Battery management system and automatic battery management unit address allocation method

The invention relates to a battery management system and a battery management unit address automatic allocation method, all battery management units in the same battery cluster are connected in series, a first battery management unit located at the head end is connected with a power supply module, and when the power supply module supplies power to the battery cluster management units and the firstbattery management unit, the first battery management unit is connected with the power supply module. All the battery management units in the battery cluster are sequentially provided with corresponding fixed addresses through the battery cluster management units according to the series connection sequence, automatic address allocation of the battery management units is achieved through a hardware platform and a software function, and the allocated fixed addresses are gradually increased according to the power-on sequence of the battery management units; one-to-one correspondence between thefixed addresses of the bat