Patent ID: 11923714
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC H

Claim 0:
1. A device for controlling a storage battery system, the storage battery system having a plurality of storage battery modules connected in series and each of the storage battery modules including a battery and a DC/DC converter connected to the battery, the device comprising:
a processor including processing circuitry configured to calculate state information on each of the batteries of the storage battery modules;
the processor further configured to calculate a power conversion efficiency of each of the DC/DC converters of the storage battery modules; and
the processor further selects one or a plurality of storage battery modules to be used while the storage battery system is charged or discharged and to determine a charge power or a discharge power of each of the selected one or plurality of storage battery modules, based on the state information of the batteries and the power conversion efficiencies of the DC/DC converters,
wherein the processor selects the one or the plurality of storage battery modules to be used while the storage battery system is charged or discharged by stopping use of at least one of the plurality of storage battery modules.