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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)(xu)電(dian)(dian)池(chi)充足(zu)電(dian)(dian)后,充電(dian)(dian)機必須(xu)適時地切斷充電(dian)(dian)電(dian)(dian)流,否則蓄(xu)(xu)電(dian)(dian)池(chi)將出現大(da)量出氣、失(shi)水和溫升(sheng)等(deng)過充反應,直接危及蓄(xu)(xu)電(dian)(dian)池(chi)的使用壽(shou)命。因(yin)此,必須(xu)隨時監測蓄(xu)(xu)電(dian)(dian)池(chi)的充電(dian)(dian)狀(zhuang)況(kuang),保證電(dian)(dian)池(chi)充足(zu)電(dian)(dian)而又(you)不過充電(dian)(dian)。主要的停充控制(zhi)方法有:
(1)定時(shi)控制采用恒流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)法(fa)時(shi),電(dian)(dian)(dian)(dian)池所需充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)間(jian)可(ke)根據電(dian)(dian)(dian)(dian)池容(rong)(rong)量和充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)的大小很容(rong)(rong)易地確定,因此只要(yao)預先設定好充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)間(jian),一(yi)(yi)旦時(shi)間(jian)一(yi)(yi)到,定時(shi)器即(ji)可(ke)發出信號停充(chong)(chong)或(huo)降(jiang)為(wei)涓(juan)流(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)。定時(shi)器可(ke)由時(shi)間(jian)繼電(dian)(dian)(dian)(dian)器充(chong)(chong)當(dang),或(huo)者由單片機承擔其功能(neng)。這種方法(fa)簡單,但(dan)充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)間(jian)不能(neng)根據電(dian)(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)(dian)前狀態而自動調整,因此實(shi)際充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi),可(ke)能(neng)會出現有(you)時(shi)欠充(chong)(chong)、有(you)時(shi)過充(chong)(chong)的現象(xiang);
(2)電(dian)池(chi)溫(wen)度(du)(du)(du)控制對Ni-cd電(dian)池(chi)而言,正常充(chong)電(dian)時,蓄電(dian)池(chi)的(de)溫(wen)度(du)(du)(du)變化并不明顯,但(dan)是(shi),當電(dian)池(chi)過充(chong)時,其(qi)內(nei)部氣(qi)體壓力將迅(xun)速增大,負極板(ban)上(shang)氧化反應使內(nei)部發熱(re)(re),溫(wen)度(du)(du)(du)迅(xun)速上(shang)升(sheng)(每分鐘(zhong)可(ke)升(sheng)高幾個(ge)攝氏度(du)(du)(du))。因(yin)此(ci),觀察(cha)電(dian)池(chi)溫(wen)度(du)(du)(du)的(de)變化,即可(ke)判斷電(dian)池(chi)是(shi)否已經充(chong)滿(man)。通常采用(yong)兩(liang)(liang)只熱(re)(re)敏(min)電(dian)阻分別(bie)檢測電(dian)池(chi)溫(wen)度(du)(du)(du)和環境溫(wen)度(du)(du)(du),當兩(liang)(liang)者溫(wen)差達到一定值時,即發出(chu)停充(chong)信號(hao)。由于熱(re)(re)敏(min)電(dian)阻動態(tai)響應速度(du)(du)(du)較慢(man),故不能及時準確地檢測到電(dian)池(chi)的(de)滿(man)充(chong)狀態(tai);
(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。上海施能電器設備有限公司始建于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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