2)充(chong)(chong)(chong)電時(shi)間(jian)長達(da)6-8個小(xiao)時(shi)，是比較科學的(de)(de)。也(ye)(ye)就是說，實(shi)際(ji)上(shang)電動(dong)汽(qi)車充(chong)(chong)(chong)電的(de)(de)便(bian)捷性是大家不能接受的(de)(de)。一是用家里220V交流(liu)電來充(chong)(chong)(chong)電，充(chong)(chong)(chong)電時(shi)間(jian)要6-8小(xiao)時(shi)；二(er)是到充(chong)(chong)(chong)電站(zhan)用直流(liu)充(chong)(chong)(chong)電，除了排隊(dui)外，充(chong)(chong)(chong)電過程要的(de)(de)時(shi)間(jian)也(ye)(ye)必須要在30分(fen)鐘以上(shang)；三是買(mai)換電池的(de)(de)車吧，基本(ben)上(shang)沒有賣的(de)(de)。

二、提高(gao)充電方便性基本途(tu)徑
1)如(ru)果能(neng)用(yong)民用(yong)交流電(dian)充(chong)電(dian)，如(ru)果充(chong)電(dian)時間少于(yu)要3小時能(neng)接受；
2)如果到充電(dian)站用直流充電(dian)，充電(dian)時(shi)間少(shao)于(yu)1個小時(shi)能(neng)接受(shou)；
3)如果換電(dian)池，必須電(dian)池是(shi)(shi)自己專用，是(shi)(shi)可以接受。
三、鋰離子動力電池組的充電模式(shi)
下面(mian)是(shi)充電(dian)曲線，即充電(dian)模式采用(yong)“限(xian)流(liu)、限(xian)壓(ya)”兩階段充電(dian)模式。
1)限(xian)流過程：
這(zhe)一階段(duan)的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)叫“限流”充(chong)(chong)(chong)(chong)電(dian)(dian)，充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)流保持(chi)在限流值。隨著充(chong)(chong)(chong)(chong)電(dian)(dian)的(de)(de)延續，電(dian)(dian)池電(dian)(dian)動勢不斷(duan)上(shang)(shang)升，電(dian)(dian)池的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)壓(ya)也不斷(duan)上(shang)(shang)升。當(dang)電(dian)(dian)池電(dian)(dian)壓(ya)上(shang)(shang)升到允許的(de)(de)最高充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)壓(ya)時，保持(chi)恒壓(ya)充(chong)(chong)(chong)(chong)電(dian)(dian)。廠家(jia)建議：一般(ban)采用最佳(jia)充(chong)(chong)(chong)(chong)電(dian)(dian)倍率(鋰離子電(dian)(dian)池為0.3CA)進行限流充(chong)(chong)(chong)(chong)電(dian)(dian)。
2)限壓過程：
在這一(yi)(yi)階段(duan)(duan)，由于電(dian)(dian)池電(dian)(dian)動勢(shi)還在不(bu)斷上升，而充電(dian)(dian)電(dian)(dian)壓(ya)又(you)保(bao)持不(bu)變(bian)，所以(yi)電(dian)(dian)池的(de)充電(dian)(dian)流呈雙曲線趨勢(shi)不(bu)斷下降，一(yi)(yi)直下降到零。這一(yi)(yi)階段(duan)(duan)的(de)充電(dian)(dian)叫恒“恒壓(ya)”充電(dian)(dian)，這一(yi)(yi)階段(duan)(duan)的(de)充電(dian)(dian)電(dian)(dian)壓(ya)：U=E+IR=恒壓(ya)值。
(實際做法：當充(chong)電電流(liu)減小(xiao)到0.015CA時(shi)就(jiu)可(ke)停止充(chong)電。)
三、對(dui)離子動(dong)力電池組充電，實際是一(yi)個動(dong)態(tai)的過(guo)程(cheng)
充電(dian)系統必須具(ju)有自動調節(jie)充電(dian)參數、自動控(kong)制和自動保護功能：
1)自(zi)動調節充電(dian)參(can)數
a)例如，在充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)時，尤(you)其在恒壓充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)階段(duan)，如果電(dian)(dian)(dian)(dian)池(chi)組中(zhong)有某一個(ge)單體電(dian)(dian)(dian)(dian)池(chi)的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓超過允(yun)許的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(根據不同鋰電(dian)(dian)(dian)(dian)池(chi)的(de)特性一般設定為3.9V～4.3V之間)時，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)系(xi)統(tong)應(ying)會根據電(dian)(dian)(dian)(dian)池(chi)管理系(xi)統(tong)(BMS)輸出(chu)的(de)信號(hao)，自(zi)動減(jian)小充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)流，使該電(dian)(dian)(dian)(dian)池(chi)的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓不超過允(yun)許的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓，防止該電(dian)(dian)(dian)(dian)池(chi)過壓充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)。
b)再(zai)(zai)如，在充(chong)電(dian)(dian)開(kai)始(shi)時，經電(dian)(dian)池(chi)管理(li)系統(BMS)監測到有(you)某一個單體電(dian)(dian)池(chi)的電(dian)(dian)壓過低，充(chong)電(dian)(dian)系統應能自動改小初始(shi)充(chong)電(dian)(dian)電(dian)(dian)流，待電(dian)(dian)池(chi)的電(dian)(dian)壓正(zheng)(zheng)常后，再(zai)(zai)轉入(ru)正(zheng)(zheng)常充(chong)電(dian)(dian)。
所以，在充電(dian)過程中，充電(dian)系(xi)統必須(xu)能根據電(dian)池(chi)組(zu)的(de)狀態、電(dian)池(chi)管(guan)理系(xi)統(BMS)輸出(chu)的(de)信(xin)息和整車監控(kong)輸出(chu)的(de)信(xin)息，自(zi)動(dong)調節充電(dian)參數和自(zi)動(dong)控(kong)制充電(dian)。
2)自動控(kong)制(zhi)和自動保護功能(neng)
在充(chong)電(dian)(dian)(dian)過程中，電(dian)(dian)(dian)池(chi)組(zu)和電(dian)(dian)(dian)動車發生任何(he)不正常(chang)情況時(shi)(shi)，如電(dian)(dian)(dian)池(chi)組(zu)短路、斷路、高溫、起火和有電(dian)(dian)(dian)池(chi)損壞(huai)時(shi)(shi)，充(chong)電(dian)(dian)(dian)系統應能迅速(su)切斷電(dian)(dian)(dian)源，停止充(chong)電(dian)(dian)(dian)。
3)與整車CAN總線通(tong)信(xin)
在(zai)充(chong)電(dian)過(guo)程(cheng)中，充(chong)電(dian)系統(tong)的信息可(ke)與整車CAN總線通信。

上海(hai)施能(neng)電(dian)器設(she)備有限公司(si)始(shi)建于1984年，上海市高新技術企業，中國工業車輛優秀配套供應商，上海電器行業名優產品，主要生產工頻系列充電機，高頻系列充電機，鋰電池充電機，系列放電機，系列充放電機等電器產品。