The reason why lithium-ion battery cannot be used in UPS power supply

The lithium-ion battery has many advantages, but it can't be used on the UPS power supply.

Uninterruptible power supply (UPS) system has been the computer power equipment is very important, and UPS The battery So far there have been no changes to the lead-acid battery. However, lead-acid battery production process and the subsequent recovery of the pollution caused by the all clear, lead-acid batteries, poor storage efficiency and memory effect, temperature effect is big, big volume, heavy weight, can't have accurate power estimation, short life need to often change, etc...Problems, engineering technical personnel all know and become accustomed to, because there is no alternative.

Lithium electricity Core this decade has developed rapidly, volume density and capacity than to have very significant progress, the most important thing is that the cost price as mass production has dropped many, lithium battery, small volume, light weight, long life, can accurate estimation of power, no pollution, etc...A variety of factors, we have heard. But now no matter old UPS using the client or the existing UPS supplier, haven't any manufacturer of lead-acid battery replacement into lithium electricity product, on this point, a lot of technical personnel are mostly don't know why.

General vendor difficult change cost design threshold high lithium electricity

As lithium electricity, unlike lead-acid battery characteristics, charging curve and circuit, charging equipment with different brand UPS specifications are different, so the old UPS using the client when replace the battery every year, will be directly replace lead-acid battery to lithium electricity, it is almost impossible task. More difficult points, the specifications of the lead-acid battery 12 v voltage, electric capacity from 7 ah to 70 ah, computer room power demand from 100 ah??To 500 ah or higher demand, lead-acid batteries are on-demand series-parallel stack, however Lithium battery pack Have a control over charge to put the protection plate (Battery Management System BMS).So if now by way of lead-acid batteries, lithium battery with a voltage and capacitance save a unit (hypothesis is 48 v, 30 ah) then parallel stack, according to each room's electricity demand will occur between each battery BMS, because each battery existing voltage and power is different, when charging or discharging protection, cannot use.

If make a single battery pack by customer's requirement, the machine room will demand hundreds of AH (although the lithium-ion battery has only 1/3 volume weight ratio as lead-acid battery), and a battery pack will have more than 100 kg. It is very difficult for telecommunication room scattered all over the world to install. What’s more, different customer has different demand. If the UPS manufacturers cannot be standardized production, every cell needs customization, it will cost a lot. This is why manufacturers of UPS power supply all over the world will not use lithium-ion battery in UPS.

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