在一條(tiao)距離比較長的(de)線路上有多根小(xiao)面積電(dian)(dian)(dian)纜(lan)(lan)往(wang)(wang)(wang)往(wang)(wang)(wang)會(hui)造成(cheng)電(dian)(dian)(dian)纜(lan)(lan)使用浪費，于是在出(chu)線到用電(dian)(dian)(dian)負(fu)荷(he)中，往(wang)(wang)(wang)往(wang)(wang)(wang)使用主(zhu)干大(da)電(dian)(dian)(dian)纜(lan)(lan)出(chu)線，然(ran)后(hou)在接近負(fu)荷(he)的(de)時(shi)候，使用電(dian)(dian)(dian)纜(lan)(lan)分支箱將主(zhu)干電(dian)(dian)(dian)纜(lan)(lan)分成(cheng)若干小(xiao)面積，電(dian)(dian)(dian)纜(lan)(lan)，由小(xiao)面積電(dian)(dian)(dian)纜(lan)(lan)接入負(fu)荷(he)。這樣(yang)的(de)接線方式廣泛用于城市電(dian)(dian)(dian)網中的(de)路燈等(deng)供電(dian)(dian)(dian)、小(xiao)用戶供電(dian)(dian)(dian)。

政(zheng)府大力(li)度的扶持和推(tui)進(jin)，刺激(ji)了眾多企(qi)業對于充(chong)電(dian)(dian)(dian)樁產(chan)(chan)業的期待。 一位行(xing)業人士表示，除了國(guo)家(jia)電(dian)(dian)(dian)網(wang)(wang)、南(nan)方電(dian)(dian)(dian)網(wang)(wang)、中石(shi)化等(deng)能(neng)源巨頭外，汽車(che)企(qi)業和電(dian)(dian)(dian)氣(qi)生產(chan)(chan)企(qi)業積(ji)極性都很(hen)高。像(xiang)比亞迪、北汽這類電(dian)(dian)(dian)動(dong)車(che)企(qi)業早已開(kai)始建設(she)通用充(chong)電(dian)(dian)(dian)樁，許繼電(dian)(dian)(dian)氣(qi)、西門子這類行(xing)業內企(qi)業也已開(kai)始開(kai)發或投資充(chong)電(dian)(dian)(dian)站的建設(she)。按照(zhao)相(xiang)關測算，未來(lai)5年(nian)內，充(chong)電(dian)(dian)(dian)站的營業規模(mo)每年(nian)有(you)望(wang)超(chao)過千億。從國(guo)家(jia)今(jin)年(nian)的各項動(dong)作來(lai)看(kan)，電(dian)(dian)(dian)動(dong)車(che)的充(chong)電(dian)(dian)(dian)基礎(chu)設(she)施建設(she)將(jiang)在今(jin)年(nian)爆發。

配電箱是按電氣接線要求將開關設備、測量儀表，貴州交流充電樁保護電器和輔助設備組裝在封閉或半封閉金屬柜中或屏幅上，構成低壓配電箱。交流充電樁廠家正常(chang)(chang)運行(xing)(xing)時(shi)可(ke)借助(zhu)手動或(huo)自動開關接(jie)通或(huo)分斷電(dian)路(lu)。故障(zhang)或(huo)不正常(chang)(chang)運行(xing)(xing)時(shi)借助(zhu)保(bao)護電(dian)器切斷電(dian)路(lu)或(huo)報警。借測(ce)量儀表可(ke)顯示(shi)運行(xing)(xing)中的各(ge)種參數，還可(ke)對(dui)某(mou)些電(dian)氣(qi)參數進(jin)行(xing)(xing)調整(zheng)，對(dui)偏離正常(chang)(chang)工(gong)作(zuo)狀態進(jin)行(xing)(xing)提示(shi)或(huo)發(fa)出信號(hao)。

