The advantages and disadvantages of lithium iron phosphate battery packs

Benefits of lithium iron phosphate battery pack (1) High rate discharge When the test temperature is 25℃ and the test voltage is 2.9～3.3V, the different rate discharge curve of lithium iron phosphate battery pack is shown in the figure, which can be seen from the figure. , Under the different test voltage and rate, the discharge capacity is close to 100% when the discharge voltage is close to 2.0V. (2) The weight energy density of the high energy density lithium ion battery is 150Wh/kg. Under the communication volume, the energy density of lithium-ion batteries is about 3 to 4 times that of lead-acid batteries. Compared with the lead-acid battery, the weight of the lithium iron phosphate battery pack with communication capacity is about 60% to 70% eliminated. (3) High cycle performance. Under normal circumstances, the charge-discharge cycle of an ordinary lead-acid battery is 300 to 500 times, and the charge-discharge cycle of a lithium-ion battery can be 1000 times higher. (4) It can be quickly charged. The energy conversion efficiency is high, and the charging can be completed within 1 to 3 hours, while ordinary lead-acid batteries cannot be charged so quickly. (5) High security. Because ordinary lead-acid batteries contain heavy metals such as lead and antimony, they are likely to cause serious pollution, and they are prone to leaks when used and maintained. If the internal sulfuric acid overflows, it will cause equipment corruption and personal injury. The lithium ion battery pack does not contain any heavy metal elements harmful to the human body, is pollution-free, and has high safety. It is the most safe lithium ion battery at present. (6) Low cost The life cycle of traditional 48V lead-acid batteries is generally 5 years, and the life cycle of telecommunication iron-lithium-ion battery packs can reach 10 years. In addition, the intelligent intermittent charging and discharging management mode of lithium iron phosphate battery recycling has greatly reduced the power consumption cost. Disadvantages of lithium iron phosphate battery pack ●Lithium iron phosphate battery also has its disadvantages: for example, the tap density of lithium iron phosphate cathode material is small, and the volume of lithium iron phosphate battery with equal capacity is larger than that of lithium cobalt oxide and other lithium ion batteries. , So there is no advantage in miniature batteries. ●The low-temperature performance of lithium iron phosphate batteries is poor. People try to improve the ion and electronic conductivity function through various methods, improve the low-temperature performance of lithium iron phosphate by improving the particle size of the primary or secondary particles and tracing to control the effective reverberation area, and by adding special conductive agents to add electronic conductivity, etc.) However, due to the inherent characteristics of lithium iron phosphate materials, its low temperature performance is inferior to other positive electrode materials such as lithium manganate. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How do you know the different power lithium-ion battery packs and capacity-type lithium-ion batteries?