Thermal energy can be easily converted to electrical energy using the thermal electric generator (TEG). This paper is aimed to developing a model of TEG array for Hybrid Electric Vehicle (HEV) system. The proposed system is implemented experimentally by increasing the temperature difference between the two sides of TEG array. To achieve the high temperature difference between these sides, the hot side is putting on the exhaust manifold of car, and the other side is colded by using the air-condition system in the car. The voltage generated from TEG is used for achieving maximum energy to recharge a battery car. Simulation results are carried out using MATLAB/Simulink software package to investigate the system performance. The experimental results are presented to demonstrate the effectiveness of the proposed array of TEG for HEV system. Also, the obtained results prove that the designed array of TEG gives good performance for different operating conditions.