Daily maintenance of explosion-proof flashlight explosion-proof lithium battery

Daily maintenance of explosion-proof flashlight explosion-proof lithium battery In explosion-proof flashlight, the performance of explosion-proof lithium battery is related to the lighting time of explosion-proof flashlight, so a good explosion-proof lithium battery is essential to an excellent explosion-proof flashlight, just like a good horse with a good saddle One reason, then how do we maintain such an important explosion-proof lithium battery in our daily life? The positive electrode material of lithium-ion batteries is usually composed of lithium active compounds, while the negative electrode is carbon with a special molecular structure. The main component of common positive electrode materials is LiCoO. When charging, 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. The movement of lithium ions generates an electric current. Although the chemical reaction principle is very simple, in actual industrial production, there are many practical issues that need to be considered: the material of the positive electrode needs additives to maintain the activity of multiple charging and discharging, and the material of the negative electrode needs to be designed at the molecular structure level. To accommodate more lithium ions; the electrolyte filled between the positive and negative electrodes, in addition to maintaining stability, also needs to have good conductivity to reduce the internal resistance of the battery. The capacity of lithium-ion batteries will still decrease after repeated charging and discharging, and the reasons are complex and diverse. It is mainly the changes in the positive and negative materials themselves. From the molecular level, the hole structure on the positive and negative electrodes will gradually collapse and block; from a chemical point of view, it is the active passivation of the positive and negative materials, and side reactions appear to be stable. Other compounds. Physically, the positive electrode material will gradually peel off. In short, the number of lithium ions that can move freely during the charging and discharging process is reduced. Overcharge and overdischarge will cause long-term damage to the positive and negative electrodes of lithium-ion batteries. From the molecular level, it can be intuitively understood that overdischarge will cause the negative electrode carbon to excessively release lithium ions and cause its lamellar structure to collapse. Overcharging will force too much lithium ions into the carbon structure of the negative electrode, and some of them will no longer be able to be released. This is also the reason why lithium-ion batteries are usually equipped with charge and discharge control circuits. *Later, my opinion on battery maintenance is:. There is no need to deliberately ensure that the battery is discharged and recharged every time;. A deep charge and discharge under the control of the protection circuit can be done for a period of time to correct the battery power statistics, but this will not Increase the actual capacity of your battery. . Batteries that have not been used for a long time should be placed in a cool place to reduce the speed of their internal self-passivation reaction. The protection circuit is also unable to monitor the self-discharge of the battery. The battery that has not been used for a long time should be charged with a certain amount of electricity to prevent the battery from being over-discharged during storage and causing excessive discharge damage.