電(dian)動車電(dian)池充電(dian)為何發熱? 電(dian)動車電(dian)池發熱原(yuan)因

據(ju)電(dian)動車(che)(che)(che)車(che)(che)(che)主反(fan)映電(dian)動車(che)(che)(che)電(dian)池在充電(dian)時(shi)(shi)有(you)(you)發(fa)熱現象，現在正是溫度上升(sheng)的(de)時(shi)(shi)節，電(dian)動車(che)(che)(che)電(dian)池在充電(dian)時(shi)(shi)發(fa)熱的(de)幾率(lv)將逐漸增加，它又將成(cheng)為電(dian)動車(che)(che)(che)車(che)(che)(che)主的(de)憂心之患！因(yin)此，我(wo)在這里為廣大電(dian)動車(che)(che)(che)車(che)(che)(che)主簡單分析一下電(dian)池發(fa)熱的(de)原因(yin)，以為電(dian)池發(fa)熱又不知(zhi)原因(yin)的(de)用戶解惑(huo)，希(xi)望能對(dui)大家有(you)(you)所助益!

電(dian)動車(che)電(dian)池發熱有兩種情況，一(yi)種是(shi)放(fang)電(dian)發熱，另(ling)一(yi)種是(shi)充電(dian)發熱。

1、放電發熱

放(fang)電發熱的原因主要有：放(fang)電過快，有可能是(shi)電池容量小，放(fang)電電流長時(shi)間(jian)超過0．5C。

1）當電(dian)動機額定電(dian)壓值低，電(dian)池容量較(jiao)小，工作電(dian)流偏(pian)大時，電(dian)壓會急劇降低，容量也很快消耗(hao)，對電(dian)池最為不利。

2）電(dian)(dian)池(chi)的電(dian)(dian)化學反應速度(du)僅(jin)能(neng)夠維持行車，經常做(zuo)整循環充放電(dian)(dian)，稍不注意便會超(chao)消耗。遇到迎風上坡，耗電(dian)(dian)甚大，迫使電(dian)(dian)池(chi)極板急劇反應，電(dian)(dian)池(chi)外殼的熱(re)度(du)較高，會使電(dian)(dian)池(chi)受(shou)到損傷，縮短壽命。

3）比較(jiao)理想的(de)(de)是(shi)電(dian)(dian)池(chi)(chi)的(de)(de)電(dian)(dian)化學反應速度充分地(di)供(gong)給足(zu)夠(gou)的(de)(de)電(dian)(dian)能。電(dian)(dian)池(chi)(chi)的(de)(de)外(wai)殼沒有異常(chang)熱(re)度，說明電(dian)(dian)池(chi)(chi)容量是(shi)足(zu)夠(gou)的(de)(de)。

2、充電發熱

充電(dian)過(guo)程中發熱，可(ke)能的故障原(yuan)因(yin)有：

1）電(dian)(dian)池(chi)(chi)自身(shen)問(wen)題，電(dian)(dian)池(chi)(chi)的衰老(lao)，內阻(zu)變大(da)，電(dian)(dian)解液干涸，內部有短路等(deng)造成發熱。電(dian)(dian)池(chi)(chi)隨著使用的次(ci)數增加，這包括放電(dian)(dian)和充電(dian)(dian)，電(dian)(dian)池(chi)(chi)中(zhong)(zhong)的水分子逐漸流失(shi)，這就是我們(men)講的電(dian)(dian)池(chi)(chi)析氣、失(shi)水，從而(er)導(dao)致(zhi)電(dian)(dian)池(chi)(chi)在(zai)電(dian)(dian)化學反應中(zhong)(zhong)發熱；另外則(ze)是電(dian)(dian)池(chi)(chi)溶液在(zai)充放電(dian)(dian)過程中(zhong)(zhong)形成硫酸結晶(jing)、沉淀(dian)粘糊在(zai)鉛板上，導(dao)致(zhi)電(dian)(dian)池(chi)(chi)電(dian)(dian)阻(zu)增大(da)而(er)發熱；這兩(liang)類問(wen)題可以通(tong)過加水、去硫去極等(deng)技術手段予以解決。如若電(dian)(dian)池(chi)(chi)是因(yin)短跑斷格導(dao)致(zhi)的電(dian)(dian)池(chi)(chi)發熱，那(nei)最好更換新電(dian)(dian)池(chi)(chi)。

2）充(chong)(chong)電(dian)(dian)器(qi)問題，一般的充(chong)(chong)電(dian)(dian)器(qi)沒(mei)有脈沖功能(neng)(neng)，更沒(mei)有負脈沖消除(chu)極(ji)化功能(neng)(neng)，這(zhe)類(lei)充(chong)(chong)電(dian)(dian)器(qi)通常不(bu)能(neng)(neng)在充(chong)(chong)電(dian)(dian)后期恒(heng)壓，以至造成電(dian)(dian)池(chi)(chi)電(dian)(dian)壓超過(guo)(guo)允許值，從(cong)而導致(zhi)電(dian)(dian)池(chi)(chi)大量析氣、失水、發熱。 現在市(shi)場(chang)上的普(pu)通充(chong)(chong)電(dian)(dian)器(qi)，只(zhi)是(shi)(shi)(shi)一昧的恒(heng)功率(lv)充(chong)(chong)電(dian)(dian)，或是(shi)(shi)(shi)對電(dian)(dian)池(chi)(chi)內部電(dian)(dian)阻等(deng)情況不(bu)能(neng)(neng)及時檢測，檢測到了也不(bu)能(neng)(neng)做出(chu)及進的充(chong)(chong)電(dian)(dian)調整或不(bu)能(neng)(neng)給出(chu)最佳的充(chong)(chong)電(dian)(dian)方案，這(zhe)些都是(shi)(shi)(shi)充(chong)(chong)電(dian)(dian)過(guo)(guo)程(cheng)中導致(zhi)電(dian)(dian)池(chi)(chi)發熱的原(yuan)因。

要從(cong)根本(ben)上解決因(yin)充(chong)電器(qi)問題(ti)導(dao)致的電池發熱(re)，就須正確選用電動車充(chong)電器(qi)，電池的充(chong)電過程是一個電化學反應過程，在這(zhe)個過程中，電池若出(chu)現微量發熱(re)情況則屬(shu)正常(chang)(chang)發熱(re)，如若發熱(re)異常(chang)(chang)，在電池性(xing)能良好的情況下則屬(shu)充(chong)電器(qi)原因(yin)。