Introduction to the advantages and application fields of high-rate lithium-ion batteries

Advantages of high-rate lithium-ion batteries ①It has the characteristics of excellent high-current discharge performance, sufficient explosive power, high discharge platform, and good cycle life; ②It has high energy density and adopts laminated technology, which is more conducive to the rate due to its low internal resistance. Charge and discharge, high-efficiency output performance; ③Supply higher discharge rate, up to 45C, better temperature stability during discharge, controlled within 65 degrees Celsius to prevent overheating and damage; ④Lithium-ion battery is ultra-thin and bulky Small and light weight, it can be made into special-shaped batteries of various shapes and capacities, and the thickness can be 0.45mm. High-rate lithium-ion battery applications. High-rate lithium-ion batteries mainly include iron phosphate lithium-ion batteries, polymer lithium-ion batteries and nickel-metal hydride batteries. The first two are soft-packed aluminum film forms, and the last one is steel. The shell is cylindrical. These three high-rate batteries are widely used in 3C electronic products, model entertainment, power tools, unmanned aerial vehicles, industrial power supplies and other fields. With excellent comprehensive strength and high-quality services, they are widely praised by partners. With the development of the industry, there is a demand for higher rate and faster charging of lithium-ion batteries, which has promoted the technological improvement and application of rate batteries. At present, high-rate batteries are widely used in aerial photography drones, agricultural plant protection drones, emergency starting power supplies, model airplanes, power tools, etc. There is a layer of SEI film on the surface of the negative electrode of a lithium battery. In fact, the rate performance of a lithium battery is largely controlled by the diffusion of lithium ions in the SEI film. Since the polarization of the powder electrode in the organic electrolyte is much more serious than that of the water system, lithium is likely to be deposited on the surface of the negative electrode under high-rate or low-temperature conditions, which brings serious safety risks. In addition, under high-rate charging conditions, the crystal lattice of the positive electrode material is easily damaged, and the graphite sheet layer of the negative electrode may also be damaged. These factors will accelerate the attenuation of the capacity and seriously affect the service life of the lithium-ion battery. High-rate lithium-ion batteries are suitable for use in some light equipment, to achieve a rapid increase in the operating speed of the equipment, such as competitive drones, light track racing, water electric skateboards, etc.; or used in some power tools, such as electric power steering, etc. Yes, as long as the high rate discharge in a short time is enough to make the fasteners loose. High-rate lithium-ion batteries are currently unable to provide long-lasting high-current discharge, which can easily cause failures or accidents when the battery is too high temperature. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to extend the life of UPS battery