通信電源系統中，為了確保直流電源不間斷，通常采用開關整流器與蓄電池組并聯的浮充供電方式。標準型單體閥控鉛蓄電池浮充電壓通常設置在2.25V，允許變化范圍為2.23~2.27伏。電池放完后，應先用恒流充電，當電池電壓達到設定的浮充電壓時，再轉為恒壓充電。

通信電(dian)源系統(tong)中，閥控鉛(qian)蓄電(dian)池組(zu)通常由24只單體(ti)電(dian)池串聯組(zu)成，開關整流器的浮充電(dian)壓(ya)應設置為54伏(fu)（2.25×24）或54.5伏(fu)（2.27×24）。

加速壽命試驗(yan)表明：浮充電(dian)壓與規定值差5%，電(dian)池浮充壽命縮短(duan)一半。

浮充電(dian)壓設置過低時，閥控電(dian)池長期(qi)處于欠充電(dian)狀態，極板深處的(de)(de)活性(xing)物質不能參與化(hua)學反應，因(yin)而在活性(xing)物質與板柵之間形(xing)成高電(dian)阻(zu)層，因(yin)此，電(dian)池的(de)(de)內阻(zu)增(zeng)大，容量(liang)下降。

浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)設(she)置(zhi)過高時，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)將長期處于過充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)狀態，因此(ci)，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)內(nei)產生的(de)(de)氣體(ti)量增(zeng)(zeng)加(jia)，安全閥(fa)經常處于開(kai)閥(fa)狀態，電(dian)(dian)(dian)(dian)解液中的(de)(de)水(shui)分(fen)大(da)(da)量損失(shi)(shi)。通常，水(shui)分(fen)損失(shi)(shi)15%，電(dian)(dian)(dian)(dian)他的(de)(de)容(rong)量就(jiu)減(jian)小15%。此(ci)時，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)壽命(ming)就(jiu)終止了。此(ci)外，浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)設(she)置(zhi)過高時，浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)流(liu)過大(da)(da)。試驗(yan)表明(ming)，單(dan)體(ti)閥(fa)控鉛蓄(xu)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)升高100mV，浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)流(liu)可(ke)增(zeng)(zeng)大(da)(da)10倍。浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)流(liu)過大(da)(da)時，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)內(nei)產生的(de)(de)熱(re)量不能及時散掉(diao)，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)中將出現(xian)熱(re)量積累(lei)，從而使電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)溫度升高。這(zhe)樣又促使浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)流(liu)增(zeng)(zeng)大(da)(da)，最終造成電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)溫度和電(dian)(dian)(dian)(dian)流(liu)不斷增(zeng)(zeng)加(jia)的(de)(de)惡性循環，這(zhe)種(zhong)現(xian)象通常稱為熱(re)失(shi)(shi)控。：浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)設(she)置(zhi)在2.28V（25°C）時，12~18個月后，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)容(rong)量嚴重(zhong)下降并可(ke)導(dao)致熱(re)失(shi)(shi)控；浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)設(she)置(zhi)在2.30V（25°C時，6~8個后可(ke)能出現(xian)熱(re)失(shi)(shi)控；浮(fu)(fu)(fu)(fu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)壓(ya)設(she)置(zhi)在

