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使用電容器模塊時應注意哪些事項？

來源：jincuigu.com.cn 發布時間：2021-09-06 返回
  電容器用途廣泛。 與燃料電池等高能量密度材料相結合，電容器可以提供快速的能量釋放以滿足高功率需求，使燃料電池只能作為能源使用。 目前，電容器的能量密度可以高達20kW/kg，并開始占據傳統電容器和電池之間的市場。 先放電，尤其是電解電容。
  電容器
  在要(yao)(yao)求(qiu)高(gao)但對能量要(yao)(yao)求(qiu)低的(de)應(ying)(ying)用(yong)中(zhong)，法(fa)拉電(dian)(dian)(dian)容(rong)可(ke)(ke)用(yong)于替代傳統電(dian)(dian)(dian)池(chi)，在對能量要(yao)(yao)求(qiu)較高(gao)的(de)應(ying)(ying)用(yong)中(zhong)，電(dian)(dian)(dian)容(rong)可(ke)(ke)與電(dian)(dian)(dian)池(chi)組合使用(yong)。 更小、更經濟的(de)電(dian)(dian)(dian)池(chi)。 串(chuan)聯使用(yong)電(dian)(dian)(dian)容(rong)器。 由(you)于技術(shu)原因，單極電(dian)(dian)(dian)容(rong)的(de)附加工作電(dian)(dian)(dian)壓一般在2.8V左右，所以(yi)大(da)多數(shu)情況下需要(yao)(yao)串(chuan)聯使用(yong)。
  
  電(dian)容(rong)器(qi)具(ju)有(you)(you)固定的極(ji)(ji)性。 使(shi)用前應確定極(ji)(ji)性。 應在(zai)標稱(cheng)電(dian)壓(ya)下(xia)使(shi)用。 當(dang)電(dian)容(rong)電(dian)壓(ya)超過(guo)標稱(cheng)電(dian)壓(ya)時，會導致電(dian)解液分解，法(fa)拉電(dian)容(rong)發(fa)熱，容(rong)量下(xia)降，內(nei)(nei)阻增(zeng)大(da)，壽命縮短(duan)，在(zai)某些(xie)情況下(xia)電(dian)容(rong)功能會下(xia)降 坍塌。 高頻(pin)快速充放電(dian)會導致電(dian)容(rong)器(qi)內(nei)(nei)部發(fa)熱，容(rong)量衰減，內(nei)(nei)阻增(zeng)大(da)，在(zai)某些(xie)情況下(xia)，電(dian)容(rong)器(qi)的功能會崩(beng)潰。 電(dian)容(rong)器(qi)制造商不(bu)能放置(zhi)在(zai)相對(dui)(dui)濕度(du)(du)大(da)于(yu) 85% 或(huo)有(you)(you)有(you)(you)毒氣體(ti)的地方。 在(zai)這種(zhong)情況下(xia)，引線和(he)電(dian)容(rong)器(qi)外(wai)殼會腐蝕，從而導致開(kai)路。 外(wai)部環境溫度(du)(du)對(dui)(dui)使(shi)用壽命有(you)(you)顯著影響。 電(dian)容(rong)器(qi)應盡可能遠離熱源。
  
  任何電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)在(zai)通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時都會通(tong)(tong)過內(nei)部(bu)分(fen)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。 這種(zhong)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)稱為(wei)漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，會影響(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)單元(yuan)(yuan)的(de)自放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。 當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)模塊(kuai)串聯使用(yong)時，也需要(yao)平衡電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。 由(you)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，內(nei)部(bu)并聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)大小決定(ding)(ding)了(le)串聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)單元(yuan)(yuan)上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓分(fen)布。 當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓穩定(ding)(ding)時，每個單元(yuan)(yuan)上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓隨漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)而不是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)值而變化。 漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)越(yue)大，附加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓越(yue)小，反之，漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)越(yue)小，附加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓越(yue)高(gao)。

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