Thermal parameters determination of battery cells by local heat flux measurements

Murashko, Kirill; Mityakov, A. V.; Pyrhönen, Juha; Mityakov, V. Yu.; Сапожников, С. З.

doi:10.1016/j.jpowsour.2014.07.117

Cited by 47 publications

(30 citation statements)

References 26 publications

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“…The conventional thermal characterization procedure was compared with the experimental results. It was concluded that errors for the thermal conductivity and the specific heat capacity were 0.58% and 3.8% correspondingly, which are satisfactorily low errors [38].…”

Section: Thermal Conductivitymentioning

confidence: 86%

“…A new procedure to determine the thermal parameters of a pouch cell has been introduced [38]. Gradient heat flux sensors was used for the determination of the specific heat capacity and through-plane thermal conductivity.…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…Gradient heat flux sensors was used for the determination of the specific heat capacity and through-plane thermal conductivity. Local heat flux measurement was able to determine thermal parameters in various surface points of the cell [38]. The conventional thermal characterization procedure was compared with the experimental results.…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…Murashko et al [38] proposed a method with local heat flux measurements, which was utilized to characterize the specific heat capacity and thermal conductivity of a pouch cell. Correspondingly, the method presented by Christen [39] is comprised of the contemporaneous acquisition of local heat flux density and temperature.…”

Section: Thermal Conductivitymentioning

confidence: 99%

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Review of Parameter Determination for Thermal Modeling of Lithium Ion Batteries

2018

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This paper reviews different methods for determination of thermal parameters of lithium ion batteries. Lithium ion batteries are extensively employed for various applications owing to their low memory effect, high specific energy, and power density. One of the problems in the expansion of hybrid and electric vehicle technology is the management and control of operation temperatures and heat generation. Successful battery thermal management designs can lead to better reliability and performance of hybrid and electric vehicles. Thermal cycling and temperature gradients could have a considerable impact on the lifetime of lithium ion battery cells. Thermal management is critical in electric vehicles (EVs) and good thermal battery models are necessary to design proper heating and cooling systems. Consequently, it is necessary to determine thermal parameters of a single cell, such as internal resistance, specific heat capacity, entropic heat coefficient, and thermal conductivity in order to design suitable thermal management system.

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Section: Thermal Conductivitymentioning

confidence: 86%

Section: Thermal Conductivitymentioning

confidence: 99%

Section: Thermal Conductivitymentioning

confidence: 99%

Section: Thermal Conductivitymentioning

confidence: 99%

See 2 more Smart Citations

Review of Parameter Determination for Thermal Modeling of Lithium Ion Batteries

2018

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“…A procedure with local heat flux measurements has been proposed by Murashko et al [12], which was used to determine the thermal conductivity and specific heat capacity of a pouch cell. Similarly, the approach presented in this paper includes the simultaneous acquisition of local temperature and heat flux density.…”

Section: Introductionmentioning

confidence: 99%

Test Method for Thermal Characterization of Li-Ion Cells and Verification of Cooling Concepts

et al. 2017

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Temperature gradients, thermal cycling and temperatures outside the optimal operation range can have a significant influence on the reliability and lifetime of Li-ion battery cells. Therefore, it is essential for the developer of large-scale battery systems to know the thermal characteristics, such as heat source location, heat capacity and thermal conductivity, of a single cell in order to design appropriate cooling measures. This paper describes an advanced test facility, which allows not only an estimation of the thermal properties of a battery cell, but also the verification of proposed cooling strategies in operation. To do this, an active measuring unit consisting of a temperature and heat flux density sensor and a Peltier element was developed. These temperature/heat flux sensing (THFS) units are uniformly arranged around a battery cell with a spatial resolution of 25 mm. Consequently, the temperature or heat flux density can be controlled individually, thus forming regions with constant temperature (cooling) or zero heat flux (insulation). This test setup covers the whole development loop from thermal characterization to the design and verification of the proposed cooling strategy.

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Anisotropic Thermal Characterisation of Large‐Format Lithium‐Ion Pouch Cells**

Lin

Chu

Monroe

et al. 2022

Batteries & Supercaps

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Temperature strongly impacts battery performance, safety and durability, but modelling heat transfer requires accurately measured thermal properties. Herein we propose new approaches to characterise the heat capacity and anisotropic thermal‐conductivity components for lithium‐ion pouch cells. Heat capacity was estimated by applying Newton's law of cooling to an insulated container within which the cell was submerged in warmed dielectric fluid. Thermal conductivity was quantified by heating one side of the cell and measuring the opposing temperature distribution with infra‐red thermography, then inverse modelling with the anisotropic heat equation. Experiments were performed on commercial 20 Ah lithium iron phosphate (LFP) pouch cells. At 100 % state‐of‐charge (SOC), the heat capacity of a 489 g, 224 mL pouch cell was 541 J K−1. The through‐plane and in‐plane thermal conductivities were respectively 0.52 and 26.6 W m−1 K−2. Capturing anisotropies in conductivity is important for accurate thermal simulations. State‐of‐charge dependence was also probed by testing at 50 % SOC: the heat capacity dropped by 6 % and thermal conductivity did not significantly change.

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Thermal parameters determination of battery cells by local heat flux measurements

Cited by 47 publications

References 26 publications

Review of Parameter Determination for Thermal Modeling of Lithium Ion Batteries

Review of Parameter Determination for Thermal Modeling of Lithium Ion Batteries

Test Method for Thermal Characterization of Li-Ion Cells and Verification of Cooling Concepts

Anisotropic Thermal Characterisation of Large‐Format Lithium‐Ion Pouch Cells**

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