Dimensioning and Optimization of Hybrid Li-Ion Battery Systems for EVs

Becker, Jan; Nemeth, Thomas; Wegmann, Raphael; Sauer, Dirk Uwe

doi:10.3390/wevj9020019

Cited by 48 publications

(30 citation statements)

References 26 publications

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“…Therefore, the research on battery degradation induced by temperature effects is a vital multidisciplinary field with research branches in battery temperature monitoring and regulation [3,4,8], battery performance prediction [9][10][11][12][13][14][15] and optimization [8,16,17], as well as battery system design [1,[18][19][20]. The shared aim is to decrease the impact of temperature-induced fault mechanisms and battery cell performance flaws within the associated battery system, while, as the applications demand, safety objectives and durability ambitions are met [17,21,22].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Environmental Factors on the Thermal Characteristic of a Lithium–ion Battery

Liebig¹,

Kirstein²,

Geißendörfer³

et al. 2020

Batteries

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To draw reliable conclusions about the thermal characteristic of or a preferential cooling strategy for a lithium–ion battery, the correct set of thermal input parameters and a detailed battery layout is crucial. In our previous work, an electrochemical model for a commercially-available, 40 Ah prismatic lithium–ion battery was validated under heuristic temperature dependence. In this work the validated electrochemical model is coupled to a spatially resolved, three dimensional (3D), thermal model of the same battery to evaluate the thermal characteristics, i.e., thermal barriers and preferential heat rejection patterns, within common environment layouts. We discuss to which extent the knowledge of the batteries’ interior layout can be constructively used for the design of an exterior battery thermal management. It is found from the study results that: (1) Increasing the current rate without considering an increased heat removal flux at natural convection at higher temperatures will lead to increased model deviations; (2) Centralized fan air-cooling within a climate chamber in a multi cell test arrangement can lead to significantly different thermal characteristics at each battery cell; (3) Increasing the interfacial surface area, at which preferential battery interior and exterior heat rejection match, can significantly lower the temperature rise and inhomogeneity within the electrode stack and increase the batteries’ lifespan.

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Section: Introductionmentioning

confidence: 99%

The Impact of Environmental Factors on the Thermal Characteristic of a Lithium–ion Battery

Liebig¹,

Kirstein²,

Geißendörfer³

et al. 2020

Batteries

View full text Add to dashboard Cite

show abstract

“…J. 2018, 9, 19; https://doi.org/10.3390/wevj9020019 Available online: https://www.mdpi.com/2032-6653/9/2/19 This paper [3] describes a tool-based approach for dimensioning single or multiple (hybrid) battery pack systems for electric vehicles. The tool comprises a sophisticated vehicle and battery model as well as an optimization frame-work.…”

Section: Dimensioning and Optimization Of Hybrid Li-ion Battery Systementioning

confidence: 99%

WEVJ Best Paper Awards 2019

2020

WEVJ

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“…The problem of the optimal sizing of energy-autonomous vehicles is studied in the existing literature, especially concerning EVs [1]. In [12], a modelling framework is proposed to study different aircraft-electric propulsion architectures by means of a platform that simulates power generation, distribution, and fuel consumption.…”

Section: Station a Station B Capsulementioning

confidence: 99%

“…Hence, the design of these two transportation systems is radically different. Indeed, for ETs the energy reservoir does not translate into physical constraints that, on the contrary, need to be well stated for the design of an EV in order to maximize its travel distance [1].…”

mentioning

confidence: 99%

Optimal Design of the Propulsion System of a Hyperloop Capsule

Tudor

Paolone

2019

IEEE Trans. Transp. Electrific.

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In this paper, we focus on the assessment of the optimal design of the propulsion system of an energyautonomous Hyperloop capsule supplied by batteries. The novelty in this paper is to propose a sizing method for this specific transportation system, and answer the question whether the energy and power requirements of the Hyperloop propulsion are compatible with available power-electronics and battery technologies. By knowing the weight of a predetermined payload to be transported along predetermined trajectories, the proposed sizing method minimizes the total number of battery cells that supply the capsule's propulsion and maximizes its performance. The constraints embed numerically-tractable and discrete-time models of the main components of the electrical propulsion system and the battery, along with a kinematic model of the capsule. Although the optimization problem is non-convex due to the adopted discrete-time formulation, its constraints exhibit a good numerical tractability. After having determined multiple solutions, we identify the dominant ones by using specific metrics. These solutions identify propulsion systems characterized by energy reservoirs with an energy capacity in the order of 0.5 MWh and a power rating below 6.25 MW, and enable an energy consumption between 10-50 Wh/km/passenger depending on the length of the trajectory.

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Dimensioning and Optimization of Hybrid Li-Ion Battery Systems for EVs

Cited by 48 publications

References 26 publications

The Impact of Environmental Factors on the Thermal Characteristic of a Lithium–ion Battery

The Impact of Environmental Factors on the Thermal Characteristic of a Lithium–ion Battery

WEVJ Best Paper Awards 2019

Optimal Design of the Propulsion System of a Hyperloop Capsule

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