This is an era of data explosion. Clouds and pipelines carry data and bring people into the era of big data. The main equipment continues to evolve, and the network energy equipment also develops rapidly, and the backup power supply that guarantees the uninterrupted power supply of the communication equipment also needs to speed up the pace to contribute to the big data era.
Lead-acid battery technology is finalized, it is difficult to solve pollution, low life, low energy density
Lead-acid batteries have been developed for more than 150 years. Because of their low cost, mature technology, and convenient maintenance, they have always been the most widely used energy storage batteries in current communication power supplies. However, lead-acid batteries are subject to theoretical characteristics and Product characteristics, it is difficult to have an obvious improvement in the future.
First of all, the cycle of life is short. Even lead-acid batteries with relatively good cycle performance can only maintain a life of one year in areas with poor grid quality and frequent deep cycle use. In addition, the life of a lead-acid battery greatly depends on its operating temperature. When the temperature increases, the corrosion of the electrode plate and the loss of water will be accelerated, and the life of the battery will also become shorter.
The second is low energy density. Occupying a large area, heavyweight, and high requirements for floor load-bearing, these problems are becoming more and more prominent with the continuous increase of the data transmission volume of communication equipment.
is easy to be stolen again. Lead-acid batteries can be used in many situations after being stolen, and the lead content is high and easy to recycle. These are the reasons for the theft of lead-acid batteries.
Finally, there is an environmental issue. "Lead pollution mainly occurs in the manufacturing and recycling process of lead storage batteries. One of the processes is to melt the lead. The melting and recycling process is prone to pollution." said Perry Gottesfeld, president of the International Association of Professional Knowledge. In fact, for the lead-acid battery industry, the recycling process is more likely to cause pollution than the production process.
Therefore, there is an urgent need for energy storage with excellent performance and low overall cost to replace traditional lead-acid batteries. At this time, lithium-ion batteries have come into people’s sight.
Lithium-ion batteries have suddenly emerged, with great potential and stepped into the backup power supply
Lithium-ion batteries did not appear in recent years. They have been commercialized in the field of mobile phones for more than 20 years. However, lithium-ion batteries are a new force in the field of communication sites as a backup power source. At this stage, most of the lithium batteries used in the field of communication backup power are lithium iron phosphate batteries, and a small part are ternary lithium batteries.
Considering environmental protection, lithium batteries have natural advantages. The materials used in lithium batteries do not contain polluting metals, such as cadmium, lead, mercury and other harmful heavy metal substances. There are no pollutants generated during the production and use of lithium batteries, which protects the health of the human body. During the recycling process of waste batteries Will not bring water and soil pollution.
In terms of electrical performance, lithium batteries have surpassed lead-acid batteries in an all-round way. The cycle life, high temperature characteristics, charge-discharge rate performance and energy density of lithium batteries are all excellent, far superior to lead-acid batteries. For example, the volume and weight of lithium batteries with the same capacity are one-half to one-third of lead-acid batteries, and they can be connected and placed arbitrarily. There are no special requirements for building space, load-bearing, etc., which greatly reduces the cost of venue rental. . In addition, the excellent high temperature characteristics of lithium batteries can reduce the air conditioning configuration and power consumption of the base station. After the lithium battery is stolen, the recycling value is of little value. Due to the existence of the battery management system, it cannot be used directly, which reduces the risk of theft of the backup power supply.
is the same lithium ion battery, the characteristics of the ternary lithium battery and the lithium iron phosphate battery are somewhat different. The cycle of ternary lithium battery
The ring life is between the lead-acid battery and the lithium iron phosphate battery, but the floating charge life is much better than that of the lithium iron phosphate battery. The energy density is more than 50% higher than that of the lithium iron phosphate battery, and the cost is also higher than that of the lithium iron phosphate battery. low. The flexible choice of lithium iron phosphate batteries and ternary lithium batteries will make the lithium battery backup power supply more widely used in the communications industry.
At present, the one-time cost of lithium batteries is still high, but in terms of total cost of ownership (TCO), lithium batteries are not higher than lead-acid batteries. Although the price is two to four times higher than that of ordinary lead-acid batteries, the TCO during the life cycle of lithium batteries is even lower than that of lead-acid batteries due to the advantages of long life and low maintenance and replacement costs. In the future, with the development of electric vehicles and energy storage industries, the application of lithium batteries will continue to scale, the prices will become lower and lower, and they will become more and more competitive.
