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Discussion: Can you talk about lithium-ion batteries used in UPS power supply? In the field of UPS uninterruptible power supply, the configuration of UPS energy storage power supply has a significant impact on its service life and performance.

In the history of UPS power supply usage, lead-acid batteries have been used as its energy storage power for a long time, but in recent years, with the development of lithium-ion batteries. The energy storage power supply configured by UPS is no longer limited to the use of lead-acid batteries, and lithium-ion batteries have become an energy storage power supply configuration option for many manufacturers when making UPS power supplies.

Why can lithium-ion batteries, as an energy storage power configuration for UPS, develop rapidly and even compete with lead-acid batteries that have gradually matured and been used for a long time, and even have a faint trend of surpassing?

The important reason for this is closely related to the performance characteristics of lithium-ion batteries themselves. Compared with lead-acid UPS, lithium-ion battery UPS has significant advantages in terms of service life, energy ratio, safety performance, etc. In addition to cost, it has a significant disadvantage compared to lead-acid batteries. In other aspects, lithium-ion batteries mostly have a higher performance index than lead-acid batteries.

The advantages of lithium-ion batteries as UPS energy storage power sources

High energy density

Compared to other batteries, lithium-ion batteries have a high energy density, currently reaching 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries. This means that at the same charge capacity, lithium-ion batteries are lighter in weight. According to calculations, the weight of lead-acid products under the same volume is approximately 1/5 to 1/6 of that of lead-acid products.

No memory effect

lithium-ion batteries have no memory effect, which means they do not need to charge at a fixed level like cadmium nickel batteries. They can be charged according to their actual needs, providing users with a more efficient and convenient user experience.

Strong temperature adaptability

The working temperature of lithium-ion batteries is usually between -20 ℃ and 60 ℃, but some specially customized lithium-ion batteries have stronger adaptability to temperature, and some can even operate normally in environments of hundreds of degrees Celsius.

Environmental protection of composition materials

The positive electrode materials for lithium-ion batteries are commonly LixCoO2, LixNiO2, and LixMnO4. The electrolyte uses LiPF6+ethylene carbonate (EC)+dimethyl carbonate (DMC).

Petroleum coke and graphite are non-toxic and have sufficient resources as negative electrode materials. Lithium ions are embedded in carbon, overcoming the high activity of lithium and effectively solving the safety issues of traditional lithium-ion batteries. The positive electrode LixCoO2 can achieve high levels of charging and discharging performance and lifespan, reducing costs and improving the comprehensive performance of lithium-ion batteries.

Compared to materials such as sulfuric acid solution, lead and its oxides in lead-acid batteries, the composition materials of lithium-ion batteries provide great protection for the environmental protection and safety of users and the surrounding environment.

lithium-ion batteries have many advantages as energy storage power sources for UPS, and compared to lead-acid batteries, they also have higher usage efficiency. Therefore, nowadays, there are more and more UPS power sources such as lithium-ion battery UPS. When users choose UPS power sources, they also favor lithium-ion battery UPS.

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