Battery OCV estimation method and device with voltage compensation and storage medium

The invention belongs to the technical field of batteries in the new energy industry, and particularly relates to a battery OCV estimation method and device with voltage compensation and a storage medium, and the method comprises the steps: carrying out the offline HPPC test of a battery unit, and obtaining the voltage and current data; carrying out battery parameter identification by using HPPC test data to obtain battery model parameters; determining a compensation voltage value according to the identified battery model parameters in combination with HPPC test data; obtaining a first estimated value of the OCV of the battery unit by using the voltage and the current of the battery unit during actual online operation; and combining the first estimation value of the OCV with the compensation voltage value to obtain a second estimation value of the OCV. According to the method, voltage compensation can be carried out on the OCV obtained through real-time estimation, inherent errors are eliminated, and the accu