What are the important parts of the lithium battery structure?

Lithium battery structure composition, principle of lithium battery structure composition of lithium battery, principle of lithium battery. In our daily life, lithium batteries are very common. Lithium batteries have four key materials: positive electrode, negative electrode, separator, and electrolyte. Lithium battery is a kind of secondary (rechargeable) battery, which mainly relies on the insertion and separation of lithium ions between two electrodes. With the development of downstream industries such as power vehicles, the processing scale of lithium batteries has continued to expand. Lithium battery structure Lithium battery structure is mainly composed of the following five parts: 1. Cathode material: transition metal oxide or polyanionic compound, with layered or spinel structure, high electrode potential, stable structure, such as lithium cobalt acid, lithium manganese Acid, lithium iron phosphate, ternary materials, etc. 2. Cathode materials: flake graphite, structurally stable metal elements and metal oxides. The storage potential of lithium is close to that of lithium, such as graphite, central phase carbon microspheres, lithium titanate, etc. 3. Electrolyte: The organic solvent is dissolved in the lithium electrolyte to supply lithium ions, lithium electrolyte LiPF6, LiClO4, LiBF4, etc. Organic solvents are mainly composed of one or several mixtures of diethyl carbonate (DEC), propylene carbonate (PC), ethylene carbonate (EC), and dimethyl carbonate (DMC). 4. Separator: placed between the positive electrode and the negative electrode to prevent direct contact between the positive electrode and the negative electrode, allowing Li+ ions to pass through the polyene microporous membrane, such as polyethylene (PE), polypropylene (PP) or their composite membrane, PP/PE/ PP three-layer diaphragm. 5. Shell: battery shell, including aluminum shell, cover plate, tabs, insulation, etc. Principle of Lithium Battery Lithium battery is a kind of secondary battery that can be repeatedly charged and discharged by two materials. These two materials can be used as the positive and negative electrodes of the battery to insert and remove lithium ions. Lithium batteries rely on the transfer of lithium ions between the positive and negative electrodes to complete the battery's charge and discharge operations. When the battery is charged and discharged, lithium ions flow between the positive and negative electrodes. During discharge, the anode oxidizes and loses electrons, while the cathode reduces and gains electrons. When charged, the charge moves in the opposite direction. The principle structure of lithium batteries Lithium batteries are divided into lithium batteries and lithium batteries. Today's mobile phones and notebook computers use lithium batteries, often referred to as lithium batteries. Nowadays, lithium batteries are widely used in mobile phones and other products, and real lithium batteries have not been used in daily electronic products due to their huge dangers. The embedding and de-embedding of lithium ions is accompanied by the embedding and de-embedding of lithium ions and equivalent electrons (traditionally, the positive electrode is represented by embedding or de-embedding, and the negative electrode is represented by insertion or de-embedding). During the charging and discharging process, lithium ions are inserted/de-intercalated and thrust/de-inserted back and forth between the positive and negative electrodes, commonly known as rocking chair batteries. Lithium batteries have high energy density and high average output voltage. The self-discharge is small, less than 10% per month. There is no memory effect. The operating temperature ranges from -20 to 60. Excellent cycle performance, fast charging and discharging, charging power up to 100%, and high output power. long lasting. Without environmental pollution, they are called green batteries. Prefilling stage of lithium battery charging method. After the DC power supply is turned on and the lithium battery is detected, the charging chip is started to enter the pre-charging process. During this period, the charge controller charges the battery with a relatively small current to restore the battery voltage and temperature to a normal state. Constant current charging stage. In the initial stage of charging, the charging circuit charges the lithium battery with constant current. During constant current charging, the battery voltage will slowly rise, as long as the battery voltage reaches the set termination voltage, the constant current charging will be terminated, and then enter the constant voltage charging process. Constant voltage charging stage. During constant voltage charging, the charging current will gradually decrease. When it is detected that the charging current is lower than the set value or the charging time has exceeded the top and the charging stops, the charging controller will replenish the battery with a very small charging current at this time. 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: What is the difference between the new type of lithium battery non-woven diaphragm and the traditional lithium battery diaphragm?