Automated System for Lithium-Ion Batteries Study Based on Relaxation Processes Analysis

Eniliev, Ravil; Denisov, E. N.; Nikishina, Guzel

doi:10.1109/apede53724.2022.9912474

Cited by 2 publications

(1 citation statement)

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“…Рассмотрим анализ задержек, возникающих при использовании удаленного сервера для принятия диагностических и управляющих решений для ТЭТПЭ на примере одного из наиболее перспективных методов релаксационной диагностики [14]. Интерес к данному методу, основанному на анализе релаксационных процессов, вызванных скачкообразными изменениями нагрузки, обусловлен тем, что он может быть реализован на достаточно простом и недорогом аппаратном обеспечении, не требующем мощных и высокоточных формирователей зондирующих сигналов.…”

Section: метод релаксационной диагностики водородных топливных элемен...unclassified

Assessing the Possibility of Implementing Distributed Diagnostic Systems for Hydrogen Fuel Cells Using Local and Global Telecommunication Networks

Denisov,

Eniliev,

Gaisin

et al. 2024

Intellekt. Sist. Proizv.

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The development of effective methods and means for diagnosing hydrogen fuel cells during their operation is an urgent task, since their implementation will improve the energy characteristics and stability of operation by detecting incorrect operating modes and malfunctions at the early stages of development. This problem can be solved by using various approaches based on the analysis of impedance, relaxation or fluctuation-noise characteristics. All of these methods require the implementation of rather complex computational procedures and the accumulation of fairly large amount of statistical data, which makes it difficult to implement diagnostic devices on inexpensive embedded microprocessor tools. To overcome this drawback, this work proposes the use of distributed diagnostic systems with high-performance server devices connected to local modules via global or local telecommunication networks. Such an implementation will significantly simplify the requirements for local diagnostic modules and reduce their cost, but this raises the question of the efficiency of making diagnostic decisions by such systems.The work carried out, is a study of delays in making diagnostic and control decisions when using remote server devices for signal processing. It has been shown that the use of such systems makes it possible to achieve delays of less than one second even when using intercontinental communication lines. It should be noted that in applications critical to time delays, the distance between the client and server systems should be reduced. The advantages of the proposed implementation of a diagnostic system for electrochemical energy sources are the possibility of simplifying local measurement systems installed on individual sources, the possibility of accelerating signal processing through the use of more productive computing tools and the accumulation of statistical data.

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Section: метод релаксационной диагностики водородных топливных элемен...unclassified

Assessing the Possibility of Implementing Distributed Diagnostic Systems for Hydrogen Fuel Cells Using Local and Global Telecommunication Networks

Denisov,

Eniliev,

Gaisin

et al. 2024

Intellekt. Sist. Proizv.

View full text Add to dashboard Cite

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Implementation Peculiarities of Method for Lithium Batteries Technical State Monitoring Based on Analysis of Relaxation Processes Caused by Load Variations

Denisov,

Nikishina,

Eniliev

et al. 2023

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The paper describes a technique for estimating the parameters of the second-order electrical model of lithium battery (LB), based on the analysis of its response to a step-like load change. The advantage of this approach is the implementation with simple and compact measuring equipment. Taking into account the limitations for the maximum LB load, the solution of a system of nonlinear equations when estimating the model parameters can be reduced to solving a system of linear algebraic equations. This finding makes it possible to implement the approach with inexpensive general-purpose microcontrollers. Thus, the paper proposes a method for reducing computational costs, which consists in sequential fitting of experimental relaxation curves with two single-exponential models instead of using a complex two-exponential model. It provides more than twofold reduction in the time for identifying the parameters of the LB’s electrical model. The experimental studies show that the obtained dependences of the equivalent circuit parameters can be explained by the general properties of physicochemical reactions occurring in LB. From a practical point of view, the proposed method has great advantages. First, it has better time localization compared to electrochemical impedance spectrometry. This advantage is especially important for LB due to the effect of the discharge processes on the results. In addition, the response time of diagnostic systems is significantly reduced. Secondly, the proposed method requires simpler and more inexpensive test equipment, which potentially makes it possible to integrate controls into the LB at the manufacturing and exploitation stages.

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Automated System for Lithium-Ion Batteries Study Based on Relaxation Processes Analysis

Cited by 2 publications

References 0 publications

Assessing the Possibility of Implementing Distributed Diagnostic Systems for Hydrogen Fuel Cells Using Local and Global Telecommunication Networks

Assessing the Possibility of Implementing Distributed Diagnostic Systems for Hydrogen Fuel Cells Using Local and Global Telecommunication Networks

Implementation Peculiarities of Method for Lithium Batteries Technical State Monitoring Based on Analysis of Relaxation Processes Caused by Load Variations

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