Patent ID: 11870292
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 9:
10. A method for controlling a power of a parallel multi pack system, the method comprising:
(a) providing first to nth sensor units configured to measure operation characteristic values of first to nth battery packs that are included in the parallel multi pack system and connected to each other in parallel;
(b) determining a pack resistance of each of the first to nth battery packs, based on the operation characteristic value of each battery pack received from the first to nth sensor units;
(c) determining an n number of available powers, respectively corresponding to the pack resistances of the battery packs, by using pre-defined correlation information between pack resistance and available power, and a minimum available power thereof;
(d) determining the total power of the parallel multi pack system so that the pack power of a battery pack having a lowest pack resistance becomes identical to the minimum available power; and
(e) controlling charging or discharging of the first to nth battery packs to not exceed the total power of the parallel multi pack system.