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處理蓄電池充電機突然停電的方法

2019/4/18 14:37:44??????點擊:
當蓄(xu)電(dian)(dian)池(chi)(chi)充(chong)足(zu)電(dian)(dian)后,充(chong)電(dian)(dian)機必(bi)須適時(shi)地切(qie)斷充(chong)電(dian)(dian)電(dian)(dian)流,否則蓄(xu)電(dian)(dian)池(chi)(chi)將出現大量出氣、失(shi)水和溫(wen)升(sheng)等過(guo)充(chong)反(fan)應(ying),直(zhi)接危及蓄(xu)電(dian)(dian)池(chi)(chi)的(de)使用壽命。因此(ci),必(bi)須隨時(shi)監測蓄(xu)電(dian)(dian)池(chi)(chi)的(de)充(chong)電(dian)(dian)狀(zhuang)況(kuang),保證電(dian)(dian)池(chi)(chi)充(chong)足(zu)電(dian)(dian)而又不過(guo)充(chong)電(dian)(dian)。主要的(de)停充(chong)控制方法有:
(1)定(ding)(ding)時(shi)(shi)(shi)(shi)控制采用恒流充(chong)(chong)電(dian)(dian)法時(shi)(shi)(shi)(shi),電(dian)(dian)池所需(xu)充(chong)(chong)電(dian)(dian)時(shi)(shi)(shi)(shi)間(jian)可根據電(dian)(dian)池容量和充(chong)(chong)電(dian)(dian)電(dian)(dian)流的(de)大小很(hen)容易地確(que)定(ding)(ding),因(yin)此只(zhi)要預先設定(ding)(ding)好(hao)充(chong)(chong)電(dian)(dian)時(shi)(shi)(shi)(shi)間(jian),一旦時(shi)(shi)(shi)(shi)間(jian)一到(dao),定(ding)(ding)時(shi)(shi)(shi)(shi)器即可發出信號停充(chong)(chong)或(huo)降為涓流充(chong)(chong)電(dian)(dian)。定(ding)(ding)時(shi)(shi)(shi)(shi)器可由(you)時(shi)(shi)(shi)(shi)間(jian)繼(ji)電(dian)(dian)器充(chong)(chong)當,或(huo)者(zhe)由(you)單片機承擔其功(gong)能(neng)。這種方(fang)法簡單,但充(chong)(chong)電(dian)(dian)時(shi)(shi)(shi)(shi)間(jian)不能(neng)根據電(dian)(dian)池充(chong)(chong)電(dian)(dian)前狀態而自動(dong)調整,因(yin)此實際充(chong)(chong)電(dian)(dian)時(shi)(shi)(shi)(shi),可能(neng)會(hui)出現有時(shi)(shi)(shi)(shi)欠(qian)充(chong)(chong)、有時(shi)(shi)(shi)(shi)過充(chong)(chong)的(de)現象(xiang);
(2)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)溫(wen)(wen)(wen)度控制(zhi)對Ni-cd電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)而(er)言,正常充(chong)電(dian)(dian)(dian)(dian)時(shi),蓄電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)溫(wen)(wen)(wen)度變(bian)化(hua)并不明顯,但是,當電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)過(guo)充(chong)時(shi),其內(nei)部氣體壓力(li)將迅(xun)速(su)(su)增大,負極板上氧化(hua)反(fan)應(ying)使內(nei)部發熱(re),溫(wen)(wen)(wen)度迅(xun)速(su)(su)上升(sheng)(每分(fen)鐘(zhong)可升(sheng)高幾個攝氏度)。因(yin)此,觀察電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)溫(wen)(wen)(wen)度的(de)(de)變(bian)化(hua),即(ji)可判斷電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)是否已(yi)經充(chong)滿。通常采用兩只熱(re)敏電(dian)(dian)(dian)(dian)阻分(fen)別(bie)檢測電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)溫(wen)(wen)(wen)度和環境溫(wen)(wen)(wen)度,當兩者溫(wen)(wen)(wen)差達到一定值時(shi),即(ji)發出停充(chong)信號。由于熱(re)敏電(dian)(dian)(dian)(dian)阻動態響應(ying)速(su)(su)度較慢,故(gu)不能(neng)及時(shi)準確地檢測到電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)滿充(chong)狀態;
(3)電池端電壓負增量控制一般而言,當電池充足電后,其端電壓將呈現下降趨勢,據此可將電池電壓出現負增長的時刻作為停充時刻。與溫度控制法相比,這種方法響應速度快,此外,電壓的負增量與電壓的絕對值無關,因此這種停充控制方法可適應具有不同單格電池數的蓄電池組充電。此方法的缺點是一般的檢測器靈敏度和可靠性不高,同時,當環境溫度較高時,電池充足電后電壓的減小并不明顯,因而難以控制。上海施能電器設(she)備(bei)有限公司始建于1984年,上海市高新技術企業,中國工業車輛優秀配套供應商,上海電器行業名優產品,主要生產工頻系列充電機,高頻系列充電機,鋰電池充電機系列放電機系列充放電機等電器產品。
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