Abstract: Provided is an energy storage system including: an external power input unit receiving uninterrupted external power; a battery storing electric power; a power adjustment device adjusting the uninterrupted external power and the power of the battery, the battery including a battery module with one or more battery cells; a battery management system; a main switch disposed on a power path between the battery module and the battery management system and a path between the battery module and the power adjustment device; and a wake-up relay receiving a wake-up signal from the power adjustment device and transmitting the wake-up signal to the battery management system.

Abstract: A battery pack, comprising: a plurality of battery modules; a battery management system (BMS) controlling charging or discharging of the battery pack; a wake-up control unit controlling wake-up of the BMS; a protection circuit unit protecting the battery pack; and a main field-effect transistor (FET), one end being connected to the protection circuit unit, and another end being connected to a positive output terminal of the battery pack, to control an output of the battery pack in response to control by the BMS, the protection circuit unit comprising a blocking switch, one end being connected to a positive terminal of the plurality of battery modules, another end being connected to the BMS and the main FET, so that the blocking switch is set to an on state and then is turned off upon receiving a blocking signal from the BMS to block the output of the battery pack.

Abstract: A battery pack, comprising: a plurality of battery modules; a battery management system (BMS) controlling charging or discharging of the battery pack; a wake-up control unit controlling wake-up of the BMS; a protection circuit unit protecting the battery pack; and a main field-effect transistor (FET), one end being connected to the protection circuit unit, and another end being connected to a positive output terminal of the battery pack, to control an output of the battery pack in response to control by the BMS, the protection circuit unit comprising a blocking switch, one end being connected to a positive terminal of the plurality of battery modules, another end being connected to the BMS and the main FET, so that the blocking switch is set to an on state and then is turned off upon receiving a blocking signal from the BMS to block the output of the battery pack.

Abstract: Provided is an energy storage system including: an external power input unit receiving uninterrupted external power; a battery storing electric power; a power adjustment device adjusting the uninterrupted external power and the power of the battery, the battery including a battery module with one or more battery cells; a battery management system; a main switch disposed on a power path between the battery module and the battery management system and a path between the battery module and the power adjustment device; and a wake-up relay receiving a wake-up signal from the power adjustment device and transmitting the wake-up signal to the battery management system.