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適用華為UPS2000-G-15KRTL-01機(jī)架式UPS不間斷電源15KVA 13.5KW

庫(kù)房實(shí)拍：

一、UPS為什么不宜并聯(lián)？

在同樣大小的充電電壓情況下，兩組并聯(lián)使用的電池組，其每一組所得到的充電電流是不一樣的，內(nèi)阻大的其充電電流小，內(nèi)阻小的其充電電流大。這樣，就有可能造成充電電流小的那組電池經(jīng)常處于充電不足的狀態(tài)，久而久之，這組電池可能因長(zhǎng)期虧電而硫酸鹽化更加加大其內(nèi)阻，其內(nèi)阻越大，充電電流更小，由于造成了這樣一個(gè)惡性循環(huán)而導(dǎo)致這組電池的使用壽命大大縮短。而只用一組電池就不存在這種情況。

因此，建議用戶(hù)在能夠用一組電池就可以滿(mǎn)足設(shè)備的需要情況下，不要用兩組電池并聯(lián)使用，否則既會(huì)縮短電池的使用壽命，增加使用 ，又會(huì)降低電池的綜合性能。

當(dāng)然，設(shè)計(jì)者和使用者從提高備用電源供電的可靠性這一點(diǎn)來(lái)考慮也是可以理解的，怕萬(wàn)一交流電停電時(shí)，兩組電池中有一組不能供電時(shí)還可以有另外一組電池來(lái) ，即使是干一點(diǎn)勞民傷財(cái)?shù)氖乱仓�。假若是從這一角度出發(fā)而考慮采用電池組并聯(lián)使用，也只贊成較多用兩組電池并聯(lián)，若2組以上并聯(lián)那是有害無(wú)益之舉。假若非采用2組電池并聯(lián)不可的情況下，請(qǐng)大家也應(yīng)同時(shí)遵循以下原則。

1、 Why is UPS not suitable for parallel connection?

Under the same charging voltage, the charging current obtained by each group of two battery packs used in parallel is different. Those with high internal resistance have lower charging current, while those with low internal resistance have higher charging current. In this way, it is possible to cause the group of batteries with low charging current to often be in a state of insufficient charging. Over time, this group of batteries may experience long-term power loss and sulfation, which further increases their internal resistance. The larger the internal resistance, the lower the charging current. As a result of this vicious cycle, the service life of this group of batteries is greatly shortened. And this situation does not exist with just one set of batteries.

Therefore, it is recommended that users do not use two sets of batteries in parallel when only one set of batteries can meet the needs of the device. Otherwise, it will not only shorten the battery&＃39;s service life, increase usage costs, but also reduce the overall performance of the battery.

Of course, it is understandable for designers and users to consider improving the reliability of backup power supply, fearing that in the event of an AC power outage, if one of the two sets of batteries cannot supply power, another set of batteries can be used to ensure it, even if it is a bit of labor and financial harm. If we consider using battery packs in parallel from this perspective, we only support using more than two sets of batteries in parallel. If two or more sets of batteries are connected in parallel, it would be harmful and unhelpful. If it is not possible to use two sets of batteries in parallel, everyone should also follow the following principles.