重(zhong)慶增程器(qi)一般是指電動(dong)汽(qi)車能夠(gou)提供額(e)外電能，使(shi)電動(dong)汽(qi)車增加行駛里程的(de)部件。傳統(tong)意義(yi)上的(de)增程(cheng)器是指發動(dong)機(ji)和發電(dian)機(ji)的組合。

增程(cheng)(cheng)(cheng)電(dian)(dian)(dian)動(dong)汽車是在電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)量不足的情(qing)況下，利用汽油(you)等(deng)其他能源(yuan)供(gong)應電(dian)(dian)(dian)能的電(dian)(dian)(dian)動(dong)汽車。電(dian)(dian)(dian)動(dong)汽車的主要工作(zuo)(zuo)特性（概念）是大部分時(shi)間(jian)（大概率(lv)）工作(zuo)(zuo)在純電(dian)(dian)(dian)動(dong)模(mo)(mo)式下，少數情(qing)況下（小概率(lv)）工作(zuo)(zuo)在增程(cheng)(cheng)(cheng)模(mo)(mo)式下，即增程(cheng)(cheng)(cheng)器(qi)產生的電(dian)(dian)(dian)能通過電(dian)(dian)(dian)池(chi)供(gong)給(gei)電(dian)(dian)(dian)機，同時(shi)，電(dian)(dian)(dian)池(chi)可以充電(dian)(dian)(dian)。

中國(guo)學術(shu)界和(he)科(ke)技部普遍認為，增程(cheng)電(dian)動(dong)(dong)車(che)屬于純(chun)電(dian)動(dong)(dong)汽(qi)車(che)領域，而非混(hun)合動(dong)(dong)力汽(qi)車(che)。與(yu)(yu)其他混(hun)合動(dong)(dong)力汽(qi)車(che)相比，增程(cheng)電(dian)動(dong)(dong)車(che)配置系統簡單，更(geng)(geng)重要的是性能更(geng)(geng)可靠，成本更(geng)(geng)低；與(yu)(yu)純(chun)電(dian)動(dong)(dong)汽(qi)車(che)相比，增程(cheng)電(dian)動(dong)(dong)車(che)無(wu)需擔(dan)心續航里程(cheng)，成本更(geng)(geng)低。從2019年的技術(shu)環境和市(shi)場需求來(lai)看，增程電動車是最具產(chan)業化前景的產(chan)品之一。