2.35V（25°C）時(shi)，4個月后(hou)就(jiu)可能出(chu)現熱(re)失控。

在通信(xin)電(dian)(dian)(dian)源(yuan)系統中，閥控鉛(qian)蓄電(dian)(dian)(dian)池(chi)(chi)組通常都(dou)由24只單體電(dian)(dian)(dian)池(chi)(chi)串(chuan)聯組成。開(kai)(kai)(kai)關(guan)整(zheng)(zheng)流器(qi)(qi)的浮(fu)充(chong)電(dian)(dian)(dian)壓(ya)(ya)應當設置在54V（2.25V×24）或(huo)54.5V（2.27V×24）。但是，目前有(you)一(yi)(yi)些(xie)開(kai)(kai)(kai)關(guan)整(zheng)(zheng)流器(qi)(qi)的浮(fu)充(chong)電(dian)(dian)(dian)壓(ya)(ya)設置在52V，這(zhe)(zhe)樣，標(biao)準(zhun)型閥控鉛(qian)蓄電(dian)(dian)(dian)池(chi)(chi)將長期充(chong)不足電(dian)(dian)(dian)。另外，也有(you)一(yi)(yi)些(xie)開(kai)(kai)(kai)關(guan)整(zheng)(zheng)流器(qi)(qi)為了不進行均衡(heng)充(chong)電(dian)(dian)(dian)，浮(fu)充(chong)電(dian)(dian)(dian)壓(ya)(ya)設置得過高(gao)，這(zhe)(zhe)樣也將嚴重影響電(dian)(dian)(dian)池(chi)(chi)壽(shou)命。加速壽(shou)命詞。，浮(fu)充(chong)電(dian)(dian)(dian)壓(ya)(ya)與規定值相差5%，電(dian)(dian)(dian)他的浮(fu)充(chong)壽(shou)命將縮短(duan)一(yi)(yi)半。

2）浮充電(dian)壓與溫度的關系

浮充(chong)電(dian)壓的溫(wen)度系數約(yue)為：

3mv//C溫(wen)度(du)(du)每升高(gao)1C單體電(dian)池(chi)的(de)浮(fu)充(chong)(chong)電(dian)壓(ya)應(ying)當(dang)下降(jiang)3mv. 試驗表明，在浮(fu)充(chong)(chong)電(dian)壓(ya)不變的(de)條件下，環境(jing)溫(wen)度(du)(du)升高(gao)10℃，閥(fa)控鉛蓄(xu)電(dian)池(chi)的(de)浮(fu)充(chong)(chong)電(dian)流將增加(jia)10倍。

3）浮充壽命與環(huan)境溫(wen)度的關系電(dian)在浮充狀態(tai)下(xia)，閥控鉛(qian)蓄電(dian)池能夠正常供電(dian)的時間稱為浮充壽命。

加速(su)壽命(ming)試驗結果表明，在25度(du)時，國(guo)外閥控鉛(qian)蓄(xu)電(dian)池(chi)的(de)浮(fu)充(chong)壽命(ming)可達20年(nian)，國(guo)產2V閥控鉛(qian)蓄(xu)電(dian)池(chi)的(de)浮(fu)充(chong)壽命(ming)也可達到10年(nian)以上。

環境溫(wen)度(du)升(sheng)高后(hou)，浮充電(dian)(dian)(dian)(dian)(dian)流(liu)增大，板柵腐(fu)蝕加(jia)速(su)，產生(sheng)氫氣(qi)的電(dian)(dian)(dian)(dian)(dian)位降低，電(dian)(dian)(dian)(dian)(dian)池(chi)內將發(fa)生(sheng)電(dian)(dian)(dian)(dian)(dian)解水(shui)反應。同時，溫(wen)度(du)越(yue)高，電(dian)(dian)(dian)(dian)(dian)解液中水(shui)分蒸發(fa)得越(yue)快。通(tong)常溫(wen)度(du)每升(sheng)高10C，水(shui)分蒸發(fa)損失(shi)約增加(jia)一倍，水(shui)分減少后(hou)，電(dian)(dian)(dian)(dian)(dian)池(chi)的容(rong)量下(xia)降，壽命(ming)也隨之減短。

以看(kan)出，當環境(jing)溫度從25°C上升到(dao)43°C時，閥控鉛蓄電(dian)池(chi)的浮充壽(shou)命將從20年下降到(dao)5年。因此，為(wei)了延(yan)長壽(shou)命，閥控鉛蓄電(dian)池(chi)應當安裝在有空(kong)調的房間(jian)內。此外(wai)，安裝時，各單體電(dian)池(chi)之間(jian)應留空(kong)隙，避免太(tai)陽照射(she)，遠離(li)開關(guan)整流(liu)器等(deng)熱源(yuan)，采用多(duo)層(ceng)安裝時，層(ceng)數不(bu)要太(tai)多(duo)。