電池計算公式

1、估算法1 計算蓄電池的最大放電電流值：I最大=Pcos巾/（n*E臨界*N）注：P T UPS 電源的標稱輸出功率cos TUPS 電源的輸出功率因數(shù)nTUPS 逆變器的效率E 臨界T蓄電池組的臨界放電電壓（12V 電池約為 10.5V ,2V 電池約為 1.75V ）NT每組電池的數(shù)量2、 根據(jù)所選的蓄電池組的后備時間，查出所需的電池組的放電速率值C,然后根據(jù)：電池組的標稱容量=I最大/C計算出電池的標稱容量。3、由于使用 E 臨界一一電池的最低臨界放電電壓值，所以會導致所要求的電池組的標稱容量偏大的局面。按目前的使用經(jīng)驗，實際電池組的實際容量可按下面公式計算：實際電池容量（AH =電池組的

2、標稱容量*0.754、時間與放電速率 C 表:510152030601.5h2h3.5C2.4C1.98C1.49C0.92C0.61C0.5C0.42C3h4h5h6h7h8h9h10h0.29C0.19C0.17C0.15C0.13C0.12C0.11C0.09C5、修正 UPS 系統(tǒng)實際電池容量計算方法:實際電池容量（AH）=功率*功率因數(shù)*0.75/ UPS 逆變器的效率/蓄電池組的臨界放電電 壓/每組電池的數(shù)量/放電速率例如:本方案 UPS 系統(tǒng)后備時間所需電池容量計算：3KVA UPS 系統(tǒng)單機滿負載后備時間為8 小時。注:功率=3KVA 功率因數(shù)=0.8 ; UPS 逆變器的效率

3、=0.9 ;蓄電池組的臨界放電電壓 =10.5 ;每組電池的數(shù)量=4; 8 小時放電速率=0.12C;本方案 3KVAUPS 滿載延時 8 小時所需電池容量 =3000X0.8 0.75 弋.9 出 0.5 嗚弋.12 P9 6.83AH綜合上述計算，本方案配置的實際電池容量選定為400AH 即 4 組共計 16 節(jié) 12V100AH電池。1、恒功率法采用恒功率法(查表法)這種方法比較簡便， 根據(jù)蓄電池恒功率放電參數(shù)可以快速準確 地選出蓄電池的型號。該方法是能量守恒定律的體現(xiàn)，蓄電池提供的功等于后者稍大于負荷消耗功。即：W 負荷 w K*Pnc , P 負荷 w P(W)首先計算在后備時間內(nèi)，

4、每個2v 單體電池至少應向 UPS 提供的功率 Pnc。計算公式：已知 P (W =P (VA) *Pf/ n； Pnc=P ( W / ( N*n*K)所以：Pnc=P (VA) *Pf/ (n *N*n*K )公式說明：P(W)電池組提供的總功率P(VA)UPS標稱容量(VA)PfUPS 功率因子n逆變器轉換效率Pnc每 cell 需要提供的功率n機器配置的電池數(shù)量N單體電池 cell 數(shù)Vmi n電池單體終止電壓K電池并聯(lián)組數(shù)我們可以在電池廠家提供的Vmin 下的恒功率放電參數(shù)表中，找出等于或者稍大于Pnc的功率值，這一功率值所對應的型號即能夠滿足UPS 系統(tǒng)的要求。如果表中所列的功率值

5、均小于 Pnc.可以通過多組電池并聯(lián)的方式達到要求。本項目所選用的電池，按照招標要求，采用閥控式密封免維護鉛酸蓄電池。參數(shù)表如下：Hl也摩號轉止電用i袖15單性成吐墳電30 川豁W)啾砂456023啊4電時RJ何*6 H)81020GM1W(SVTODAHj1 85V149.512S.11M.9&5.958M.S3627.222219W.11 60V190 6las.112911WJ64793723323 21041.75V213149.512097 5644AJ53S929.523.72021061.TOV232 2161$1277102.96?S50.640,430.524 520.7w.

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