電動汽車離不開電池支撐，而作為電池的能量補給來說，充電樁是個很重要的裝置，充電樁的正常運用也關系到車輛的充電順利，為了確保車輛的充電順利，充電樁是有主動斷電功用的，說起這個需要充電樁自身的構造和作業說起，以現在的直流充電樁為例，充電樁在規劃的進程有充電保護，過壓過流保護等功用規劃。

　　以其(qi)過流(liu)保護(hu)來說，當電(dian)(dian)流(liu)到達設(she)定的電(dian)(dian)流(liu)的時分就會出現主動斷電(dian)(dian)的狀況，依據其(qi)內部(bu)的結構來說，直流(liu)充電(dian)(dian)樁作業時，輔助電(dian)(dian)源(yuan)給主控(kong)單元(yuan)、顯現模(mo)塊、保護(hu)控(kong)制(zhi)單元(yuan)、信(xin)號采集單元(yuan)及刷卡模(mo)塊等控(kong)制(zhi)體(ti)系進行供電(dian)(dian)。

　　當(dang)車(che)輛(liang)的(de)主電(dian)(dian)路輸入(ru)斷(duan)路器(qi)(qi)具有過(guo)載、短路和漏電(dian)(dian)保護功用(yong)；輸出接觸器(qi)(qi)控(kong)(kong)制電(dian)(dian)源(yuan)的(de)通斷(duan)；而充(chong)電(dian)(dian)樁的(de)中間，充(chong)電(dian)(dian)控(kong)(kong)制器(qi)(qi)是(shi)用(yong)來(lai)控(kong)(kong)制充(chong)電(dian)(dian)電(dian)(dian)壓，充(chong)電(dian)(dian)時(shi)間，這點類(lei)似于(yu)大腦神經相(xiang)同，經過(guo)電(dian)(dian)源(yuan)線來(lai)檢測輸送到車(che)輛(liang)電(dian)(dian)池的(de)電(dian)(dian)壓，以(yi)電(dian)(dian)壓的(de)多(duo)少來(lai)判(pan)別是(shi)否繼續給(gei)電(dian)(dian)池充(chong)電(dian)(dian)，然后關于(yu)這個控(kong)(kong)制器(qi)(qi)來(lai)說(shuo)就可(ke)以(yi)完成充(chong)溢自停功用(yong)。

　　簡(jian)略的來說(shuo)充(chong)(chong)電(dian)(dian)(dian)(dian)樁的作(zuo)業需要(yao)電(dian)(dian)(dian)(dian)動汽車、電(dian)(dian)(dian)(dian)池(chi)體系、充(chong)(chong)電(dian)(dian)(dian)(dian)樁體系，它們三個之(zhi)(zhi)間(jian)的彼此進行配合(he)著(zhu)作(zuo)業，當其三者初(chu)步連著(zhu)作(zuo)業的時分，充(chong)(chong)電(dian)(dian)(dian)(dian)樁之(zhi)(zhi)中間(jian)（充(chong)(chong)電(dian)(dian)(dian)(dian)樁控制器）下發(fa)指(zhi)令給(gei)充(chong)(chong)電(dian)(dian)(dian)(dian)樁的充(chong)(chong)電(dian)(dian)(dian)(dian)模(mo)(mo)塊，而這個時分的充(chong)(chong)電(dian)(dian)(dian)(dian)模(mo)(mo)塊按指(zhi)令要(yao)求的輸出(chu)電(dian)(dian)(dian)(dian)壓和輸出(chu)電(dian)(dian)(dian)(dian)流初(chu)步作(zuo)業，繼續給(gei)電(dian)(dian)(dian)(dian)動汽車動力電(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)。