Modelling of the thermal behaviour of an ultracapacitor for a 42-V automotive electrical system

Lee, Dae Hun; Kim, Ui Seong; Shin, Chee Burm; Lee, Baek Haeng; Kim, Byung Woo; Kim, Young‐Ho

doi:10.1016/j.jpowsour.2007.09.081

Cited by 46 publications

(33 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameter values are chosen to provide the best fit of the modeling results to the experimental data. To simplify the mathematical analysis of the thermal modeling, it is assumed that heat is generated only in the electrode region during the charge and discharge of the UC and the heat generation rate is uniform throughout the electrode region (A) [15]. The heat generation in a UC cell is the summation of an irreversible Joule heat and a reversible heat caused by a change of entropy [18].…”

Section: Mathematical Modelmentioning

confidence: 99%

“…De Levie [11] developed a theory on the capacitance in each pore of porous electrodes being modeled as an RC transmission line. Previous thermal models predicted the thermal behavior of a UC by solving the transient heat conduction equation in one- [12], two- [13,14], or three-dimensional space [15][16][17]. Most of those thermal models [13,[15][16][17] neglected the reversible heat generation in a UC cell.…”

Section: Introductionmentioning

confidence: 99%

“…Previous thermal models predicted the thermal behavior of a UC by solving the transient heat conduction equation in one- [12], two- [13,14], or three-dimensional space [15][16][17]. Most of those thermal models [13,[15][16][17] neglected the reversible heat generation in a UC cell. Schiffer et al [18] showed that the heat generation in a UC cell consists of an irreversible Joule heat and a reversible heat caused by a change of entropy based on the analysis of the thermal measurement data obtained for a UC.…”

Section: Introductionmentioning

confidence: 99%

“…They recently presented a first-order thermal model of electric double layer capacitors based on the lumped-capacitance approximation [21]. Their model can be regarded as a zero-dimensional thermal model in comparison with the one- [12], two- [13,14], or three-dimensional models [15][16][17] introduced in the above.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor

Lee

Kim

et al. 2014

Energies

View full text Add to dashboard Cite

This paper reports a modeling methodology to predict the electrical and thermal behaviors of a 2.7 V/650 F ultracapacitor (UC) cell from LS Mtron Ltd. (Anyang, Korea). The UC cell is subject to the charge/discharge cycling with constant-current between 1.35 V and 2.7 V. The charge/discharge current values examined are 50, 100, 150, and 200 A. A three resistor-capacitor (RC) parallel branch model is employed to calculate the electrical behavior of the UC. The modeling results for the variations of the UC cell voltage as a function of time for various charge/discharge currents are in good agreement with the experimental measurements. A three-dimensional thermal model is presented to predict the thermal behavior of the UC. Both of the irreversible and reversible heat generations inside the UC cell are considered. The validation of the three-dimensional thermal model is provided through the comparison of the modeling results with the experimental infrared (IR) image at various charge/discharge currents. A zero-dimensional thermal model is proposed to reduce the significant computational burden required for the three-dimensional thermal model. The zero-dimensional thermal model appears to generate OPEN ACCESSEnergies 2014, 7 8265 the numerical results accurate enough to resolve the thermal management issues related to the UC for automotive applications without relying on significant computing resources.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor

Lee

Kim

et al. 2014

Energies

View full text Add to dashboard Cite

show abstract

“…Ultracapacitors, also known as supercapacitors or double-layer capacitors, have high power density, low internal resistance, high efficiency, and exceedingly long cycle life, while possessing the merits of wide operating temperature range and fast charging [9,10]. However, their drawbacks, such as low energy density and relative high price, limit the possibility of deploying UCs as the single energy storage for electric vehicles.…”

Section: Introductionmentioning

confidence: 99%

Online Parameter Identification of Ultracapacitor Models Using the Extended Kalman Filter

et al. 2014

View full text Add to dashboard Cite

Ultracapacitors (UCs) are the focus of increasing attention in electric vehicle and renewable energy system applications due to their excellent performance in terms of power density, efficiency, and lifespan. Modeling and parameterization of UCs play an important role in model-based regulation and management for a reliable and safe operation. In this paper, an equivalent circuit model template composed of a bulk capacitor, a second-order capacitance-resistance network, and a series resistance, is employed to represent the dynamics of UCs. The extended Kalman Filter is then used to recursively estimate the model parameters in the Dynamic Stress Test (DST) on a specially established test rig. The DST loading profile is able to emulate the practical power sinking and sourcing of UCs in electric vehicles. In order to examine the accuracy of the identified model, a Hybrid Pulse Power Characterization test is carried out. The validation result demonstrates that the recursively calibrated model can precisely delineate the dynamic voltage behavior of UCs under the discrepant loading condition, and the online identification approach is thus capable of extracting the model parameters in a credible and robust manner.

show abstract

Ultra‐Capacitor Module Selection and Design

Grbović

2013

Ultra‐Capacitors in Power Conversion Systems

View full text Add to dashboard Cite

Modelling of the thermal behaviour of an ultracapacitor for a 42-V automotive electrical system

Cited by 46 publications

References 12 publications

Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor

Modeling of the Electrical and Thermal Behaviors of an Ultracapacitor

Online Parameter Identification of Ultracapacitor Models Using the Extended Kalman Filter

Ultra‐Capacitor Module Selection and Design

Contact Info

Product

Resources

About