一、車載手機充電器原理是什么

車載手機充電器即車載充電器，是指用于(yu)安裝在車(che)上給手(shou)機等智能設備(bei)提供充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)的(de)(de)設備(bei)，車(che)載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)工作原理(li)是：用汽車(che)點煙器作為電(dian)(dian)(dian)(dian)(dian)源插座直(zhi)接為手(shou)機充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，一般情(qing)況(kuang)下(xia)，汽車(che)點煙器插座的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓為12V或24V，車(che)載充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器的(de)(de)作用就是將12V或24V的(de)(de)直(zhi)流電(dian)(dian)(dian)(dian)(dian)轉換為5V的(de)(de)USB電(dian)(dian)(dian)(dian)(dian)壓直(zhi)流電(dian)(dian)(dian)(dian)(dian)，并通(tong)過充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)線(xian)給電(dian)(dian)(dian)(dian)(dian)子產品充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)。

用車(che)載(zai)(zai)充電(dian)器(qi)要(yao)注(zhu)意的是(shi)，由于汽車(che)提供的電(dian)壓較低，所(suo)以車(che)載(zai)(zai)充電(dian)器(qi)內(nei)部(bu)需要(yao)有(you)過(guo)(guo)載(zai)(zai)保護電(dian)路：車(che)載(zai)(zai)充電(dian)器(qi)的前端設計有(you)一個保險(xian)管，當電(dian)流超過(guo)(guo)過(guo)(guo)載(zai)(zai)保護電(dian)路可承受范(fan)圍時(shi)，保險(xian)絲立即熔(rong)斷(duan)，起到保護作用。不(bu)過(guo)(guo)保險(xian)絲熔(rong)斷(duan)就會導(dao)致車(che)載(zai)(zai)充電(dian)器(qi)被燒掉，那么車(che)載(zai)(zai)充電(dian)器(qi)燒掉了怎么辦呢？

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二、車載usb充電器燒壞了怎么辦

車載usb充電器燒壞了的原(yuan)因和解(jie)決(jue)方(fang)法有：

1、車載充電器質量問題

質量問題導致電(dian)壓(ya)不穩，燒壞是很(hen)正常(chang)的(de)，還有一(yi)些劣質車(che)載(zai)充電(dian)器甚至沒有保(bao)險絲，一(yi)旦(dan)發生(sheng)故障可能燒壞的(de)不是車(che)載(zai)充電(dian)器，而是手機(ji)或是汽車(che)電(dian)瓶，因此一(yi)定要購買正規的(de)車(che)載(zai)充電(dian)器。

2、車載充電器保險絲斷了

車(che)載(zai)充電器的(de)電流超過保(bao)(bao)(bao)護電路承受范(fan)圍時(shi)，保(bao)(bao)(bao)險(xian)(xian)絲(si)會(hui)熔(rong)斷保(bao)(bao)(bao)護，這時(shi)候一般(ban)更(geng)換(huan)一根保(bao)(bao)(bao)險(xian)(xian)絲(si)即可，不(bu)過要注(zhu)意(yi)的(de)是，許多車(che)主擔(dan)心會(hui)再(zai)次(ci)熔(rong)斷，圖方(fang)便選(xuan)擇更(geng)換(huan)更(geng)大(da)安數的(de)保(bao)(bao)(bao)險(xian)(xian)絲(si)，但這是非常(chang)危險(xian)(xian)的(de)，很可能造成(cheng)下(xia)次(ci)保(bao)(bao)(bao)險(xian)(xian)絲(si)熔(rong)斷不(bu)及時(shi)引發更(geng)危險(xian)(xian)的(de)后果。

3、車載充電器插頭設計不合理

車充插頭(tou)設計有問(wen)題，導致插頭(tou)插入(ru)后(hou)(hou)，插頭(tou)內的保險絲金屬(shu)帽后(hou)(hou)縮，會與插頭(tou)側的兩(liang)個彈片(pian)接觸而造成短路。遇上這種問(wen)題，解決(jue)方法(fa)時(shi)給買來的車充在保險管周(zhou)加上一層絕緣層，保證(zheng)保險絲金屬(shu)帽不會與插頭(tou)側的兩(liang)個彈片(pian)接觸即可。