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What are the lithium battery protection board and battery protection system

Date:2020-09-27Views:583

The lithium battery protection board can protect the series and parallel battery packs from charging and discharging, and can detect the over-voltage, over-current, over-temperature, under-voltage, and short-circuit status of each single cell in the battery pack, thereby extending the service life of the battery and avoiding the battery Damaged by over discharge. Lithium battery protection board is an indispensable part of 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 consumption balance means that a battery has high power or high voltage in a series of batteries, and the excess power is lost by resistance. Energy consumption balance is divided into charge balance, voltage fixed-point balance, and static automatic balance.

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

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

Static automatic balance:
In the process of charging or discharging, even if the battery is in a static state, when the voltage is not consistent, the lithium battery protection board will start the 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. It can be divided into time capacity balance and fixed-point capacity balance.

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