Lithium battery type analysis and classification

Analysis and classification of lithium batteries As many people don't know much about lithium batteries and lithium batteries, and are troubled by many kinds of lithium batteries at home and abroad, bloggers will first analyze the differences between them and the different categories and basis. I planned to discuss this issue when I was writing python to process data (or battery data), but let's discuss it, whether you are lithium-ion software or hardware, you will more or less encounter battery problems. 1. Lithium battery concept Lithium battery is a battery that contains lithium (metallic lithium, lithium alloy, lithium ion, lithium polymer) in the electrochemical system. Lithium batteries can be roughly divided into two types: metal lithium batteries and lithium batteries. Lithium metal batteries are generally non-rechargeable and contain metallic lithium. Lithium batteries do not contain metallic lithium and can be recharged. Due to the distinctive chemical properties of lithium metal, there are high environmental requirements for the production, storage and application of lithium metal. Therefore, lithium batteries have not been used for a long time. 2. The development process of lithium batteries starts from reading the encyclopedia: 3. Lithium batteries Lithium batteries generally use lithium cobalt oxide as the positive electrode, carbon as the negative electrode, filled with electrolyte to form free ion channels, and the gap separates the positive and negative electrodes to prevent short circuits. When charging, due to the use of the electric field, lithium ions swim out of the lithium cobalt oxide, travel in the current fluid, pass through the pores in the gap, reach the negative electrode, and react with carbon to form lithium carbide. In contrast, lithium ions will return to the positive electrode, which is the process of charging and discharging a lithium battery, which is called a rocking chair battery. (The above part is more or less the analysis of the encyclopedia, which is basically correct.) 4. Classification of lithium batteries (1) From the text: cylinder (Tesla uses Panasonic NCR18650B, 18 cm in diameter and 65 cm in length ,0 (cylindrical, but the blog points out that this is the future that may bring consumer batteries and 21700. Samsung also has a batch of them. What are the other types. In 26650, the country's largest cylindrical battery, no matter how much online scolding, yes, he is The largest cylindrical battery factory), side shells (for example, Ningde ATL is currently made by many people in China), soft packs (BianBao is different, less than two share many); (2) made of cathode materials: lithium cobalt oxide, lithium manganese Oxide, lithium iron phosphate, nickel cobalt manganese (three), and the other three types of lithium can be divided into three proportions as follows: (Note: Tesla's NCR18650B is 811) (3) In terms of power or power: consumption of lithium Batteries (used for induction, capacity types, such as CATL), power lithium batteries (importantly used in electric vehicles and other occasions with higher power requirements); (4) According to the electrolyte form: polymer lithium battery PLB, liquid lithium battery LIB5. In conclusion, we should analyze the functions of lithium batteries from the following aspects: (1) capacity (range); (2) power density (dynamic characteristics); (3) consistency (working function); (4) heat dissipation, Safety such as melting point; (5) Cycle times (relative service life); (6) Internal impedance, such as ohmic resistance, polarization resistance (internal loss); (7) Self-discharge. Statement: Some pictures and pictures of articles published on this site The content comes from the Internet. If there is any infringement, please contact to delete the previous article: How many lithium batteries can I take on the plane?