關于蓄電池浮(fu)充運行狀態(tai)是(shi)怎樣(yang)的？

決(jue)定(ding)電(dian)(dian)池(chi)壽命的(de)要素(su)有三(san)個:第(di)一是(shi)產品質量(liang);第(di)二是(shi)維護的(de)情況(kuang);第(di)三(san)是(shi)決(jue)定(ding)電(dian)(dian)池(chi)是(shi)否處于良(liang)好的(de)浮充(chong)運行狀(zhuang)態。當交(jiao)流(liu)(liu)電(dian)(dian)正常供應時,負載(zai)電(dian)(dian)流(liu)(liu)由交(jiao)流(liu)(liu)電(dian)(dian)經整流(liu)(liu)后直接供電(dian)(dian)于負載(zai),蓄電(dian)(dian)池(chi)處于微電(dian)(dian)流(liu)(liu)(補充(chong)其自放電(dian)(dian)所耗(hao)電(dian)(dian)能(neng))充(chong)電(dian)(dian)狀(zhuang)態;當交(jiao)流(liu)(liu)電(dian)(dian)停供時才由蓄電(dian)(dian)池(chi)單獨(du)供電(dian)(dian)于負載(zai),故蓄電(dian)(dian)池(chi)經常處于充(chong)足狀(zhuang)態,大大減少(shao)了充(chong)放電(dian)(dian)循(xun)環周期(qi),可(ke)延長了電(dian)(dian)池(chi)壽命。

1.關于浮充電壓的選擇

蓄電(dian)(dian)(dian)(dian)池浮充(chong)電(dian)(dian)(dian)(dian)壓的選擇是對(dui)電(dian)(dian)(dian)(dian)池維護得好(hao)壞的關鍵。如果選擇得太(tai)高,會使浮充(chong)電(dian)(dian)(dian)(dian)流太(tai)大,不僅增加能(neng)耗(hao),對(dui)于密封(feng)電(dian)(dian)(dian)(dian)池來說,還會因劇(ju)烈分解(jie)出氫氧氣體(ti)而使電(dian)(dian)(dian)(dian)池爆炸(zha)。如果選擇太(tai)低,則會使電(dian)(dian)(dian)(dian)池經常(chang)充(chong)電(dian)(dian)(dian)(dian)不足而導致(zhi)電(dian)(dian)(dian)(dian)池加速報(bao)廢。

2.低電壓恒壓充電(均(jun)衡充電)技(ji)術

所謂低壓恒壓充電,即過去傳統的恒壓充電法,但其不同點是,低電壓恒壓充電一般采用每只蓄電池平均端電壓為2.25～2.35V的恒定電壓充電。當蓄電池放出很大(da)容(rong)量(A?h)而電(dian)(dian)勢較低(di)時,充(chong)電(dian)(dian)之初為防止充(chong)電(dian)(dian)電(dian)(dian)流過(guo)大(da),充(chong)電(dian)(dian)整(zheng)流器應具有(you)限流特性,故仍處于恒流充(chong)電(dian)(dian)狀態。當充(chong)入(ru)一定容(rong)量(A?h)后,蓄電(dian)(dian)池(chi)電(dian)(dian)勢升高,充(chong)電(dian)(dian)電(dian)(dian)流才逐漸減小。這(zhe)種充(chong)電(dian)(dian)方式(shi)由于有(you)以(yi)下優點而被推廣(guang)使用。

充(chong)電(dian)(dian)(dian)末期的(de)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)很小,故氫氣(qi)(qi)和氧氣(qi)(qi)和產生(sheng)量極小。它能改(gai)善勞動條件、降低機房(fang)標準,是全密閉電(dian)(dian)(dian)池適用(yong)(yong)的(de)充(chong)電(dian)(dian)(dian)方式;充(chong)電(dian)(dian)(dian)末期的(de)電(dian)(dian)(dian)壓低,對程控電(dian)(dian)(dian)源等允(yun)許用(yong)(yong)電(dian)(dian)(dian)壓變化范圍較寬的(de)用(yong)(yong)電(dian)(dian)(dian)設備供電(dian)(dian)(dian)時,可在不脫離負載(zai)的(de)情況下(xia)進行正常充(chong)電(dian)(dian)(dian),以簡化操作(zuo),提高可靠(kao)性;整流(liu)器的(de)輸出電(dian)(dian)(dian)壓最(zui)大值較小,可減小整流(liu)器中變壓器的(de)設計(ji)重量。