Battery system, method of controlling battery system, and energy storage system including the same

A method of controlling a battery system that comprises a plurality of slave BMSs each including a switch, the method comprising:

• generating a pulse signal based at least in part on an input to the switch;
• receiving the pulse signal from the switch;
• determining an operation mode based at least in part on a pulse width of the pulse signal;
• assigning an identifier (ID) of the slave BMS according to the number of generated pulse signals;
• and
• displaying the ID of the slave BMS.

A power storage system, comprising:

• a battery system comprising:
• i) a plurality of slave BMSs configured to control a battery tray and ii) a master BMS configured to control the slave BMSs;
• wherein the power storage system is connected to a power generation system, a grid, and a load,
• wherein the power storage system is configured to supply power to the load from at least one of the battery system, the power generation system, or the grid, and
• wherein each of the slave BMSs comprises:
• a switch configured to generate a pulse signal based at least in part on an input;
• a display configured to display a status of the battery tray;
• and
• a controller configured to:
• i) determine an operation mode of the slave BMS based at least in part on a pulse width of the pulse signal, ii) assign an identifier (ID) of the slave BMS based at least in part on the number of generated pulse signals, and iii) control the display to display the ID of the slave BMS.