scholarly journals Heatsinks to Cool Batteries for Unmanned Aerial Vehicles

2021 ◽  
Vol 19 ◽  
pp. 327-332
Author(s):  
J. Galvao ◽  
◽  
P. Faria ◽  
A. Mateus ◽  
T. Pereira ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Thermal Management ◽  
Heat Sinks ◽  
Metal Alloys ◽  
Management Systems ◽  
Temperature Threshold ◽  
Small Space ◽  
Efficient Operation ◽  
Battery Thermal Management ◽  
Aerial Vehicle

This study aims to develop several different models of heatsinks, designed to cool a vertical take-off and landing unmanned aerial vehicle (UAV) battery, through topology optimization, aimed at being manufactured through selective laser melting (SLM) technology. A battery’s temperature must be properly managed for a safe and efficient operation. The methodology developed was with the support of software to carry out several simulations which, starting from several scenarios and restrictions imposed by the small space available to accommodate these small batteries in this type of aircraft. The conception resulted in several battery thermal management systems (BTMS) models, with different applications and efficiency degrees. A relevant aspect is the topology optimization being coupled to computational thermal analysis to reduce the mass of the heatsink whilst ensuring a maximum battery temperature threshold. Together with the use of topology optimization, the SLM process was selected to manufacture the heat sinks, under conditions of geometric freedom, using several high thermal conductivity metal alloys, such as, aluminium and copper to obtain the designed models.

scholarly journals Design of Cylindrical Thermal Dummy Cell for Development of Lithium-Ion Battery Thermal Management System

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1357
Author(s):  
Wei Li ◽  
Shusheng Xiong ◽  
Xiaojun Zhou ◽  
Wei Shi ◽  
Chongming Wang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Thermal Management ◽  
Thermal Performance ◽  
Lithium Ion ◽  
Management Systems ◽  
Voltage Source ◽  
Three Dimensional Model ◽  
The Real ◽  
Battery Thermal Management ◽  
Real Cell

This paper aims to design thermal dummy cells (TDCs) that can be used in the development of lithium-ion battery thermal management systems. Based on physical property and geometry of real 18,650 cylindrical cells, a three-dimensional model of TDCs was designed, and it is used to numerically simulate the thermal performance of TDCs. Simulations show that the TDC can mimic the temperature change on the surface of a real cell both at static and dynamic current load. Experimental results show that the rate of heating resistance of TDC is less than 0.43% for temperatures between 27.5 °C and 90.5 °C. Powered by a two-step voltage source of 12 V, the temperature difference of TDCs is 1 °C and 1.6 °C along the circumference and the axial directions, respectively. Powered by a constant voltage source of 6 V, the temperature rising rates on the surface and in the core are higher than 1.9 °C/min. Afterwards, the proposed TDC was used to simulate a real cell for investigating its thermal performance under the New European Driving Cycle (NEDC), and the same tests were conducted using real cells. The test indicates that the TDC surface temperature matches well with that of the real battery during the NEDC test, while the temperature rise of TDC exceeds that of the real battery during the suburban cycle. This paper demonstrates the feasibility of using TDCs to replace real cells, which can greatly improve safety and efficiency for the development of lithium-ion battery thermal management systems.

scholarly journals Heat transfer performance of a micro heat pipe array for battery thermal management systems

2020 ◽  
Vol 65 (31) ◽  
pp. 3485-3496
Author(s):  
Yueqi Wang ◽  
Yuping Qian ◽  
Weilin Zhuge ◽  
Dan Dan ◽  
Chengning Yao ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Thermal Management ◽  
Heat Transfer Performance ◽  
Management Systems ◽  
Transfer Performance ◽  
Micro Heat Pipe ◽  
Battery Thermal Management

A Review on the Current Industrial Uses and the Future Outlook of Battery Thermal Management Systems for Electric Vehicles

2021 ◽  
Author(s):  
Nicholas Choi ◽  
Nhi V. Quach ◽  
Yoonjin Won
Keyword(s):  
Thermal Management ◽  
Power Efficiency ◽  
Heat Dissipation ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Sustainable Transportation ◽  
Management Systems ◽  
Holistic View ◽  
Battery Thermal Management ◽  
Battery Thermal Management System

Abstract Due to the high-power efficiency of lithium-ion batteries, there is an increased interest in integrating batteries into vehicles to create a more sustainable transportation method. However, batteries require thermal management systems to maintain heat generation within ranges lower than 40 kJ and operation temperatures between 25°C and 40°C. When exposed to extremely high or low temperatures, the battery efficiency decreases, and adverse consequences may occur. To combat this, research is conducted to explore various options to create thermofluidic systems that utilize fluids to regulate the battery pack’s temperatures. Developments in cooling systems have commonly used air as the cooling fluid, but research in recent years is innovating towards liquids to encourage a higher heat dissipation rate. This paper introduces battery thermal management system applications, current technologies and challenges, and innovations for improving existing models. The current technologies discussed involve manufactured systems based on air- and liquid-cooling for cylindrical and prismatic battery cells. We provide information on new engineered fluids for improvements in fluid properties. In addition to this, new directions related to manufacturing techniques or materials are highlighted to showcase potential changes to current systems to integrate complicated cooling channels in a three-dimensional design. This paper thereby aims to summarize the holistic view showing the direction of the field and possible techniques for battery thermal management.

scholarly journals Battery Thermal Management Systems: Current Status and Design Approach of Cooling Technologies

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4879
Author(s):  
Thomas Imre Cyrille Buidin ◽  
Florin Mariasiu
Keyword(s):  
Electric Vehicle ◽  
Thermal Management ◽  
Internal Combustion Engines ◽  
Management Systems ◽  
Current Status ◽  
Advantages And Disadvantages ◽  
Battery Thermal Management ◽  
Li Ion ◽  
The Individual ◽  
And Control

In the current context of transition from the powertrains of cars equipped with internal combustion engines to powertrains based on electricity, there is a need to intensify studies and research related to the command-and-control systems of electric vehicles. One of the important systems in the construction of an electric vehicle is the thermal management system of the battery with the role of optimizing the operation of the battery in terms of performance and life. The article aims to critically analyze the studies and research conducted so far related to the type, design and operating principles of battery thermal management systems (BTMSs) used in the construction of various shaped Li-ion batteries, with focus on cooling technologies. The advantages and disadvantages of the individual components, as well as of the proposed BTM solutions, are extensively investigated, with regard also to the adaptability of these systems to the different Li-ion battery shapes. The information thus synthesized provides the necessary and important information and proposes future directions in research to those interested in this topic to be used to increase the efficiency of the thermal management systems of the battery (and with it the global efficiency of the electric vehicle).

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