Advantages of using lithium battery UPS as a power management system. Lithium battery UPS is a new type of lithium battery energy storage power supply. Compared with traditional UPS lead-acid batteries, it has advantages such as being environmentally friendly, safe, having a long service life, high temperature resistance, and no memory effect. Battery-powered UPS management systems using lithium batteries are increasingly being adopted by customers. So, what are the advantages of a lithium battery UPS management system? Let's explore together.
I. Advantages of using lithium battery UPS as a power supply management system
Currently, for UPS battery-powered systems, the initial capital expenditure for lithium-ion batteries is only 1.4 times that of lead-acid batteries, but the total cost of ownership (TCO) over 10 years can be reduced by 10%-30%. The advantages are as follows:
① Lightweight
Lithium-ion batteries are about one-third lighter than lead-acid batteries. This can save on data center construction costs because there's no need to reinforce the floor to support the increased weight. It also saves on transportation costs, as more lithium-ion batteries can be transported at the same cost compared to lead-acid UPS batteries.
② Long lifespan
Lead-acid batteries have a cycle life of around 300 cycles. In contrast, lithium iron phosphate batteries, at room temperature and 1C charge/discharge, retain more than 80% capacity after 2000 cycles per cell, and their 3C cycle life exceeds 800 cycles.
③ Fast charging
Lithium battery UPS can be charged and discharged at a high current of 2C. With a dedicated charger, the battery can be fully charged in 40 minutes at 1.5C. The starting current can reach 2C, which lead-acid batteries do not currently have.
④ Higher energy density
Lithium-ion battery UPS systems have higher energy density (Wh/kg, or watt-hours per kilogram) and power density. Their energy density is 3 to 4 times that of lead-acid batteries, 2.5 times that of nickel-cadmium batteries, and 1.8 times that of nickel-metal hydride batteries.
⑤ High temperature resistance
Lithium battery packs can operate at temperatures up to 86°F (30°C), nearly 10°C higher than lead-acid batteries. Lithium iron phosphate battery UPS systems can achieve peak thermal values of 350~500°C and have a wide operating temperature range (-20~+75°C).
⑥ Reduce maintenance and lower costs
Lithium-ion batteries are equipped with a built-in battery management system (BMS), providing monitoring and maintenance functions such as automatic status monitoring, fault monitoring, battery balancing, power optimization, and external communication. Lithium-ion battery UPSs can reduce labor and maintenance costs and significantly reduce the risk of battery pack failure.
⑦ Environmentally friendly and pollution-free
Lithium iron phosphate batteries contain no heavy or rare metals, are non-toxic, and cause no pollution during production or use, complying with European RoHS regulations and making them green and environmentally friendly batteries. Lead-acid batteries, on the other hand, contain large amounts of lead, and improper disposal after disposal can cause secondary pollution to the environment.
⑧ Memoryless effect
Lithium iron phosphate battery packs can be charged and used immediately regardless of their condition, without needing to be fully discharged before recharging.
II. Case Studies of UPS Lithium Batteries in Banking Systems:
The company conducted design, research and development, construction, operation and maintenance of a large-capacity UPS lithium battery energy storage system at the Bank of Communications Caohejing Disaster Recovery Center, marking the first step in combining banking big data with lithium battery energy storage technology. In July 2016, the complete lithium battery UPS energy storage system was officially completed at the Caohejing Data Center and successfully connected to the grid on the first attempt, officially entering the demonstration application stage. After six months of grid-connected operation, Aerospace Power and the user jointly conducted on-site actual discharge tests, and all system performance targets were met.
The successful application of lithium battery UPS energy storage systems is also an important practice for Aerospace Power to promote the development of the "four new economies" and transform from a "battery manufacturer" to a "power system solution provider and mainstream supplier of complete equipment." It is understood that if lithium battery energy storage systems are fully promoted and applied in the banking sector, the output value could reach several billion yuan, potentially becoming a new growth highlight.
III. Future Forecasts and Outlook for UPS Lithium Battery Management Systems
For large data centers, the savings from adopting UPS lithium battery systems can be substantial, leading to a gradual increase in lithium battery power systems in the enterprise sector. Lithium-ion chemistry continues to advance. New solutions and technologies will emerge over time, while the price of lithium batteries will further decrease.
The replacement of lead-acid batteries with lithium batteries is inevitable. In the long run, lithium battery UPS can save 10% or more. Currently, lithium batteries are being accepted by more companies in foreign countries to replace lead-acid batteries in UPS. In some countries (such as South Korea), the process of replacing lead-acid batteries with lithium batteries is very fast, with lithium batteries accounting for as much as 30%. There are even all-lithium battery UPS systems like Shinhan Bank.
In conclusion, adopting lithium battery UPS as a power management system will be a trend, and UPS power supplies with lithium batteries as energy storage have more advantages.
