Lithium iron phosphate battery is a lithium battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. The rated voltage of the single cell is 3.2V, and the charging cut-off voltage is 3.6V ~ 3.65V.
Industrial application of lithium iron phosphate battery
- Application of new energy automobile industry
my country’s “Energy Saving and New Energy Vehicle Industry Development Plan” puts forward the overall goal of my country’s new energy vehicle development: by 2020, the cumulative production and sales of new energy vehicles will reach 5 million units, and the scale of my country’s energy saving and new energy vehicle industry will rank among the top in the world . Lithium iron phosphate batteries are widely used in passenger cars, passenger cars, logistics vehicles, low-speed electric vehicles, etc. due to their advantages in safety and low cost. With the advantage of energy density, ternary batteries occupy a dominant position, but lithium iron phosphate batteries still occupy irreplaceable advantages in the fields of passenger cars and logistics vehicles. In the field of passenger cars, lithium iron phosphate batteries accounted for about 76%, 81%, and 78% of the 5th, 6th, and 7th batches of “Recommended Models for the Promotion and Application of New Energy Vehicles” (hereinafter referred to as the “Catalogue”) in 2018. %, remains mainstream. In the field of special vehicles, lithium iron phosphate batteries accounted for about 30%, 32%, and 40% of the 5th, 6th, and 7th batches of the “Catalogue” in 2018, and the application proportion gradually increased.
Yang Yusheng, an academician of the Chinese Academy of Engineering, believes that using lithium iron phosphate batteries in the extended-range electric vehicle market can not only improve the safety of vehicles, but also support the marketization of extended-range electric vehicles, exempting the mileage, safety, price, and cost of pure electric vehicles. Anxiety about charging, follow-up battery issues, etc. During the period from 2007 to 2013, many car companies have launched projects for extended-range pure electric vehicles.
- Start the application on the power supply
In addition to the characteristics of power lithium batteries, start-up lithium iron phosphate batteries also have instantaneous high-power output capabilities. Power-type lithium batteries with energy less than one degree of electricity are used to replace traditional lead-acid batteries, and BSG motors are used to replace traditional starter motors and generators. , not only has the function of idling start and stop, but also has the functions of coasting with the engine stopped, coasting and braking energy recovery, acceleration assist and electric cruise.
- 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, green environmental protection, etc., and supports stepless expansion, suitable for large-scale electric energy storage, in renewable Energy power stations have good application prospects in the fields of safe grid connection of power generation, power grid peak regulation, distributed power stations, UPS power supplies, and emergency power systems.Also read:https://www.aimeno.com/lithium-battery-pack/198.html
According to the latest energy storage report recently released by the international market research organization GTM Research, the application of grid-side energy storage projects in my country in 2018 has led to a continuous increase in the consumption of lithium iron phosphate batteries.
With the rise of the energy storage market, in recent years, some power lithium 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, the energy storage system supporting the lithium iron phosphate battery has become the mainstream choice in the market. According to reports, lithium iron phosphate batteries have been tried to be used in electric buses, electric trucks, user-side and grid-side frequency regulation.
1) Wind power generation, photovoltaic power generation and other renewable energy generation are safely connected to the grid. The inherent randomness, intermittency, 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 the large-scale centralized development and long-distance transmission of most wind farms in my country, the grid-connected power generation of large wind farms poses severe challenges to the operation and control of large power grids.
Photovoltaic power generation is affected by ambient temperature, sunlight intensity and weather conditions, and photovoltaic power generation presents the characteristics of random fluctuations. my country presents a development trend of decentralized development, low-voltage on-site access and large-scale development, and medium and high-voltage access simultaneously, which puts forward higher requirements for power grid peak regulation and safe operation of the power system.
Therefore, large-capacity energy storage products have become a key factor in solving the contradiction between power grids and renewable energy power generation. The lithium iron phosphate battery energy storage system has the characteristics of fast switching of working conditions, flexible operation mode, high efficiency, safety and environmental protection, and strong scalability. Local voltage control issues, improving the reliability of renewable energy power generation and improving 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 tests of safety and reliability, lithium iron phosphate battery energy storage systems are expected to be used in renewable energy such as wind power generation and photovoltaic power generation. It has been widely used in safe grid connection of energy generation and improvement of power quality.
2) Power grid peak regulation. An important means of power grid peak regulation has always been the pumped storage power station. Since the pumped storage power station needs to build two reservoirs, the upper and lower reservoirs, which are limited by geographical conditions, it is not easy to build in plain areas, and it occupies a large area and the maintenance cost is high. The lithium iron phosphate battery energy storage system is used to replace the pumped storage power station to cope with the peak load of the power grid. It is not restricted by geographical conditions, and the location is free. It has less investment, less land occupation, and low maintenance costs. It will play an important role in the peak load regulation of the power grid. .
3) Distributed power station. Due to the defects of the large-scale power grid itself, it is difficult to guarantee the quality, efficiency, safety and reliability requirements of power supply. For important units and companies, 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 prevent 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 industries, and precision manufacturing industries play an important role.Also read:https://www.aminobattery.com/lithium-battery/205.html
4) UPS power supply. The sustained and rapid development of my country’s economy has led to the decentralization of UPS power supply user needs, making more industries and more companies have continuous demand for UPS power supplies.
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 integrated technology and the continuous reduction of costs, lithium iron phosphate batteries are used in UPS power batteries. will be widely used.
- Applications in other fields
Lithium iron phosphate batteries are also widely used in the field due to 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 Science and Technology Innovation Achievement Exhibition, exhibiting products including -45°C ultra-low temperature batteries.