Battery differential capacity curve correction method and device

The invention provides a battery differential capacity curve correction method and device, and relates to the technical field of batteries, and the method comprises the steps: obtaining the real-time data of a to-be-detected battery; carrying out differential analysis on the measurement voltage and the measurement capacity, and determining a differential capacity measurement value at each time point; for two adjacent time points, determining a differential capacity prediction value of the current time point according to the differential capacity correction value and the prediction parameter of the previous time point; and correcting the differential capacity measurement value of the current time point according to the differential capacity prediction value of the current time point and a preset correction parameter, and determining a differential capacity correction value of the current time point until the correction of the differential capacity measurement values of all the time points is completed, thereby