Highly Effective Cell Equalization in a Lithium-Ion Battery Management System

Koseoglou, Markos; Tsioumas, Evangelos; Jabbour, Nikolaos; Mademlis, Christos

doi:10.1109/tpel.2019.2920728

Cited by 52 publications

(15 citation statements)

References 41 publications

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“…Thus, after several charge/discharge cycles, the battery strings tend to go out of balance. Such a mismatch stems from an inconsistency in either the cells' capacities or the cells' SOCs due to manufacturing tolerances (intrinsic) and varying ambient conditions (extrinsic) [73]- [74]. Therefore, it is important that a BMS be equipped with cell balancing capability.…”

Section: A Cell Balancingmentioning

confidence: 99%

A Review of Modeling, Management, and Applications of Grid-Connected Li-Ion Battery Storage Systems

Rouholamini

Wang

Nehrir

et al. 2022

IEEE Trans. Smart Grid

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Section: A Cell Balancingmentioning

confidence: 99%

A Review of Modeling, Management, and Applications of Grid-Connected Li-Ion Battery Storage Systems

Rouholamini

Wang

Nehrir

et al. 2022

IEEE Trans. Smart Grid

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“…Besides, compared with the battery ESS, the IHESS has a relatively low energy density (Vasel-Be-Hagh, et al, 2014), high power density (Dunn, et al, 2011), and a long service life (Zhao, et al, 2017;Koseoglou, et al, 2020), which is suitable to achieve the "fully charge" and "fully discharge" in the fixed working conditions of HMTs. However, the complex structure, numerous containers, pipelines, components, working mediums, and the dynamic discontinuous heat transfer process all make it difficult to describe the thermal process of IHESS.…”

Section: Challenges In Improved Hydraulic Energy Storage System Application On Hybrid Mining Trucksmentioning

confidence: 99%

Investigation on Thermal Characteristics of the Oil-Circulating Hydraulic Energy Storage System for Hybrid Mining Trucks

Jin

et al. 2021

Front. Energy Res.

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The improved hydraulic energy storage system (IHESS) is a novel compact hydraulic ESS with only 10% of oil and 64.78% of installation space of the regular ones. However, its novel circulating structure and lightweight material result in poor heat dissipation. The thermodynamic and heat transfer model of IHESS with an oil-circulating layout is proposed. Based on the mining trucks’ dynamic model, thermal characteristics of IHESSs with different parameters under the actual and simplified working conditions are studied and the factors causing overheating are analyzed. Finally, a feasible thermal design is put forward, and its efficiency is analyzed. The simulation shows that more accumulators and higher recovery power lead to higher system temperature and vice versa. Under the standard simplified working condition at 40°C ambient temperature, the highest oil temperature reached is 93.13°C. About 90% of the generated heat is converted into the internal energy of nitrogen and oil. On this basis, by adopting an energy-saving passive cooling system with a cooling power of 6.68 kW, the highest temperature of the oil drops to 52.79°C and 28% of the generated heat is released through the cooling system.

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“…Passive cell balancing is applied during charging when the voltage of a cell has reached the maximum voltage threshold (Koseoglou et al, 2020). It is suitable for charging as some of the battery energy will be dissipated.…”

Section: Balancing Under Charging Discharging and Idle Statementioning

confidence: 99%

“…Passive balancing scheme, shown in Fig. 2 is extensively used in EV applications due to its low cost and easy implementation (Koseoglou et al, 2020). Problem consists of excess heat dissipation due to the balancing resistor, long balancing time and low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Comparative Study of Cell Balancing Methods for Lithium-Ion Batteries Used in Electric Vehicles

Duraisamy

Deepa

2021

Int. J. Renew. Energy Dev.

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Vehicle manufacturers positioned electric vehicles (EVs) and hybrid electric vehicles (HEVs) as reliable, safe and environmental friendly alternative to traditional fuel based vehicles. Charging EVs using renewable energy resources reduce greenhouse emissions. The Lithium-ion (Li-ion) batteries used in EVs are susceptible to failure due to voltage imbalance when connected to form a pack. Hence, it requires a proper balancing system categorised into passive and active systems based on the working principle. It is the prerogative of a battery management system (BMS) designer to choose an appropriate system depending on the application. This study compares and evaluates passive balancing system against widely used inductor based active balancing system in order to select an appropriate balancing scheme addressing battery efficiency and balancing speed for E-vehicle segment (E-bike, E-car and E-truck). The balancing systems are implemented using “top-balancing” algorithm which balance the cells voltages near the end of charge for better accuracy and effective balancing. The most important characteristics of the balancing systems such as degree of imbalance, power loss and temperature variation are determined by their influence on battery performance and cost. To enhance the battery life, Matlab-Simscape simulation-based analysis is performed in order to fine tune the cell balancing system for the optimal usage of the battery pack. For the simulation requirements, the battery model parameters are obtained using least-square fitting algorithm on the data obtained through electro chemical impedance spectroscopy (EIS) test. The achieved balancing time of the passive and active cell balancer for fourteen cells were 48 and 20 min for the voltage deviation of 30 mV. Also, the recorded balancing time was 215 and 42 min for the voltage deviation of 200 mV.

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Highly Effective Cell Equalization in a Lithium-Ion Battery Management System

Cited by 52 publications

References 41 publications

A Review of Modeling, Management, and Applications of Grid-Connected Li-Ion Battery Storage Systems

A Review of Modeling, Management, and Applications of Grid-Connected Li-Ion Battery Storage Systems

Investigation on Thermal Characteristics of the Oil-Circulating Hydraulic Energy Storage System for Hybrid Mining Trucks

Evaluation and Comparative Study of Cell Balancing Methods for Lithium-Ion Batteries Used in Electric Vehicles

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