Multi-objective design optimization of battery thermal management system for electric vehicles

Su, Shaosen; Li, Wei; Li, Yongsheng; Garg, Akhil; Gao, Liang; Zhou, Quan

doi:10.1016/j.applthermaleng.2021.117235

Cited by 46 publications

(6 citation statements)

References 44 publications

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“…We make the assumption that the fluid is incompressible and that the cooling plate is isotropic and homogeneous. When this assumption is satisfied, the flow process of the fluid satisfies the equations of conservation of energy, conservation of momentum, and conservation of mass [37][38][39]. The battery energy conservation equation is expressed as follows:…”

Section: Cfd Methodsmentioning

confidence: 99%

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Study on the Heat Dissipation Performance of a Liquid Cooling Battery Pack with Different Pin-Fins

Xiong

Wang

et al. 2023

Batteries

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The heat dissipation capability of the battery thermal management system (BTMS) is a prerequisite for the safe and normal work of the battery. Currently, many researchers have designed and studied the structure of BTMS to better control the battery temperature in a specific range and to obtain better temperature uniformity. This allows the battery to work safely and efficiently while extending its life. As a result, BTMS has been a hot topic of research. This work investigates the impact of pin-fins on the heat dissipation capability of the BTMS using the computational fluid dynamics (CFD) approach, designs several BTMS schemes with different pin-fin structures, simulates all schemes for fluid-structure interaction, and examines the impact of different distribution, number, and shape of pin-fins on heat dissipation capability and pressure drop. Analyzing the effect of cooling plates with different pin-fins on the thermal capability of the BTMS can provide a basis for the structural design of this BTMS with pin-fin cooling plates. The findings demonstrate that the distribution and quantity of pin-fin shapes might affect heat dissipation. The square-section pin-fins offer better heat dissipation than other pin-fin shapes. As the pin-fins number increases, the maximum battery temperature decreases, but the pressure drop increases. It has been observed that uniform pin-fin distribution has a superior heat dissipation effect than other pin-fin distribution schemes. In summary, the cooling plate with a uniform distribution of 3 × 6 square section pin-fins has better heat dissipation capability and less power consumption, with a maximum battery temperature of 306.19 K, an average temperature of 304.20 K, a temperature difference of 5.18 K, and a pressure drop of 99.29 Pa.

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Section: Cfd Methodsmentioning

confidence: 99%

“…Calculating the heat generation of LIB is the first step of thermal management. Currently, the Bernardi model is mainly used for the heat production model of LIB charging and discharging [37], and the calculation is as follows:…”

Section: Thermal Modelmentioning

confidence: 99%

Study on the Heat Dissipation Performance of a Liquid Cooling Battery Pack with Different Pin-Fins

Xiong

Wang

et al. 2023

Batteries

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“…To ensure the accuracy of the calculation scheme as much as possible, the residual values of the continuity equation, velocity and energy equations are set to 10 -6 . The heat generation of the battery pack under 3C power discharge is simulated, and the external energy power of the battery pack was set to 42,400W/m 3 as the internal heat source [19]. The discharge time is set to 1200 steps and the step size is set to 1 second, with 20 iterations per unit step.…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation and analysis of lithium battery heat dissipation based on multi-objective optimization

et al. 2023

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In order to study the heat dissipation characteristics of lithium batteries, a staggered bi-directional flow cooling method is designed and numerical simulations are established using computational fluid dynamics in this paper with a circular battery as the research object. Since the optimal operating range of Li-ion battery is 293.15-313.15K and the maximum temperature difference is not higher than 5K, the maximum temperature and maximum temperature difference are selected as the optimized design objectives. Firstly, the temperature field of the round lithium battery with discharge multiplier 3C working at ambient temperature 308.15K is studied, and an orthogonal test design is carried out for three factors: battery pack embedding distance, coolant flow rate and coolant temperature, and the best combination of orthogonal test is selected by extreme difference analysis and analysis of variance. Secondly, in order to further verify the heat dissipation efficiency of the battery pack, a back propagation neural network with multi-objective optimization algorithm is proposed, and the optimal heat dissipation method of the numerical simulation is obtained by parameter solution and simulation analysis using the parameter range of the orthogonal test as the constraints of the multi-objective optimization. The results show that this optimized way of battery pack heat dissipation has a significant improvement for the maximum temperature, and none of them will exceed its working range; compared with the 3.39K obtained from the orthogonal test design, the maximum temperature difference of the battery pack calculated by the multi-objective optimization is 3.15K, which is reduced by 7.08%.

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“…[4,5]. Therefore, to manage the thermal energy of the battery and maintain the uniformity of the internal temperature of the battery pack, the battery thermal management system design of the battery pack is one of the most important research topics in the battery pack manufacturing industry [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Size and Location of Liquid Cooling System on the Performance of Square-Shaped Li-Ion Battery Modules of an Electric Vehicle

Sun

Kim

2022

Fluids

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As the core powertrain component of electric vehicles, batteries release heat when charging and discharging due to the chemical reactions between the battery elements and internal resistance. To avoid problems resulting from abnormal temperatures, such as performance and lifespan issues, an effective battery cooling system is required. This paper presents a fundamental study of battery module liquid cooling through a three-dimensional numerical analysis. CFD numerical tests as conducted here are based on the heat transfer characteristics and on the liquid cooling theory, and the temperature distribution and thermal conductivity are analyzed qualitatively and quantitatively using Simcenter STAR CCM+ version 2016 (Siemens Digital Industries Software, Plano, TX, USA). A simulation uses a square-shell lithium-ion battery-made module with two different liquid cooling systems at different positions of the module. The results of the numerical study indicate that the bottom cooling system shows a better battery module temperature difference that is approximately 80% less than that of the side cooling system. For the side cooling system, it is better in terms of the maximum temperature of the battery module, which is approximately 20% lower than that in the bottom cooling system, but this system does not offer very good control of the temperature difference, which is also its greatest shortcoming compared to the bottom cooling system.

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Multi-objective design optimization of battery thermal management system for electric vehicles

Cited by 46 publications

References 44 publications

Study on the Heat Dissipation Performance of a Liquid Cooling Battery Pack with Different Pin-Fins

Study on the Heat Dissipation Performance of a Liquid Cooling Battery Pack with Different Pin-Fins

Numerical simulation and analysis of lithium battery heat dissipation based on multi-objective optimization

Effect of the Size and Location of Liquid Cooling System on the Performance of Square-Shaped Li-Ion Battery Modules of an Electric Vehicle

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