Thermal modeling of an on-board nickel-metal hydride pack in a power-split hybrid configuration using a cell-based resistance-capacitance, electro-thermal model

Omar, Mohammed; Pisu, Pierluigi; Mayyas, Ahmad; Alahmer, Ali; Montes, Carlos

doi:10.1002/er.1923

Cited by 9 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since battery functions follow electrochemical reactions and the reaction rate is affected by temperature , thermal models must be included in order to account for possible thermal runaway. The heat balance is determined by several physical parameters such as heat capacitance, heat generation accompanying electrochemical reaction, and the heat dissipation through the combined effect of conduction and convection .…”

Section: Interactions Among Cellsmentioning

confidence: 99%

Thermal runaway due to symmetry breaking in parallel-connected battery cells

Feng

Zhang

2013

Int. J. Energy Res.

View full text Add to dashboard Cite

SUMMARY A battery energy system consists of networks of cells. This paper considers the coupling among the cells that are connected in parallel. Cells are designed to react uniformly in response to charging and discharging. We study the possible occurrence of symmetry breaking when small perturbation leads to further deviation from uniform responses. By including coupling among the cells to the existing battery models, we formulate a dynamical system governing the rate of change of thermal and electrical quantities of the cells. Limited numerical solution using fourth‐order Runge–Kutta method was carried out, and stability criteria are obtained from algebraic analysis. The results show that a much more stringent effort in thermal management is required to prevent thermal runaway initiated by cells interacting with each other due to asymmetric perturbations. The increased heat transfer between the two cells serves to offset the undesirable effect of the parallel connection, but the stabilizing effect could be greatly compromised if the cell incorporates three parallel units as in some commercial Li‐ion battery cells. Copyright © 2013 John Wiley & Sons, Ltd.

show abstract

Section: Interactions Among Cellsmentioning

confidence: 99%

Thermal runaway due to symmetry breaking in parallel-connected battery cells

Feng

Zhang

2013

Int. J. Energy Res.

View full text Add to dashboard Cite

show abstract

“…One popular model for characterizing electrical properties is the Shepherd Model (Shepherd, 1965). The discharge voltage of the battery is calculated using a variety of factors, including open circuit voltage, exponential voltage losses, polarization voltage losses, and ohmic losses (Mayyas et al, 2013). • Converters: Bidirectional DC/DC boost converters for the BS and SC coupling to the common DC bus, enabling power flow in either direction.…”

Section: Frontiers In Energy Researchmentioning

confidence: 99%

Optimized equivalent consumption minimization strategy-based artificial Hummingbird Algorithm for electric vehicles

Almousa,

Rezk,

Alahmer

2024

Front. Energy Res.

Self Cite

View full text Add to dashboard Cite

The automotive sector is experiencing rapid evolution, with the next-generation emphasizing clean energy sources such as fuel-cell hybrid electric vehicles (FCHEVs) due to their energy efficiency, eco-friendliness, and extended driving distance. Implementing effective energy management strategies play a critical role in optimizing power flow and electrical efficiency in these vehicles. This study proposes an optimized energy management strategy (EMS) for FCHEVs. The suggested EMS introduces a hybridization between the equivalent consumption minimization strategy (ECMS) and the Artificial Hummingbird Algorithm (AHA). The Federal Test Procedure for Urban Driving (FTP-75) is employed to evaluate the performance of the proposed EMS. The results are assessed and validated through comparison with outcomes obtained by other algorithms. The findings demonstrate that the proposed EMS surpasses other optimizers in reducing fuel consumption, potentially achieving a 48.62% reduction. Moreover, the suggested EMS also yields a 15.45% increase in overall system efficiency.

show abstract

“…The internal resistance is based on several factors such as ohmic resistance and kinetic and diffusion polarization losses in the cell and the electrical collector system . The present model will incorporate 80 A current and 66 mΩ resistance , which corresponds to 0.35 kW of heat dissipation. Without any active heat dissipation, over time, this performance and cycle life of the battery will be reduced significantly.…”

Section: System Analysismentioning

confidence: 99%

Performance assessment of thermal management systems for electric and hybrid electric vehicles

Hamut

Dinçer

Naterer

2012

Int. J. Energy Res.

View full text Add to dashboard Cite

SUMMARY Thermal management systems (TMS) are one of the key components of electric and hybrid electric vehicles to achieve high vehicle efficiency and performance under all operating conditions. Current improvements in electric battery technology allow vehicles to have relatively long ranges, fast acceleration, and long life while keeping low‐maintenance costs and considerably lower emissions. However, the vehicle performance is significantly affected by the battery operating conditions. Moreover, the cell life cycle, safety, and possibility of thermal runaway significantly depend on peak temperature rise and temperature uniformity of the battery. Therefore, various TMSs are created to keep batteries within ideal operating ranges. In this article, three different TMS systems—passive cabin cooling (via air), active moderate liquid circulation (via refrigerant), and active liquid circulation (via refrigerant and coolant)—are analyzed and compared with electric and hybrid electric vehicles. A second law analysis is used to examine the areas of low exergy efficiency in each system and minimize the entropy generation based on the system configuration. Moreover, TMS systems are compared on the basis of battery temperature increase and temperature uniformity. Various parametric studies are conducted to compare the TMS in different ambient and operating conditions. On the basis of the analysis, the active liquid circulation (via refrigerant and coolant) is determined to have the lowest battery temperature increase (3.9 °C in 30 min) and most cell temperature uniformity (2.5 °C median) as well as the lowest entropy generation rate (0.0121 W/K) among the compared systems. Copyright © 2012 John Wiley & Sons, Ltd.

show abstract

Thermal modeling of an on-board nickel-metal hydride pack in a power-split hybrid configuration using a cell-based resistance-capacitance, electro-thermal model

Cited by 9 publications

References 13 publications

Thermal runaway due to symmetry breaking in parallel-connected battery cells

Thermal runaway due to symmetry breaking in parallel-connected battery cells

Optimized equivalent consumption minimization strategy-based artificial Hummingbird Algorithm for electric vehicles

Performance assessment of thermal management systems for electric and hybrid electric vehicles

Contact Info

Product

Resources

About