Electric vehicle, that is, electric drive vehicle, also known as electric drive vehicle. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, the electric vehicle is a vehicle that uses the battery as the energy source, and converts the electrical energy into mechanical energy through the controller, motor and other components to control the current size and change the speed.
When you determine a brand or a certain car model, the first thing, of course, is the appearance. The craftsmanship and level of the paint directly affect the first impression of the car. The materials used for baking paint include primer, topcoat and varnish. Different brands of paint directly affect the final effect. Of course, we have no way to know the specific paint brand used by the vehicle when choosing a car, but we can judge the quality of the paint based on the effect of the paint. Good baking paint, the surface is transparent and bright, the color is deep and natural, and there should be no uneven color, color difference, and large-area pits or bumps. The decal process is flat and the paint is covered evenly.
Under the sun, the paint color is bright and colorful, and the shade is shaded, and the paint color is rich and textured. If you find these descriptions difficult to understand, the easiest way is to go to a few more stores and compare more models of the same color, and the feeling will come out soon. The most important point is to consider the anti-ultraviolet ability of the baking paint. Many car models do not have anti-ultraviolet agents added to the baking paint. After a long time of sun exposure, the car will gradually fade, especially the white paint, which is more prone to fading or discoloration. Because such problems cannot be judged immediately, you can observe whether there is a fading problem in the show car of the car dealership and make a basic assessment.
Next is Riko. The structure of the whole vehicle is very simple. The basic units are the frame, plastic parts, shock absorption, battery, controller, and motor. The quality of the frame is particularly critical, and many users don't care much about the quality of the frame, because this part is difficult to observe. However, the quality of the frame directly determines the safety performance of the entire vehicle. The following provides several methods for verifying the frame. First, observe the welding level of the frame in the plastic parts of the vehicle. If there is false welding or de-soldering, it means that the quality of the frame is not ideal.
Secondly, observe whether the frame has rust marks, because the frame needs a process called electrophoresis in order to prevent rust. Many frame manufacturers simply spray black paint without electrophoresis in order to control the cost. If the new car is rusted problem, it means that the electrophoresis quality of the frame is abnormal. Finally, test the car, drive at a high speed and then brake urgently to see if the frame shakes from side to side.
Because the electric vehicle market is mixed, and the frame is hidden inside the vehicle and cannot be directly inspected, many manufacturers do not strictly control the quality of the frame. Choosing a good frame is very important to the whole vehicle. There is also a simple method. If the battery is removed from the whole vehicle, you can hold up the test weight. The heavier the vehicle, the more solid the material used, and the greater the possibility of better safety performance.
Shock absorption is a key component that affects comfort, and it is divided into front shock absorption and rear shock absorption. There are many ways to test the front shock absorber. Here is a common method. Ride on an electric vehicle, accelerate to the maximum quickly, and then brake suddenly. The front shock absorber will be compressed immediately due to the inertia of the vehicle itself. The body presses down with the shock absorption force to sense whether the shock absorption is in the end.
The test method of rear shock absorption can be through riding over some speed bumps or ridges, and feeling the comfort level through the rear seat, or you can quickly press down the recoil cushion in place to perceive the comfort level of shock absorption. A good shock absorber should not only have a downward shock absorber function during compression, but also a shock absorber function when the shock absorber rebounds, rather than a hard and fast bounce.