Determination of the Optimum Heat Transfer Coefficient and Temperature Rise Analysis for a Lithium-Ion Battery under the Conditions of Harbin City Bus Driving Cycles

Wu, Xiaogang; Siyu, Lv; Chen, Jizhong

doi:10.3390/en10111723

Cited by 26 publications

(18 citation statements)

References 27 publications

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“…Moreover, a lumped parameter thermal model was constructed to investigate the thermal behaviour of the battery system. The outcomes demonstrated that the heat transfer coefficient is the third power subordinate of the ambient temperature [10].…”

Section: Introductionmentioning

confidence: 99%

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An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery

2019

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In order to understand the thermal behaviour of a lithium-ion battery, the heat generation within the cell should be determined. The entropic heat coefficient is necessary to determine for the heat generation calculation. The entropic heat coefficient is one of the most important factors, which affects the magnitude of the reversible heat. The purpose of this research is to analyze and investigate the effect of different parameters on the entropic coefficient of lithium titanate oxide batteries. In this research, a lithium ion pouch cell was examined in both charging and discharging situations. The state of charge levels range was considered from 10% to 90%, and vice versa, in 10% increments. The temperature levels vary from 5 °C to 55 °C and the voltage levels vary from 1.5 V to 2.8 V. The effect of different parameters such as initial temperature, state of charge, thermal cycle, time duration for thermal cycles, and procedure prior to the thermal cycle on the entropic coefficient of lithium titanate oxide batteries were investigated. It was concluded that there is a strong influence of the battery cell state of charge on the entropic heat coefficient compared with other parameters.

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Section: Introductionmentioning

confidence: 99%

“…Temperature increase analysis and optimal heat transfer coefficient were determined for a polymer lithium-ion battery under bus-driving cycle's condition [10]. This investigation studied the heat problems, which arise during the working of power batteries, especially high temperature environments.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery

2019

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“…An important aspect in the operation of electric vehicles is the possibility of using it in various climatic conditions. Studies on this issue were mainly related to the use of appropriate devices such as heat pumps [44,45], air conditioning systems, [46][47][48] and other systems [49] used to condition elements of the electric drive system, driver's cab, and passenger compartment. The last group of publications offers analyses of the results obtained during the operation of urban electric buses under real conditions [50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Studies of Energy Consumption by a City Bus Powered by a Hybrid Energy Storage System in Variable Road Conditions

Łebkowski

2019

Energies

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This article analyzes various configurations of Hybrid Energy Storage Systems consisting of batteries only, combinations of batteries and supercapacitors, and supercapacitors only. For the presented configurations, mathematical models that were used in research in terms of energy consumption and carbon dioxide emissions were developed, employing a 12-m city bus as a test bed. The tests were carried out using standard test cycles for heavy vehicles as well as routes developed on the basis of actual road conditions. The obtained test results confirmed that the lowest energy consumption is characterized by the system supplied exclusively by batteries (855 Wh/km), followed by a hybrid system of a large battery with a small supercapacitor (941 Wh/km), a hybrid system with a large supercapacitor and a small battery pack (1087 Wh/km), and finally a system with a supercapacitor only (1091 Wh/km). In comparison with the conventional diesel power system (3967 Wh/km), the CO2 emission reductions ranged from 27% to 43%, depending on the source of electrical energy.

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“…On the other hand, the speed of the battery's side reaction will accelerate when the temperature is too high, and the capacity of the battery will be greatly reduced. A battery fire, explosion, or other safety incidents can also happen due to a high temperature [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study on a Battery Thermal Management System Based on a Thermoelectric Effect

Zhang

et al. 2018

Energies

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Abstract:As is known to all, a battery pack is significantly important for electric vehicles. However, its performance is easily affected by temperature. In order to address this problem, an enhanced battery thermal management system is proposed, which includes two parts: a modified cooling structure and a control unit. In this paper, more attention has been paid to the structure part. According to the heat generation mechanism of a battery and a thermoelectric chip, a simplified heat generation model for a single cell and a special cooling model were created in ANSYS 17.0. The effects of inlet velocity on the performance of different heat exchanger structures were studied. The results show that the U loop structure is more reasonable and the flow field distribution is the most uniform at the inlet velocity of 1.0 m/s. Then, on the basis of the above heat exchanger and the liquid flow velocity, the cooling effect of the improved battery temperature adjustment structure and the traditional liquid temperature regulating structure were analyzed. It can be seen that the liquid cooling structure combined with thermoelectric cooling demonstrates a better performance. With respect to the control system, the corresponding hardware and software were also developed. In general, the design process for this enhanced battery thermal management system can provide a wealth of guidelines for solving similar problems. The H commutation circuit, matrix switch circuit, temperature measurement circuit, and wireless communication modules were designed in the control system and the temperature control strategy was also developed.

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Determination of the Optimum Heat Transfer Coefficient and Temperature Rise Analysis for a Lithium-Ion Battery under the Conditions of Harbin City Bus Driving Cycles

Cited by 26 publications

References 27 publications

An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery

An Experimental Analysis of Entropic Coefficient of a Lithium Titanate Oxide Battery

Studies of Energy Consumption by a City Bus Powered by a Hybrid Energy Storage System in Variable Road Conditions

Study on a Battery Thermal Management System Based on a Thermoelectric Effect

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