电池计算公式

1、估算法1 计算蓄电池的最大放电电流值：I最大=Pcos巾/（n*E临界*N）注：P T UPS 电源的标称输出功率cos TUPS 电源的输出功率因数nTUPS 逆变器的效率E 临界T蓄电池组的临界放电电压（12V 电池约为 10.5V ,2V 电池约为 1.75V ）NT每组电池的数量2、 根据所选的蓄电池组的后备时间，查出所需的电池组的放电速率值C,然后根据：电池组的标称容量=I最大/C计算出电池的标称容量。3、由于使用 E 临界一一电池的最低临界放电电压值，所以会导致所要求的电池组的标称容量偏大的局面。按目前的使用经验，实际电池组的实际容量可按下面公式计算：实际电池容量（AH =电池组的

2、标称容量*0.754、时间与放电速率 C 表:510152030601.5h2h3.5C2.4C1.98C1.49C0.92C0.61C0.5C0.42C3h4h5h6h7h8h9h10h0.29C0.19C0.17C0.15C0.13C0.12C0.11C0.09C5、修正 UPS 系统实际电池容量计算方法:实际电池容量（AH）=功率*功率因数*0.75/ UPS 逆变器的效率/蓄电池组的临界放电电 压/每组电池的数量/放电速率例如:本方案 UPS 系统后备时间所需电池容量计算：3KVA UPS 系统单机满负载后备时间为8 小时。注:功率=3KVA 功率因数=0.8 ; UPS 逆变器的效率

3、=0.9 ;蓄电池组的临界放电电压 =10.5 ;每组电池的数量=4; 8 小时放电速率=0.12C;本方案 3KVAUPS 满载延时 8 小时所需电池容量 =3000X0.8 0.75 弋.9 出 0.5 呜弋.12 P9 6.83AH综合上述计算，本方案配置的实际电池容量选定为400AH 即 4 组共计 16 节 12V100AH电池。1、恒功率法采用恒功率法(查表法)这种方法比较简便， 根据蓄电池恒功率放电参数可以快速准确 地选出蓄电池的型号。该方法是能量守恒定律的体现，蓄电池提供的功等于后者稍大于负荷消耗功。即：W 负荷 w K*Pnc , P 负荷 w P(W)首先计算在后备时间内，

4、每个2v 单体电池至少应向 UPS 提供的功率 Pnc。计算公式：已知 P (W =P (VA) *Pf/ n； Pnc=P ( W / ( N*n*K)所以：Pnc=P (VA) *Pf/ (n *N*n*K )公式说明：P(W)电池组提供的总功率P(VA)UPS标称容量(VA)PfUPS 功率因子n逆变器转换效率Pnc每 cell 需要提供的功率n机器配置的电池数量N单体电池 cell 数Vmi n电池单体终止电压K电池并联组数我们可以在电池厂家提供的Vmin 下的恒功率放电参数表中，找出等于或者稍大于Pnc的功率值，这一功率值所对应的型号即能够满足UPS 系统的要求。如果表中所列的功率值

5、均小于 Pnc.可以通过多组电池并联的方式达到要求。本项目所选用的电池，按照招标要求，采用阀控式密封免维护铅酸蓄电池。参数表如下：Hl也摩号轉止电用i袖15单性成吐坟电30 川豁W)啾砂456023啊4电时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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