Lithium iron phosphate batteries have a series of unique advantages such as high operating voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, and green environmental protection. 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 of renewable energy power stations, grid peak shaving, distributed power stations, UPS power supplies, emergency power systems, and other fields.
With the rise of the energy storage market, in recent years, some power battery companies have deployed energy storage businesses to explore new application markets for lithium iron phosphate batteries. On the one hand, lithium iron phosphate can be transferred to the energy storage field due to its ultra-long life, safe use, large capacity, and green environmental characteristics, which 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. It is reported that lithium iron phosphate batteries have been tried for frequency modulation on electric buses, electric trucks, user side, and power grid side.
1. Safe grid connection of renewable energy power generation such as wind power generation and photovoltaic power generation
The inherent characteristics of wind power generation such as randomness, intermittency, and volatility determine that its large-scale development will inevitably have a significant impact on the safe operation of the power system. With the rapid development of the wind power industry, especially in China, most of the wind farms are “large-scale centralized development and long-distance transmission”. Large wind farms connected to the grid for power generation pose a serious challenge to the operation and control of large power grids.
Photovoltaic power generation is affected by environmental temperature, solar irradiance, and weather conditions, and exhibits a characteristic of random fluctuations. Therefore, large-capacity energy storage products have become a key factor in solving the contradiction between power grids and renewable energy generation. Lithium iron phosphate battery energy storage system has the characteristics of fast operating mode conversion, flexible operation mode, high efficiency, safety and environmental protection, and strong scalability. It has been implemented in the national wind and solar energy storage and transmission demonstration project, which will effectively improve equipment efficiency, solve local voltage control issues, improve the reliability of renewable energy power generation, and improve power quality, making renewable energy a continuous and stable power supply.
With the continuous expansion of capacity and scale, and the continuous maturity of integrated technology, the cost of energy storage systems will be further reduced. After long-term testing of safety and reliability, lithium iron phosphate battery energy storage systems are expected to be widely used in the safe grid connection and improvement of power quality of renewable energy generation such as wind power and photovoltaic power generation.
2. Peak shaving of power grid
The main means of peak load regulation in power grids has always been pumped storage power stations. Due to the need to build upper and lower reservoirs for pumped storage power stations, which are greatly restricted by geographical conditions, it is not easy to build in plain areas, and it also occupies a large area and has high maintenance costs. The use of lithium iron phosphate battery energy storage systems to replace pumped storage power stations will play an important role in the peak load regulation process of the power grid, free from geographical constraints, free location, low investment, small land occupation, and low maintenance costs.
3. Distributed power station
Due to the inherent defects of large power grids, it is difficult to ensure the quality, efficiency, safety and reliability requirements of power supply. For important units and enterprises, dual or even multiple power supplies are often required as backup and protection. Lithium iron phosphate battery energy storage systems can reduce or avoid power outages caused by grid failures and various unexpected events, and play an important role in ensuring safe and reliable power supply in hospitals, banks, command and control centers, data processing centers, chemical materials industries, and precision manufacturing industries.
4. UPS power supply
The continuous and rapid development of the economy has led to the diversification of user demand for UPS power, resulting in a sustained demand for UPS power from more industries and enterprises.
Compared to lead-acid batteries, lithium iron phosphate batteries have advantages such as long cycle life, safety and stability, green environmental protection, and low self-discharge rate. With the continuous maturity of integrated technology and the continuous reduction of cost, lithium iron phosphate batteries will be widely used in UPS power supply batteries.
Post time: Mar-24-2023