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Author ：Iflowpower – Portable Power Station Supplier
When the lithium-ion battery is overcharge, the charging voltage exceeds the set voltage, such as the battery rated voltage 3.7V, full electric voltage 4.2±0.
05V. That is, the highest voltage is 4.25V, and it is called over 4.
25V. What is the harm of the battery? At the time of charge, the battery voltage increases rapidly with the polarization, which can cause irreversible variation of the positive electrode active material structure and the analysis of the electrolyte, and a large amount of gas, which releases a large amount of heat, and adds a sharp new battery temperature and internal pressure. The diaphragm is melted or contracted, causing the positive and negative electrode material to contact short circuit, there is a hidden danger such as explosion, combustion.
Over-discharge: Over-discharge means that the voltage reaches the rated voltage and continuous discharge, such as the three-dimensional ion battery rated discharge voltage 3.2V, lower than 3.2V, continuous discharge is overlapping.
What harm is there? After the battery is put on, the voltage reaches a certain value, the continuous discharge can cause over-discharge, battery over-discharge may bring catastrophic consequences, especially large current, or repeatedly overlapping the battery Greater. In general, the over-discharge will increase the internal pressure of the battery, and the positive and negative active substance is reversible, the electrolyte analysis, the negative electrode lithium deposition, the resistance increases, even if charging can only partially restore, the capacity will also be distinctable. How do you have alert battery over or over? First: Using a lithium ion battery dedicated protective plate (BMS) to use the battery, the protective plate can protect the battery but charge or over, the smart version can also set the charging voltage and discharge voltage, which can better protect the battery.
Second: Using a lithium-ion battery charger, do not use fast charge. Three: The battery voltage reaches the voltage set by the protector, the protective plate will be powered on to protect the battery, but the lithium-ion battery will fall, the voltage increases, which will be higher than the voltage set by the protector. I can't use it at this time.
Multiple use will cause irreversible damage to the battery. The life of the lithium-ion battery has been fixed. First, some objective facts cannot be changed, that is, the life of the mobile phone battery, it is a bit similar to people, people are tossing too much, can live less, life habits can live more than a few years.
The lithium-ion battery is also like this. It usually uses it for a few years, and it is very short. As people 's life is the same, the folding will always have an end day, and the lithium-ion battery is like this.
As time goes, even if it doesn't use it, it will slowly aging. And still irreversible age, so if the battery capacity has been lost, there is no way to restore the status of the new mobile phone. The working principle of the lithium-ion battery is simple, charging, and the discharge is actually the chemical reaction inside the battery, whether it experience the ion from the negative electrode to the positive electrode or from the motion to the negative electrode, the compound constituting the positive and negative electrode is reactive Conductive conversion, the loss of the battery is actually reduced by ion activity.
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