Introduction Of Lithium Ion Battery Protection Board

- Jul 04, 2020-

The lithium-ion battery protection board is suitable for the charge and discharge protection of 10 strings of lithium-ion battery packs. When fully charged, it can ensure that the voltage difference between the individual cells is less than the set value (generally 20mV), to achieve uniform charging of the individual cells of the battery pack, and effectively improve the charging effect in series charging mode. At the same time, it detects the over-voltage, under-voltage, over-current, short-circuit, and over-temperature status of individual cells in the battery pack to protect and extend the battery life. Under-voltage protection prevents each single battery from being damaged due to over-discharge during discharge. The product can work stably and reliably for a long time in the ambient temperature range of -20℃~+60℃.


Technical parameter:


Balance current: 80mA (when VCELL=4.20V)

Balance starting point: 4.180.03V lithium-ion battery protection board schematic diagram Overcharge threshold: 4.250.05V (4.300.05V optional)

Overcharge delay: 75mS

Overcharge release: 4.050.05V

Over discharge threshold: 2.900.08V (2.400.05V optional)

Over discharge delay: 5mS

Over-discharge release: disconnect the load, and the voltage of each cell is higher than the over-discharge threshold.

Overcurrent threshold: 30A (according to customer choice)

Overcurrent release: disconnect load release.

Over-temperature protection: there is an interface, and a recoverable temperature protection switch needs to be installed.

Working current: 15A (according to customer selection) Static power consumption: 0.5mA.

Short circuit protection function: able to protect, self-recovery after disconnecting the load.


Important functions: overcharge protection function, over discharge protection function, short circuit protection function, over current protection function, over temperature protection function, balance protection function.


The meaning of the interface: the charging port and the discharging port of the board are independent of each other. The two have a positive pole, B- is the negative pole of the battery, C- is the negative pole of the charging port; p- is the negative pole of the discharging port; B-, p-, C -The pads are through-hole type, and the pad hole diameter is 3mm; each battery charging detection interface is output in the form of a DC pin holder.