Basic evaluation technology development of battery installation safety for electric vehicles

Abstract

A common feature of electric vehicles is that they do not emit exhaust gases, such as CO2 or Nox, have low noise and vibration harshness (NVH), and are silent as a result of their using secondary electric energy, i.e. alternatives to petroleum. The case of an electric vehicle, where a motor system can be substituted for a combustion engine comprises a very fascinating power source which is environmentally sustainable. However, due to the low power performance of the motor and battery source, the weight reduction of the electric vehicle is necessary to increase its efficiency. To research this new vehicle, the benchmarking performed by leading companies of electric vehicles was thoroughly investigated. The reinforcement degree can differ as a consequence of the motor and the battery position in the vehicle in order to satisfy the vehicle safety and it can induce the weight variation of the vehicle. Therefore, the CAE (computer aided engineering) simulation of the full vehicle (Metro by Geo Co.) model was performed. Through the battery mounts modeled by the Hyper-Mesh program and the benchmarking of the battery installation placed in the vehicle location (on front engine room, center floor or rear trunk position), the optimized position of the power train system considering weight balancing of the electric vehicle was suggested in the present study. In addition, the best mounting position and mounting method of the battery to suggest the design guidelines in order to make up a safe electric vehicle were evaluated.