Strength analysis of the lightweight-designed power battery boxes in electric vehicle

The weight lightening of electric vehicles’ power battery box not only improves the mileage but also extends service life battery, while in practice design lightweight shall sacrifice its strength for safety reason. Herein, three materials including glass fiber composite, carbon and metal steel are used to develop same their strengths simulated. results show that sheet molding compound (SMC, a kind composite) pack be damaged when loaded extrusion force is increased 98.2 kN; pack, 81 kN would make deformation more than 30%; composite one, it can stand test up 100 kN, specific gravity higher former two under model condition. This study proves has advantages high light applied box.