Patent ID: 11942813
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery-system control method for a battery system including a module controller to control a plurality of battery modules capable of supplying power to a load to execute or stop supplying power, the method comprising:
monitoring for each of the plurality of battery modules, whether the battery module is abnormal or normal, based on at least one of a voltage value of a battery included in the battery module, an SOC value of the battery indicating a state of charge, or a temperature of the battery;
in response to detection of an abnormality, selecting a battery module having the abnormality, without stopping the abnormal battery module;
after the selecting, comparing a current value of a current supplied to the load, with a total value of rated currents of all battery modules that are normal and that are supplying power to the load;
when the current value of the current supplied to the load is greater than the total value of the rated currents of all the battery modules that are supplying power to the load, performing control to stop all the plurality of battery modules; and
when the current value of the current supplied to the load is less than or equal to the total value of the rated currents of all the battery modules that are supplying power to the load, performing control to stop the abnormal battery module and not to stop the normal battery modules.