大功率充電機電路
2019/3/13 13:03:54??????點擊：
大(da)功率充電(dian)(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)工作原理：220V市(shi)電(dian)(dian)(dian)(dian)(dian)經變壓(ya)(ya)(ya)(ya)器(qi)降(jiang)壓(ya)(ya)(ya)(ya)，橋(qiao)堆整流，C1、C2濾(lv)波(bo)后得(de)(de)到35V的脈(mo)動直(zhi)流電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，從IC的第(di)(di)1、2腳(jiao)(jiao)輸(shu)(shu)(shu)(shu)入，該IC最高輸(shu)(shu)(shu)(shu)人電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)可(ke)達40V。輸(shu)(shu)(shu)(shu)人的電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)經IC內部的振(zhen)蕩調制(zhi)為(wei)(wei)200kHz左右(you)的開關(guan)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，其(qi)內部的振(zhen)蕩電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和頻(pin)率由(you)第(di)(di)3腳(jiao)(jiao)的外接(jie)電(dian)(dian)(dian)(dian)(dian)容所(suo)(suo)決定。第(di)(di)4腳(jiao)(jiao)為(wei)(wei)抑制(zhi)端，其(qi)閉鎖電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的閾(yu)值(zhi)為(wei)(wei)0.7V，輸(shu)(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)經采樣電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)R2反(fan)(fan)饋至第(di)(di)4腳(jiao)(jiao)后與R1比較，當閾(yu)值(zhi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)大(da)于0．7V時(shi)，輸(shu)(shu)(shu)(shu)出(chu)關(guan)斷(duan)，起(qi)到短路(lu)(lu)過(guo)電(dian)(dian)(dian)(dian)(dian)流保護作用(yong)。第(di)(di)6腳(jiao)(jiao)為(wei)(wei)輸(shu)(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)調節端，由(you)電(dian)(dian)(dian)(dian)(dian)位器(qi)RP及電(dian)(dian)(dian)(dian)(dian)阻R4將(jiang)輸(shu)(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)分壓(ya)(ya)(ya)(ya)后得(de)(de)到調節電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。第(di)(di)7腳(jiao)(jiao)所(suo)(suo)接(jie)R3、C6為(wei)(wei)環(huan)路(lu)(lu)調節放大(da)器(qi)的頻(pin)率補償電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)。第(di)(di)8腳(jiao)(jiao)為(wei)(wei)輸(shu)(shu)(shu)(shu)出(chu)端，由(you)晶體管(guan)V將(jiang)電(dian)(dian)(dian)(dian)(dian)流進行擴大(da)輸(shu)(shu)(shu)(shu)出(chu)。VD為(wei)(wei)反(fan)(fan)向續流二極管(guan)。L為(wei)(wei)市(shi)售(shou)的電(dian)(dian)(dian)(dian)(dian)感(gan)器(qi)。
大功率充電機元器件選擇：IC選用LA6350專用開關型穩壓集成電路，其外殼需接地并加一定的散熱器。橋堆電流應大于15A。電源變壓器用機床上的控制變壓器改制，容量一般在150W以上，變壓器的一次用φ0.27mm漆包線繞1200匝，二次用φlmm漆包線繞165匝即成。擴流晶體管V應選電流大于15A的大功率硅管，并加足夠的散熱片。VD用2CK10快速關斷型肖特基二極管。電阻R5的功率應在5W以上。集成塊第4腳所接電阻R1、R2精度要高，一定要用碳膜類。C3的漏電流要小。C4選用高頻瓷介電容。上海(hai)施(shi)能電(dian)器設備(bei)有(you)限公(gong)司始建于(yu)1984年，上海市高新技術企業，中國工業車輛優秀配套供應商，上海電器行業名優產品，主要生產工頻系列充電機，高頻系列充電機，鋰電池充電機，系列放電機，系列充放電機等電器產品。
大功率充電機元器件選擇：IC選用LA6350專用開關型穩壓集成電路，其外殼需接地并加一定的散熱器。橋堆電流應大于15A。電源變壓器用機床上的控制變壓器改制，容量一般在150W以上，變壓器的一次用φ0.27mm漆包線繞1200匝，二次用φlmm漆包線繞165匝即成。擴流晶體管V應選電流大于15A的大功率硅管，并加足夠的散熱片。VD用2CK10快速關斷型肖特基二極管。電阻R5的功率應在5W以上。集成塊第4腳所接電阻R1、R2精度要高，一定要用碳膜類。C3的漏電流要小。C4選用高頻瓷介電容。上海(hai)施(shi)能電(dian)器設備(bei)有(you)限公(gong)司始建于(yu)1984年，上海市高新技術企業，中國工業車輛優秀配套供應商，上海電器行業名優產品，主要生產工頻系列充電機，高頻系列充電機，鋰電池充電機，系列放電機，系列充放電機等電器產品。
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