Energy storage system and method for controlling the same

摘要

An energy storage system configured to be coupled to at least one of a power generation system, a grid, or a load, the energy storage system including a battery system including at least one rack, the at least one rack including a rack controller, and a system controller configured to control a charging operation and a discharging operation of at least one battery on the at least one rack in accordance with a temperature of the at least one battery.

主权项

1. An energy storage system configured to be coupled to at least one of a power generation system which is a system for generating power using an energy source, a grid comprising a power generating station, or a load, the energy storage system comprising:
a battery system comprising at least one rack, the at least one rack comprising a rack controller configured to obtain a temperature of at least one battery; and a system controller configured to control a charging operation and a discharging operation of the at least one battery on the at least one rack in accordance with the obtained temperature of the at least one battery received from the rack controller, the system controller comprising a battery temperature determination unit and a current controller, the battery temperature determination unit being configured to compare the obtained temperature with a reference temperature, and the current controller being configured to:
control a first current discharging operation of the at least one battery at a first current when the obtained temperature is greater than or equal to the reference temperature; andcontrol a second current discharging operation at a second current when the obtained temperature is less than the reference temperature, wherein the first current is greater than the second current, wherein the rack further comprises at least one battery tray on which the at least one battery is located, the at least one battery tray comprising a tray controller, and wherein the rack controller is configured to receive the obtained temperature of the at least one battery from the tray controller of the at least one battery tray corresponding to the at least one battery.