新能源(yuan)用(yong)電(dian)容(rong)(rong)器(qi)(qi)是一種用(yong)于直流濾(lv)波器(qi)(qi)的(de)(de)電(dian)容(rong)(rong)器(qi)(qi)。與傳統(tong)的(de)(de)電(dian)容(rong)(rong)器(qi)(qi)相比(bi), 它(ta)具有壽命(ming)長、溫度穩定性好的(de)(de)優點(dian), 更(geng)適合(he)于新能源(yuan)汽車的(de)(de)逆變器(qi)(qi)直流濾(lv)波。本文主要介紹了新能源(yuan)用(yong)電(dian)容(rong)(rong)器(qi)(qi)的(de)(de)優點(dian)、采用(yong)的(de)(de)先進技術、相關(guan)的(de)(de)選型標(biao)準和應用(yong)分析。

早期(qi)的(de)直(zhi)(zhi)流(liu)支(zhi)撐膜(mo)電(dian)(dian)容(rong)器是采用電(dian)(dian)解電(dian)(dian)容(rong), 隨著薄膜(mo)電(dian)(dian)容(rong)技(ji)(ji)術(shu)(shu)的(de)發展(zhan), 特(te)別是基膜(mo)技(ji)(ji)術(shu)(shu)的(de)發展(zhan)和金屬化(hua)技(ji)(ji)術(shu)(shu)的(de)進步, 不僅使其體積薄膜(mo)電(dian)(dian)容(rong)較小, 但也使產品(pin)的(de)壓(ya)力水(shui)平(ping)保持在(zai)(zai)相當的(de)水(shui)平(ping)。現在(zai)(zai)越來越多的(de)公(gong)司(si)用高(gao)溫(wen)聚丙烯薄膜(mo)電(dian)(dian)容(rong)器作(zuo)為直(zhi)(zhi)流(liu)支(zhi)持電(dian)(dian)容(rong)器, 典型的(de)例子(zi)是豐田(tian)普(pu)銳斯車型的(de)改進, 而國內汽車公(gong)司(si)通常代(dai)表比(bi)亞迪 $literal 和 E6, 用新能源用電(dian)(dian)容(rong)器作(zuo)為 dc支(zhi)持電(dian)(dian)容(rong)器。

由(you)于新能源(yuan)用(yong)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器有(you)自愈量(liang)現(xian)象, 而薄膜電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)設計(ji)是(shi)(shi)根據 IEC61071 標準, 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)浪涌電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)容(rong)(rong)(rong)(rong)量(liang)超過1.5 的(de)(de)額(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya), 加上電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)分離膜的(de)(de)使(shi)用(yong)技(ji)術, 見圖 4, 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)理論不會產(chan)生短路故障的(de)(de)現(xian)象, 這大(da)大(da)提高了(le)這種電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器的(de)(de)安全性, 典型的(de)(de)失(shi)效模式(shi)是(shi)(shi)開放的(de)(de)。特別是(shi)(shi)在應用(yong)中, 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器對峰(feng)值(zhi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)容(rong)(rong)(rong)(rong)量(liang)也是(shi)(shi)研究(jiu)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)一(yi)個重要指標。實際(ji)上, 最大(da)允許(xu)浪涌電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)1.2 倍(bei), 迫使(shi)用(yong)戶(hu)考慮(lv)峰(feng)值(zhi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya), 而不是(shi)(shi)標稱電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。

新(xin)能(neng)源用(yong)(yong)電(dian)(dian)容器(qi)是一種采用(yong)(yong)新(xin)的(de)(de)制造工(gong)藝(yi)和(he)金屬化膜技術的(de)(de)電(dian)(dian)容器(qi), 它(ta)增加了傳統(tong)薄膜電(dian)(dian)容器(qi)的(de)(de)能(neng)量密度, 即電(dian)(dian)容體(ti)積也會收(shou)縮。它(ta)的(de)(de)另一個方面是通過集成電(dian)(dian)容器(qi)核心(xin)和(he)母排來滿足客(ke)戶(hu)靈活的(de)(de)尺(chi)寸要求, 不僅使整個逆變器(qi)模塊更(geng)加緊湊, 而且大(da)大(da)減(jian)少了在(zai)應(ying)用(yong)(yong)電(dian)(dian)路(lu)中的(de)(de)雜(za)散電(dian)(dian)感, 使電(dian)(dian)路(lu)性能(neng)更(geng)優越(yue)。電(dian)(dian)動汽(qi)車用(yong)(yong)的(de)(de)電(dian)(dian)路(lu)設計具有高電(dian)(dian)壓、高有效電(dian)(dian)流(liu)、過電(dian)(dian)壓、反向(xiang)電(dian)(dian)壓、峰(feng)值電(dian)(dian)流(liu)和(he)長壽(shou)命, 而新(xin)能(neng)源用(yong)(yong)電(dian)(dian)容器(qi)無疑是電(dian)(dian)動汽(qi)車作(zuo)為直流(liu)支持(chi)電(dian)(dian)容器(qi)的(de)(de)最佳選擇。