大功率充電機電路
2019/3/13 13:03:54??????點擊：
大功率充電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)(dian)(dian)(dian)路工作原理：220V市電(dian)(dian)(dian)(dian)(dian)(dian)經(jing)(jing)變壓(ya)(ya)(ya)器(qi)降壓(ya)(ya)(ya)，橋(qiao)堆整(zheng)流(liu)，C1、C2濾波后得到(dao)35V的(de)(de)脈動直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，從IC的(de)(de)第(di)1、2腳(jiao)輸入(ru)，該(gai)IC最(zui)高(gao)輸人電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)可達40V。輸人的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)經(jing)(jing)IC內部(bu)的(de)(de)振蕩調制為(wei)200kHz左右的(de)(de)開關(guan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，其內部(bu)的(de)(de)振蕩電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和頻率由(you)第(di)3腳(jiao)的(de)(de)外接電(dian)(dian)(dian)(dian)(dian)(dian)容所決定(ding)。第(di)4腳(jiao)為(wei)抑制端，其閉鎖電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)閾值為(wei)0.7V，輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)經(jing)(jing)采樣(yang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)R2反饋至第(di)4腳(jiao)后與(yu)R1比較，當閾值電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)大于0．7V時，輸出(chu)(chu)(chu)關(guan)斷，起到(dao)短(duan)路過電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)保護(hu)作用。第(di)6腳(jiao)為(wei)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)調節端，由(you)電(dian)(dian)(dian)(dian)(dian)(dian)位器(qi)RP及電(dian)(dian)(dian)(dian)(dian)(dian)阻R4將(jiang)輸出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)分壓(ya)(ya)(ya)后得到(dao)調節電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。第(di)7腳(jiao)所接R3、C6為(wei)環路調節放大器(qi)的(de)(de)頻率補償電(dian)(dian)(dian)(dian)(dian)(dian)路。第(di)8腳(jiao)為(wei)輸出(chu)(chu)(chu)端，由(you)晶體(ti)管V將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)進(jin)行擴(kuo)大輸出(chu)(chu)(chu)。VD為(wei)反向(xiang)續流(liu)二極管。L為(wei)市售的(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。上海施(shi)能電器設備有限(xian)公(gong)司始(shi)建(jian)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。上海施(shi)能電器設備有限(xian)公(gong)司始(shi)建(jian)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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