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What are the lithium battery protection board and battery protection system?

  The lithium battery protection board can protect the series-parallel battery pack from charging and discharging, and can detect the overvoltage, overcurrent, overtemperature, undervoltage and short circuit status of each single cell in the battery pack, thereby prolonging the service life of the battery and avoiding battery life. Damaged by overdischarge. The lithium battery protection board is an indispensable part of the lithium battery. The lithium battery protection board also has a balance protection function, which can be divided into energy consumption mode and energy conversion mode. Energy equalization is when one cell has high power or high voltage across a series of cells, and the excess power is dissipated by resistance. Energy consumption equalization is divided into charge equalization, voltage fixed-point equalization, and static automatic equalization.


Equalization during charging:

When the voltage of any battery is higher than all average voltages during the charging process, the protection board activates the equalization protection.


Voltage fixed-point equalization:

The lithium battery protection board starts to equalize from a certain voltage point, only when the battery is charged, and the equalization time is short.


Static automatic equalization:

In the process of charging or discharging, even if the battery is in a static state, when the voltage is inconsistent, the lithium battery protection board will start equalization protection until the voltage is consistent.


Energy conversion is to convert a large-capacity battery into a small-capacity battery in the form of energy storage, and check whether the capacity of the battery is balanced, which can be divided into time-capacity balance and fixed-point capacity balance.

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