇(ze)，一(yi)般建議選擇(ze)容(rong)量(liang)與電動車原裝電池(chi)一(yi)樣的，一(yi)般建議選擇(ze)兩(liang)倍(bei)容(rong)量(liang)以內(nei)，容(rong)量(liang)過大容(rong)易發生安(an)全(quan)事(shi)故(gu)。

7、鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)種(zhong)類的(de)(de)選擇，目前(qian)電(dian)(dian)動車鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)可供(gong)考慮的(de)(de)種(zhong)類有幾種(zhong)。18650鋰(li)(li)(li)(li)離子電(dian)(dian)池(chi)(chi)(chi)(chi)、磷(lin)酸(suan)鐵鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)和聚合物(wu)鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)。一般來(lai)說(shuo)價格(ge)方面(mian)如果鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)電(dian)(dian)芯都是新的(de)(de)情況下(xia)，聚合物(wu)鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)價格(ge)最高，磷(lin)酸(suan)鐵鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)次(ci)之，18650鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)最低，因(yin)為(wei)聚合物(wu)鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)在密度能(neng)量比(bi)上要(yao)(yao)(yao)大(da)，同等容量規格(ge)下(xia)，重量要(yao)(yao)(yao)輕很多。在安全性能(neng)方面(mian)，磷(lin)酸(suan)鐵鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)比(bi)較好(hao)，18650鋰(li)(li)(li)(li)電(dian)(dian)池(chi)(chi)(chi)(chi)次(ci)之。因(yin)此要(yao)(yao)(yao)看自己的(de)(de)經(jing)濟允(yun)許(xu)做選擇。

8、在電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)方面，要(yao)(yao)注意的(de)是原鉛酸電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在更換鋰(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)時，需(xu)要(yao)(yao)要(yao)(yao)求(qiu)與原車電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)相符，容(rong)量可(ke)以加(jia)大，續(xu)航時間更長(chang)。即使(shi)是相同容(rong)量，鋰(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)續(xu)航里程(cheng)和(he)壽(shou)命也(ye)會(hui)更長(chang)。其次，要(yao)(yao)注意的(de)是原充電(dian)(dian)(dian)(dian)(dian)(dian)器不可(ke)充鋰(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)，需(xu)要(yao)(yao)單獨購買(mai)或定做專用(yong)充電(dian)(dian)(dian)(dian)(dian)(dian)器。

9、電(dian)(dian)(dian)(dian)動(dong)車(che)鉛(qian)(qian)酸(suan)電(dian)(dian)(dian)(dian)池(chi)(chi)換成(cheng)鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)，電(dian)(dian)(dian)(dian)池(chi)(chi)壽命(ming)(ming)會更長(chang)嗎？正常(chang)使用(yong)情況下，鋰(li)(li)電(dian)(dian)(dian)(dian)本(ben)身的(de)大電(dian)(dian)(dian)(dian)流放電(dian)(dian)(dian)(dian)特性雖然(ran)是短(duan)板(ban)，在擁堵道(dao)路(lu)的(de)頻繁啟動(dong)，會影響電(dian)(dian)(dian)(dian)池(chi)(chi)壽命(ming)(ming)，但是購(gou)買的(de)鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(chi)如果是正規(gui)廠家生(sheng)產的(de)且帶有bms管理系統(tong)的(de)，壽命(ming)(ming)要(yao)比鉛(qian)(qian)酸(suan)電(dian)(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友好，因(yin)此鋰電(dian)池(chi)代替鉛酸電(dian)池(chi)可能(neng)性是比較大的。