Patent ID: 11870283
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. An energy storage system comprising:
a battery configured to at least store received electrical energy in a form of direct current, or output the stored electrical energy;
a power conditioning system configured to convert an electrical characteristic to charge or discharge the battery; and
a battery management system configured to monitor state information of the battery,
wherein the battery comprises a plurality of battery packs each comprising a respective plurality of battery cells,
wherein the battery management system comprises:
battery pack circuit boards which are disposed in each of the plurality of battery packs, and configured to obtain state information of the plurality of battery cells comprised in each battery pack; and
a main circuit board coupled to the battery pack circuit boards by a communication line, and configured to receive the state information obtained by the battery pack circuit boards from each battery pack,
wherein each of the battery packs further comprises battery modules to which the plurality of battery cells are connected in series and in parallel,
wherein the battery modules are electrically connected to each other,
wherein two of the battery modules are combined to form a battery module assembly, and
wherein the battery pack circuit boards are disposed at an upper side of the battery module assembly.