大功率充電機電路
2019/3/13 13:03:54??????點擊：
大功率充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)(dian)(dian)路工作(zuo)(zuo)原理：220V市電(dian)(dian)(dian)(dian)(dian)(dian)經變壓(ya)(ya)(ya)(ya)(ya)器(qi)降壓(ya)(ya)(ya)(ya)(ya)，橋堆整流，C1、C2濾(lv)波后(hou)得到(dao)35V的(de)(de)(de)(de)脈動直流電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，從IC的(de)(de)(de)(de)第1、2腳輸(shu)(shu)入(ru)，該(gai)IC最高輸(shu)(shu)人(ren)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)可達40V。輸(shu)(shu)人(ren)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)經IC內(nei)部的(de)(de)(de)(de)振蕩調(diao)制為(wei)200kHz左右的(de)(de)(de)(de)開關電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，其內(nei)部的(de)(de)(de)(de)振蕩電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)和(he)頻率由(you)(you)第3腳的(de)(de)(de)(de)外(wai)接電(dian)(dian)(dian)(dian)(dian)(dian)容所決(jue)定。第4腳為(wei)抑制端，其閉鎖電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)閾值為(wei)0.7V，輸(shu)(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)經采樣電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)R2反饋至第4腳后(hou)與R1比較，當閾值電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)大于0．7V時，輸(shu)(shu)出(chu)(chu)關斷(duan)，起到(dao)短路過電(dian)(dian)(dian)(dian)(dian)(dian)流保護作(zuo)(zuo)用(yong)。第6腳為(wei)輸(shu)(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)調(diao)節(jie)端，由(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)位器(qi)RP及電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)R4將輸(shu)(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)分壓(ya)(ya)(ya)(ya)(ya)后(hou)得到(dao)調(diao)節(jie)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)。第7腳所接R3、C6為(wei)環(huan)路調(diao)節(jie)放大器(qi)的(de)(de)(de)(de)頻率補償電(dian)(dian)(dian)(dian)(dian)(dian)路。第8腳為(wei)輸(shu)(shu)出(chu)(chu)端，由(you)(you)晶(jing)體管(guan)V將電(dian)(dian)(dian)(dian)(dian)(dian)流進行(xing)擴大輸(shu)(shu)出(chu)(chu)。VD為(wei)反向續流二極管(guan)。L為(wei)市售的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)感器(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(shang)海施能電器設備有限公司始建于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(shang)海施能電器設備有限公司始建于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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