一、18650鋰電池怎么測量好壞
1、準備好萬用表,將萬用表表筆分別接觸18650電池的正負極,進行簡單的電壓測試,一般好的18650鋰電池的電壓在3.20V左右,壞的18650鋰電(dian)池(chi)一般是(shi)(shi)低電(dian)壓或者是(shi)(shi)沒有電(dian)壓的。
2、準備好內阻測試儀,將18650鋰電池放到內阻測試夾具上進行內阻測試,壞的18650鋰電池沒有內阻或者內阻阻值很小很小,而好的18650鋰(li)電池(chi)內阻(zu)一般在30毫歐以(yi)下,根(gen)據測試內阻(zu)結果進行簡(jian)單對比也能區分(fen)電池(chi)的好壞。
二、18650鋰電池壞了怎么修復
1、18650鋰離子電池表面有鐵銹的修復辦法:長(chang)時間使(shi)用(yong)的(de)鋰(li)離子電(dian)(dian)(dian)(dian)池的(de)金屬(shu)表面會有一定程度的(de)氧化(hua),導(dao)致電(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)極生(sheng)銹(xiu)(xiu),使(shi)得電(dian)(dian)(dian)(dian)池與(yu)用(yong)電(dian)(dian)(dian)(dian)設備導(dao)線接觸不好,鋰(li)離子電(dian)(dian)(dian)(dian)池使(shi)用(yong)時間變短,而用(yong)橡皮(pi)棕或(huo)其(qi)他清潔工具可擦(ca)除表面的(de)生(sheng)銹(xiu)(xiu)物質(zhi),可以降低(di)電(dian)(dian)(dian)(dian)路電(dian)(dian)(dian)(dian)阻,提高導(dao)電(dian)(dian)(dian)(dian)率。
2、冷熱交替法修復18650鋰離子電池:低溫能使(shi)鋰(li)離子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)部(bu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解(jie)液發(fa)生變(bian)化,促使(shi)剛(gang)(gang)剛(gang)(gang)經過(guo)冷凍的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)池(chi)發(fa)生化學反應。鋰(li)離子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)使(shi)用(yong)過(guo)程其實是(shi)一(yi)個充放電(dian)(dian)(dian)(dian)(dian)過(guo)程。在這期間(jian),18650電(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)的(de)(de)(de)陰電(dian)(dian)(dian)(dian)(dian)荷(he)和陽電(dian)(dian)(dian)(dian)(dian)荷(he)相互交(jiao)撞。電(dian)(dian)(dian)(dian)(dian)池(chi)之所(suo)以(yi)會越(yue)(yue)來(lai)越(yue)(yue)不經用(yong),是(shi)因為(wei)在正常(chang)的(de)(de)(de)室溫下(xia),電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)內(nei)部(bu)的(de)(de)(de)動能比較大,因而電(dian)(dian)(dian)(dian)(dian)池(chi)處于活(huo)躍(yue)狀(zhuang)態,漏(lou)電(dian)(dian)(dian)(dian)(dian)情況相對頻繁。而將鋰(li)離子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)放入低溫環(huan)境(jing)里,鋰(li)離子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)表(biao)面的(de)(de)(de)鋰(li)膜與電(dian)(dian)(dian)(dian)(dian)解(jie)液的(de)(de)(de)微(wei)觀結構,以(yi)及(ji)它們的(de)(de)(de)交(jiao)界面都會發(fa)生分明變(bian)化,導(dao)致電(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)部(bu)暫不活(huo)躍(yue),漏(lou)電(dian)(dian)(dian)(dian)(dian)流減(jian)少。所(suo)以(yi)再次(ci)充電(dian)(dian)(dian)(dian)(dian)后,電(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)可(ke)以(yi)一(yi)定程度的(de)(de)(de)恢復(fu)。
3、深度放電法修復電池:對手(shou)機進行深度放電(dian)(dian)(dian),就是通過耗(hao)盡(jin)內部(bu)電(dian)(dian)(dian)能(neng),來達(da)到(dao)更深程度的再充電(dian)(dian)(dian),這要(yao)采(cai)用(yong)一(yi)些非常規(gui)的辦(ban)法(fa)。想方法(fa)將18650電(dian)(dian)(dian)池(chi)與一(yi)個1.5V小(xiao)燈泡(pao)相(xiang)連(lian),鋰離子電(dian)(dian)(dian)池(chi)內部(bu)的電(dian)(dian)(dian)量會傳輸到(dao)小(xiao)燈泡(pao)上(shang),直到(dao)全(quan)部(bu)都放光(guang)。電(dian)(dian)(dian)池(chi)要(yao)通過較低的電(dian)(dian)(dian)壓慢(man)(man)慢(man)(man)耗(hao)盡(jin)電(dian)(dian)(dian)能(neng)。放完(wan)電(dian)(dian)(dian)后(hou),再次充電(dian)(dian)(dian)的電(dian)(dian)(dian)池(chi)可以使用(yong)更長時間。
4、高壓充電辦法修復電池:用鋰(li)離子電(dian)(dian)(dian)池(chi)高壓充(chong)(chong)電(dian)(dian)(dian)器(5V,300MA)充(chong)(chong)電(dian)(dian)(dian)5分鐘(zhong),充(chong)(chong)電(dian)(dian)(dian)器可以是手機(ji)充(chong)(chong)電(dian)(dian)(dian)器、充(chong)(chong)電(dian)(dian)(dian)頭,但(dan)是不(bu)能(neng)(neng)用萬能(neng)(neng)充(chong)(chong)電(dian)(dian)(dian)器,因為萬能(neng)(neng)充(chong)(chong)電(dian)(dian)(dian)器要識別電(dian)(dian)(dian)壓,五(wu)分鐘(zhong)后,再(zai)次(ci)探測電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓V,倘若電(dian)(dian)(dian)壓升到1V,持續充(chong)(chong)電(dian)(dian)(dian)(每隔5分鐘(zhong)一測電(dian)(dian)(dian)壓)。充(chong)(chong)電(dian)(dian)(dian)到3V。