當蓄電(dian)(dian)池(chi)(chi)充足電(dian)(dian)后，充電(dian)(dian)機必須(xu)適時地切斷(duan)充電(dian)(dian)電(dian)(dian)流，否則蓄電(dian)(dian)池(chi)(chi)將出現(xian)大量出氣、失水和溫升等過充反應，直接危及蓄電(dian)(dian)池(chi)(chi)的使用壽(shou)命。因此，必須(xu)隨時監(jian)測蓄電(dian)(dian)池(chi)(chi)的充電(dian)(dian)狀況，保(bao)證電(dian)(dian)池(chi)(chi)充足電(dian)(dian)而又不(bu)過充電(dian)(dian)。主要的停充控(kong)制方法有(you)：

（1）定(ding)(ding)時(shi)(shi)控制(zhi)采(cai)用恒流充(chong)(chong)電(dian)(dian)法(fa)(fa)時(shi)(shi)，電(dian)(dian)池所需充(chong)(chong)電(dian)(dian)時(shi)(shi)間可(ke)(ke)根(gen)據電(dian)(dian)池容量(liang)和充(chong)(chong)電(dian)(dian)電(dian)(dian)流的大小很容易地確定(ding)(ding)，因此只要預(yu)先設定(ding)(ding)好(hao)充(chong)(chong)電(dian)(dian)時(shi)(shi)間，一(yi)旦時(shi)(shi)間一(yi)到，定(ding)(ding)時(shi)(shi)器即可(ke)(ke)發出信號停充(chong)(chong)或降為(wei)涓流充(chong)(chong)電(dian)(dian)。定(ding)(ding)時(shi)(shi)器可(ke)(ke)由(you)時(shi)(shi)間繼(ji)電(dian)(dian)器充(chong)(chong)當，或者由(you)單片機承擔其(qi)功(gong)能(neng)。這(zhe)種方(fang)法(fa)(fa)簡單，但充(chong)(chong)電(dian)(dian)時(shi)(shi)間不能(neng)根(gen)據電(dian)(dian)池充(chong)(chong)電(dian)(dian)前狀態而(er)自動(dong)調整，因此實際充(chong)(chong)電(dian)(dian)時(shi)(shi)，可(ke)(ke)能(neng)會出現有(you)時(shi)(shi)欠充(chong)(chong)、有(you)時(shi)(shi)過充(chong)(chong)的現象；

（2）電池(chi)溫(wen)度(du)控制對Ni-cd電池(chi)而言，正(zheng)常(chang)(chang)充(chong)電時(shi)，蓄(xu)電池(chi)的溫(wen)度(du)變(bian)(bian)化(hua)并不(bu)明顯，但是，當電池(chi)過充(chong)時(shi)，其內(nei)部氣體(ti)壓(ya)力將迅速(su)增(zeng)大，負極板上氧化(hua)反應使內(nei)部發熱(re)(re)，溫(wen)度(du)迅速(su)上升（每分鐘可(ke)升高幾個攝氏度(du)）。因此，觀(guan)察電池(chi)溫(wen)度(du)的變(bian)(bian)化(hua)，即可(ke)判斷電池(chi)是否已經充(chong)滿。通常(chang)(chang)采用(yong)兩只熱(re)(re)敏電阻分別檢(jian)測電池(chi)溫(wen)度(du)和環境溫(wen)度(du)，當兩者溫(wen)差達到一定值(zhi)時(shi)，即發出停充(chong)信號。由(you)于熱(re)(re)敏電阻動態響應速(su)度(du)較慢，故(gu)不(bu)能(neng)及時(shi)準確地檢(jian)測到電池(chi)的滿充(chong)狀態；

（3）電(dian)(dian)(dian)池(chi)端電(dian)(dian)(dian)壓(ya)(ya)負(fu)增(zeng)量控制一(yi)般(ban)(ban)而(er)言，當(dang)電(dian)(dian)(dian)池(chi)充(chong)足(zu)電(dian)(dian)(dian)后，其端電(dian)(dian)(dian)壓(ya)(ya)將呈現下降趨勢，據此(ci)可(ke)將電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓(ya)(ya)出現負(fu)增(zeng)長(chang)的(de)時刻作(zuo)為停充(chong)時刻。與溫度控制法(fa)相比，這種方(fang)法(fa)響應速度快，此(ci)外，電(dian)(dian)(dian)壓(ya)(ya)的(de)負(fu)增(zeng)量與電(dian)(dian)(dian)壓(ya)(ya)的(de)絕對值無關，因此(ci)這種停充(chong)控制方(fang)法(fa)可(ke)適應具有不同單格電(dian)(dian)(dian)池(chi)數的(de)蓄(xu)電(dian)(dian)(dian)池(chi)組充(chong)電(dian)(dian)(dian)。此(ci)方(fang)法(fa)的(de)缺點(dian)是一(yi)般(ban)(ban)的(de)檢測器靈敏度和可(ke)靠(kao)性不高，同時，當(dang)環境(jing)溫度較(jiao)高時，電(dian)(dian)(dian)池(chi)充(chong)足(zu)電(dian)(dian)(dian)后電(dian)(dian)(dian)壓(ya)(ya)的(de)減小并不明(ming)顯，因而(er)難以控制。