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                                                                                                                                                                                                                                                                                                                                影響UPS電池使用壽命的因素

                                                                                                                                                                                                                                                                                                                                2017-12-12   |  來源:煒業通科技

                                                                                                                                                                                                                                                                                                                                目前UPS使用的電池基本上為免維護鉛酸蓄電池,其浮充使用設計壽命一般可達7~15年,鉛酸蓄電池的使用壽命與放電次數、放電深度、工作溫度、浮充電壓及放電電流有著直接的關系。
                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                  (1)放電深度與放電次數
                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                  鉛蓄電池反復地大量放出蓄電池電量(深放電)將縮短電池壽命,壽命與放電深度和放電次數的關系可以用圖1表示。
                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                  (2)工作溫度
                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                  蓄電池浮充使用時的充電電壓與環境溫度有關,當溫度升高時,充電電壓應降低,以防止造成過充電;當環境溫度降低時,充電電壓應提高,以防止充電不足,溫度與充電電壓的關系曲線可以用圖2表示。工作溫度對電池的容量影響較大,隨著環境溫度的降低容量減小。環境溫度變化1℃時的電池容量變化稱為容量的溫度系數,溫度與容量的關系曲線可以用圖3表示。
                                                                                                                                                                                                                                                                                                                                  


                                                                                                                                                                                                                                                                                                                                  (3)放電電流
                                                                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                  為了延長蓄電池的使用壽命,蓄電池的放電終止電壓與放電電流應嚴格控制,以免產生過放電,放電后應立即進行補充電,以利于延長蓄電池的使用壽命。表2為在不同放電電流時推薦的放電終止電壓值。
                                                                                                                                                                                                                                                                                                                                  

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