Battery system correction method, equipment, storage medium and device

Abstract

The invention relates to the technical field of battery system correction, and discloses a battery system correction method, equipment, a storage medium and a device. The method comprises the following steps: acquiring a charging correction flag bit in a charging process and a corresponding pre-stored battery SOC correction difference value; acquiring an SOC value of a to-be-corrected battery, andjudging whether the SOC value of the to-be-corrected battery reaches a preset charging threshold or not; when the SOC value of the to-be-corrected battery reaches a preset charging threshold, acquiring a charging SOC value for maintaining the SOC value of the to-be-corrected battery in a preset charging threshold state; and counteracting the pre-stored SOC correction difference value according tothe charging SOC value to realize correction of the battery system. According to the invention, the correction of the battery system is realized, so that the SOC value correction does not need to becarried out in a cliff mode when the corrected SOC value is obtained through a SOC correction curve, however counteraction is conducted through the charging SOC value in the next charging process, andslow correction of the SOC is realized.

Description

technical field [0001] The invention relates to the technical field of battery system correction, in particular to a battery system correction method, equipment, storage medium and device. Background technique [0002] At present, SOC (State of charge, battery state of charge), that is, SOC estimation strategies mainly include: open circuit voltage method, ampere-hour integration method, artificial neural network method, and Kalman filter method. Battery SOC estimation in the industry mainly uses ampere-hour integration supplemented by OCV (Open circuit voltage, open circuit voltage) correction algorithm, but based on the battery pack consistency within the normal range, the SOC estimation error can be controlled within ±4%. [0003] Since the battery SOC-OCV correction in the industry generally obtains the current OCV according to the parameter lookup table, the current SOC value is directly or indirectly corrected, that is, the SOC decline is accelerated during the dischar...

AI Technical Summary

Problems solved by technology

[0003] Since the battery SOC-OCV correction in the industry generally obtains the current OCV according to the parameter lookup table, the current SOC value is directly or indirectly corrected, that is, the SOC decline is accelerated during the discharge process, and the SOC will jump off a cliff through direct correction. Customers cannot accept it during use, which is not conducive to user experience

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