Photovoltaic power generation has discontinuity and instability, and power generation performance varies with changes in the external environment. Therefore, high-performance energy storage lithium iron phosphate batteries are crucial to the development of the photovoltaic industry.

　　Solar power generation systems are costly, but low conversion efficiency, and highly variable with the environment, so the requirements for energy storage are relatively high. The service life of a solar photovoltaic power generation system is generally 20 years, and the energy storage battery link required with it has the characteristics of long service life, stable performance, high energy efficiency, and strong adaptability to the environment.

　　Lithium iron phosphate battery has the characteristics of large input and output power, wide operating temperature range, no memory effect, maintenance-free, 2000-4000 charging and discharging life, safety, and eco-friendly. It just makes up for the shortcomings of lead-acid batteries.

　　The voltage platform of lithium iron phosphate battery is 3.2V, the specific energy is more than twice that of lead-acid batteries, and the volume specific energy is 4 to 5 times that of lead-acid batteries. If lithium iron phosphate batteries are used instead of lead-acid batteries for photovoltaics, the power generation system can greatly reduce the space occupied by the battery and reduce the maintenance workload.

　　Lithium iron phosphate batteries are available in power type or energy type, with a wide range of applications, and their safety is greatly improved compared with lead-acid batteries. At the same time, the rate characteristics of lithium iron phosphate batteries are 5C～15C, and the conversion efficiency is greater than 95%, while the rate characteristics of lead-acid batteries are 0.1C～1C, and the conversion efficiency is greater than 80%. Therefore, in terms of energy storage efficiency, lithium iron phosphate batteries have obvious advantages.