SOC precision verification method, apparatus and device, and readable storage medium

Abstract

The invention relates to an SOC precision verification method, device and equipment and a readable storage medium, and relates to the technical field of battery management systems.The SOC precision verification method comprises the steps that an SOC integral model in a hardware-in-loop test system calculates and outputs a first SOC value based on a test current value, and a battery model in the hardware-in-loop test system calculates and outputs a voltage value based on the first SOC value and the test current value; a to-be-tested SOC algorithm in the to-be-tested battery management system calculates and outputs a second SOC value based on the voltage value; and verifying the SOC precision of the SOC algorithm to be tested according to the first SOC value and the second SOC value. The SOC precision of the to-be-tested SOC algorithm is verified through the SOC integral model, the first SOC value output by the battery model and the second SOC value output by the to-be-tested SOC algorithm, battery pack testing is not needed, the problem of over-charging or over-discharging of a battery cell caused by defects of the SOC algorithm can be avoided, the testing safety is improved, and the risk that the battery pack is damaged is reduced.

Description

technical field [0001] The present application relates to the technical field of battery management systems, and in particular, to a method, apparatus, device and readable storage medium for SOC accuracy verification. Background technique [0002] BMS (Battery Management System, battery management system) is a system for intelligently managing and maintaining each battery unit, preventing overcharging and overdischarging of the battery, prolonging the service life of the battery and monitoring the status of the battery. Among them, the SOC (State of charge, state of charge) algorithm is one of the key technologies in the development and application of BMS. People are constantly improving and improving the SOC algorithm. Therefore, it is necessary to verify the SOC accuracy of the newly developed or improved SOC algorithm. To ensure the accuracy of the SOC algorithm. [0003] In the related art, for the newly developed or improved SOC algorithm, it is usually directly mounte...

AI Technical Summary

Problems solved by technology

[0004] The present application provides a SOC accuracy verification method, device, equipment, and readable storage medium to solve the problems in the related art that the improved SOC algorithm is directly mounted on the BMS for battery pack testing to verify the SOC accuracy of the battery pack. The question of risk of harm

Images