System and method for uninterruptedly upgrading software of battery management system

The invention provides a system and a method for uninterruptedly upgrading software of a battery management system, the system for uninterruptedly upgrading the software of the battery management system comprises the battery management system, and the battery management system comprises a master control module, a master control module and a slave control module; the master control module comprises an upgrading folder, the master control module is used for sending an instruction, and the upgrading folder is used for storing an upgrading file; the master control module is in communication connection with the master control module, the master control module comprises at least two master control partitions, and the master control partitions are used for forming backup redundancy; the slave control module is in communication connection with the master control module, the slave control module comprises at least two slave control subareas, and the slave control subareas are used for forming backup redundancy so as t