Method and apparatus for correcting SOC, battery management system and storage medium

A storage medium having a program stored thereon, wherein the program is executed by a processor to implement:

• acquiring state data of a battery cell in a case where the battery cell meets a preset standing condition;
• determining a first set of pending parameters of a predetermined near-steady-state battery model according to the state data of the battery cell when a length of voltage data in the state data of the battery cell is greater than a first preset length and less than a second preset length and a change value of the voltage data in the state data of the battery cell is greater than a preset change threshold;
• predicting a second set of pending parameters of the predetermined near-steady-state battery model according to the first set of pending parameters;
• and
• calculating an estimated steady-state Open Circuit Voltage (OCV) value according to the second set of pending parameters;
• and
• determining a State of Charge (SOC) correction value corresponding to the estimated steady-state OCV value by using a preset correspondence between steady-state OCVs and SOCs to correct a current SOC.