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新(xin)能源(yuan)汽車的(de)廣泛推(tui)廣帶動了汽車充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)站的(de)逐步建設，但(dan)是充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)站也面臨著嚴重的(de)雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)災害威(wei)脅。雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)對(dui)新(xin)能源(yuan)汽車充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)站危(wei)害途徑主要有4 種：雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)直擊(ji)、雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)磁感應耦合、雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)(ru)和地電(dian)(dian)(dian)(dian)位反擊(ji)，這(zhe)四種危(wei)害途徑當中，雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)(ru)造成的(de)雷(lei)(lei)(lei)害事故所(suo)占比(bi)重很大，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)站作為建( 構) 築物，一般其(qi)雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)直擊(ji)防(fang)護措施較為完善(shan)，但(dan)對(dui)雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)(ru)防(fang)護重視程度仍顯不足。低壓架空(kong)線(xian)路(lu)(lu)分布廣泛，直接雷(lei)(lei)(lei)擊(ji)或(huo)線(xian)路(lu)(lu)附(fu)近(jin)雷(lei)(lei)(lei)擊(ji)導致線(xian)路(lu)(lu)上產生雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)過電(dian)(dian)(dian)(dian)壓，過電(dian)(dian)(dian)(dian)壓沿線(xian)路(lu)(lu)侵(qin)入(ru)(ru)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)站，造成站內(nei)電(dian)(dian)(dian)(dian)氣設備(bei)(bei)絕緣擊(ji)穿(chuan)、相(xiang)間短路(lu)(lu)，嚴重時造成設備(bei)(bei)起火，超過 80% 的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)設備(bei)(bei)事故是由雷(lei)(lei)(lei)電(dian)(dian)(dian)(dian)浪湧通(tong)過電(dian)(dian)(dian)(dian)源(yuan)線(xian)引入(ru)(ru)。

為此，新能(neng)源汽(qi)車充(chong)(chong)電(dian)樁雷擊浪湧防護(hu)措施必不(bu)可少。東沃(wo)電(dian)子（DOWOSEMI），專業高品質電(dian)路保護(hu)器件廠(chang)商及保護(hu)方案服務商。東沃(wo)電(dian)子技(ji)術針(zhen)對新能(neng)源充(chong)(chong)電(dian)樁雷擊浪湧防護(hu)從電(dian)源輸(shu)入端(duan)(duan)AC 220V和(he)充(chong)(chong)電(dian)端(duan)(duan)口DC 12V方面(mian)進行(xing)方案設計(ji)。

1）東(dong)沃汽(qi)車充電樁(zhuang)AC 220V雷擊浪湧防護方案

方案防護等級：8/20us組合波，差模、共模10KV（2Ω）。

保護器件選型(xing)：壓敏(min)電阻MOV選用20D471K，陶瓷氣體放電管GDT選用2R600A(I)-N和2R3000A(I)-N，參(can)數詳情如(ru)下：

>> 壓敏電阻20D471K參數：

最大通流能(neng)力6.5KA（8/20us組合波，2Ω），考慮到壓敏(min)電阻(zu)有衰減問題，該方案中已(yi)經將壓敏(min)電阻(zu)的規(gui)格適當地提升，並且配合陶瓷氣體放電管做浪湧防護效果更好。

>> 陶瓷(ci)氣體放電管2R600A(I)-N和(he)2R3000A(I)-N參數(shu)：

最大(da)通流能力(li)5KA（8/20us組合波，2Ω），陶瓷(ci)(ci)氣(qi)體(ti)放(fang)電(dian)管可(ke)(ke)靠性強(qiang)，在方案中和壓敏電(dian)阻配(pei)合使用能夠有效提高(gao)可(ke)(ke)靠性，並且解決(jue)了陶瓷(ci)(ci)氣(qi)體(ti)放(fang)電(dian)管的續流問題。

2）東沃汽車充電樁(zhuang)DC 12V雷擊浪湧防護方(fang)案

方案防(fang)護等級：8/20us組(zu)合波，差模、共模20KV（2Ω）。

保護(hu)器件選型：壓敏(min)電阻(zu)MOV選用20D820KJ，陶瓷氣(qi)體放電管GDT選用2R90A-Q，TVS二(er)極管選用SMCJ15CA，參數詳情如下：

>> 壓(ya)敏電(dian)阻20D820KJ參(can)數：

>> 陶瓷氣體(ti)放電管2R90A-Q參數：

>> TVS二極管(guan)SMCJ15CA參數：

TVS二(er)極管SMCJ15CA超強的(de)可靠性和極高的(de)電壓(ya)精度能有效地(di)將線間異常(chang)過電壓(ya)鉗(qian)位(wei)到25V左右，保護到後(hou)端電路(lu)不受浪湧的(de)影(ying)響。

以(yi)上所提(ti)(ti)及(ji)的(de)電(dian)路(lu)保(bao)護(hu)器(qi)件物料(liao)型(xing)號(hao)，品(pin)(pin)牌廠家東(dong)沃電(dian)子(zi)（DOWOSEMI）均已全(quan)面量產(chan)、交(jiao)期穩定、價格美麗、服(fu)務優質。同(tong)時，東(dong)沃電(dian)子(zi)擁有專業的(de)應用(yong)實驗(yan)室，免費(fei)提(ti)(ti)供相關產(chan)品(pin)(pin)EMC測(ce)試(shi)服(fu)務，免費(fei)方案設(she)計(ji)或整改優化，免費(fei)提(ti)(ti)供保(bao)護(hu)器(qi)件樣品(pin)(pin)。關於新(xin)能源汽車充電(dian)樁雷擊(ji)浪(lang)湧防護(hu)方案就分享到(dao)這兒了，想了解更(geng)多(duo)，可咨詢(xun)東(dong)沃電(dian)子(zi)產(chan)品(pin)(pin)工(gong)程師：137 5773 6996（微(wei)信同(tong)號(hao)）余工(gong)