Climate change caused by emission from human activity is a great threat to humanity. Road transportation is major source of these emissions threatening our planet. The electric vehicle is one of the solutions for reducing road emissions when powered by renewable energy sources due to its zero emissions on the road. One of the important design elements of the electric vehicle is the thermal management system, because of the major differences of the thermal requirements of the vehicle compared to a traditional internal combustion vehicle. This thesis provides the basics on the design of an electric vehicle thermal management system. It discusses the main layouts features of the system such as the battery loop, VCC & cabin loop, and the motor and power electronics loops. It takes a benchmark patent system and compares it to other systems from three systems from literature and to three other patents to identify key modes of operation for the thermal systems such as different modes of heating or cooling. Lastly the thesis provides the basic required knowledge in heat transfer and CFD in order to approach the building of 0 or 1 D model of individual component or entire system design through the study of some known cases of 1D conduction heat transfer in a rod, 2D conduction in a rod of 4 materials, Smith-Hutton, and Lid Driven Cavity.