Battery performance formula fitting method and device, storage medium and computer equipment

Abstract

The embodiment of the invention provides a battery performance formula fitting method and device, a storage medium and computer equipment. The method comprises the following steps: acquiring actual measurement performance data corresponding to a plurality of temperatures of a battery in a first temperature range; fitting the plurality of temperatures and the actual measurement performance data corresponding to each temperature through an Arrhenius formula to obtain a fitting constant in the Arrhenius formula; generating a battery performance formula according to the fitting constant and the Arrhenius formula; calculating the plurality of temperatures according to the battery performance formula to generate fitting data corresponding to each temperature; and verifying the fitting data according to the actual measurement performance data corresponding to the plurality of temperatures, and if the verification succeeds, determining that the battery performance formula is qualified. Therefore, the experimental data detection amount is reduced, and the precision of the battery management system is improved.

Description

【Technical field】 [0001] The invention relates to the field of automobile manufacturing, in particular to a fitting method, device, storage medium and computer equipment of a battery performance formula. 【Background technique】 [0002] With the development of the economy, energy and environmental protection issues have become more and more hot issues of social concern. In recent years, new energy vehicles have gradually entered people's field of vision, and lithium-ion batteries for vehicles are an indispensable and important accessory for new energy vehicles. [0003] With the increasing application of lithium-ion batteries for vehicles, how to improve the accuracy of the battery management system so that lithium-ion batteries can be used more safely and efficiently has become one of the problems that plague people. To improve the accuracy of the battery management system, it is necessary to master the main technical parameters of lithium-ion batteries. The main technical ...

AI Technical Summary

Problems solved by technology

To improve the accuracy of the battery management system, it is necessary to master the main technical parameters of lithium-ion batteries. The main technical parameters of lithium-ion batteries include battery capacity, power, internal resistance, charge and discharge voltage, etc., and in the process of actually measuring these parameters There are also problems such as limited data point collection and time-consuming data testing.

As a result, the amount of experimental data detection is large, and the accuracy of the battery management system is low

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