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淺析福建電解電容器為什么會爆炸？

來源：jincuigu.com.cn 發布時間：2019-11-09 返回
　　　要想知道電解電容器為什么會爆炸，首先你得知道電解電容是什么？金屬箔為正級（鋁或鉭），與正級緊貼金屬的氧化膜（氧化鋁或五氧化二鉭）是電介質，陰級由導電材料、電解質（電解質可以是液體或固體）和其他材料共同組成，因電解質是陰級的主要部分，電解電容因此而得名。同時電解電容正負不可接錯。鋁電解電容器可以分為四類：引線型鋁電解電容器；牛角型鋁電解電容器；螺栓式鋁電解電容器；固態鋁電解電容器
　　　

電解電容器


　　　電解電容的(de)應用(yong)
　　　
　　　有級(ji)(ji)(ji)(ji)性(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)通常(chang)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)或中(zhong)頻、低(di)頻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)起(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)濾波(bo)、退耦、信(xin)號耦合及時間常(chang)數設定、隔直(zhi)流等作用(yong)。一般(ban)不能用(yong)于(yu)交流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，在直(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)作濾波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)使用(yong)時，其陽級(ji)(ji)(ji)(ji)（正級(ji)(ji)(ji)(ji)）應(ying)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的正級(ji)(ji)(ji)(ji)端(duan)相連(lian)接，陰級(ji)(ji)(ji)(ji)（負(fu)級(ji)(ji)(ji)(ji)）與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的負(fu)級(ji)(ji)(ji)(ji)端(duan)相連(lian)接，不能接反，否則(ze)會損壞電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)
　　　
　　　無級性電(dian)(dian)解電(dian)(dian)容器通常(chang)用(yong)于音箱分頻器電(dian)(dian)路、電(dian)(dian)視機S校正電(dian)(dian)路及單相電(dian)(dian)動機的起動電(dian)(dian)路。
　　　
　　　電(dian)(dian)解電(dian)(dian)容器廣泛應用于(yu)家用電(dian)(dian)器和各種(zhong)電(dian)(dian)子產品中，其(qi)容量范圍(wei)(wei)較(jiao)大(da)，一(yi)般為1~33000μF，額定(ding)工作(zuo)電(dian)(dian)壓范圍(wei)(wei)為6.3~700V。其(qi)缺點是介(jie)質損耗、容量誤差(cha)較(jiao)大(da)（較(jiao)大(da)允許偏差(cha)為+100、-20%），耐高(gao)溫性較(jiao)差(cha)，存放時間長容易失效(xiao)。
　　　
　　　電(dian)解(jie)電(dian)容(rong)(rong)(rong)的級(ji)(ji)性，注意觀(guan)察(cha)在電(dian)解(jie)電(dian)容(rong)(rong)(rong)的側面有(you)“-”是(shi)負級(ji)(ji)、“+”是(shi)正(zheng)級(ji)(ji)，如果電(dian)解(jie)電(dian)容(rong)(rong)(rong)上沒有(you)標明(ming)正(zheng)負級(ji)(ji)，也可以(yi)根據它的引腳(jiao)的長短來判斷，長腳(jiao)為正(zheng)級(ji)(ji)，短腳(jiao)為負級(ji)(ji)。
　　　
　　　電(dian)解電(dian)容(rong)爆炸(zha)原因
　　　
　　　1.正負級接(jie)反(fan)
　　　
　　　2.實(shi)際使用電(dian)(dian)壓高(gao)于(yu)電(dian)(dian)解電(dian)(dian)容(rong)標(biao)稱耐壓值
　　　
　　　3.電路中(zhong)的紋波過(guo)大
　　　
　　　4.使用溫度高過電容標稱值
　　　
　　　5.電容本(ben)身質量問題
　　　
　　　6.長時(shi)間(jian)使(shi)用后電解液減少，干(gan)枯，電容參數變化引起。

電容器知識