-Why don't lithium ion batteries be used for UPS backup power supply?

Why don't lithium ion batteries be used for UPS backup power supply?
author:enerbyte source:本站 click497 Release date: 2023-02-15 10:18:16
abstract:
Because lithium-ion batteries and lead-acid batteries have different characteristics, different charging curves and circuits, and different charging equipment are different according to different specifications of UPS batteries of different brands, it is almost impossible to replace lead-acid...

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Because lithium-ion batteries and lead-acid batteries have different characteristics, different charging curves and circuits, and different charging equipment are different according to different specifications of UPS batteries of different brands, it is almost impossible to replace lead-acid batteries with lithium batteries when the old UPS application clients replace batteries every year.

The more difficult point is that the lead-acid battery has a standard 12V voltage, a capacitance from 7AH to 70AH, and the power demand of the machine room is from 100AH to 500AH or higher. The lead-acid battery is stacked in series and parallel according to the demand, but the lithium-ion battery pack has a protection board bMS to control overcharge and discharge. Therefore, if the current lithium-ion battery is stored in a unit (assuming 48V, 30AH) with one voltage and capacity in the lead-acid battery mode, and then stacked in parallel according to the power demand of each machine room, it will occur between each battery pack bMS, because each battery pack has different stored voltage and capacity, which will cause protection during charging or discharging and cannot be used.

If a single UPS battery pack is made according to the customer's practical needs, it will usually be hundreds of AH due to the machine room demand, and a battery pack will also have more than 100kg. Especially for mobile phone communication machine rooms scattered all over Taiwan, the installation is very inconvenient, and the more serious is that the needs of each customer vary greatly. If the manufacturer of UPS power battery cannot standardize the mass production, each battery needs to be customized, The relative cost and price will be prohibitive. This is the major reason why UPS power supply manufacturers who have seen all major brands at home and abroad have no lithium ion battery products on UPS batteries.

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