Explain the technical knowledge of lithium battery

1. What is lithium battery? Lithium battery is the battery we use in mobile phones or electric vehicles.英文: Li's more professional explanation is a rechargeable battery that uses metal lithium or lithium alloy as the cathode material and uses a non-hydrolyzed solution. Lithium batteries can be roughly divided into two categories: lithium batteries and lithium metal batteries. We use a lot of lithium batteries, and then we start to see lithium metal batteries are safer, more powerful, and more cost-effective. Lithium batteries do not contain metallic lithium and can be recharged. The lithium battery mentioned in this article mainly refers to the lithium battery. Lithium battery is mainly composed of two parts: battery and management system (a simple management system is also called protection board). The battery is the heart of the lithium battery, and the battery management system is the brain of the lithium battery. Battery, BMS (Battery Management System), PCM (Protection Circuit Module) lithium batteries must use a proper battery management system, otherwise it is very dangerous. A lithium battery with a lithium battery management system is usually called a lithium pack. 2. What is lithium battery power? Lithium battery is a kind of power, which refers to the application on the power transmission system of the battery, and it is related to the consumption of lithium batteries, such as electric vehicles, lithium batteries, electric bicycle lithium batteries, and power tools , Lithium batteries of self-balancing vehicles, lithium batteries are more extensive and sometimes energy storage lithium batteries power lithium-ion batteries. Compared with ordinary lithium batteries, power lithium batteries generally have more special requirements, such as high energy density, high volume-to-energy ratio, wide temperature range, high power discharge support, longer cycle life and more safety. 3. The structure of lithium batteries Lithium batteries are mainly composed of four parts: positive electrode material, negative electrode material, electrolyte, and thin film. Lithium battery packs are mainly composed of two parts: battery and battery management system. 4. The working principle of lithium battery Lithium battery is that lithium ions are repeatedly inserted between the positive electrode and the negative electrode to realize the charging and discharging of the battery. It is actually a redox reaction. The principle of the charging process is as follows (the opposite of the discharge process): Positive electrode: LiCoO2→Li(1-x)CoO2+(x)Li++(x)e- negative: C+(x)Li++(x)e-→CLi(x) battery Reaction: LiCoO2+C→Li(1-x)CoO2+CLi(x) 5. Advantages and disadvantages of lithium batteries Compare the advantages and disadvantages of lithium batteries with lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries and other batteries. Lithium batteries have the advantages of high voltage, high energy density (light weight, small size), long service life, and environmental protection. The disadvantages of lithium batteries are relatively high price, relatively narrow temperature range, and certain safety risks (to add a new protection system). 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 post: Share the knowledge of lithium battery use and maintenance