Due to increase greenhouse gases and limitation of fossil fuels, electrical vehicles becoming more important. According to research, the number of cars will double in 2050 compared to 2015, which emphasizes the importance of electrical vehicles. Battery and battery chargers are the most important parts in an electrical vehicle. Considering limitations and high costs of using battery charging stations, there are two choices in front of electrical vehicle manufacturers that can be use the battery charger separately in the car or use the integrated battery charger structure with electrical machine and drive. The use of the integrated structure means the winding use as large inductors and drive’s switches use as battery charger’s switches. The integrated battery charging structure, reducing costs, also reducing weight and occupied volume of the electrical vehicle. The SRM, due to simplicity of the structure, cost of production and maintenance, lack of winding and magnet in the rotor, and wide range of speed at constant power, make suitable options for using this electrical machine in electrical vehicles. On the other hand, to charge the battery pack of the electrical vehicle when it stopped at the garage, using winding as a large inductor of the battery charger and multi-phase excitation causes some restrictions. One of these limitations is movement of the rotor during battery charging, which increases control instrument and mechanical devices such as clutches or brakes. It also increases temperature of the winding and makes lower the electrical machine life. Because of the inductance variations in each phases at different rotor position and effect of mutual inductance due to the multi-phase excitation, zero torque control is important for fixing the rotor angle. After selecting charge current of the battery and identifying the position of the rotor by the control system, based on the zero torque condition, can chose current excitation of each phase by the control instrument. In this structure, winding’s temperature increase due to the multi-phase excitation, it is possible to exceed the permissible temperature of insulation and reduce electrical machine life. Therefore, presence of the system that monitoring the temperature of the winding is important. In this dissertation, a model is developed analytically to monitor the instantaneous increase of temperature while charging the battery in the integrated battery charger and for reducing the volume and time of the calculations, proposed a reduced order model, this model provides the ability to estimate the winding’s temperature in different charge level of the battery when it requires faster charging. For this proposition, using the finite element method and MAXWELL software, electromagnetic analyzes are performed in the field of loss calculation and zero torque and also temperature of the winding in steady state by ANSYS software and its transient by the proposed analytical method and type of reduction Its order is calculated in MATLAB . In order to investigate accuracy of the proposed analytical model and its reduced order model, the temperature obtained from model estimation with experimental results is compared. In the following, ohmic loss reduction method is also investigated by maintaining zero torque and with normal zero torque control is compared the temperature of the winding. Also, due to the possibility of interleaved in the converter, the reduction of the ripple battery’s current is also examined and at the end general algorithm for charging the battery with thermal limitation in winding is presented. Keywords: 1-Switched Reluctance machine, 2-Ohmic Loss, 3-Thermal Analysis, 4-Electrical Vehicle, 5-Integrated Battery Charger.