Power battery management system for hybrid electric vehicle

The utility model provides a management system of a dynamic battery set for mix vehicle, which comprises two branch systems of a collection circuit board and a host control circuit board, wherein a single-group battery voltage collection module, a battery total voltage/ total current collection module of the collection circuit board connects with an I/O opening of the host control chip through a multi-circuit switching switch and an A/D transformation chip. The collection circuit board communicates with the host control circuit board through a CAN bus communication module, and an address interface of a non-easy losing data storage module of the control circuit board connects with the I/O opening of the host control chip CPU. A reading interface and a writing interface respectively connect with the reading interface and the writing interface of the host control chip CPU, and the I/O opening of the host control chip CPU respectively connects with a heavy current protection module, a temperature control module and an output terminal (CA) of a fault alarming module optical coupler. The utility model can promote the precision and speed of voltage collection of the system, the stability of data transmission in complex real operation mode of the whole vehicle, and the precision of single-group battery voltage collection and the anti-interference performance of the voltage collection process.