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Lithium iron phosphate batteries, like lithium manganese oxide, cobalt oxide, and ternary lithium batteries, are branches of lithium-ion batteries. Its performance is mainly suitable for power applications. At this time, it is called lithium iron phosphate battery, also called lithium iron Battery. Therefore, the advantage of lithium iron phosphate battery mainly refers to its comparison with other batteries in power applications. In this sense, it will specifically compare its relative advantages with ternary lithium batteries and lead-acid batteries.
1. The advantages of high-temperature resistance compared with ternary lithium batteries. The high-temperature performance of lithium iron phosphate battery is better, and it can withstand high temperatures of 350°C~500°C, while lithium manganate/lithium cobaltate is usually only about 200°C. The modified ternary lithium battery will generally be decomposed at 200°C.
2. The "elder" among the two and three is the absolute advantage of long life. Lithium iron phosphate batteries have a longer cycle life than lead-acid batteries and ternary lithium batteries. The "long life" of lead-acid batteries is only about 300 times, up to 500 times; the ternary lithium battery theoretically can reach 2000 times, and the capacity of the ternary lithium battery will be reduced to 60% after about 1000 times. The actual life of lithium iron phosphate batteries That is, it reaches 2000 times, at this time, there is 95% of the capacity, and its conceptual cycle life gets more than 3000 times.
3. There are many advantages compared with lead-acid batteries:
Large capacity. The monomer can be made into 5Ah~1000Ah (1Ah=1000mAh), and the 2V monomer of lead-acid battery is usually 100Ah~150Ah, with a small variation range.
Lightweight. The volume of the lithium iron phosphate battery of the same capacity is 2/3 of the importance of the lead-acid battery, and the weight is 1/3 of the latter.
Strong, fast charging ability. The start-up current of lithium iron phosphate batteries can reach 2C, which can realize large-rate charging; the wind of lead-acid batteries is generally required to be between 0.1C and 0.2C, which cannot achieve fast charging performance.
Environmental protection. Lead-acid batteries contain many heavy metal-lead, which produce waste liquid. In contrast, lithium iron phosphate batteries do not have any heavy metals, and there is no pollution in production and use.
High-cost performance. Although lead-acid batteries are cheaper than lithium iron phosphate batteries because of their cheap materials, they are less economical than lithium iron phosphate batteries in terms of service life and routine maintenance. Practical application results show that the cost performance of lithium iron phosphate batteries is more than four times that of lead-acid batteries.
Although the application range of lithium iron phosphate batteries is mainly manifested in the direction of power, it can also be extended to more fields in theory. This is determined by the various advantages shown in the above comparison. If the energy density and discharge rate are further, With some improvements, it is entirely possible to enter the traditional application areas of other types of lithium-ion batteries.
