What little knowledge should I pay attention to when discharging lithium batteries?

Some tips for lithium iron phosphate batteries can improve low-temperature performance in winter. What kind of little knowledge are required to control the discharge of lithium batteries? In theory, the focus of lithium battery discharge is to find out the factors that affect the discharge of lithium batteries. So, what common sense should the charging and discharging of lithium batteries be controlled? Talk about power-saving little makeup. What little knowledge should be paid attention to when discharging lithium batteries? At the beginning of charging, the voltage of the battery to be charged should be tested first. If the voltage is lower than 3V, the pre-charging should be stopped first. The charging current is 1/10 of the set current. After the voltage rises to 3V, it enters the standard charging process. The standard charging process is: set the current to stop constant current charging, when the lithium battery voltage rises to 4.20v, change to constant voltage charging, and maintain the charging voltage at 4.20v. At this time, the charging current gradually decreases, and when the current drops to 1/10 of the set charging current, 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 heat of the battery. In addition, due to the electrochemical reaction inside the battery, the charging current is too large and the capacity is insufficient. Just like pouring beer, pouring too fast will cause bubbles to appear, causing dissatisfaction. 1. The discharge current should not be too large, otherwise it will cause the lithium battery to heat up and cause permanent damage. 2. It cannot be over-discharged. Lithium batteries are most afraid of over-discharge. Once the discharge voltage is lower than 2.7V, the battery may be scrapped; 3. Prevent frequent deep charge and discharge: Lithium batteries have no memory, and many people are using digital products, lithium electric cars or lithium Love to use the power and no longer leave (maintenance board repair), and then, in the eyes of many people, this is also a method to activate the battery; 4. When charging and discharging, the current of the charger and the general current load of the electrical appliances are required to be in the specified Within the range: Excessive current load can easily cause a short circuit inside the battery, which will damage the lithium ion and lead to circuit safety; 5. The temperature of the lithium battery is extremely sensitive. If it is used for a long time below the freezing point, it may affect the life of the battery. It constitutes a great influence and harm. Moreover, being in an overheated environment for a long time will greatly reduce the service life of the battery, and the internal pressure caused by the serious explosion will increase. Even if there is no explosion, the battery will quickly become obsolete at high temperatures. Lithium battery charging and discharging requirements: Lithium battery charging: According to the structural characteristics of the lithium battery, the maximum charge stop voltage is 4.2v, and it cannot be overcharged, otherwise the battery will fail due to excessive lithium ions being taken away from the positive electrode. The charging and discharging requirements are relatively high, and special constant current and constant voltage chargers can be used for intermittent charging. Constant current charging is generally converted to constant voltage charging after 4.2v/node. When the constant voltage charging current drops to less than 100mA, intermittent charging should be performed. Charging current (mA)u003d0.1~1.5 times the battery capacity (such as 1350mAh battery, the charging current can be controlled between 135~2025mA). The normal charging current can be about 0.5 times the battery capacity, and the charging time is about 2-3 hours. Lithium battery discharge: Due to the internal structure of the lithium battery, all lithium ions cannot move to the positive electrode during the discharge process. It is necessary to retain some lithium ions on the negative electrode to ensure that lithium ions can be inserted into the channel smoothly during the next charge. Otherwise, the battery life will be shortened accordingly. In order to ensure local lithium ions in the graphite layer after discharge, it is necessary to strictly limit the minimum voltage at which the discharge is terminated, that is, the lithium battery cannot be discharged. The discharge termination voltage is generally 3.0V/node, and the minimum should not be lower than 2.5V/node. The length of the battery discharge time is related to the capacity and discharge current of the lithium battery. Battery discharge time (hours) u003d battery capacity/discharge current. The discharge current (mA) of lithium batteries should not exceed 3 times the battery capacity. (Such as 1000mAH battery, the discharge current is strictly controlled within 3A) Otherwise, the battery will be damaged. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Important advantages of lithium iron phosphate batteries