Thermal analysis of modified Z-shaped air-cooled battery thermal management system for electric vehicles

Shen, X. Z.; Cai, Tianao; He, Chunmin; Yang, Yi; Chen, Miao

doi:10.1016/j.est.2022.106356

Cited by 31 publications

(8 citation statements)

References 35 publications

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“…Thermal modeling and discharge behavior [39] Lithium-ion battery Thermal model [40] Lithium-ion battery pack Power and thermal characterization [41] Lithium-ion batteries Sony (US18650) cell Analysis of electrochemical and thermal Behavior [42] Lithium/polymer-electrolyte Heat transfer phenomena [43] Lithium-ion batteries Thermal modeling and design considerations [44] Lithium polymer lithium/polymer-electrolyte batteries Electrochemical-thermal model [45] Battery module Three-dimensional temperature and current distribution [46] Lithium-ion batteries Modified air-cooled battery thermal management system [47] Cylindrical lithium-ion battery…”

Section: Thermal Characteristics Of Lithium-ion Batteriesmentioning

confidence: 99%

Thermal Characteristics and Safety Aspects of Lithium-Ion Batteries: An In-Depth Review

Madani,

Ziebert,

Marzband

2023

Symmetry

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This paper provides an overview of the significance of precise thermal analysis in the context of lithium-ion battery systems. It underscores the requirement for additional research to create efficient methodologies for modeling and controlling thermal properties, with the ultimate goal of enhancing both the safety and performance of Li-ion batteries. The interaction between temperature regulation and lithium-ion batteries is pivotal due to the intrinsic heat generation within these energy storage systems. A profound understanding of the thermal behaviors exhibited by lithium-ion batteries, along with the implementation of advanced temperature control strategies for battery packs, remains a critical pursuit. Utilizing tailored models to dissect the thermal dynamics of lithium-ion batteries significantly enhances our comprehension of their thermal management across a wide range of operational scenarios. This comprehensive review systematically explores diverse research endeavors that employ simulations and models to unravel intricate thermal characteristics, behavioral nuances, and potential runaway incidents associated with lithium-ion batteries. The primary objective of this review is to underscore the effectiveness of employed characterization methodologies and emphasize the pivotal roles that key parameters—specifically, current rate and temperature—play in shaping thermal dynamics. Notably, the enhancement of thermal design systems is often more feasible than direct alterations to the lithium-ion battery designs themselves. As a result, this thermal review primarily focuses on the realm of thermal systems. The synthesized insights offer a panoramic overview of research findings, with a deeper understanding requiring consultation of specific published studies and their corresponding modeling endeavors.

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Section: Thermal Characteristics Of Lithium-ion Batteriesmentioning

confidence: 99%

Thermal Characteristics and Safety Aspects of Lithium-Ion Batteries: An In-Depth Review

Madani,

Ziebert,

Marzband

2023

Symmetry

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“…There are two ways to dissipate heat in the air duct: series and parallel [11] (as shown in Figure 4). It is easy to know from Figure 4 (a) that the heat dissipation of the series air duct will lead to the phenomenon of low inlet temperature and high outlet temperature, and the whole temperature field is uneven.…”

Section: Air Coolingmentioning

confidence: 99%

Research Progress of Nanofluid Heat Pipes in Automotive Lithium-ion Battery Heat Management Technology

Wang¹,

Zhao²,

Jin³

2023

Tr Ren Energy

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Power batteries are a crucial component of electric vehicles and other electric equipment. Their long-term high-rate discharge generates a lot of heat, which can lead to battery failure, shortened battery life, and even safety accidents if not managed properly. Due to its high thermal conductivity, the heat pipe can quickly conduct heat away from the battery and separate the heat source from the heat sink. In addition, due to its excellent isothermal performance, the heat pipe can also achieve the characteristics of low-temperature preheating and high-temperature cooling of the power battery by reducing the inhomogeneity of the battery temperature field to reduce the temperature difference. In this paper, we review the current state of the art in thermal management of automotive lithium-ion battery, and highlight the current state of thermal management of batteries based on the combination of nanofluids and heat pipes. Finally, the development of nanofluidic heat pipes in lithium-ion battery heat management systems is prospected.

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“…The results indicate that the gradient vertical spacing of the cells reduces thermal concerns at the expense of increasing pressure drop and an insignificant superiority in space utilization. Shen et al [7] demonstrated that 19° rotation of the batteries along the inlet/outlet direction for the z-shaped battery air-based battery thermal management systems decreases the maximum temperature and temperature difference by 10.5% and 23.9%, respectively. The research by Sahin et al [8] indicates that employing delta winglet baffles in air-cooled battery packages brings down the maximum temperature and temperature difference by up to 2% and 15% while leading to 44% more power consumption.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Potential and Limitations of Cell Spacing Adjustment for Optimized Air-Based Battery Thermal Management Systems

Moosavi,

Ljung,

Lundström

2024

Preprint

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A reliable battery thermal management system plays a crucial role in the safe, efficient, and long-term operation of a high-performance lithium battery system. This study evaluates the temperature rise, pressure drop, capacity loss, and cyclical cost of an air-cooled battery system consisting of 90 cylindrical battery cells placed in a staggered arrangement in the module. The effect of spacing between the adjacent cells and inflow velocity is investigated for the battery system operating at high charge/discharge rates of 3C and 5C. The results demonstrate that the hybrid model, which consists of the battery life model integrated with the simplified modeling approach for the thermal evaluation of battery packs, provides a cost-effective tool for multi-objective analysis and optimization of air-cooled battery packages. The results reveal that the air-based cooling system has the potential to fulfill the safety standards in all studied cases, and employing battery modules with larger cell spacing at a constant inflow velocity may reduce the maximum temperature, pressure drop, and cyclical cost by up to 2.14%, 93.36%, and 35.69%, respectively, while extending the lifespan of the battery system by up to 55.45%. However, it is found that the air-based cooling system approaches its limit of thermal performance at high inflow velocities. A novel index (MCR index) is proposed in this paper to characterize the limitations associated with adjusting cell spacing for air-based battery cooling systems. It is observed that for systems with an MCR index beyond 600, the effect of cell spacing on thermal performance becomes negligible. This can be used as a useful guideline for optimizing air-based battery thermal management systems or integrating them with other cooling methods.

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Thermal analysis of modified Z-shaped air-cooled battery thermal management system for electric vehicles

Cited by 31 publications

References 35 publications

Thermal Characteristics and Safety Aspects of Lithium-Ion Batteries: An In-Depth Review

Thermal Characteristics and Safety Aspects of Lithium-Ion Batteries: An In-Depth Review

Research Progress of Nanofluid Heat Pipes in Automotive Lithium-ion Battery Heat Management Technology

Investigating the Potential and Limitations of Cell Spacing Adjustment for Optimized Air-Based Battery Thermal Management Systems

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