Simulation And Test Of Electromagnetic Radiation In Battery Electric Vehicle

The effect of electromagnetic radiation on human safety has been attracted widespread attention at home and abroad.There is a large proportion of electric-electronic equipment in electric vehicle,and the electromagnetic environment inside the vehicle is complex.The electromagnetic safety of the vehicle is not only related to human health,but also can determine the healthy growth of electric vehicle industry.At present,the research on electromagnetic radiation of electric vehicle mainly focuses on the effect of electromagnetic compatibility of the whole vehicle by electromagnetic radiation,and there are few studies on electromagnetic safety.The electromagnetic radiation has a long-term additive effect on human health,in order to protect the health of drivers and passengers,and to promote the sound development of electric vehicle industry,it is of great significance to simulation and analysis of electromagnetic radiation in electric vehicles.In order to understand the distribution of the electric field intensity in the interior of electric vehicle.This paper compares the model simulation with the actual measurement method.First of all,the theory and standard of electromagnetic radiation in electric vehicles were discussed based on the electromagnetic theory,and the impact of electromagnetic radiation on human health were pointed out.Subsequently,for one electric vehicle,this paper confirmed its main radiation source,theoretically analyzed the radiation mechanism of the radiation source,and determined the extraction method of the radiation source excitation.Then three-dimensional modeling between the vehicle body and the main radiation source was achieved by using Pro/Engineer and FEKO co-simulation,and the electric field intensity distribution of the main radiation source in the vehicle interior space was simulation and analyzed.At the same time,with reference to the relevant national standards for electromagnetic field measurement,a set of test plans for that electric vehicle was developed.Using the EHP-50 F low-frequency electromagnetic field measurement probe and a test system established by the car diagnostic tool KT700,a spot measurement test was conducted on real vehicles to get the actual electric field intensity distribution data.Finally,the correctness of the simulation method for the study of the electric field intensity distribution in the vehicle is verified by comparing the actual measurement data with the simulation results.The result shows that the intensity of the electric field in the vehicle decreases with the increase of the horizontal height during driving,and the higher the height,the faster it goes down.At the same time,the suggestions of an effective rectification proposal for reducing the electromagnetic radiation in the vehicle automobile design and production are put forward according to the conclusions of this paper.