Analysis of the technology of lithium titanate battery and the use of energy storage system

Lithium titanate battery technology replaces nanometer lithium titanate materials with low-cost submicron lithium titanate materials, and builds a lithium titanate battery material system for energy storage based on this. Lithium titanate battery has the advantages of small size, light weight, high energy density, good sealing performance, no leakage, no memory effect, low self-discharge rate, rapid charge and discharge, long cycle life, wide working environment temperature range, safety, stability, and environmental protection Features. The competition of lithium titanate battery technology in various energy storage batteries in our country should occupy the advantages of time, location and people. In terms of service life, the ultra-long cycle life of lithium titanate batteries is far better than that of various lead-acid batteries; its efficiency, cost and electrochemical performance are even better than those of sodium-sulfur and flow vanadium battery systems. The applicable markets for lithium titanate battery technology are hybrid electric vehicles, special industrial applications and energy storage applications such as frequency modulation and grid voltage support. These markets are still in their infancy in the world, and it is not yet known who is the leader. Lithium titanate technology is expected to become a leader in these markets. Compared with graphite materials commonly used in traditional lithium batteries, lithium titanate materials hardly shrink or expand during the process of lithium insertion and removal during charging and discharging. They are called zero-strain materials, and are guarded against general electrode materials for the removal/intercalation of lithium. The problem of damage to the electrode structure caused by the volume strain of the unit cell during ionization, and thus has very excellent cycle performance. The most important issue faced by lithium titanate batteries in large-scale use is cost. At the beginning of the project, the price was 46 times that of lithium iron phosphate batteries. The price of lithium titanate batteries remains high. Although the performance is significantly better than existing lithium batteries, economic factors greatly limit the market promotion of lithium titanate batteries. The road ahead for lithium titanate batteries will still be bumpy, but the direction is always forward. The efforts made by industry companies and research institutions on the development of lithium titanate battery technology will promote the continuous development of lithium titanate batteries. The use of energy storage in lithium titanate battery energy storage systems is considered to be the next frontier of new energy, and the use of lithium titanate batteries in the field of energy storage is highly expected. Lithium titanate battery has long cycle life, outstanding safety, excellent power characteristics and good economy. These characteristics will be the key cornerstones of the large-scale lithium energy storage system industry that is currently emerging. The development of energy storage technology is one of the key core technologies to promote new energy generation and improve the security and stability of the power grid. Among various types of electrochemical energy storage technologies, lithium titanate batteries have the characteristics of long cycle life and good safety performance, which are well suited to the use scenarios of grid energy storage. Taking the on-board energy storage system of rail transit vehicles as the object, the performance of the on-board energy storage components such as supercapacitors, high-energy capacitors and lithium batteries currently used in rail transit vehicles is compared and decomposed, and it is concluded that lithium titanate batteries have high power density, Technical features of high energy density and high reliability. Combined with the research on the performance characteristics and control strategy of lithium titanate battery, through the comparison of project use cases and field experiments, the technical advantages and broad prospects of the large-scale use of lithium titanate battery in the energy storage system of subway vehicles are shown. In response to the demand for energy storage, based on the original lithium titanate battery, the principles and technical methods for restructuring the lithium titanate battery material system to meet the demand for energy storage were proposed, and sub-micron lithium titanate materials were developed. The lithium titanate battery for energy storage developed by the project maintains the inherent characteristics of long life and high rate, and the cost is greatly reduced. Lithium titanate battery energy storage technology provides technology accumulation for the construction of large-scale long-life lithium battery energy storage systems, and at the same time lays a technical foundation for the industrialization of long-life lithium battery energy storage devices and promotes the use of new energy. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Lithium battery production method and laser production process analysis