Thermal analysis of a Li-ion battery module under realistic EV operating conditions

Awarke, Ali; Jaeger, Martin; Oezdemir, Oezen; Pischinger, Stefan

doi:10.1002/er.2884

Cited by 43 publications

(31 citation statements)

References 50 publications

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“…Generally, the battery internal resistance R can be described either as a constant or as a function of battery state of charge (SOC) or as a function of temperature . In the present study, the value of internal resistance is considered as a function of temperature as shown in Figure .…”

Section: Electro‐thermal Modellingmentioning

confidence: 99%

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3D electro-thermal modelling and experimental validation of lithium polymer-based batteries for automotive applications

Daud

Chrenko

Santos

et al. 2016

Int. J. Energy Res.

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International audienceThis article presents an electro-thermal model of a stack of three lithium ion batteries for automotive applications. This tool can help to predict thermal behaviour of battery cells inside a stack. The open source software OpenFOAM provides the possibility to add heat generation because of Joule losses in a CFD model. Heat sources are introduced at the connectors and are calculated as a function of battery discharge current and internal resistance. The internal resistance is described in function of temperature. Simulation results are validated against experimental results with regard to cooling air flow field characteristic and thermal behaviour of the cell surface. The validation shows that the simulation is capable to anticipate air flow field characteristics inside the battery box. It also predicts correctly the thermal behaviour of the battery cells for various discharge rates and different cooling system conditions. The simulation supports the observation that batteries have a higher temperature close to the connectors and that the temperature increase depends highly on discharge rate and cooling system conditions. Copyright (C) 2016 John Wiley & Sons, Ltd

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Section: Electro‐thermal Modellingmentioning

confidence: 99%

“…Temperature has a huge influence on the value of battery internal resistance. The change of battery internal resistance with the temperature is reported in . In general, battery internal resistance decreases when the temperature increases (from around −20 °C) until certain limits (around 50 °C) .…”

Section: Electro‐thermal Modellingmentioning

confidence: 99%

3D electro-thermal modelling and experimental validation of lithium polymer-based batteries for automotive applications

Daud

Chrenko

Santos

et al. 2016

Int. J. Energy Res.

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“…14, 16 Guo et al 17 and Gerver et al 18 introduced electrochemistry to thermal models and provided concrete expressions for the open circuit voltage (OCV) as a function of the state of charge (SOC), and the entropy change dU/dT. [23][24][25] They, however, suffer from several disadvantages. This coupled model greatly increased the prediction precision of battery states, especially the internal cell temperature.…”

Section: Introductionmentioning

confidence: 99%

A novel resistance-based thermal model for lithium-ion batteries

Xie

Yang

et al. 2018

Int J Energy Res

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Summary A thermal model considering effects of the state of charge (SOC) and temperature on heat generation is developed for lithium‐ion (Li‐ion) batteries, which models the ohmic resistance, polarization resistance, and entropy change. This model describes a coupling relationship between heat generation and temperature distribution and can be implemented in real time. Then, the thermal model is applied to predict thermal evolutions of an NCR 18650B Li‐ion battery at different ambient temperatures and discharge rates. Extensive experiments are conducted and illustrate that the proposed model can accurately capture the thermal behavior at different ambient temperatures and discharge rates, with an average error of 1.18°C. In addition, comparative studies show that this model significantly outperforms its two counterparts, namely a constant resistance‐based thermal model and a model whose heat generation depends on the temperature but not the SOC.

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“…To guarantee batteries in a normal operation temperature range, especially for the EV/HEV road and highway applications which would result in a temperature increase that accelerates cell aging, efficient thermal management systems for the energy storage are highly required . Rao et al .…”

Section: Introductionmentioning

confidence: 99%

An alternating current heating method for lithium-ion batteries from subzero temperatures

Zhu

Sun

Wei

et al. 2016

Int. J. Energy Res.

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SummAry An alternating current (AC) heating method for lithium‐ion batteries is proposed in the paper. Effects of current frequency, amplitudes and waveforms on the temperature evolution and battery performance degradation are respectively investigated. First, a thermal model is established to depict the heat generation rate and temperature status, whose parameters are calibrated from the AC impedance measurements under different current amplitudes and considering battery safe operating voltage limits. Further experiments with different current amplitudes, frequencies and waveforms on the 18650 batteries are conducted to validate the effectiveness of the AC heating. The experimental data recorded by appropriate measurement instrument are of great consistence with simulation results from the thermal model. At high frequency, the temperature rises prominently as the current increases, and high frequency serves as a good innovation to reduce the battery degradation. However, efficient temperature rise can be obtained from high impedance at low frequencies. Typically, 600 s is needed to heat up the battery from −24 °C to 7.79 °C with sinusoidal waveform and approximately from −24 °C to 25.6 °C with rectangular pulse waveform at 10A and 30 Hz. The model and experiments presented have shown potential value in battery thermal management studies for electric vehicle (EV)/hybrid electric vehicle (HEV) applications at subzero temperatures. Copyright © 2016 John Wiley & Sons, Ltd.

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Thermal analysis of a Li-ion battery module under realistic EV operating conditions

Cited by 43 publications

References 50 publications

3D electro-thermal modelling and experimental validation of lithium polymer-based batteries for automotive applications

3D electro-thermal modelling and experimental validation of lithium polymer-based batteries for automotive applications

A novel resistance-based thermal model for lithium-ion batteries

An alternating current heating method for lithium-ion batteries from subzero temperatures

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