What’s for Lithium battery protection board(PCM/BMS)?

The Lithium Battery protection board is the charge and discharge protection for the series lithium Battery Pack. When fully charged, it can ensure that the voltage difference between the single cells is less than the set value (generally ±20mV), realize the equal charging of the single cells of the Battery Pack, and effectively improve the charging effect in the series charging mode. At the same time, it detects the overvoltage, undervoltage, overcurrent, short circuit and overtemperature status of each single cell in the battery pack to protect and prolong the battery life. Under-voltage protection prevents each single cell from being damaged due to over-discharge when it is being discharged.