集(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)從字面上理解(jie)，這就(jiu)是(shi)收(shou)集(ji)(ji)(ji)器(qi)(qi)。在電(dian)(dian)(dian)(dian)(dian)子(zi)器(qi)(qi)件內(nei)，有時把用來(lai)(lai)收(shou)集(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)子(zi)的(de)電(dian)(dian)(dian)(dian)(dian)極，例如受電(dian)(dian)(dian)(dian)(dian)子(zi)束所投射(she)的(de)電(dian)(dian)(dian)(dian)(dian)極叫(jiao)做(zuo)集(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)（即集(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)極）。在發電(dian)(dian)(dian)(dian)(dian)機(ji)內(nei)，則是(shi)將用來(lai)(lai)把電(dian)(dian)(dian)(dian)(dian)機(ji)內(nei)所產生(sheng)的(de)交變電(dian)(dian)(dian)(dian)(dian)流轉換(huan)為脈動電(dian)(dian)(dian)(dian)(dian)流，即變成方向恒定(ding)而(er)大小在變化著的(de)電(dian)(dian)(dian)(dian)(dian)流的(de)裝置叫(jiao)做(zuo)集(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。

　　集(ji)電器是(shi)滑線系統中主要的(de)部件(jian)之一。

　　集(ji)(ji)電(dian)器(qi)是滑(hua)觸線系統中(zhong)集(ji)(ji)電(dian)側拾取電(dian)能的主要裝置，它通過集(ji)(ji)電(dian)刷與導(dao)軌的滑(hua)動接觸，將電(dian)能直接傳導(dao)至用電(dian)器(qi)，從(cong)而(er)實現系統的移動供電(dian)。集(ji)(ji)電(dian)器(qi)由(you)機(ji)械(xie)結構的張力裝置和直接與導(dao)軌滑(hua)動接觸的集(ji)(ji)電(dian)刷兩部分(fen)組(zu)成。

　　機(ji)(ji)械(xie)結構(gou)的(de)張力裝置決定集電(dian)刷(shua)與(yu)導軌的(de)滑動接觸壓力和機(ji)(ji)構(gou)的(de)穩(wen)定性，集電(dian)刷(shua)則是導軌滑動接觸拾取電(dian)能的(de)導體，它的(de)性能和導電(dian)質量(liang)以(yi)及材料結構(gou)成分的(de)優(you)劣，將(jiang)直接影響整個(ge)系統(tong)設(she)備(bei)的(de)安全(quan)運行質量(liang)。