Discussion on Welding Technology of New Energy Vehicles Under The Demand of Intelligent Manufacturing

 

At present, the economic and social development of various countries in the world still depends on the consumption of oil. However, oil is a non-renewable energy source with very limited reserves. If it continues to be used at this rate, it will have a fatal impact on the development of the global economy and face more serious challenges. As early as 2006, my country had replaced Japan and became the world's second-largest new car consumer market, second only to the United States. Since the beginning of the new century, people have gradually realized the importance of green development and the severity of energy problems. Energy-related issues have also been included in my country's energy security strategy.

 

 

 

Basic content of new energy vehicles

 

The use of traditional petroleum in automobiles not only causes serious energy shortages due to energy consumption but also hurts the deterioration of the world's environment and the emission of greenhouse gases. Currently, many pollutants in the world's air come from automobile exhaust, such as carbon monoxide, 80% of which comes from automobile exhaust; 40% of nitrogen oxides, and 20% to 30% of urban particulate pollutants come from automobile exhaust. Environmental problems will in turn pose a serious threat to people's lives and health, and have also received national attention. In recent years, new energy-related technologies have gradually matured, and electric vehicles and automobiles based on new energy have also been launched on the market. The environmental benefits they bring are very significant. In the context of increasing attention to environmental issues in the future, new energy vehicles will also become the development trend in the future.

 

Laser welding technology

 

Currently, the most widely used welding technology in new energy vehicles is laser welding. This new welding technology has also been successfully used in powder metallurgy, biomedicine, electronic packaging, the automobile industry, aerospace, etc. For new energy vehicles, one of its core components is the motor.

 

In the specific process of manufacturing new energy vehicles, the requirements for motors are also very high. In particular, the welding process of the test piece requires higher strength, higher precision, and less thermal impact. However, during the welding process, the welding operation space angle is very limited and will be idle. Compared with traditional welding methods, laser welding has significant advantages in new energy vehicles and will become an inevitable development trend in the future.

 

 

The application of laser welding technology requires the use of high-energy-density laser beams as a heat source. It is a welding method with high precision and high welding efficiency. Compared with traditional, commonly used welding technologies, the application advantages of laser welding technology in new energy vehicles are mainly manifested in the following aspects:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First, it can reduce the heat input to the maximum extent, and also reduce the scope of the heat-affected zone, thereby minimizing the incidence of adverse effects caused by heat conduction.

 

Second, in the process of applying laser welding technology, there is no need to use electrodes, so there is no need to consider the damage of the electrodes themselves or the pollution caused. Because mechanical welding is different from the general contact welding method, it can also reduce the loss and deformation of the machine.

 

Third, the laser beam has advantages in focusing and alignment and will be guided by the chemical instrument. In the specific welding process, it only needs to be placed at a relatively appropriate distance from the workpiece. At the same time, the process of guidance only needs to be carried out between obstacles or between the machines around the workpiece, and the space restrictions will be smaller.

 

Fourth, in a relatively closed space, that is, in an internal gas environment or a vacuum environment, the laser beam can be gathered within a very small range, so it can achieve welding of parts in a very small range. Laser welding can weld a wide range of materials, and even different types of heterogeneous materials can be welded.

 

 

Welded sealed aluminum alloy housing

 

The connection between the motor body and the aluminum alloy shell is usually made of bolts or rivets, which can play a role in reinforcement and sealing. However, the traditional sealing method will gradually weaken due to the aging of the gasket, which will hurt the overall performance of the motor. If seamless welding is used instead of traditional welding methods during the welding process, the weight of the body can be reduced, the production cycle can be reduced, and the sealing performance of the motor can also be improved. Compared with other materials, the welding performance of aluminum alloy itself is relatively poor, so laser welding technology or tungsten inert gas arc welding technology is required.

 

 

 

 

The emergence and application of new energy vehicles conform to the current concept of green development. However, its production and promotion are also restricted by many factors. Welding technology is an important link in the manufacture of new energy vehicle motors. The selection and application of welding technology will affect the final welding effect. This article mainly explains the advantages of laser welding technology, such as being able to meet the needs of welding different materials. With the help of the advantages of the laser itself, it can achieve 360-degree welding without dead angles, which is impossible to achieve with traditional welding technology. At the same time, the specific application of laser welding technology in new energy vehicles is also analyzed, pointing out that it will bring better social and economic benefits. In the future, in the application of new energy vehicles, welding technology will also achieve new development and updates, providing a guarantee for the quality of new energy vehicles.

 

 

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https://www.stamping-welding.com/search/laser%20welding.html