How to discharge lithium battery

The discharge process of lithium batteries is balanced during operation. In theory, the discharge rate and depth of discharge should be paid attention to when discharging lithium batteries. The depth of discharge is the ratio of the discharge capacity to the nominal capacity. The best reference target in usefulness is the voltage. How can a lithium battery discharge to make the depth of discharge more scientific? The general standard is: a lithium battery is discharged to between 2.75V and 3V. The battery can be charged. The taboo overdischarge of rechargeable batteries is prone to occur when the voltage is lower than 2.75V. From the internal structure of the overdischarge, one is that the electrolyte will be excessively volatilized, and the other is that the negative electrode of the lithium battery is overreacted. The change of the dielectric film leads to a decrease in the de-embedding capacity, which results in a permanent loss of capacity. Another useful parameter to clarify how a lithium battery discharges is the discharge rate. The discharge rate can also be converted into a discharge current. For example, if a 1800mAh battery is discharged at a rate of 0.1C, the discharge current is 180mAh, which is generally a little smaller. As well. Therefore, in the discharge of lithium batteries, from the perspective of the depth of discharge, we must pay attention to replenishing nutrients; from the perspective of the discharge current, we must pay attention to the continuous flow. Since lithium batteries do not have the recall effect of other secondary batteries, don't mind the issue of how lithium batteries can be activated by discharging them. When the lithium battery is idle, there is actually a discharge phenomenon, called self-discharge. Then, how does the lithium battery discharge during the self-discharge process? There are two ways of expression: one is that the negative electrode drives lithium ions to re-embed in the positive electrode, and the other is the electrode Dissolution, that is, the recovery reaction of ions on the positive electrode on metal lithium. The discharge process that occurs in these two ways is reversible, and most of the lithium battery capacity lost in self-discharge can be compensated by charging. From the point of view of the change in the self-discharge value, how does the lithium battery discharge? This is related to the ambient temperature where the lithium battery is located. Generally speaking, the monthly self-discharge rate at high temperature (55℃) is 10%, while the monthly loss at room temperature is only 2~3%. It can be seen that in theory, the key to the problem of how to discharge lithium batteries is to figure out the factors that affect the discharge of lithium batteries, and in usefulness, how to discharge lithium batteries is converted into detailed operations such as discharge time and discharge precautions. Enhancing the knowledge of the two aspects of how to discharge lithium batteries is conducive to longer-lasting use of batteries. 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: Analysis of the characteristics of commonly used rechargeable batteries