The whole process of 18650 lithium battery charging and discharging

Analysis of the basic principle of lithium battery charging and discharging: The working principle of lithium battery refers to its charging and discharging principle. When the battery is charged, a lithium battery is created at the positive stage of the rechargeable battery, and the resulting lithium battery moves to the negative stage according to the lithium battery electrolyte. Carbon as the negative stage has a microporous plate layer structure, and the lithium battery that reaches the negative stage is placed in the carbon layer of the microporous plate. The more lithium batteries are inserted, the higher the battery charge capacity. Similarly, when the rechargeable battery is charged and discharged (that is, when you use a rechargeable battery), the lithium battery embedded in the negative carbon layer goes out and moves to the positive again. The more lithium batteries that return to anodization, the higher the charge and discharge capacity. Generally speaking, the battery capacity refers to the charge and discharge capacity. During the whole process of charging the lithium battery, the lithium battery moves from positive stage → negative stage → positive stage. If the lithium battery is compared to a rocking chair, the two sides of the rocking chair are the two aspects of rechargeable batteries. The lithium battery is like an excellent player, running back and forth on both sides of the rocking chair. Therefore, authoritative experts gave lithium batteries a lovely name: rechargeable rocking chair batteries. The whole process of charging and discharging the 18650 lithium battery; the charging operation of the lithium battery is divided into two stages. The first stage is to charge the battery with a constant current power supply. When the battery voltage is less than V, the charging head will charge the battery with a constant current power supply. The second stage is the charging of the constant current source battery. When the battery voltage reaches V, because of the characteristics of lithium batteries, if the working voltage is higher, it will be destroyed. The charging head will fix the working voltage at V, and the current will gradually decrease. When the current is reduced to a certain value (generally 1/10 of the set current), the battery charging power supply circuit will be disconnected, and the battery charging progress indicator light will flash. Excessive charging of lithium batteries can cause permanent damage to the positive and negative. Excessive charging and discharging will cause the negative carbon sheet structure to collapse, and the collapse will cause the lithium battery to be unable to be inserted in the whole process of battery charging; too much battery charging causes too many lithium batteries to be placed in the negative carbon structure, in which Some can't be released anymore. Some charging heads are completed according to cheap planning methods, and the linearity is not good, which is very easy to cause abnormal battery charging and even destroy the rechargeable battery. When choosing a charging head, try to choose a well-known brand of 18650 lithium battery charging head as much as possible, which can ensure quality and quantity, after-sales maintenance services, and increase the service life of the rechargeable battery. Well-known brands ensure that the 18650 lithium battery charging head has four maintenance purposes: overcurrent protection, overcurrent protection, overvoltage protection, and rechargeable battery reverse connection maintenance. Overcharge maintenance: When the charging head overcharges the lithium battery, in order to better guard against the increase in internal working pressure due to temperature rise, the battery charging must be stopped. Therefore, the protection device has to monitor the battery voltage. When the rechargeable battery is over-charged, the over-charge protection function is activated and the battery charging is terminated. Overcharge and discharge maintenance: In order to better guard against the overcharge and discharge of lithium batteries, when the working voltage of the lithium battery is less than its overcharge and discharge working voltage test point, the overcharge and discharge maintenance is activated, the charge and discharge are terminated, and the rechargeable battery is maintained Shutdown mode with low quiescent data current. Overcurrent and overcurrent protection: When the charge and discharge current of the lithium battery is too large or a short-circuit fault occurs, the protection device will activate the overcurrent protection function. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.