Method for determining residual electric quantity of battery, device and automobile

Abstract

The invention provides a method for determining the residual electric quantity of a battery, a device, and an automobile, and relates to the technical field of automobile. The method comprise the following steps: choosing an electric quantity determining mode from an established first electric quantity determining mode and an established second electric quantity determining mode, wherein the first electric quantity determining mode and the second electric quantity determining mode are both a five layer structure, which is constructed on the basis of artificial neural network and an adaptive neural fuzzy system of fuzzy logic; inputting the obtained current state information of a battery into the target electric quantity determining model to obtain the residual electric quantity of the battery. The provided method solves the problems that in the prior art, the residual electric quantity is hard to determine under a work condition, the requirements on the current sampling precision are high, and the error of the results is large.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and device for determining the remaining power of a battery and an automobile. Background technique [0002] At present, a lot of research has been done on the accurate estimation of the SOC of the remaining battery capacity at home and abroad, but the commonly used method is still the combination of the simple open circuit voltage method and the ampere-hour integration method. The open-circuit voltage method is to estimate the initial SOC value of the battery according to the static open-circuit voltage OCV data of the cell voltage look-up table when the battery management system is still and powered on again. The ampere-hour integration method is to integrate the charging and discharging current of the battery with respect to time, and estimate the dynamic SOC value of the battery. [0003] The open circuit voltage method requires the power battery to stand for a ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method, device and vehicle for determining the remaining power of a battery, so as to solve the problems that the existing solutions are not easy to determine the remaining power under working conditions, have high requirements for current sampling accuracy, and have large error in results.

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