Introduction to the advantages, disadvantages and performance of lithium iron phosphate batteries

Lithium iron phosphate battery has a long life, with a cycle life of more than 2000 times. Under the same conditions, the lithium iron phosphate battery can be used for 7 to 8 years; it is safe to use. Lithium iron phosphate batteries have undergone strict safety tests and will not explode even in traffic accidents; charging is fast. Using a special charger, the battery can be fully charged in 40 minutes at 1.5C; the lithium iron phosphate battery is resistant to high temperatures, and the hot air value of the lithium iron phosphate battery can reach 350 to 500 degrees Celsius; the lithium iron phosphate battery has a large capacity; there is no memory effect ; Green and environmentally friendly, with a wide range of raw materials and low prices. The disadvantage of lithium iron phosphate batteries is that the tap density of the positive electrode of the battery is small, and the density is generally about 0.8 to 1.3. Large size; poor electrical conductivity, slow diffusion of lithium ions, low actual specific capacity during high charge and discharge; poor low-temperature performance of the battery; battery life of a single battery is about 2000 times, but the lithium iron phosphate battery pack The life span is short, generally around 500 times. 1. Extremely strong safety performance The P-O bond in the lithium iron phosphate crystal is stable and difficult to differentiate. Even if the battery is damaged internally or externally, the battery does not burn or explode, and has the best safety. 2. Light weight, the volume of the lithium iron phosphate battery of the same specification and capacity is 3/5 of the volume of the lead-acid battery, and the weight is 4/7 of the lead-acid battery. 3. The ultra-long service life of the lithium iron phosphate battery refers to the use of Lithium iron phosphate is used as a positive electrode material for lithium-ion batteries. The cycle life of an ordinary lead-acid battery is around 300 times, and the highest is 500 times, while the lithium iron phosphate power lithium battery has a cycle life of more than 2000 times. Ordinary lead-acid batteries are new for half a year, old for half a year, and for maintenance and maintenance for half a year, at most 1 to 1.5 years, while lithium iron phosphate batteries have a life span of 7 to 8 years when used under the same conditions. Comprehensive consideration, the cost performance is more than 4 times that of lead-acid batteries. High current 2C can be charged and discharged quickly. With a dedicated charger, the battery can be fully charged within 40 minutes at 1.5C. The starting current can reach 2C, but lead-acid batteries have no such performance. After 500 cycles, its discharge capacity is still greater than 98%; excellent cycle life, 4. Good high-temperature performance Lithium iron phosphate has a wide operating temperature range (-20℃--+80℃), and good performance at high temperatures: external temperature 65 The internal temperature is as high as 95℃ at ℃, and the temperature can reach 160℃ when the battery is discharged. The layout of the battery is safe and intact; the peak value of lithium iron phosphate electric heating can reach 350℃-500℃. 5. Large-capacity, large-rate has a larger capacity than ordinary batteries (lead-acid, etc.). The monomer capacity is 5AH-1000AH. High-efficiency output: standard discharge is 2～5C, continuous high current discharge can reach 10C, instant pulse discharge (10S) can reach 20C; 6. Rechargeable batteries without memory effect often work under the condition of being fully charged and not discharged, and the capacity will be Rapidly falling below the rated capacity value, this phenomenon is called the memory effect. Like lead-acid batteries, nickel-metal hydride, and nickel-cadmium batteries, there is memory, but lithium iron phosphate batteries do not have this phenomenon. No matter what state the battery is in, it can be charged and used at any time without having to discharge it before charging. 7. The environmental protection lithium iron phosphate battery does not contain any heavy metals and rare metals, is non-toxic (SGS certified), non-polluting, in line with European RoHS regulations, and is an absolute green environmental battery certificate. The reason why lithium iron phosphate lithium-ion batteries are favored by the industry is important for environmental protection considerations. Therefore, the battery has been included in the 863 National High-Tech Growth Plan during the Tenth Five-Year Plan and has become a key national support and encouragement project for growth. 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