大功率充電機電路
2019/3/13 13:03:54??????點擊：
大(da)功(gong)率(lv)充電(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)路工(gong)作原理：220V市(shi)電(dian)(dian)(dian)經(jing)變壓(ya)(ya)(ya)(ya)器(qi)降壓(ya)(ya)(ya)(ya)，橋堆整流，C1、C2濾波后(hou)得(de)到35V的脈動直流電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，從IC的第(di)(di)(di)1、2腳(jiao)(jiao)(jiao)輸(shu)入(ru)，該IC最高輸(shu)人電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)可達40V。輸(shu)人的電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)經(jing)IC內(nei)部(bu)的振蕩調制為(wei)(wei)(wei)200kHz左(zuo)右的開關電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，其內(nei)部(bu)的振蕩電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和頻(pin)率(lv)由(you)第(di)(di)(di)3腳(jiao)(jiao)(jiao)的外接電(dian)(dian)(dian)容所決定。第(di)(di)(di)4腳(jiao)(jiao)(jiao)為(wei)(wei)(wei)抑(yi)制端，其閉鎖電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的閾值為(wei)(wei)(wei)0.7V，輸(shu)出(chu)(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)經(jing)采樣電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)R2反饋至第(di)(di)(di)4腳(jiao)(jiao)(jiao)后(hou)與R1比較，當閾值電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)大(da)于0．7V時，輸(shu)出(chu)(chu)關斷，起到短路過電(dian)(dian)(dian)流保(bao)護作用。第(di)(di)(di)6腳(jiao)(jiao)(jiao)為(wei)(wei)(wei)輸(shu)出(chu)(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)調節端，由(you)電(dian)(dian)(dian)位(wei)器(qi)RP及(ji)電(dian)(dian)(dian)阻R4將輸(shu)出(chu)(chu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)分壓(ya)(ya)(ya)(ya)后(hou)得(de)到調節電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。第(di)(di)(di)7腳(jiao)(jiao)(jiao)所接R3、C6為(wei)(wei)(wei)環路調節放大(da)器(qi)的頻(pin)率(lv)補償電(dian)(dian)(dian)路。第(di)(di)(di)8腳(jiao)(jiao)(jiao)為(wei)(wei)(wei)輸(shu)出(chu)(chu)端，由(you)晶體管(guan)V將電(dian)(dian)(dian)流進行擴(kuo)大(da)輸(shu)出(chu)(chu)。VD為(wei)(wei)(wei)反向續(xu)流二極(ji)管(guan)。L為(wei)(wei)(wei)市(shi)售(shou)的電(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(hai)施能電(dian)器設備(bei)有限公司始建(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(hai)施能電(dian)器設備(bei)有限公司始建(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。
- 上一篇：蓄電池充電機使用方法 2019/3/13
- 下一篇：充電機如何控制過充？ 2019/3/12