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Parameter identification method based on linear time-invariant battery model structure

A battery model and parameter identification technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems that the system accuracy requirements cannot be guaranteed

Active Publication Date: 2019-07-26
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, the battery model parameters obtained by the above method cannot g

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  • Parameter identification method based on linear time-invariant battery model structure
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Embodiment Construction

[0040] Hereinafter, the present invention will be further described with reference to the specific embodiments of the drawings.

[0041] The steps of the parameter identification method based on the linear time-invariant battery model structure of the present invention are as follows:

[0042] (1) Determine the goal and obtain prior knowledge

[0043] Determine the use environment and accuracy requirements of the battery model of the present invention, and obtain sufficient prior knowledge on this basis, such as the electrochemical reaction mechanism, dynamic response characteristics, and time constants of the battery. This prior knowledge will play a guiding role in the design of battery model identification experiments and the preliminary determination of the model structure.

[0044] (2) Design the battery model identification experiment

[0045] According to the prior knowledge obtained in step (1), a reasonable battery model identification experiment method is designed to stimulat...

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Abstract

A parameter identification method based on a linear time-invariant battery model structure firstly obtains the parameter identification test of a design model through the target and prior knowledge, determines the structure of a battery model, identifies parameters of the battery model, and finally verifies the battery model.

Description

Technical field [0001] The invention relates to a parameter identification method based on a linear time-invariant battery model structure. Background technique [0002] The battery system is a very complex system, and its electrochemical reaction process presents a high degree of non-linearity. The battery model is the basis of battery-related research and one of the research difficulties in this research field. How to identify model parameters needs to be considered next. The problem. Battery model identification can be defined as establishing the parameter values ​​of the battery model by minimizing a certain error criterion function from the given input and output data. In terms of battery model identification, Githin K. of Pennsylvania State University in the United States proposed a battery model identification method based on offline least squares and online iterative gradient correction algorithm, which can realize online identification of model parameters. Chris Mi of ...

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Application Information

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IPC IPC(8): G01R31/367
CPCG01R31/367
Inventor 王立业王丽芳廖承林张玉旺张志刚张文杰
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI