Development status and trend analysis of power lithium-ion batteries

The development status and trend of power lithium-ion batteries are accompanied by the increase in sales of new energy vehicles in my country and the upgrading of battery technology. As the core power of new energy vehicles, lithium-ion batteries are also divided into different types due to different raw materials. For example, lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lithium batteries, etc., have been widely used in a certain stage of the development of the automotive industry by virtue of their respective advantages. Now, the mainstream power lithium-ion battery on the market is a lithium battery. So what are the advantages and disadvantages of lithium batteries? How will battery skills be used in the future? Lithium iron phosphate batteries are a type of lithium batteries. At present, BYD e6, BAIC ev160, Tengshi and other electric vehicle manufacturers are all using it as vehicle power source. The thermal stability of lithium iron phosphate batteries is currently the best among lithium batteries for automobiles. When the battery temperature is at a high temperature of 500-600°C, its internal chemical composition begins to differentiate, and the internal chemical composition of the lithium cobalt oxide battery, which is also a lithium battery, is in an unstable state at 180-250°C. In other words, the safety of lithium iron phosphate batteries is second to none in lithium batteries, and because of this, it has become one of the important categories of electric vehicle batteries. The Tesla model S used in the ternal-lithium energy density battery is about 200wh/kg, and the energy density of the lithium iron phosphate battery is about 150wh/kg, which means that the internal-lithium battery packs have the same range Longer than lithium iron phosphate batteries. But when the self-temperature of the ternary lithium battery is 250-350℃, its internal chemical composition begins to differentiate, which puts forward higher requirements on the battery management system. For example, Tesla MODELS is equipped with more than 7,000 18650 lithium batteries. The battery management system needs to monitor the usage status of each battery, which undoubtedly adds to the control difficulty of the battery management system. 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: The basic structure and principle of lithium batteries