What is the attention problem of lithium ion battery circuit design

▲Lithium-ion battery overcharge and overdischarge will affect the life of the battery. ▲Pay attention to the charging voltage and charging current of the lithium-ion battery. Then select the appropriate charging chip. ▲Pay attention to prevent overcharge, overdischarge, short circuit protection and other problems of lithium-ion batteries. ▲A lot of tests are required after the design. When a lithium-ion battery is charged, the electric potential applied to the two poles of the battery forces the compound of the positive electrode to release lithium ions, which are embedded in the carbon in which the molecules of the negative electrode are arranged in a sheet structure. During discharge, lithium ions are precipitated from the carbon of the sheet structure and recombine with the compound of the positive electrode. An electric current appears in the movement of lithium ions. Although the principle is simple, in actual industrial production, there are many practical issues to consider: the positive electrode material needs additives to maintain the activity of multiple charging and discharging, and the negative electrode material needs to be designed at the molecular structure level to accommodate more More lithium ions; the electrolyte filled between the positive and negative electrodes must not only maintain stability, but also have good conductivity to reduce the internal resistance of the battery. When the lithium-ion battery is in deep discharge, the charger must be required to have a pre-charging process to make the battery meet the conditions for fast charging; then, according to the fast charging speed recommended by the battery manufacturer, generally 1C, the charger will In constant current charging, the battery voltage slowly rises; once the battery voltage reaches the set termination voltage, the constant current charging is terminated, the charging current decays rapidly, and the charging enters the full charge process. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.