Energy storage system

A method of controlling an energy storage system, the energy storage system including:

• a control container including:
• a master controller;
• a bank battery management system (BBMS);
• and
• a battery system controller (BSC) connected to the master controller and the BBMS;
• a battery container including:
• a plurality of batteries;
• a slave controller;
• and
• a rack battery management system (RBMS);
• and
• a watering container fluidly connected to the first battery container,
• wherein the method comprises:
• receiving by the BSC, via a first communication line, from the slave controller, first battery information for the plurality of batteries;
• receiving, by the BSC, via a second communication line, from the RBMS through the BBMS, second battery information for the plurality of batteries;
• determining, by the BSC, based on the first battery information, whether a fire extinguishing fluid should be applied;
• in response to the BSC determining that the fire extinguishing fluid should be applied, instructing by the BSC to the master controller to send to the watering container, via a third communication line, instructions to cause the watering container to apply the fire extinguishing fluid to the plurality of batteries;
• determining, by the BSC, whether the first communication line has failed;
• in response to determining, by the BSC, that the first communication line has failed, determining, by the BSC, based on the second battery information, whether the fire extinguisher fluid should be applied;
• and
• in response to determining, by the BSC, that the fire extinguishing fluid should be applied, instructing by the BSC to the master controller to send, via the third communication line, instructions to cause the watering container to apply the fire extinguishing fluid to the plurality of batteries.