Lithium iron phosphate battery, refers to the lithium-ion battery with lithium iron phosphate as the cathode material, lithium iron phosphate battery has the advantages of high operating voltage, high energy density, long cycle life, good safety performance, small self-discharge rate, no memory effect. So what are the main applications of lithium iron phosphate batteries?
Application areas of lithium iron phosphate batteries
1, the application of new energy automotive industry
Lithium iron phosphate battery due to its safety, low cost and other advantages widely used in passenger cars, buses, logistics vehicles, low-speed electric vehicles, etc. Although, in the current field of new energy passenger cars, by the national subsidy policy for new energy vehicles, with the advantage of energy density, ternary batteries once dominated, but lithium iron phosphate is still in the bus, logistics vehicles and other areas occupy an irreplaceable advantage. The latest data show that lithium iron phosphate batteries in the total battery shipments, and occupy half of the mountain.
2, the application of starter power
Starter lithium iron phosphate battery in addition to the characteristics of the power lithium battery, but also has an instantaneous high-power output capacity, with energy less than a power lithium battery instead of traditional lead-acid batteries, with BSG motor instead of the traditional starter motor and generator, not only has the idle start-stop function, but also has the engine stop coasting, coasting and braking energy recovery, acceleration assistance and electric cruise function.
3, the application of energy storage market
Lithium iron phosphate battery has a high operating voltage, high energy density, long cycle life, small self-discharge rate, no memory effect, green and a series of unique advantages, and support stepless expansion, suitable for large-scale electrical energy storage, renewable energy power station power generation safety to the grid, grid peaking, distributed power plants, UPS power supply, emergency power systems and other fields have good application prospects.
With the rise of the energy storage market, in recent years, some power battery companies have laid out energy storage business, to develop new applications for lithium iron phosphate market. On the one hand, lithium iron phosphate due to ultra-long life, safety, high capacity, green and other characteristics, can be transferred to the field of energy storage will extend the value chain, to promote the establishment of a new business model. On the other hand, lithium iron phosphate supporting energy storage system has become the mainstream choice of the market. According to the report, lithium iron phosphate batteries have been tried for electric buses, electric trucks, user side and grid side frequency regulation.
(1) Wind power, photovoltaic power generation and other renewable energy generation safety to the grid. The inherent randomness, intermittency and volatility of wind power generation determines that its large-scale development will certainly have a significant impact on the safe operation of the power system. With the rapid development of wind power industry, especially most of the wind farms in China are "large-scale centralized development and long-distance transmission", the grid connection of large wind farms poses a serious challenge to the operation and control of large power grids.
Photovoltaic power generation is affected by ambient temperature, sunlight intensity and weather conditions, and PV power generation is characterized by random fluctuations. China shows the development trend of "decentralized development, low-voltage local access" and "large-scale development, medium and high-voltage access", which puts forward higher requirements for grid peaking and safe operation of power system.
Therefore, high-capacity energy storage products become a key factor to solve the contradiction between the power grid and renewable energy generation. Lithium iron phosphate energy storage system has the characteristics of fast working condition conversion, flexible operation mode, high efficiency, safety and environmental protection, strong scalability, etc. It has carried out engineering application in the national scenery storage and transmission demonstration project, which will effectively improve equipment efficiency, solve the local voltage control problem, improve the reliability of renewable energy power generation and improve power quality, and make renewable energy become a continuous and stable power supply.
With the continuous expansion of capacity and scale, the integration technology continues to mature, the cost of energy storage system will be further reduced, after long-term testing of safety and reliability, lithium iron phosphate energy storage system is expected to be widely used in wind power generation, photovoltaic power generation and other renewable energy generation safety grid and improve power quality.
(2) Grid peaking. The main means of power grid peaking has been pumped storage power station. As pumped storage power plants need to build two reservoirs, the upper and lower reservoirs, subject to geographical constraints, not easy to build in the plains, and covers an area of large, high maintenance costs. The use of lithium iron phosphate energy storage system instead of pumped storage power station, to cope with the peak load of the power grid, not subject to geographical constraints, free site selection, less investment, less land, low maintenance costs, in the process of grid peaking will play an important role.
(3) Distributed power plants. Large-scale power grids own defects, it is difficult to guarantee the quality, efficiency, safety and reliability requirements of power supply. For important units and enterprises, often require dual power or even multiple power sources as backup and security. Lithium iron phosphate energy storage system can reduce or avoid power outages due to grid failures and various unexpected events, play an important role in ensuring safe and reliable power supply to hospitals, banks, command and control centers, data processing centers, chemical material industries and precision manufacturing industries.
(4) UPS power supply. China's continued rapid economic development brought about by the decentralization of UPS power supply user demand, making more industries and more companies have a continuous demand for UPS power supply.
Lithium iron phosphate batteries relative to lead-acid batteries, with a long cycle life, safe and stable, green, small self-discharge rate, etc., with the integration of technology continues to mature, the cost continues to reduce, lithium iron phosphate batteries in UPS power supply will be widely used.
4, other areas of application
Lithium iron phosphate battery because of its good cycle life, safety, low temperature performance and other advantages, in the military field has also been widely used. 2018 October 10, Shandong, a battery company strong appearance at the first Qingdao military-civilian integration of science and technology innovation achievements exhibition, exhibiting military products, including -45 ℃ military ultra-low temperature battery.
