Battery management system, acquisition circuit thereof and new energy automobile

The utility model discloses a battery management system, an acquisition circuit thereof and a new energy automobile. The acquisition circuit of the battery management system comprises a special application integrated circuit chip which comprises a plurality of general input and output interfaces, a plurality of voltage acquisition interfaces and a communication interface; the module cell monomer voltage acquisition interface is used for acquiring module cell monomer voltage; a high-voltage acquisition interface and a resistance voltage division circuit; the resistance voltage division circuit is connected between the high-voltage acquisition interface and the general input/output interface; a module temperature acquisition interface and a multiplexing switch chip; the multiplexing switch chip is connected between the module temperature acquisition interface and the general input/output interface; and the communication module and the main control chip are isolated. According to the embodiment of the utility mo