Share the remedy for 18650 lithium battery after excessive discharge
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2023/09/28 09:42:20
Most people do not understand the battery, do not know how to use it correctly, and accidentally give the lithium battery too much, and now most of the electric bicycles use the 18650 lithium battery pack. Some people like to ride to completely out of power in charging, which constitutes the battery excessive discharge, strictly affect the use of lithium battery life, but some people still do not know, the time is not long lithium battery will not be used, but also suspect that the battery is not good, in fact, it is their own understanding of the battery is not well maintained. If it is too severe, it may directly lead to not filling the point. Overcharging and discharging lithium-ion batteries can cause permanent damage to the positive and negative electrodes. Excessive discharge causes the negative carbon laminar structure to show a depression, and the depression will form the 18650 lithium battery charger 18650 lithium battery charger, I hope we should pay attention to maintenance when using 18650 lithium battery.
Fortunately, 18650 lithium batteries are not like nickel-metal hydride batteries and nickel-cadmium batteries are not the same, 18650 batteries have no charge and discharge memory, do not have to empty the remaining power before charging, convenient use with charge can be used with charge, does not affect the life and capacity. So there are ways to compensate when a battery overcharges. The finished 18650 lithium battery is planned with an overdischarge maintenance circuit in the packaging process. The overdischarge maintenance circuit board is to prevent the overdischarge of the 18650 lithium-ion battery. When the voltage of the battery is lower than the overdischarge voltage detection point, the overdischarge maintenance is activated, continuous discharge is discharged, and the battery is kept in the standby mode of low static current. Overcurrent and short circuit maintenance: When the discharge current of the lithium-ion battery is too large or short circuit occurs, the maintenance device will activate the overcurrent maintenance function. If the overdischarge and not immediately charged, the 18650 lithium battery itself voltage is too weak, the maintenance circuit board will be in the cutoff situation, can not complete the charging process. What is the way to deal with it? I teach us a way to compensate for the excessive discharge of 18650 lithium batteries. Please take a look below:
Compensation method:
Separate the maintenance board of the 18650 lithium battery from the battery, use a mobile phone charger with an output voltage of 5V, and connect the two positive and negative electronic wires of the charger directly to the positive and negative poles of the 18650 lithium battery to charge. But there is one thing to note, that is, the positive and negative electrodes of the charger and the positive and negative electrodes of the 18650 lithium battery should be aligned, otherwise directly short-circuit incineration, assuming that it is impossible to observe the difference between positive and negative electrodes, you can use a multimeter to measure which end of the positive and negative electrodes, charge the battery for 1-3 minutes after connecting, not charging too long, because the maintenance board is removed, the battery is not overcharged maintenance, When the 18650 battery voltage rises after a few minutes of charging, the maintenance circuit will turn itself open. Then normal charging can resume.
"18650 lithium battery" is a class of lithium metal or lithium alloy as a negative electrode material, the use of non-aqueous electrolyte solution of the battery. In 1912, lithium metal batteries were first proposed and studied by GilbertN Lewis. In the 1970s, M.S. hittingham proposed and began to study lithium-ion batteries. Due to the very active chemical characteristics of lithium metal, the processing, preservation and application of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, 18650 lithium batteries have now become the main stream. It is widely used in: instruments, medical devices, consumer electronics, smart water meters, testing instruments, POS machines, laptops and other products.
The above is about 18650 lithium battery after excessive discharge compensation method, read the article friends do not understand it, assuming that the next time your lithium battery is also excessive discharge, may wish to try according to my method, very useful,
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