Fast Prediction of Battery Pack Safety Under Side Pole Collision
In order to conduct more comprehensive safety analysis of electric cars in side pole collision sce-narios,in the paper a locally refining scheme is used to build the finite element model of battery pack,which is ap-plied to simulation at both the whole car and the battery pack levels.Based on accident statistics,the side pole colli-sion responses of the car are examined by changing the impact positions,angles and collision speed,including the conditions defined in the national standards.Considering the high cost of the whole car simulation,a parameterized model of battery pack level is established by adjusting collision speed and mass compensation for large-scale side pole collision simulation.A fast prediction model based on the energy method is proposed for battery pack level colli-sion safety,which can predict the deformation and mechanical failure risk in real time under different side pole im-pact conditions.The model is validated with an average prediction error of 3.22%.
battery packcrash safetyside pole impactfinite element simulationfast prediction
万方数据
维普
