-What are the types of damages to the lifespan of lithium-ion batteries caused by overcharging and discharging?

What are the types of damages to the lifespan of lithium-ion batteries caused by overcharging and discharging?
author:enerbyte source:本站 click285 Release date: 2023-06-19 08:38:37
abstract:
The so-called overcharging, as the name suggests, refers to overcharging the battery, which means continuing to charge it after it is fully charged. After being fully charged, continuing to charge to a certain level can cause the gas generated by the decomposition of the ele...

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The so-called overcharging, as the name suggests, refers to overcharging the battery, which means continuing to charge it after it is fully charged.

After being fully charged, continuing to charge to a certain level can cause the gas generated by the decomposition of the electrolyte in the lithium-ion battery to expand and even smoke. In this way, the battery cannot function properly. Just like a balloon, if it is filled with gas and continues to charge, the balloon will eventually burst.

Some customers, in order to enhance the aesthetics of their products or meet the requirements of product mold design, often only purchase battery cells and design their own protective plates, which is also prone to overcharging. On the one hand, due to their low professional level of batteries and outdated experimental equipment, there are discrepancies in the designed overcharge protection parameters; On the other hand, due to the different quality of cells processed by different cell manufacturers and the different lithium-ion materials used, if they cannot judge, they always use the same process to design overcharge protection parameters, which can also lead to errors and overcharging.

Of course, overcharging once or twice does not cause much damage to the battery and the user experience is not deep. However, over time and with more overcharging times, the battery will undergo qualitative changes due to quantitative changes, until it cannot be charged or discharged, and the results can be imagined.

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