Why can lithium iron phosphate batteries achieve long life and low cost?

Why lithium iron phosphate batteries can achieve long life and low cost power lithium batteries? The overall cost of service life performance (cycle) is closely related to the use of lithium iron phosphate batteries. Compared with ordinary lithium ion batteries, the cycle life of lithium iron phosphate batteries is 500 times. 1500 charge-discharge cycles at room temperature, the retained capacity exceeds 95%, and the 50% output reaches more than 2,000 times the life cycle. The battery life is more than 500,000 kilometers of continuous mileage. It can be used for about 5 years, which is 8 times that of lead-acid batteries. , 3 times that of nickel-metal hydride batteries and 4 times that of lithium cobalt oxide batteries. In addition, its manufacturing cost is lower than that of ordinary lithium-ion batteries, which undoubtedly can greatly reduce the use and maintenance costs of electric vehicles. At the same time, the discharge performance of the lithium iron phosphate battery is also very good, the power curve is stable, and the anti-overdischarge ability is strong. Ordinary lithium-ion batteries will be over-discharged after the battery is below 3.2v, which may lead to scrap. But the lithium iron phosphate battery still has 2.8v energy release, even if it is less than 2.5v, there is no problem of scrapping. The basic composition of the lithium-ion battery charging module is a universal charging module for lithium iron phosphate batteries, which is composed of a charging current sampling circuit, a charging switch tube, an integrated control circuit, and a charging voltage sampling circuit, as shown in Figure 1. The charging sampling circuit can set the constant charging current of the charging module according to the capacity of the charged lithium iron phosphate battery. The laptop is full of 10 Ah lithium iron phosphate battery, currently it can be set to 3a voltage sampling circuit. According to a series of keeping charging lithium iron phosphate battery number, set the general charging module to output a constant charging voltage, such as the ferrous phosphate of a single miner’s lamp For lithium ion battery charging, the mobile DVD voltage is set to 3.65V and the two series of lithium iron phosphate batteries are charged. The voltage of the 11 series battery lithium iron phosphate electric moped should be set to 7.3V, and the voltage should be set to 40V. The function of the integrated control circuit is to realize the optimal charging of the lithium iron phosphate battery by controlling the switch. After charging starts, charge the lithium iron phosphate battery with constant current. When the battery voltage reaches the set constant voltage charging, it will automatically switch to constant voltage charging to ensure that the lithium iron phosphate battery is safe, fast and fully charged. The charging switch adopts MOSFET, and the rated current value of MOSFET can be selected according to the set charging current. 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 post: Choose high-efficiency charging or high-quality experience for rechargeable batteries?