Briefly describe the basic concepts of power lithium-ion batteries

Power lithium-ion battery refers to a device that can store electrical energy and can be recharged to supply energy for driving the car, including lithium-ion power lithium-ion battery, metal hydride nickel-powered lithium-ion battery and super capacitor Etc., excluding lead-acid batteries. At present, my country's new energy vehicle power lithium-ion battery is mainly used in lithium-ion power lithium-ion battery systems. Due to the criticality of power lithium-ion batteries in the use of automobiles, power lithium-ion batteries are compared to the heart of new energy vehicles. 2 Classification 2.1 Industrialized use of power lithium-ion batteries At present, the mainstream use of batteries for new energy vehicles in the world is lithium batteries. According to the difference in the positive electrode material system, the lithium batteries currently used in the market can be divided into lithium iron phosphate batteries, ternary batteries and lithium manganate batteries. Lithium iron phosphate battery, the cathode material is lithium iron phosphate, this type of battery has important characteristics such as high technology maturity, low processing cost, good safety, and long cycle life. For ternary batteries, the battery cathode material is composed of nickel, manganese (or aluminum), cobalt and lithium. At present, the nickel-cobalt-manganese lithium battery with the highest market share. The ternary material battery has higher energy density, good charge and discharge rate performance and low temperature performance, but the safety and cycle life are not as good as lithium iron phosphate batteries. As the name suggests, the positive electrode material of lithium manganate battery is lithium manganate. This type of battery has low cost, excellent rate performance, and good safety. The disadvantages are poor storage and cycle life and low specific energy. 2.2 Under-developed new power lithium-ion batteries Under the electrification trend of the global automobile industry, vehicles with high driving range require power lithium-ion batteries with higher energy density and better rate charging and discharging performance. Therefore, the next generation of new system batteries should have high specific energy, high specific power, high safety, cycle life and lower cost indicators. At present, the direction of lithium battery research is based on two types of solid-state batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous: Do you know what is going on with low battery capacity?