Analysis of integrated lithium iron phosphate battery applied in outdoor station

Source: 2020 - 04 - And 10 hits: integrated lithium iron phosphate battery outside station after several years of development, the application of lithium iron phosphate battery application in the communications industry has shifted away from the pilot phase has entered the phase of small-scale applications. Compared with lead-acid batteries, lithium iron phosphate batteries in the cycle of life, operating temperature, weight ratio and volume ratio can be performance advantages are well known. In this paper, the region's existing core lithium battery network application scenario, installation construction, the problem such as parameter Settings are analyzed and discussed. A, the classification of lithium iron phosphate batteries according to the number of single cell battery, 15 and 16 battery pack. Because of its good properties at low temperature, China mobile communications group co. , LTD. Hangzhou branch of zhejiang with 16 batteries. This paper takes 16 series of lithium iron batteries as the research object. From the point of application of classification, the lithium iron phosphate batteries are divided into integration and separation of battery; According to the different combination of battery and battery management system, the credit of China's mobile communication base station of lithium iron phosphate battery enterprise standard ( qb - h - 005 - 2012). Mainly divided into three models. ( 1) IBS model: 16 pieces of small capacity battery series integrated battery pack, lithium iron phosphate battery management system in the same equipment. ( 2) LBMS mode: by 16 pieces of large capacity lithium iron phosphate battery series, battery management system. Battery management system can be installed independently, can also be installed in the switch power supply system of single battery. ( 3) LBAM mode: is a separate battery pack, by 16 large capacity lithium iron phosphate battery series, battery acquisition module. Battery protection and alarm functions performed by switching power supply system. At present, the IBS model in zhejiang province has been applied to batch, after two models only in scattered pilot stage. The author thinks that the latter two patterns still didn't get the promotion, is mainly due to the high price, and there is no single lithium iron phosphate batteries and single lithium iron phosphate battery industry standards. The application of the outdoor station currently IBS type lithium iron phosphate battery technology is relatively mature, routine use of a single battery capacity of 10 30 ah ah, ah, 20, 50 ah, is the alternative and complementary lead-acid batteries. According to the lithium iron batteries, high temperature resistance, high discharge rate, the characteristics of distribution, wireless local area network (LAN) is mainly used in indoor, outdoor cabinet stand bad environment, etc. Among them, the outdoor cabinet sites each year due to environment temperature difference is big, especially the summer high temperature, frequency and other reasons, the site network backup power protection is serious, the high cost. The area of outdoor cabinet is ventilated, or heat. In the summer, the temperature of the high-temperature battery box up to 55 ℃. At the end of 2012, the qiantang river travel company integration of outdoor base station to 150 Ah lithium iron phosphate battery for the pilot, replaced the original 200 Ah lead-acid batteries, after two years of testing, the lithium iron phosphate battery performance is still good. According to this year ShengJia estimates, 150 ah lithium iron batteries price is 11400 yuan, 200 ah lead-acid battery brand 5040 yuan/group. But lithium iron battery warranty for six years, six years to replace 3 sets of lead-acid batteries cost a total of 15120 yuan, which does not consider replacement and logistics costs. In addition, the outdoor station of lead-acid battery is very high, because of lithium iron batteries are emerging products, external recognition rate is very low, and there is no distribution channels, so the theft rate is very low. Medium to long term, the outdoor station using the integration of the lithium iron phosphate batteries can reduce costs, improve efficiency. Through communication and other areas in a similar situation in the province, visible outdoor stands for lead-acid batteries with lithium iron phosphate batteries are particularly urgent.