大功率充電機電路
2019/3/13 13:03:54??????點擊：
大功率充電(dian)(dian)(dian)機電(dian)(dian)(dian)路工作原理：220V市電(dian)(dian)(dian)經(jing)變壓(ya)(ya)(ya)(ya)(ya)器降壓(ya)(ya)(ya)(ya)(ya)，橋堆整流(liu)，C1、C2濾波(bo)后得(de)到35V的脈動直流(liu)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，從IC的第(di)(di)1、2腳輸(shu)(shu)(shu)入，該IC最高輸(shu)(shu)(shu)人(ren)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)可達(da)40V。輸(shu)(shu)(shu)人(ren)的電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)經(jing)IC內部的振蕩調(diao)制(zhi)為200kHz左右的開關電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，其內部的振蕩電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)和(he)頻率由(you)第(di)(di)3腳的外接(jie)電(dian)(dian)(dian)容(rong)所決定(ding)。第(di)(di)4腳為抑制(zhi)端(duan)，其閉(bi)鎖(suo)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的閾(yu)值為0.7V，輸(shu)(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)經(jing)采樣電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)R2反饋至第(di)(di)4腳后與R1比較，當閾(yu)值電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)大于0．7V時，輸(shu)(shu)(shu)出關斷，起到短路過電(dian)(dian)(dian)流(liu)保護作用。第(di)(di)6腳為輸(shu)(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)調(diao)節端(duan)，由(you)電(dian)(dian)(dian)位(wei)器RP及電(dian)(dian)(dian)阻(zu)R4將輸(shu)(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)分壓(ya)(ya)(ya)(ya)(ya)后得(de)到調(diao)節電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)。第(di)(di)7腳所接(jie)R3、C6為環路調(diao)節放大器的頻率補償(chang)電(dian)(dian)(dian)路。第(di)(di)8腳為輸(shu)(shu)(shu)出端(duan)，由(you)晶(jing)體管V將電(dian)(dian)(dian)流(liu)進行擴大輸(shu)(shu)(shu)出。VD為反向(xiang)續流(liu)二極管。L為市售的電(dian)(dian)(dian)感器。
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(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(shang)海施能電器設備有限公司始建于(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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