Design and Optimization of Electric Vehicle Power Battery Box

As the country pays more and more attention to energy saving, emission reduction and environmental protection, electric vehicles have become a hot spot in the development of automobile technology. Power battery determines the comprehensive performance of electric vehicle, and the protective performance of battery box directly affects the safety of the vehicle. Therefore, the battery box is taken as the research object, and the box is designed according to the power battery. The box body is arranged under the chassis of the car, and the 3D model and finite element model of the box body are established based on SolidWorks and ANSYS Workbench software. The static performance, impact and modal analysis of the box body are carried out under typical working conditions. Based on the stiffness of the lower box, the box is optimized and verified by modal analysis. The analysis results show that the stiffness of the box can be increased by adding X type stiffeners at the bottom of the box, and the designed power battery box can meet the actual safety requirements of the car.