Data calibration method and device and electronic equipment

Abstract

The invention provides a data calibration method and device and electronic equipment, and the method comprises the steps: obtaining an initial voltage value and an initial cumulative capacity value of a target battery at the beginning of a current charging and discharging period, and a current voltage value, a current cumulative capacity value and a current SOC measurement value at the end of the current charging and discharging period; based on a voltage difference value between the initial voltage value and the current voltage value and a capacity difference value between the initial accumulated capacity value and the current accumulated capacity value, calculating a target ratio of the voltage difference value to the capacity difference value, and determining an SOC calibration value corresponding to the target ratio according to a corresponding relation between the ratio of the voltage difference value to the capacity difference value and the SOC calibration value, according to the method, the SOC calibration value is determined, the current SOC measurement value is calibrated based on the determined SOC calibration value, SOC calibration operation can be carried out in the charging and discharging process of the target battery, the SOC calibration frequency can be increased, the SOC is calibrated in time, and the deviation between the actual electric quantity of the lithium iron phosphate battery and the displayed electric quantity is small.

Description

technical field [0001] The present invention relates to the field of data calibration, and more particularly, to a data calibration method, device and electronic equipment. Background technique [0002] Due to the advantages of high safety and long cycle life, lithium iron phosphate batteries have gradually increased in the field of electrochemical energy storage in recent years, especially in large-scale energy storage systems. The state of charge SOC is one of the core parameters of the battery management system. Accurately calibrating the SOC of the lithium iron phosphate battery plays a vital role in giving full play to the best performance of the energy storage system and improving the safety of the battery. [0003] At present, when SOC calibration is performed, OCV static calibration is often used. This method requires the lithium iron phosphate battery to stand for a period of time before performing the calibration operation. This calibration method makes the SOC cal...

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Problems solved by technology

[0004] In view of this, the present invention provides a data calibration method, device and electronic equipment to solve the problem that in the prior art, the number of SOC calibrations is small when the battery is actually running, and the SOC cannot be calibrated in time, so that the actual power of the lithium iron phosphate battery and It shows the problem of large power deviation

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