The invention relates to a lithium ion battery pack module with a communication interface. The lithium ion battery pack is composed of battery cells, a protection circuit board and a packaging material; the protection circuit board is provided with a battery pack protection circuit, a monitoring and collection circuit capable of collecting battery voltage, capacity, percentage, temperature and current information, a microprocessor, an RS485 interface conversion circuit and a power source conversion circuit which provides a power source for the protection circuit board; the RS485 interface conversion circuit is wirelessly connected with a back-ground server through an RS485 communication interface; an OZ8957 integrated chip is the core component of the battery pack protection circuit; the monitoring and collection circuit comprises a voltameter chip which is connected in series with an integrated sampling resistor; and the voltameter chip carries out battery electric quantity calculation and temperature display through measuring the magnitude of current flowing through the sampling resistor. The lithium ion battery pack module has the advantages of reasonable components, easiness in use and high reliability, and can conveniently monitor a lithium ion battery pack real time.