What is the attention problem of lithium battery circuit design

▲Lithium battery overcharge and overdischarge will affect the battery life. ▲Pay attention to the charging voltage and charging current of the lithium battery. Then select the appropriate charging chip. ▲Pay attention to prevent overcharge, overdischarge, short circuit protection and other problems of the lithium battery. ▲A lot of tests are required after the design. When a lithium battery is charged, the 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 very simple, in actual industrial processing, there are many practical problems to be considered: 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 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, which is generally 1C, the charger will keep the battery constant. When 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.