Introduction to the main application areas of lithium iron phosphate(LiFePo4) batteries

Lithium iron phosphate battery refers to a lithium ion battery that uses lithium iron phosphate as the cathode material. Lithium iron phosphate battery has the advantages of high working voltage, high energy density, long cycle life, good safety performance, low self-discharge rate, and no memory effect. . So what are the main application areas of lithium iron phosphate batteries?

Application fields of lithium iron phosphate batteries

1. Application of new energy automobile industry

Lithium iron phosphate batteries are widely used in passenger cars, buses, logistics vehicles, low-speed electric vehicles, etc. due to their safety and low cost advantages. Although, in the current new energy passenger vehicle field, it is subject to the state's subsidy policy for new energy vehicles. Influence, relying on the advantages of energy density, ternary batteries once occupied a dominant position, but lithium iron phosphate batteries still occupy an irreplaceable advantage in fields such as passenger cars and logistics vehicles. The latest data shows that lithium iron phosphate batteries account for half of the total battery shipments.

2. Start the application on the power supply

In addition to the power lithium battery characteristics, the start-up lithium iron phosphate battery also has the ability to output high instantaneous power. The traditional lead-acid battery is replaced by a power lithium battery with an energy of less than one kilowatt-hour, and the traditional starter motor and generator are replaced by a BSG motor. , It not only has the function of start and stop at idle speed, but also has the functions of engine stop coasting, coasting and braking energy recovery, acceleration assist and electric cruise.

3. Application of energy storage market

Lithium iron phosphate battery has a series of unique advantages such as high working voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, and green environmental protection. It also supports stepless expansion and is suitable for large-scale electric energy storage. Energy power stations have good application prospects in such fields as safe grid connection, grid peak shaving, distributed power stations, UPS power supplies, and emergency power systems.

With the rise of the energy storage market, in recent years, some power battery companies have deployed energy storage business to open up new application markets for lithium iron phosphate batteries. On the one hand, due to the characteristics of ultra-long life, safe use, large capacity, and environmental protection, lithium iron phosphate can be transferred to the energy storage field, which will extend the value chain and promote the establishment of a new business model. On the other hand, energy storage systems supporting lithium iron phosphate batteries have become a mainstream choice in the market. According to reports, lithium iron phosphate batteries have tried to be used in electric buses, electric trucks, user-side and grid-side frequency modulation.

(1) Wind power, photovoltaic power and other renewable energy power generation are safely connected to the grid. The inherent randomness, intermittentness and volatility of wind power generation 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 most of my country's wind farms are "large-scale centralized development and long-distance transmission", the grid-connected power generation of large-scale wind farms poses severe challenges to the operation and control of large-scale power grids.

Photovoltaic power generation is affected by ambient temperature, solar intensity and weather conditions, and photovoltaic power generation presents the characteristics of random fluctuations. my country is presenting a development trend of "decentralized development, low-voltage local access" and "large-scale development, medium-high voltage access" simultaneously, which puts forward higher requirements for power grid peak shaving and safe operation of the power system.

Therefore, large-capacity energy storage products have become a key factor in solving the contradiction between the power grid and renewable energy power generation. The lithium iron phosphate battery energy storage system has the characteristics of fast working condition conversion, flexible operation mode, high efficiency, safety and environmental protection, and strong scalability. Engineering applications have been carried out in the national wind and solar storage and transmission demonstration project, which will effectively improve equipment efficiency and solve Local voltage control problems, improve the reliability of renewable energy power generation and improve power quality, so that renewable energy can become a continuous and stable power supply.

With the continuous expansion of capacity and scale and the continuous maturity of integrated technologies, the cost of energy storage systems will be further reduced. After long-term safety and reliability tests, lithium iron phosphate battery energy storage systems are expected to be used in wind power, photovoltaic power generation and other renewable The safe grid connection of energy power generation and the improvement of power quality have been widely used.

(2) Power grid peak shaving. The main method of power grid peak shaving has always been pumped storage power stations. Because pumped storage power stations need to build two reservoirs, the upper and lower reservoirs are relatively restricted by geographical conditions. They are not easy to build in plain areas, and they occupy a large area and high maintenance costs. Use lithium iron phosphate battery energy storage system to replace pumped storage power station, cope with grid peak load, free of geographical conditions, free site selection, less investment, less land occupation, low maintenance cost, and will play an important role in the process of grid peak shaving .

(3) Distributed power station. The shortcomings of large-scale power grids make it difficult to guarantee the quality, efficiency, safety and reliability requirements of power supply. For important units and enterprises, dual power supplies or even multiple power supplies are often required as backup and protection. Lithium iron phosphate battery energy storage system can reduce or avoid power outages caused by grid failures and various accidents, and ensure safe and reliable power supply for hospitals, banks, command and control centers, data processing centers, chemical materials industry, and precision manufacturing industries. Play an important role.

(4) UPS power supply. The sustained and rapid development of China's economy has brought about the decentralization of UPS power users' demand, which has caused more industries and more enterprises to have continuous demand for UPS power supplies,BK specialize in lifepo4 lithium pouch/prismatic/cylindrical cell charge discharge formation grading testing,cycle testing solution for more than 20 years,welcome to visit our website batterytester.com to find your lifepo4 cell performance testing solutions.

Compared with lead-acid batteries, lithium iron phosphate batteries have the advantages of long cycle life, safety and stability, environmental protection, and low self-discharge rate. With the continuous maturity of integration technology, the cost continues to decrease. Lithium iron phosphate batteries are used in UPS power batteries. Will be widely used.

4. Applications in other fields

Lithium iron phosphate batteries are also widely used in the military field because of their good cycle life, safety, low temperature performance and other advantages. On October 10, 2018, a battery company in Shandong made a strong appearance at the first Qingdao Military-civilian Integration Technology Innovation Achievement Exhibition, exhibiting military products including -45°C military ultra-low temperature batteries.