Lithium Phosphate Battery Pack for Communication
Lithium iron phosphate battery such as small volume, light weight, high temperature performance is good wait for a characteristic, has gradually replaced traditional lead-acid battery, become a communications industry widely used a new type of battery. Based on a large telecommunication operators, for example, aimed at the difficulty in the lead-acid battery is in use and maintenance, puts forward the lithium iron phosphate batteries in the construction of communication network for different scenarios, and analyzes its advantage in different application scenarios, provide help for the selection of backup battery for communication operators.Performance advantages
At present, the telecommunication operators use a lot of valve control type sealed lead acid battery, after decades of construction and operation maintenance, mainly to solve the problems of the following:
A) of low energy weight ratio and volume ratio, battery weight is heavy, covers an area of big, to floor load-bearing and room area, high demand for rooms bring greater difficulties, the location of the base station.
B) high temperature requirements in the running environment. Valve control type sealed lead acid battery can be normal working temperature range is narrow, generally at 25 ℃ or so, for the average base station will therefore increase the running energy consumption of air conditioning. For the environment is relatively poor base station, repeater stations and other outdoor integration due to the large range of temperature change, the service life of valve control type sealed lead acid battery can shorten greatly.
C) to charge and discharge efficiency is low. With the increase of charge and discharge frequency, charge and discharge efficiency will gradually decline.
D) valve control type sealed lead acid battery service life is shorter, the base station in general use fixed number of year is about 3 ~ 5 years.
E) lead-acid battery pollution to the environment. Extensive use of lead in lead-acid battery, and lead is a heavy metal, can cause harm to human body and environment.
Therefore, looking for new energy equipment application becomes the focus in the field of communications. Lithium iron phosphate batteries and the main performance comparison valve control type lead acid storage battery, lithium iron phosphate battery volume and weight with only about a third of valve control type lead acid storage battery capacity, for the computer 18650 battery packroom, site selection of base station has brought great convenience. At the same time, the lithium iron phosphate battery discharge ratio characteristics significantly better than that of lead-acid batteries. Within 1 c discharge of the lithium iron phosphate batteries have little impact, and lead acid battery 1 c discharge capacity only about 50%. In addition, the lithium iron phosphate battery wide working temperature range, high temperature have little impact on battery life, within the scope of the 20 ~ 75 ℃, its discharge characteristics, almost not influenced by high temperature. Applied to the base station can increase the temperature of the air conditioning or turn off air conditioning, by reducing the air conditioning energy consumption to achieve the effect of energy saving.
In addition, the lithium iron phosphate battery charge and discharge cycles is about valve control type lead acid battery 2 ~ 3 times, has excellent economic benefit. Lithium iron phosphate batteries because do not contain any heavy metals and rare metals, are in the process of production and the use does not produce pollution, which is its instead of valve control type lead acid storage battery used in the communications industry an important advantage.
According to the technical characteristics of the lithium iron phosphate battery, based on a large telecommunication operators of backup battery using the environment, for example, is recommended in the following scenario application and popularization of lithium iron phosphate batteries.
1) grid quality is bad, frequent blackouts base station due to the lithium iron phosphate battery charge-discharge cycles, service life is longer, especially suitable for mains quality is poorer, charge and discharge frequently base station.
2) central room area more tension and low bearing performance of acer station due to the lithium iron phosphate battery small volume, light weight, the base station with the battery generally no longer bearing reinforcement, houses can meet the basic requirements, room area is relatively nervous acer station to the city centre, site selection can greatly reduce the difficulty.
3) the integration of outdoor base station
Due to the mobile company is the newly built station rental room more and more difficult, a large number of base stations, base station began to gradually adopt outdoor integration placed on the roof or clearing, solved the difficult problem of rental room. The high temperature of the lithium iron phosphate battery charge and discharge characteristics, general guarantee without air conditioning, meet ventilation conditions, and the life not because of the high temperature and wreck, very suitable for outdoor integration base station.
4) indoor power distribution of the base wall
Due to the lithium iron phosphate battery small volume, light weight, can be used as a backup battery wall hanging switch power supply, improve the safety and reliability of the wall to hang the power.
