Measurement of Multiscale Thermal Transport Phenomena in Li-Ion Cells: A Review

Shah, Krishna; Vishwakarma, Vivek; Jain, Ankur

doi:10.1115/1.4034413

Cited by 61 publications

(31 citation statements)

References 156 publications

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“…Effective removal of heat from Li-ion cells and battery packs is a critical technological challenge for improving the performance, safety, and reliability of electrochemical energy conversion and storage systems [1][2][3]. Several engineering applications such as electric vehicles, stationary power storage systems, etc., involve large battery packs containing multiple Li-ion cells capable of individually storing and converting energy.…”

Section: Introductionmentioning

confidence: 99%

Conjugate Heat Transfer Analysis of Thermal Management of a Li-Ion Battery Pack

Chalise

Shah

Prasher

et al. 2017

Journal of Electrochemical Energy Conversion and Storage

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Thermal management of Li-ion battery packs is a critical technological challenge that directly impacts safety and performance. Removal of heat generated in individual Li-ion cells into the ambient is a considerably complicated problem involving multiple heat transfer modes. This paper develops an iterative analytical technique to model conjugate heat transfer in coolant-based thermal management of a Li-ion battery pack. Solutions for the governing energy conservation equations for thermal conduction and convection are derived and coupled with each other in an iterative fashion to determine the final temperature distribution. The analytical model is used to investigate the dependence of the temperature field on various geometrical and material parameters. This work shows that the coolant flowrate required for effective cooling can be reduced significantly by improving the thermal conductivity of individual Li-ion cells. Further, this work helps understand key thermal–electrochemical trade-offs in the design of thermal management for Li-ion battery packs, such as the trade-off between temperature rise and energy storage density in the battery pack.

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Section: Introductionmentioning

confidence: 99%

Conjugate Heat Transfer Analysis of Thermal Management of a Li-Ion Battery Pack

Chalise

Shah

Prasher

et al. 2017

Journal of Electrochemical Energy Conversion and Storage

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“…However, due to poor thermal conductance of the cell [9] resulting from material and interfacial thermal resistances in the cell [10], this causes significant temperature rise [11,12], particularly in the core of the cell, where heat accumulation tends to occur due to the lack of a direct access for heat removal [13]. While high core temperature may improve cell performance due to reduced internal resistance, it is also known that high cell temperature increases the rate of capacity fade [14,15]. Further, in many cases, the Battery Management System (BMS) may throttle cell power in response to a high cell temperature to keep the cell within a safe envelope, thereby resulting in reduced performance .…”

Section: Introductionmentioning

confidence: 99%

“…This necessitates the design and implementation of an effective thermal management strategy in order to keep the cell temperature below a threshold value and prevent undesirable conditions such as thermal runaway [16][17][18]. A number of thermal management strategies have been reported in the past, which have been well covered by recent review articles [14,15,19]. Most thermal management techniques focus on heat removal from the outside surface of the cell.…”

Section: Introductionmentioning

confidence: 99%

Non-invasive measurement of internal temperature of a cylindrical Li-ion cell during high-rate discharge

Anthony

Wong

Wetz

et al. 2017

International Journal of Heat and Mass Transfer

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Li-ion cells are a technologically important class of devices for electrochemical energy storage and conversion. Overheating of a Li-ion cell during operation is undesirable as it directly affects performance and safety. Although a number of methods have been used for temperature measurement in Li-ion cells, there is a lack of non-invasive techniques to determine the peak temperature at the core of the cell. Measuring only the outside surface temperature, while straightforward, is not sufficient since the core temperature is in most cases much higher. This paper presents non-invasive measurement of the core temperature of a Li-ion cell using a recently developed technique that utilizes space and time integrals of the measured temperature field at the outside surface. The surface temperature field of an operating Li-ion cell is measured using infrared thermography at multiple discharge rates up to 10C, using which, the core temperature is predicted as a function of time. In each case, there is excellent agreement throughout the discharge period between the predicted core temperature and measurements from a thermocouple embedded at the core of the cell. These measurements quantify the temperature gradient within the cell, which is particularly high at large discharge rates. This paper may result © 2016. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 in non-invasive core measurement methods that may contribute towards performance optimization and improved safety of Li-ion cells.

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“…Supposing the heat conduction is the main heat transfer type, heat generation is evenly distributed within the battery, and further the temperatures of both battery surface and interior are uniform, then a popular two-stage thermal model for battery cell [31][32][33] can be derived as…”

Section: Battery Thermal Modelmentioning

confidence: 99%

A brief review on key technologies in the battery management system of electric vehicles

et al. 2018

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Batteries have been widely applied in many high-power applications, such as electric vehicles (EVs) and hybrid electric vehicles, where a suitable battery management system (BMS) is vital in ensuring safe and reliable operation of batteries. This paper aims to give a brief review on several key technologies of BMS, including battery modelling, state estimation and battery charging. First, popular battery types used in EVs are surveyed, followed by the introduction of key technologies used in BMS. Various battery models, including the electric model, thermal model and coupled electro-thermal model are reviewed. Then, battery state estimations for the state of charge, state of health and internal temperature are comprehensively surveyed. Finally, several key and traditional battery charging approaches with associated optimization methods are discussed.

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Measurement of Multiscale Thermal Transport Phenomena in Li-Ion Cells: A Review

Cited by 61 publications

References 156 publications

Conjugate Heat Transfer Analysis of Thermal Management of a Li-Ion Battery Pack

Conjugate Heat Transfer Analysis of Thermal Management of a Li-Ion Battery Pack

Non-invasive measurement of internal temperature of a cylindrical Li-ion cell during high-rate discharge

A brief review on key technologies in the battery management system of electric vehicles

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