The application relates to the technical field of battery management, in particular to an address automatic
allocation method, an
energy storage system, an
energy storage unit and a storage medium. The method is applied to a
battery cell unit, at least one
battery cell unit is sequentially arranged along a one-dimensional direction, each
battery cell unit is provided with an input interface and an output interface, the input interface of each battery
cell unit is connected with the output interface of the previous battery
cell unit, and the output interface of each battery
cell unit is connected with the input interface of the next battery cell unit; the method comprises the following steps: a
communication link is established with adjacent battery cell units; an addressing rule is configured, and an addressing task mechanism is started to enable the battery cell units to successfully analyze addresses; whether any data is received by the input interface of the battery cell unit is detected according to a preset first period, if yes, the battery cell unit is determined as a slave; last address information sent by the previous battery cell unit is received, a current address of the battery cell unit is generated according to a preset address generation rule, current address information is generated according to the current address, and the current address information is sent to the next battery cell unit.