Proceedings ArticleDOI
An enhanced coulomb counting method for estimating state-of-charge and state-of-health of lead-acid batteries
Kong-Soon Ng,Yao-Feng Huang,Chin-Sien Moo,Yao-Ching Hsieh +3 more
- pp 1-5
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TLDR
In this paper, an enhanced coulomb counting method based on the depth-of-discharge (DOD) was proposed to estimate the state of charge (SOC) and state of health (SOH) for valve regulated lead-acid (VRLA) batteries.Abstract:
This paper proposes an enhanced coulomb counting method based on the depth-of-discharge (DOD) to estimate the state-of-charge (SOC) and state-of-health (SOH) for valve regulated lead-acid (VRLA) batteries. The losses at different discharging currents are accounted for compensation to the releasable capacities. Furthermore, the SOH is revaluated at the depletion and fully charged states by the maximum releasable capacity and the charged capacity, consequently leading to more accurate SOC estimation. Through the experiments that emulate practical operations, the experimental results reveal that the maximum error is less than 6 %.read more
Citations
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Journal ArticleDOI
Lithium-Ion Battery Pack Robust State of Charge Estimation, Cell Inconsistency, and Balancing: Review
TL;DR: In this article, the state-of-the-art battery pack state of charge estimation methods along with the impact of cell inconsistency on battery performance and battery state estimation are discussed.
Patent
An imbedded chip for battery applications
Rachid Yazami,Cher Ming Tan +1 more
TL;DR: In this article, the authors present methods, systems and devices for thermodynamically evaluating electrochemical systems and components thereof, including electrochemical cells such as batteries, with accuracies large enough to allow for precise determination of thermodynamic state functions and materials properties relating to the composition, phase, states of charge, health and safety and electrochemical properties of electrodes and electrolytes in an electrochemical cell.
Journal ArticleDOI
State of Charge and State of Health Estimation of AGM VRLA Batteries by Employing a Dual Extended Kalman Filter and an ARX Model for Online Parameter Estimation
TL;DR: In this article, a dual extended Kalman filter (DEKF) and an auto regressive exogenous (ARX) model for online parameters estimation is proposed, where the DEKF provides precise information concerning the battery open circuit voltage (OCV) to the ARX model.
Journal ArticleDOI
Temperature dependent state-of-charge estimation of lithium ion battery using dual spherical unscented Kalman filter
Htet Aung,Kay Soon Low +1 more
TL;DR: In this article, a dual square root unscented Kalman filter based on unit spherical unscenting transform is proposed to estimate the state-of-charge (SOC) of a satellite.
Journal ArticleDOI
State-of-charge-based droop control for stand-alone AC supply systems with distributed energy storage
TL;DR: In this article, the authors proposed a new state-of-charge (SOC) based droop control, whereby the P-f curve is shifted either upwards or downwards according to the battery SOC.
References
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Journal ArticleDOI
Enhanced coulomb counting method for estimating state-of-charge and state-of-health of lithium-ion batteries
TL;DR: In this paper, a smart estimation method based on coulomb counting is proposed to improve the estimation accuracy for state-of-charge (SOC) estimation of lithium-ion batteries with high charging and discharging efficiencies.
Journal ArticleDOI
Methods for state-of-charge determination and their applications
TL;DR: In this article, the authors introduce commonly used methods for state-of-charge (SOC) determination and establish a relationship between the advantages of different methods and the most common applications.
Journal ArticleDOI
State-of-Charge Determination From EMF Voltage Estimation: Using Impedance, Terminal Voltage, and Current for Lead-Acid and Lithium-Ion Batteries
TL;DR: The proposed model determines the SOC by incorporating the changes occurring due to terminal voltage, current load, and internal resistance, which mitigate the disadvantages of using impedance only.
Journal ArticleDOI
Battery choice and management for new-generation electric vehicles
TL;DR: This paper deals with the design of a battery pack based on Li-ion technology for a prototype electric scooter with high performance and autonomy that features a high capability of energy storing in braking conditions, charge equalization, overvoltage and undervoltage protection and, obviously, SoC information in order to optimize autonomy instead of performance.
Journal ArticleDOI
An Improved Battery Characterization Method Using a Two-Pulse Load Test
TL;DR: In this paper, a two-pulse test was proposed to determine the AHC, SoC, and SoH of a valve regulated lead acid (VRLA) and a lithium ion battery.