What knowledge should be mastered for lithium battery discharge?

What knowledge should be mastered for lithium battery discharge? What little common sense should be grasped for lithium battery discharge? In theory, the key to solving the problem of lithium battery discharge is to find out the factors that affect lithium battery discharge. How to convert lithium battery discharge into discharge time during use? Specific operations such as discharge care items. So, what common sense should be grasped when charging and discharging lithium batteries? Talk about the little makeup of energy-saving appliances. What little common sense should you be careful about when discharging lithium batteries? At the beginning of charging, you should first test the voltage of the battery to be charged. Assuming the voltage is lower than 3V, pre-charge should be performed first. The charging current is 1/10 of the set current, generally around 0.05c. When the voltage rises to 3V, it enters the standard charging process. The standard charging process is as follows: constant current charging is carried out by setting the current. When the voltage of the lithium battery rises to 4.20v, it becomes constant voltage charging, and the charging voltage is maintained at 4.20v. At this time, the charging current gradually decreases. When the current drops to 1/10 of the set charging current, the charging is completed. The charging current of lithium batteries is generally set between 0.2c and 1C. The greater the current, the faster the charging, and the greater the heating of the battery. In addition, if the battery charging current is too large, the capacity will not be full, because the electrochemical reaction inside the battery takes time. Just like pouring beer, pouring too fast can cause foam and dissatisfaction. 1. The discharge current should not be too large. Overcurrent may cause internal heating of the lithium battery and cause permanent damage; 2. Do not over discharge. Lithium batteries are most afraid of over-discharge. 3. Multiple obstructions to deep charge and discharge: Lithium batteries have almost no memory. Many people are using lithium batteries or digital products lithium batteries, and they do not have the power to use (maintenance board repair). Then, in the eyes of many people, this is also a method To activate the battery; 4. Responsible for the charging and discharging requirements of the charger current and general current load in the prescribed plan: too high current load can easily cause internal short circuit of the battery, which will damage the lithium ion and cause circuit safety risks; 5. About the lithium battery The temperature is extremely active. If it is used for a long time below freezing point, it may have a great impact on the life and damage of the battery. However, if the battery is left in an overheated environment for a long time, the life of the battery will be greatly reduced, and the most serious is the explosion caused by the increase in internal pressure. Even if there is no explosion, the battery will be scrapped at high temperatures. Lithium battery charging and discharging requirements: Lithium battery charging: According to the structure and characteristics of the lithium battery, the maximum charging connection voltage is 4.2v, and it cannot be overcharged, otherwise the battery will be scrapped due to excessive lithium ions in the positive electrode. The charging and discharging requirements are relatively high, and it can be charged with a special constant current and constant voltage charger. In general, constant current charging is converted to constant voltage charging after charging to 4.2v/junction. When the constant voltage charging current drops to less than 100mA, the charging should be continued. Charging current (mA)u003d0.1~1.5 times battery capacity (such as 1350mAh battery, its charging current can be controlled between 135~2025mA). The traditional charging current is about 0.5 times the battery capacity, and the charging time is about 2 to 3 hours. Lithium battery discharge: Due to the internal structure of lithium batteries, all lithium ions cannot move to the positive electrode during discharge. In order to ensure that lithium ions can be easily inserted into the channel during the next charge, lithium ions must maintain a certain negative position. Otherwise, the battery life will be shortened accordingly. In order to ensure that some lithium ions remain in the graphite layer after discharge, it is necessary to severely restrict the discharge to the lowest voltage, that is, the lithium battery cannot be over-discharged. The discharge connection voltage is generally 3.0V/node, and the minimum voltage must not be lower than 2.5V/node. 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 post: Four challenges faced by the development of all-solid-state lithium batteries