Battery management device for temperature control of energy storage system and method of controlling temperature of energy storage system

A battery management system comprising:

• a battery monitoring unit configured to monitor a temperature and voltage of a battery and determine whether an abnormality occurs in the battery;
• a fire monitoring unit configured to detect an occurrence of a fire;
• a chiller control unit configured (i) to reduce a cooling temperature of a chiller when the battery monitoring unit determines that the abnormality occurs, and (ii) to operate the chiller at a lower cooling temperature than the reduced cooling temperature when the fire monitoring unit detects a fire;
• an alarm generation unit configured to generate an alarm when the battery monitoring unit determines that the abnormality occurs;
• and
• a heating, ventilation, and air conditioning (HVAC) control unit configured to turn an HVAC system off when the fire monitoring unit detects a fire.

A temperature control method of an energy storage system, the method comprising:

• monitoring, using a battery management system, a temperature and voltage of a battery and determining whether an abnormality occurs in the battery;
• outputting, using the battery management system, a signal to reduce a cooling temperature of a chiller when it is determined that the abnormality occurs;
• detecting, using the battery management system, an occurrence of a fire;
• and
• outputting, using the battery management system, a signal to operate a chiller at a lower cooling temperature than the reduced cooling temperature used when it is determined that the abnormality occurs when the fire is detected.