新能(neng)源(yuan)汽車的(de)廣(guang)(guang)泛(fan)推廣(guang)(guang)帶動了汽車充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)站(zhan)(zhan)的(de)逐步建(jian)(jian)設(she)，但是充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)站(zhan)(zhan)也面臨著嚴(yan)(yan)重的(de)雷(lei)電(dian)(dian)(dian)(dian)(dian)災(zai)害(hai)威脅。雷(lei)電(dian)(dian)(dian)(dian)(dian)對新能(neng)源(yuan)汽車充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)站(zhan)(zhan)危(wei)害(hai)途徑(jing)主要有4 種：雷(lei)電(dian)(dian)(dian)(dian)(dian)直(zhi)擊(ji)(ji)、雷(lei)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)磁感應耦合、雷(lei)電(dian)(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)和地(di)電(dian)(dian)(dian)(dian)(dian)位反(fan)擊(ji)(ji)，這四種危(wei)害(hai)途徑(jing)當中(zhong)，雷(lei)電(dian)(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)造成的(de)雷(lei)害(hai)事故所(suo)占比重很大，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)站(zhan)(zhan)作(zuo)為建(jian)(jian)( 構) 筑物，一般(ban)其雷(lei)電(dian)(dian)(dian)(dian)(dian)直(zhi)擊(ji)(ji)防護措施較(jiao)為完善，但對雷(lei)電(dian)(dian)(dian)(dian)(dian)波(bo)侵(qin)入(ru)防護重視程(cheng)度(du)仍顯不足。低壓(ya)架空線(xian)(xian)路(lu)(lu)(lu)(lu)分布廣(guang)(guang)泛(fan)，直(zhi)接雷(lei)擊(ji)(ji)或(huo)線(xian)(xian)路(lu)(lu)(lu)(lu)附(fu)近雷(lei)擊(ji)(ji)導(dao)致線(xian)(xian)路(lu)(lu)(lu)(lu)上產生雷(lei)電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)，過(guo)(guo)(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)沿線(xian)(xian)路(lu)(lu)(lu)(lu)侵(qin)入(ru)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)站(zhan)(zhan)，造成站(zhan)(zhan)內(nei)電(dian)(dian)(dian)(dian)(dian)氣設(she)備(bei)絕緣(yuan)擊(ji)(ji)穿、相間短路(lu)(lu)(lu)(lu)，嚴(yan)(yan)重時造成設(she)備(bei)起火(huo)，超過(guo)(guo)(guo) 80% 的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)設(she)備(bei)事故是由雷(lei)電(dian)(dian)(dian)(dian)(dian)浪涌通過(guo)(guo)(guo)電(dian)(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)引入(ru)。

為此(ci)，新能源(yuan)汽(qi)車(che)充電(dian)樁(zhuang)雷(lei)擊(ji)浪(lang)涌(yong)防護措施必(bi)不可少。東沃電(dian)子（DOWOSEMI），專業高品質電(dian)路保護器(qi)件(jian)廠商及保護方(fang)(fang)案(an)服務(wu)商。東沃電(dian)子技術(shu)針對(dui)新能源(yuan)充電(dian)樁(zhuang)雷(lei)擊(ji)浪(lang)涌(yong)防護從(cong)電(dian)源(yuan)輸入(ru)端(duan)AC 220V和充電(dian)端(duan)口DC 12V方(fang)(fang)面進行方(fang)(fang)案(an)設計。

1）東沃汽車充電樁(zhuang)AC 220V雷擊浪涌防護方(fang)案

方案防護等級：8/20us組合波，差模、共模10KV（2Ω）。

保(bao)護器件選型：壓敏電阻MOV選用20D471K，陶瓷氣(qi)體(ti)放電管GDT選用2R600A(I)-N和2R3000A(I)-N，參數(shu)詳(xiang)情如下：

>> 壓敏(min)電阻(zu)20D471K參數：

最(zui)大通流(liu)能力6.5KA（8/20us組(zu)合(he)波，2Ω），考(kao)慮到壓敏電(dian)阻有衰減問題，該方案中已經將(jiang)壓敏電(dian)阻的規格適當地(di)提升(sheng)，并且配合(he)陶瓷氣(qi)體放電(dian)管做浪涌防護效果(guo)更好(hao)。

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

最大通(tong)流能(neng)力5KA（8/20us組(zu)合波，2Ω），陶瓷氣體放(fang)電(dian)管(guan)可(ke)靠性強(qiang)，在方(fang)案中(zhong)和壓敏(min)電(dian)阻配合使(shi)用(yong)能(neng)夠有效提高可(ke)靠性，并且解決(jue)了(le)陶瓷氣體放(fang)電(dian)管(guan)的續(xu)流問題。

2）東(dong)沃汽(qi)車充電樁DC 12V雷擊浪涌防護(hu)方案

方案防護等級：8/20us組合波，差模(mo)、共(gong)模(mo)20KV（2Ω）。

保護器件選型：壓敏電阻MOV選用20D820KJ，陶瓷氣體放電管GDT選用2R90A-Q，TVS二極管選用SMCJ15CA，參數詳情如下：

>> 壓(ya)敏電阻20D820KJ參數：

>> 陶瓷氣體放電管2R90A-Q參(can)數：

>> TVS二(er)極管SMCJ15CA參數：

TVS二極管SMCJ15CA超強(qiang)的(de)可靠性和極(ji)高的(de)電壓(ya)精度能有效地將線間異(yi)常過電壓(ya)鉗位到(dao)25V左(zuo)右(you)，保護到(dao)后端電路不受浪涌的(de)影響。

以上所提及的(de)(de)電(dian)(dian)(dian)路保護器件物料型號(hao)，品(pin)(pin)(pin)牌廠(chang)家東沃(wo)電(dian)(dian)(dian)子(zi)(zi)（DOWOSEMI）均已全面量產、交期(qi)穩定、價格美麗、服(fu)務(wu)優質(zhi)。同時，東沃(wo)電(dian)(dian)(dian)子(zi)(zi)擁有專業的(de)(de)應(ying)用實驗室，免(mian)費(fei)提供相關產品(pin)(pin)(pin)EMC測試服(fu)務(wu)，免(mian)費(fei)方案設計(ji)或整改優化，免(mian)費(fei)提供保護器件樣品(pin)(pin)(pin)。關于新能源汽車充電(dian)(dian)(dian)樁雷(lei)擊浪涌防護方案就分享(xiang)到這(zhe)兒(er)了，想了解更多，可(ke)咨詢東沃(wo)電(dian)(dian)(dian)子(zi)(zi)產品(pin)(pin)(pin)工程(cheng)師：137 5773 6996（微信同號(hao)）余工