Share the remedy for 18650 lithium battery after excessive discharge
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2023/05/19 11:10:37
Most people do not understand the battery, do not know how to use it correctly, accidentally put lithium battery, now most of the electric bicycle above the use of 18650 lithium battery pack. Some people like to ride to completely out of power in charging, which constitutes the excessive discharge of the battery, strictly affect the use of lithium battery life, but some people also unaware that the time is not long lithium battery is not used, but also suspect that the battery is not good, in fact, is not their understanding of the battery, no good maintenance of the composition. If you assume too severe, directly lead to not fill the point may have. Excessive charging and discharging of lithium-ion batteries can cause permanent damage to the positive and negative electrodes. Excessive discharge leads to a depression in the negative carbon laminar structure, and the depression will form the 18650 lithium battery charger. It is hoped that we should pay attention to maintenance when using 18650 lithium battery.
Fortunately, 18650 lithium battery unlike nickel-metal hydride battery and nickel-cadmium battery are not the same, 18650 battery does not have the memory of charging and discharging, 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 is a way to compensate when a battery is overdischarged. The finished 18650 lithium battery with a single maintenance board in the packaging process are planned with an overdischarge maintenance circuit, the overdischarge maintenance circuit board is to prevent the overdischarge of 18650 lithium ion battery, when the battery voltage is lower than its overdischarge voltage detection point, that is, activate the overdischarge maintenance, continuous discharge, and keep the battery 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 component will activate the overcurrent maintenance function. If the discharge is excessive and not immediately charged, 18650 lithium battery itself voltage is too weak, the maintenance circuit board will be in the cut-off situation, unable to complete the charging process. What are the ways to deal with it? I will teach us a way to compensate for the excessive discharge of 18650 lithium battery. Take a look below:
Method of compensation:
The maintenance board of 18650 lithium battery is separated from the battery, and a mobile phone charger with an output voltage of 5V is used. The two positive and negative electronic wires of the charger are directly connected to the positive and negative poles of 18650 lithium battery for charging. But there is one point to pay attention to, that is, the positive and negative poles of the charger and the positive and negative poles of the 18650 lithium battery should be lined up, or the direct short-circuit incineration, assuming that the positive and negative poles can not be observed to distinguish, you can use a multimeter to measure the positive and negative poles at which end, after connecting to the battery charge 1-3 minutes, not too long, because of the removal of the maintenance board, the battery did not overcharge maintenance, When the 18650 battery voltage rises after a few minutes of charging, the maintenance circuit will turn itself open. Then you can go back to normal charging.
"18650 lithium battery" is a kind of battery made of lithium metal or lithium alloy as anode material and using non-aqueous electrolyte solution. Lithium metal battery was first proposed and studied by GilbertN Lewis in 1912. In the 1970s, M.S. hittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, preservation and application of lithium metal require 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 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 way, very useful,
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