聚合物鋰電池零電壓的原因
鋰聚合物電池出現零電壓故障,首先要查找原因,然后針對原因做正確的處理。鋰聚合物電池出現零電壓的原因:
1)電(dian)池(chi)(chi)有(you)無遭受外部短路或過(guo)放、反(fan)充(將電(dian)池(chi)(chi)正負極或充電(dian)器正負極反(fan)接,電(dian)池(chi)(chi)充電(dian)時相當于強制過(guo)放);用電(dian)器電(dian)路是(shi)(shi)否(fou)正常;點焊品(pin)電(dian)池(chi)(chi)是(shi)(shi)否(fou)又燒焦的痕(hen)跡。
2)電池有無(wu)受高倍率大電流連續(xu)過充,導致電池機(ji)芯膨脹,內部正負(fu)極直接接觸短路(lu)。
3)電池(chi)極耳是否完好。
4)檢查電池(chi)是否零(低)電壓;
5)檢查電池組的連接及電子元件(jian)、保護電路有(you)無異(yi)常。
6)檢查充電(dian)(dian)設備或充電(dian)(dian)電(dian)(dian)路在充電(dian)(dian)狀態下有無充電(dian)(dian)電(dian)(dian)壓(ya)/電(dian)(dian)流輸出;
7)環境溫(wen)度(du)是否過高導致(zhi)充電(dian)效率低;
鋰聚合物(wu)電池出現(xian)零電壓的處理方(fang)法法
1)了解(jie)客戶電池(chi)的具體使用情況(kuang);
2)取同型(xing)號(hao)電(dian)池(chi)充(chong)電(dian)后接入(ru)用電(dian)器,判斷(duan)用電(dian)器是(shi)否正常;
3)將(jiang)電(dian)(dian)(dian)池(chi)以1C電(dian)(dian)(dian)流充電(dian)(dian)(dian)30分(fen)鐘(zhong)(zhong),開路(lu)放置10分(fen)鐘(zhong)(zhong)左右,如電(dian)(dian)(dian)池(chi)的(de)開路(lu)電(dian)(dian)(dian)壓(ya)(ya)穩定在電(dian)(dian)(dian)池(chi)的(de)正常電(dian)(dian)(dian)壓(ya)(ya)范圍內(nei),則(ze)電(dian)(dian)(dian)池(chi)可基本恢(hui)復(fu)正常。如電(dian)(dian)(dian)池(chi)已受破壞,則(ze)電(dian)(dian)(dian)壓(ya)(ya)無法(fa)恢(hui)復(fu);如電(dian)(dian)(dian)池(chi)未使用(yong)便出現(xian)此現(xian)象(xiang)后,用(yong)lC充電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)無法(fa)恢(hui)復(fu),則(ze)需專業技術人員進一步(bu)分(fen)析。
4)可建(jian)議客戶選用帶保險管、溫度開關等保護(hu)類電子元件或集(ji)成電路的電池(在(zai)過電流充(chong)放(fang)及(ji)短(duan)路、過充(chong)、過放(fang)、反充(chong)情況下(xia)斷開電路,從而保護(hu)電池不受破(po)壞(huai))。
5)建(jian)議客戶(hu)注意點(dian)焊電流和焊針間的(de)距離,并(bing)盡量(liang)減少來回折疊極耳的(de)次數。
6)了(le)解客戶對電池的具(ju)體使用情(qing)況及使用條件:
7)同單電池的步驟(zou)分析進行處(chu)理;
8)取同型號電(dian)池(chi)與萬用(yong)表(電(dian)流(liu)檔(dang))串入電(dian)路充(chong)電(dian),根據充(chong)電(dian)電(dian)流(liu)數(shu)值判斷(duan)充(chong)電(dian)設備是(shi)否正(zheng)常。
9)建(jian)議客(ke)戶選(xuan)用穩(wen)定性能較好的充(chong)電設備(bei)或充(chong)電電路(lu);
10)了解客戶是(shi)否(fou)屬于自(zi)行組裝(zhuang)電池組。如果沒(mei)有,或未使用(yong)前便(bian)有此類現象,則需專業技術(shu)人員作進一步的分析。





