Patent ID: 11967848
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 14:
15. A method for detecting a state of health of a battery, wherein the method is applied to a battery system, the battery system comprises a plurality of battery modules and a processing module, each of the plurality of battery modules comprises a battery management system and an electrochemical cell pack controlled by the battery management system, and the method comprises:
controlling, by a battery system, an electrochemical cell pack in each of a plurality of battery modules of the battery system to alternately perform a discharging or charging operation, wherein a sum of power of electrochemical cell packs in battery modules other than a first battery module in the plurality of battery modules is greater than power required by a target power-supplied object, wherein each battery module comprises a battery management system to control a corresponding electrochemical cell pack;
recording, by the battery system, a target time representing discharge duration, charging duration, or discharge duration and charging duration of the electrochemical cell pack in the first battery module; and
determining, by the battery system, a state of health of the electrochemical cell pack in the first battery module based on the target time.