What's the difference between pure electric cars and traditional cars?

The difference between pure electric vehicles and traditional vehicles: 1. Pure electric vehicle cancels the traditional mechanical transmission system layout and adds power battery pack and electronic control equipment, which makes its deformation posture and mechanical characteristics different from those of traditional vehicles in collision. 2. The rigidity of the lower body of the electric vehicle in the battery layout area is low, and it cannot be optimized due to the limitation of human machine and battery space. In order to reach the level of traditional cars, it is necessary to strengthen the front shock absorber and the rear shock absorber spring. 3. At present, the energy storage and endurance of pure electric vehicles are low (due to time), and the weight of battery pack reaches hundreds of kilograms (due to weight), so the demand for lightweight design of car body is stronger than that of traditional cars.