Topic
State of charge
About: State of charge is a research topic. Over the lifetime, 12013 publications have been published within this topic receiving 201419 citations. The topic is also known as: SoC & SOC.
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140 citations
TL;DR: In this article, a numerical model is developed to predict transient behaviors of electric vehicle lead-acid batteries during discharge and charge processes, which not only accounts for coupled processes of electrochemical kinetics and mass transport occurring in a battery cell, but also considers free convection resulting from density variations due to acid stratification.
Abstract: A numerical model is developed to predict transient behaviors of electric vehicle lead-acid batteries during discharge and charge processes. The model not only accounts for coupled processes of electrochemical kinetics and mass transport occurring in a battery cell, but also considers free convection resulting from density variations due to acid stratification. A single set of conservation equations valid for both porous electrodes and the free electrolyte region is derived and numerically solved using a computational fluid dynamics technique. This numerical methodology is capable of simulating a two-dimensional cell with the fluid flow taken into consideration and requires only tens of minutes of central processing unit time on engineering workstations. Four sample calculations are presented in this work to provide rigorous validation of the developed simulator. The simulator is capable of predicting the transient behavior of the acid concentration, the porosity of the electrodes, and the state of charge of the battery during discharge, rest, and charge cycles. The model can also be used to investigate the effects of various system parameters, such as electrode dimensions, separator design, temperature, and electrolyte composition on the battery performance (voltage, power, cold cranking amperage, etc.).
140 citations
TL;DR: In this article, a specialized impedance spectroscope for industrial batteries has been developed, as well as modifications of the standard electrochemical impedance spectroscopy (EIS) algorithm.
140 citations
TL;DR: In this paper, a nonlinear predictor and a battery model for estimating the state of charge (SoC) of lead-acid batteries for hybrid electric vehicles (HEV) was proposed.
140 citations
Book•
21 May 2008
TL;DR: The field of state-of-charge (SoC) indication for rechargeable batteries is described in this article, where an overview of the current state of the art of SoC indication methods including available market solutions from leading semiconductor companies is provided.
Abstract: This book describes the field of State-of-Charge (SoC) indication for rechargeable batteries An overview of the state-of-the-art of SoC indication methods including available market solutions from leading semiconductor companies is provided All disciplines are covered, from electrical, chemical, mathematical and measurement engineering to understanding battery behavior This book will therefore is for persons in engineering and involved in battery management
140 citations