指除安裝面(mian)外(wai)，其(qi)它(ta)所有(you)側面(mian)都被封閉(bi)起來(lai)的(de)(de)一(yi)種低壓開(kai)(kai)關(guan)(guan)(guan)(guan)柜。這種柜子的(de)(de)開(kai)(kai)關(guan)(guan)(guan)(guan)、保(bao)護和監測(ce)控(kong)制等電氣元件，均(jun)安裝在一(yi)個用鋼或(huo)絕(jue)緣材料制成的(de)(de)封閉(bi)外(wai)殼內，可靠墻或(huo)離(li)墻安裝。柜內每條回路之間可以不加隔離(li)措(cuo)施，也(ye)可以采用接地的(de)(de)金屬板或(huo)絕(jue)緣板進行隔離(li)。通常(chang)門與主(zhu)(zhu)開(kai)(kai)關(guan)(guan)(guan)(guan)操作有(you)機械(xie)聯鎖。另(ling)外(wai)還有(you)防護式臺型開(kai)(kai)關(guan)(guan)(guan)(guan)柜（即控(kong)制臺）】面(mian)板上裝有(you)控(kong)制、測(ce)量、信(xin)號等電器。防護式開(kai)(kai)關(guan)(guan)(guan)(guan)柜主(zhu)(zhu)要用作工藝現(xian)場(chang)的(de)(de)配電裝置。

隨著電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子技(ji)術(shu)和變(bian)流(liu)控制技(ji)術(shu)的(de)(de)飛速發(fa)展，高精度可控變(bian)流(liu)技(ji)術(shu)的(de)(de)成熟和普及，分階段恒(heng)(heng)流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)模式(shi)(shi)已(yi)經基本(ben)被(bei)充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)和充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓連續變(bian)化的(de)(de)恒(heng)(heng)壓限流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)模式(shi)(shi)取代(dai)。主(zhu)導充(chong)(chong)電(dian)(dian)(dian)(dian)工藝的(de)(de)還是(shi)恒(heng)(heng)壓限流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)模式(shi)(shi)。接(jie)觸(chu)式(shi)(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)的(de)(de)最大問題在(zai)于它的(de)(de)安全(quan)性和通(tong)用性。為了使(shi)它滿足嚴格(ge)的(de)(de)安全(quan)充(chong)(chong)電(dian)(dian)(dian)(dian)標準，必須在(zai)電(dian)(dian)(dian)(dian)路上采用許(xu)多(duo)措施使(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)設備能夠在(zai)各(ge)種(zhong)環境下安全(quan)充(chong)(chong)電(dian)(dian)(dian)(dian)，恒(heng)(heng)壓限流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)和分階段恒(heng)(heng)流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)均屬于接(jie)觸(chu)式(shi)(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)技(ji)術(shu)。新型的(de)(de)電(dian)(dian)(dian)(dian)動汽車感應(ying)充(chong)(chong)電(dian)(dian)(dian)(dian)技(ji)術(shu)發(fa)展很快。

我國(guo)電(dian)(dian)(dian)(dian)動(dong)汽車(che)(che)充(chong)電(dian)(dian)(dian)(dian)站大多局限于(yu)電(dian)(dian)(dian)(dian)動(dong)公(gong)交(jiao)汽車(che)(che)或內部(bu)集團用(yong)車(che)(che) ， 還沒(mei)有(you)建(jian)成(cheng)真正面(mian)向不同用(yong)戶的(de)充(chong)電(dian)(dian)(dian)(dian)站服務網絡 。 已經建(jian)成(cheng)或在建(jian)的(de)比較有(you)代表性(xing)的(de)充(chong)電(dian)(dian)(dian)(dian)站有(you)如(ru)下(xia)內容 。2006 年 ， 比亞迪在深(shen)圳總(zong)部(bu)建(jian)成(cheng)深(shen)圳首個電(dian)(dian)(dian)(dian)動(dong)汽車(che)(che)充(chong)電(dian)(dian)(dian)(dian)站