Electric vehicles, namely electric vehicles, also known as electric vehicles. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, an electric vehicle is a vehicle in which a battery is used as an energy source, and electrical energy is converted into mechanical energy movement through a controller, a motor, and other components, so as to control the current and change the speed of the vehicle.
The share of electric vehicles in the national economy is not very high. However, it conforms to the national trend of energy conservation and environmental protection, and greatly facilitates short-distance transportation. The most important thing is that it plays an important role in the national economy by saving and protecting energy and the environment.
Changes in consumer preferences will also affect the changes in the competitive landscape of electric vehicle companies. Changes in consumer preferences vary with changes in personal income levels. With the improvement of the economy, the improvement of residents' consumption level and the increasing awareness of energy conservation, the quality requirements for electric vehicles have also increased.
The development of electric vehicles has since stagnated for more than half a century. With the surging flow of oil resources to the market, people have almost forgotten the existence of electric vehicles. Relative to the technologies used in electric vehicles: electric drives, battery materials, power battery packs, battery management, etc., can not be developed or used.
As a green sunrise industry, electric vehicles have been developed in China for ten years. In terms of electric bicycles, by the end of 2010, China's electric bicycles had reached 120 million, and it was growing at an annual rate of 30%.
From the perspective of energy consumption, electric bicycles are only one-eighth of motorcycles and one-twelfth of cars; an electric bicycle occupies only one-twentieth of the space of ordinary private cars; from the perspective of development trends, The market prospects of the electric bicycle industry are still promising.
Electric bicycles have been favored by the urban middle- and low-income groups for their low-cost, convenient, and environmentally-friendly functional advantages.
Regarding electric vehicles, the "Energy-saving and New Energy Automobile Industry Development Plan" has been clearly submitted to the State Council, and the "Plan" has been elevated to a national strategic level, aiming to lay out a new bureau for the automobile industry.
The first is face. When you have determined a brand or a certain car model, the first thing is, of course, the appearance. The craftsmanship and level of the paint directly affect the first impression of this car. The paint materials include primer, top coat and varnish. Different brands of paint directly affect the final effect. Of course, we have no way to know the specific paint brand used in the vehicle when choosing a car, but we can judge the quality of the paint based on the effect of the paint. A good baking paint has a transparent and bright surface, and the color is deep and natural. There should be no uneven color, chromatic aberration, and large areas of pitting or bumps. The applique process is smooth and the paint is evenly covered.
In the sun, the lacquer is bright and colorful, and the shade has a thick texture. If you find it difficult to understand these descriptions, the easiest way is to go to a few more stores and compare cars with the same color. It feels like they will come out soon. The most important point is to consider the anti-ultraviolet ability of the paint. Many car models do not have anti-ultraviolet agents added to the paint. After long-term exposure to the sun, the car will gradually fade, especially the white paint, which is more prone to fading or discoloration. Because such problems cannot be immediately judged, it is possible to observe whether there is a discoloration problem on the show car of the car dealer and make a basic assessment.
Next is the lining. 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. Many users don't care about the quality of the frame because it is difficult to observe this part. However, the quality of the frame directly determines the safety performance of the vehicle. The following provides you with several ways to verify the frame. First observe the welding level of the frame in the vehicle's plastic parts. If there is false welding or desoldering, it means that the quality of the frame is not ideal. Secondly, observe whether there are traces of rust on the frame, because in order to prevent rust, the frame needs a process called electrophoresis. In order to control the cost, many frame manufacturers simply spray black paint without electrophoresis. If the new car is rusted The problem, that means that the quality of the frame electrophoresis is abnormal. Finally, test the car, drive at a high speed and then make an emergency brake to see if the frame shakes from side to side. If the shake is severe, it means that the quality of the frame is not good enough, and there is a potential safety hazard. Because the electric vehicle market is mixed, the frame is hidden inside the vehicle and cannot be inspected directly, so many manufacturers do not strictly control the quality of the frame. Choosing a good frame is very important to the entire vehicle. There is also a simple method. If the battery is removed from the whole vehicle, you can lift the weight to test. The heavier the vehicle, the more solid the material and the greater the possibility of better safety performance.
Shock absorption is a key component that affects comfort. It is divided into front shock absorption and rear shock absorption. There are many ways to test the front shock absorption. Here is a common method. Ride an electric bike, accelerate quickly to the maximum, and then suddenly brake. The front shock absorption will be immediately compressed because of the vehicle's own inertia. At this time, hold the brake lever with both hands. The body presses down forcefully with the shock absorption, and feels whether the shock absorption is in the end. If the shock absorption is in the end, it means that the shock absorption effect is very poor, and the quality of the front shock absorption is not good enough. The inspection method of the rear shock absorption can be through riding some speed bumps or ditch ridges, feeling the comfort level through the rear seat, or pressing the rear seat cushion quickly on the spot to sense the comfort level of shock absorption.