Investigation Of The Effect Of Changing Air Flow Velocities In Electric Vehicles On Cylinder Geometry Battery Based On Computational Fluid Dynamics (CFD) Analysis

Abstract

With the decrease in popularity of internal combustion engine vehicles in today's globalizing world, the engineering and scientific world are working to develop alternative vehicles for these vehicles. These stand out as hybrid and electric vehicles. Electric vehicles have zero emissions, costs, fuel consumption, etc. has an advantage in matters. Besides these advantages, scientists focused on these issues on the disadvantages of the range problem and the battery pack. Especially the battery thermal management system is one of these issues. The basic parameters to be focused on in the battery thermal management system can be listed as cell geometry, cell array within the battery pack, cell material, refrigerant, refrigerant inlet flow rate. Cell geometries investigated in the literature are seen as cylinder, prismatic and envelope type. Cylinder geometry design was chosen in this study. The cells are arranged in a 4x4 shape inside the battery pack. Steel has been assigned as the cell material. The refrigerant has been selected as air. The design in the research was made via CatiaV5R20. The analyzes are simulated using ANSYS CFD. The purpose of this research is to discuss to what extent different inlet air flow rates affect cell heating or cooling of cells. As a result of the research, it has been observed that the temperature of the cells decreases with the increase in the inlet air flow in the cylinder cells with different sizes and has a positive impact on the thermal system.

Özet

Sanayi devrimiyle birlikte üretim teknolojileri ve ürünleri hızlı bir gelişme süreci içerisine girdi. Günümüzde üretim sistemleri, makineler, operatörler, ürünler vb gibi birçok alanda mikroişlemci tabanlı kontrolörler yaygın olarak kullanılmaktadır. Bu makineler bu kontrolörler kullanılarak hem bir bilgisayar yardımıyla gözlenebilmekte hem de sonuçlar bir rapor halinde sunulabilmektedir. Bunun yanı sıra çeştli iletişim teknolojileri kullanılarak, sistemlerin birbirleri ile haberleşmeleri sağlanmasıyla uzaktan kontrol gibi yöntemlerin ortaya çıkmasına sebep olmuştur. Bu çalışmada da gerçekleştirilen Programlanabilir Lojik Kontorolör (PLC) kullanılarak tasarlanan sanayi tipi taşlama tezgahının otomasyonu ve çalışması anlatılmaktadır.