What are the consequences of parallel charging of lithium batteries with different capacities on the protection board?

by:CTECHi     2021-08-03

As the name suggests, the protection board is to protect the lithium battery and lithium battery pack. What kind of protection function does the lithium battery protection board have? The lithium battery protection board has major protection functions such as overcharge protection, overcurrent protection, overdischarge protection, and equalization for lithium batteries. The use of lithium batteries includes parallel and series, and the use of single cells. We all know that when lithium batteries are used in series, the voltage of the battery is changed when the resistance is unchanged, while the capacity of the battery is changed by the parallel use. So what are the consequences of parallel charging of lithium batteries with different capacities with lithium battery protection boards? Today, Guoren Chuangfa will learn this knowledge with everyone.

1, if only two sections are used, there is generally no danger.

2, if two lithium batteries are charged in parallel, a full charge of 1500mAH and an overcharge of 1300mAH may occur, which will affect the life of the battery. If the 1300mAH battery is fully charged, the charger stops charging, which will have no effect on both batteries. The 1500mAH battery can be used as 1300mAH.

3, it depends on the electrical appliances, if it is a lithium iron phosphate battery, if the protection scheme is good, the life expectancy will not be affected. If multiple batteries are used in this way, the consistency of battery capacity and internal resistance must be ensured in order to ensure the service life of the battery. Otherwise, the battery with a small capacity will be overcharged and overdischarged, which will seriously affect the service life of the battery.

Lithium battery industry chain enterprise promotion, lithium grid (li-b.cn) welcomes contributions. share to:
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