What are the applications of lithium iron phosphate batteries in the energy storage market?

　　Lithium iron phosphate batteries have a series of unique advantages, such as high working voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, green environment protection, etc. They also support stepless expansion and are suitable for large-scale power storage. They have good application prospects in the fields of safe grid connection, power grid peak regulation, distributed power stations, UPS power supply, emergency power system and so on.

　　With the rise of energy storage market, in recent years, some power battery enterprises have laid out energy storage business to open up a new application market for lithium iron phosphate batteries. On the one hand, lithium iron phosphate, due to its long life, safe use, large capacity, green and environmental characteristics, can be transferred to the field of energy storage will extend the value chain and promote the establishment of a new business model. On the other hand, the energy storage system for lithium iron phosphate batteries has become the mainstream choice in the market. Lithium iron phosphate batteries have been reported to be used for frequency modulation on electric buses, trucks, user-side and grid-side.

　　1. Safe grid connection of renewable energy generation such as wind power generation and photovoltaic power generation

　　The inherent randomness, intermittentity and fluctuation of wind power determine that its large-scale development will inevitably have a significant impact on the safety of power system operation. With the rapid development of wind power industry, especially the large-scale centralized development and long-distance transmission of most wind farms in China, the grid-connected generation of large wind farms poses a serious challenge to the operation and control of large power networks.

　　Photovoltaic power generation is affected by environmental temperature, solar illumination intensity and weather conditions, and shows the characteristics of random fluctuations. Therefore, large capacity energy storage products become the key factor to resolve the contradiction between power grid and renewable energy generation. The lithium iron phosphate battery energy storage system has the features of fast operating mode, flexible operation mode, high efficiency, safety, environmental protection and strong scalability. It has been applied in the national landscape storage and transportation demonstration project. It will effectively improve the equipment efficiency, solve local voltage control problems, improve the reliability of renewable energy generation and improve the power quality, and make the renewable energy a continuous and stable power supply.

　　With the expansion of capacity and scale and the maturity of integrated technology, the cost of energy storage system will be further reduced. After a long-term test of safety and reliability, lithium iron phosphate battery energy storage system is expected to be widely used in the safe grid connection of renewable energy generation, such as wind power generation, photovoltaic power generation, and improving power quality.

　　2. Power grid peak shaving

　　Pumped storage power station is always the main means of peak regulation in power network. Because the pumped storage power station needs to build two reservoirs, upper and lower, which are more limited by geographical conditions, it is not easy to build in the plain area, and it covers a large area and has a high maintenance cost. Using lithium iron phosphate battery storage system instead of pumped storage power station, it will play an important role in peak load regulation of power network, not limited by geographical conditions, free site selection, less investment, less space occupied, low maintenance cost.

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