The structure of the whole vehicle is very simple. The basic unit is the frame, plastic parts, shock absorption, battery, controller and motor. The quality of the frame is particularly critical, and many users are not too concerned about the quality of the frame, as this part is difficult to observe. However, the quality of the frame directly determines the safety performance of the vehicle. Here are several ways to verify the frame. Firstly, observe the welding level of the frame inside the vehicle plastic parts. If there are any cases of false welding and desoldering, the quality of the frame is not ideal. Secondly, observe whether the frame has rust marks, because the frame needs a process called electrophoresis to prevent rust. Many frame manufacturers only need to spray black paint without electrophoresis in order to control the cost. If the new car has rust, The problem, that is, the quality of the frame electrophoresis is abnormal. Finally, test the car, drive at high speed and then brake urgently. See if the frame is shaking from side to side. If the shaking is very strong, it means that the quality of the frame is not good, and there is a safety hazard. Because the electric vehicle market is mixed, the frame is hidden inside the vehicle and cannot be directly inspected. Therefore, many manufacturers do not strictly control the quality of the frame. Picking a good frame is very important for the whole car. There is also a simple method. If the vehicle is removed, the weight can be lifted. The more important the vehicle is, the more solid the material is, and the better the safety performance is.

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