What are the advantages of using lithium iron batteries in base stations?

Comparison of base station application methods and investment comparison. Application of lithium iron phosphate batteries and lead-acid batteries in base stations. Base stations use lithium iron phosphate batteries and lead-acid batteries. It is important to consider that different discharge rates have little effect on the discharge capacity of the battery and can withstand a large range The ambient temperature. The following will select and analyze the battery capacity based on the base station power consumption and backup time. Base stations can be divided into the following two categories: (1) The power of macro base stations and indoor power distribution stations GSM Acer base stations can be calculated according to 3.5a/carrier frequency, divided into 46A townships (4/4/4), 130A urban areas (12/ 12/12) and 160A ultra-dense urban areas (15/15/15). The power of TDacer station is divided into single frequency band (including 1 BBU and 3 RRU) 1200W25A and dual frequency (including 1 BBU and 6 RRU) 2100W44A, including 1 BBU300W and 1 RRU300W. The power of the indoor distributed power station is divided into single frequency band (1 BBU and 5 RRU) 1000W21A, dual frequency (1 BBU and 10 RRU) 1400W29A, and three frequency band (1 BBU and 15 RRU). 2100W44A, including 1 BBU600W and 1 RRUSOW. The battery reserve time of Acer station and indoor distributed power station is 3 hours in urban areas, 5 hours in rural areas, and 7 hours in mountainous areas. (2) Indoor RRU distribution Indoor RRU distribution can include one or more RRUs. The power consumption of a single RRU is 80w1.67a, and the battery reserve time is 4 hours. According to calculations, the configuration of lead-acid batteries is as follows: Lithium iron phosphate batteries and lead-acid batteries are used in base stations. The product types of lithium iron phosphate batteries are limited, and mature models are 50Ah, 100Ah, 150Ah, and 200Ah. Take 48V/50A communication load running for 5 hours as an example to make model selection and investment comparison. The constant current discharge data of lithium iron phosphate batteries are shown in the following table: The constant current discharge data of lithium iron phosphate batteries The use of lithium iron batteries in base stations has the following advantages: 1. Small capacity: the discharge capacity of lithium iron batteries is not as affected by lead-acid batteries. Due to the influence of different discharge rates, a battery with a smaller capacity can be selected to meet the power demand of the same communication load. 2. Good high temperature performance: The existing base station air conditioner is set at 28°C. If the temperature rises to 35°C, the lead-acid battery should be equipped with a separate incubator. The lithium iron phosphate battery can withstand a high temperature of 55°C, and its life is not affected. The base station temperature value can be directly set to achieve energy saving and emission reduction. 3. Small size and light weight: 3.2v/200Ah lithium iron battery size (length * width * height) 360*55*250, weight 8.1kg; lithium iron battery size (length * width * height) 360*55*306, Weight 9.6 kg; 2V/300Ah lead-acid battery size (length * width * height) 124*181*365, weight 19kg. The 48V/200Ah lead-acid battery pack is installed in the same way as the 48V/300Ah lead-acid battery pack, with an area of u200bu200b59% and a weight of 28% of the 48V/300Ah lead-acid battery pack. If considering that under the same load-carrying conditions of the machine room, lithium-iron batteries can be installed in double and double rows, while lead-acid batteries should be installed in single and double rows, the former occupies 29% of the area of u200bu200bthe latter. With the same 48V/300Ah lithium-iron battery pack and lead-acid battery pack, under the same installation method, the former occupies 59% of the area of u200bu200bthe latter and 34% of the weight of the latter. 4. Long cycle life: Lithium iron phosphate battery has more cycle life, especially suitable for four types of power outage base stations. 5. Unit investment: 1 48V/300Ah lead-acid battery, the price is about 8,640 yuan (collection price is 1.2 yuan)/2v. Ah), a set of 48V/200Ah lithium iron batteries cost about 25,600 yuan (market price: 8 yuan) / 3.2 watts. H), the price of a set of battery incubators is about 100 million yuan, and the price of a set of lithium iron batteries (without incubator) is 1.37 times that of a set of lead-acid batteries (with incubator). When the price of lithium iron phosphate battery drops to 6 yuan/3.2vai. In addition, the reduction of the area and weight of the computer room can reduce the construction cost of the computer room, the better cycle life of the iron-lithium battery can extend the battery replacement cycle, and the high temperature performance can save the power consumption of the air conditioner. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of lithium battery energy density and size specifications