Cascade utilization of lithium iron phosphate batteries

Generally speaking, the retired lithium iron phosphate battery of an electric vehicle still has nearly 80% of its capacity remaining, and there is still 20% of its capacity when it is 60% completely scrapped. It can be used in occasions with lower power requirements than automobiles, such as low-speed electric vehicles Communication base stations, etc., to realize the cascade utilization of waste batteries. Lithium iron phosphate batteries decommissioned from automobiles still have high utilization value. The step-by-step utilization process of power batteries is as follows: the enterprise recycles decommissioned batteries—dismantles—tests and grades—classifies by capacity—reassembles battery modules. At the level of battery preparation, the remaining energy density of waste lithium iron phosphate batteries can reach 60~90Wh/kg, and the recycling life can reach 400~1000 times. With the improvement of battery preparation level, the recycling life may be further improved. Compared with lead-acid batteries with a cycle life of 45Wh/kg and a cycle life of about 500 times, waste lithium iron phosphate batteries still have performance advantages. Moreover, the cost of waste lithium iron phosphate batteries is relatively low, only 4,000-10,000 yuan/t, which is very economical.