ENERGY STORAGE SYSTEM AND CONTROL METHOD THEREOF

Embodiments of this application provide an energy storage system and a control method thereof, which is applied to the energy field. The system includes a fire suppression system controller, a fire extinguishing apparatus, a first sensing unit configured to detect a temperature and smoke of the energy storage system, a second sensing unit configured to detect a thermal runaway parameter, an energy storage system controller, and an energy storage unit. When the thermal runaway parameter output by the second sensing unit meets a thermal runaway condition, the energy storage system controller sends alarm information to the fire suppression system controller, to stop energy charging or energy supply of the energy storage unit. When receiving the alarm information sent by the first sensing unit and/or the energy storage system controller, the fire suppression system controller indicates the fire extinguishing apparatus to perform a fire extinguishing operation. In this way, thermal runaway is recognized in time and accurately, and suppression is performed in a thermal runaway phase, to effectively reduce fire risks such as burning and explosion and heat propagation caused by thermal runaway of the energy storage system.