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Online generation method and device for second-order PNGV model parameters, and computer equipment

A technology of model parameters and models, applied in the field of online generation of second-order PNGV model parameters

Inactive Publication Date: 2020-09-29
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this stage, there is a lack of an algorithm that can quickly identify the parameters of the second-order PNGV model

Method used

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  • Online generation method and device for second-order PNGV model parameters, and computer equipment
  • Online generation method and device for second-order PNGV model parameters, and computer equipment
  • Online generation method and device for second-order PNGV model parameters, and computer equipment

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Embodiment Construction

[0058] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0059] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0060] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0061] It should be understood that the term "an...

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Abstract

The embodiment of the invention provides an online generation method and device for second-order PNGV model parameters, and computer equipment. A second-order PNGV model is an equivalent circuit modelof the to-be-tested battery; the method comprises the following steps: acquiring multiple terminal voltages and multiple loop currents of a to-be-tested battery; constructing an initial covariance matrix and an initial equivalent parameter matrix; obtaining a loop current according to the plurality of terminal voltages and the plurality of loop currents, and updating the initial covariance matrixand the initial equivalent parameter matrix, generating a plurality of equivalent parameters of the second-order PNGV model, and calculating a plurality of model parameters of the second-order PNGV model by utilizing the plurality of equivalent parameters, so that the plurality of model parameters of the second-order PNGV model can be quickly calculated.

Description

【Technical field】 [0001] The invention relates to the technical field of data processing, in particular to an online generation method, device and computer equipment of second-order PNGV model parameters. 【Background technique】 [0002] So far, the total number of new energy vehicles in my country has reached 3.8 million, and the number of new energy vehicles ranks first in the world. In order to achieve the ideal cruising range, new energy vehicles are often equipped with a large number of battery devices. The energy density of these battery devices is very high, if not properly used, dangerous accidents will easily occur. In order to ensure that the battery operates within a safe range, it is necessary to estimate the state of the battery based on the battery model. Generally, the second-order PNGV model is the first choice for battery state estimation, because compared with the second-order RC equivalent circuit model, the model is not Less complicated, but more precise...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F17/12G06F17/16G01R31/367G01R31/385G01R31/389G01R31/396
CPCG06F17/12G06F17/16G01R31/367G01R31/385G01R31/389G01R31/396G06F30/20
Inventor 金鹏林鹏孙力
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY