Lithium battery manufacturers analyze the relevant knowledge about lithium batteries

The emergence of lithium-ion batteries has changed the way people use electricity. Smaller lithium batteries can be more convenient and compatible with portable devices. Our daily use of mobile phones, Bluetooth headsets, smart bracelets, portable computers, tablets, and portable electronic devices all benefit from lithium. The high performance of the battery, the lithium battery manufacturer will use popular language to decompose and explain the relevant knowledge of the lithium battery. 1) Classification of lithium batteries 1) According to the appearance of lithium batteries: square lithium batteries (such as commonly used cell phone battery cells) and cylindrical lithium batteries (such as 18650); 　　 2) according to lithium battery outsourcing materials: aluminum shell Lithium battery, steel shell lithium battery, soft pack battery; 　　3) According to the positive and negative electrode materials (additives) of lithium battery: Lithium acid (LiCoO2) battery or lithium manganate (LiMn2O4), lithium iron phosphate battery, disposable dioxide Manganese lithium battery; Another method: Li-ion LIB, polymer PLB. 4) Different performance and use aspects: 　　 disposable lithium battery--lithium manganese battery-button 3 volt battery high capacity (high platform) lithium Batteries-High-rate lithium batteries used in mobile phone digital products;-High-temperature lithium batteries used in electric vehicles and power tools and airplane models;-Miner's lamps, room lighting, machine built-in backup power; 　　 low-temperature lithium battery; －－－Outdoor environment, north (winter) south pole; 　　5) Lithium batteries are also divided into two categories: non-rechargeable and rechargeable. 2) Lithium battery structure 　　 Lithium battery has five main blocks in structure: positive electrode, negative electrode, electrolyte, separator, casing and electrode lead.　　 At present, the more commonly used lithium battery materials are lithium cobalt oxide, lithium nickel oxide and lithium manganate. The most used material is lithium cobalt oxide, which has good cycle performance and is convenient to manufacture. The disadvantage is that the cobalt compound is more expensive. Lithium nickelate is difficult to manufacture because of its unstable nature. Generally, it is the compound of lithium cobaltate doped with nickel, also known as lithium nickel cobaltate. Lithium manganate is also a very good material. For many reasons, such as the faster attenuation of lithium manganate at high temperatures, most of the current applications are still in the laboratory stage.　　 The structure of lithium batteries is mainly divided into two types: winding type and stacked type. Liquid lithium batteries use a winding structure, while polymer lithium batteries have two types. In the winding type, the positive electrode membrane, the separator, and the negative electrode membrane are placed in sequence and wound into a cylindrical or flat cylindrical shape, mainly represented by SANYO, TOSHIBA, SONY, and ATL. In the stacked type, the positive electrode, the separator, the negative electrode, the separator, and the positive electrode are stacked in multiple layers. Weld all the positive electrodes together and lead them out, and the negative electrodes are also welded together lead out, mainly represented by ATL. Three) The working principle of lithium battery When charging, lithium ions are extracted from the positive electrode lattice under the drive of an electric field, pass through the electrolyte, and are embedded in the negative electrode lattice.　　When discharging, the process is just the opposite. Lithium ions return to the positive electrode, and electrons pass from the external circuit to the positive electrode to recombine with lithium ions. 4) Correct use of lithium battery 1) Charge according to the standard time and procedure, even if it is the first three times; 　　2) When the battery is too low prompt, you should try to start charging as soon as possible; 　　3) Activation of the lithium battery No special method is needed, and the lithium battery will be naturally activated during normal use. If you insist on using the popular'first three 12-hour long charge activation' method, it will actually not be effective. Therefore, all pursuits of 12 hours of ultra-long charging and automatic shutdown of lithium batteries are wrong. If you did something wrong in the past, please correct it in time, maybe it's not too late. 5) Lithium battery repair method 　　 There are a lot of information about the repair of lithium battery, but there may be few that are actually effective. Most of the articles do not describe the repair of lithium batteries in detail. In fact, the repair of lithium batteries is not difficult, but it is impossible to restore to the original state, but it can restore a part of its capacity, or the 18650 will be unusable. It is not difficult to restore the lithium battery to a usable state. Before the lithium battery is repaired, we need to prepare a multimeter, a rechargeable single-cell 18650 lithium battery charger, and a nickel-hydrogen battery charger (non-smart charger, if it is a smart charger, the 0V activation function is the best) , A lithium battery of normal physique. Lithium battery cells are used more. Strong light flashlights, handheld mobile fans, power banks, some radios, etc. Many small appliances in life use lithium batteries. The content in this article is only suitable for the repair of lithium batteries used by this type of monomer. It is not suitable for grouped lithium battery packs. For detailed operations, please refer to: How to repair lithium batteries. Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the types and differences of cylindrical lithium batteries? What are the advantages of cylindrical lithium batteries