The embodiment of the application provides a kind of
energy storage system and
energy storage equipment, belong to
energy storage technical field, comprising: master control module, master control module is configured to send instruction
signal;Power conversion module;Battery management module;Extension module;Wherein, power conversion module, battery management module and extension module are all connected with master control module by
EtherCAT bus, to constitute
EtherCAT network, power conversion module, battery management module and extension module are all used to obtain instruction
signal by
EtherCAT network.The energy storage
system provided in the application, power conversion module, battery management module and extension module are connected into EtherCAT network with master control module by EtherCAT
bus.After master control module issues instruction
signal, since each module is in the same level, therefore, the time interval of each module receiving instruction signal is short, and the
data synchronization between modules is high.